diff --git a/debian/changelog b/debian/changelog index 03683d33a..bcc8dc346 100644 --- a/debian/changelog +++ b/debian/changelog @@ -146,6 +146,8 @@ linux (4.19.15-1) UNRELEASED; urgency=medium [ Yves-Alexis Perez ] * Bump ABI to 2 because of changes in struct sock_common from 60f05dddf1eb + * [rt] Update to 4.19.15-rt12 + - rtmutex/rwlock: preserve state like a sleeping lock [ Salvatore Bonaccorso ] * ipv6: Consider sk_bound_dev_if when binding a socket to an address diff --git a/debian/patches-rt/0001-ARM-at91-add-TCB-registers-definitions.patch b/debian/patches-rt/0001-ARM-at91-add-TCB-registers-definitions.patch index 8c539104d..822a441e2 100644 --- a/debian/patches-rt/0001-ARM-at91-add-TCB-registers-definitions.patch +++ b/debian/patches-rt/0001-ARM-at91-add-TCB-registers-definitions.patch @@ -1,7 +1,7 @@ From: Alexandre Belloni Date: Thu, 13 Sep 2018 13:30:18 +0200 Subject: [PATCH 1/7] ARM: at91: add TCB registers definitions -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Add registers and bits definitions for the timer counter blocks found on Atmel ARM SoCs. diff --git a/debian/patches-rt/0001-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch b/debian/patches-rt/0001-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch index b07bfe7d5..1df9712af 100644 --- a/debian/patches-rt/0001-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch +++ b/debian/patches-rt/0001-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch @@ -2,7 +2,7 @@ From: Peter Zijlstra Date: Mon, 28 May 2018 15:24:20 +0200 Subject: [PATCH 1/4] Split IRQ-off and zone->lock while freeing pages from PCP list #1 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Split the IRQ-off section while accessing the PCP list from zone->lock while freeing pages. diff --git a/debian/patches-rt/0002-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch b/debian/patches-rt/0002-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch index b5fbd9ee6..d88877d84 100644 --- a/debian/patches-rt/0002-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch +++ b/debian/patches-rt/0002-Split-IRQ-off-and-zone-lock-while-freeing-pages-from.patch @@ -2,7 +2,7 @@ From: Peter Zijlstra Date: Mon, 28 May 2018 15:24:21 +0200 Subject: [PATCH 2/4] Split IRQ-off and zone->lock while freeing pages from PCP list #2 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Split the IRQ-off section while accessing the PCP list from zone->lock while freeing pages. diff --git a/debian/patches-rt/0002-clocksource-drivers-Add-a-new-driver-for-the-Atmel-A.patch b/debian/patches-rt/0002-clocksource-drivers-Add-a-new-driver-for-the-Atmel-A.patch index a07e0ecb5..aa7b12c65 100644 --- a/debian/patches-rt/0002-clocksource-drivers-Add-a-new-driver-for-the-Atmel-A.patch +++ b/debian/patches-rt/0002-clocksource-drivers-Add-a-new-driver-for-the-Atmel-A.patch @@ -2,7 +2,7 @@ From: Alexandre Belloni Date: Thu, 13 Sep 2018 13:30:19 +0200 Subject: [PATCH 2/7] clocksource/drivers: Add a new driver for the Atmel ARM TC blocks -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Add a driver for the Atmel Timer Counter Blocks. This driver provides a clocksource and two clockevent devices. @@ -32,7 +32,7 @@ Signed-off-by: Sebastian Andrzej Siewior --- a/drivers/clocksource/Kconfig +++ b/drivers/clocksource/Kconfig -@@ -403,6 +403,14 @@ config ATMEL_ST +@@ -404,6 +404,14 @@ config ATMEL_ST help Support for the Atmel ST timer. diff --git a/debian/patches-rt/0003-clocksource-drivers-timer-atmel-tcb-add-clockevent-d.patch b/debian/patches-rt/0003-clocksource-drivers-timer-atmel-tcb-add-clockevent-d.patch index bbc368958..80fa614b3 100644 --- a/debian/patches-rt/0003-clocksource-drivers-timer-atmel-tcb-add-clockevent-d.patch +++ b/debian/patches-rt/0003-clocksource-drivers-timer-atmel-tcb-add-clockevent-d.patch @@ -2,7 +2,7 @@ From: Alexandre Belloni Date: Thu, 13 Sep 2018 13:30:20 +0200 Subject: [PATCH 3/7] clocksource/drivers: timer-atmel-tcb: add clockevent device on separate channel -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Add an other clockevent device that uses a separate TCB channel when available. diff --git a/debian/patches-rt/0003-mm-SLxB-change-list_lock-to-raw_spinlock_t.patch b/debian/patches-rt/0003-mm-SLxB-change-list_lock-to-raw_spinlock_t.patch index d8819291d..a37e84717 100644 --- a/debian/patches-rt/0003-mm-SLxB-change-list_lock-to-raw_spinlock_t.patch +++ b/debian/patches-rt/0003-mm-SLxB-change-list_lock-to-raw_spinlock_t.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Mon, 28 May 2018 15:24:22 +0200 Subject: [PATCH 3/4] mm/SLxB: change list_lock to raw_spinlock_t -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The list_lock is used with used with IRQs off on RT. Make it a raw_spinlock_t otherwise the interrupts won't be disabled on -RT. The locking rules remain diff --git a/debian/patches-rt/0004-clocksource-drivers-atmel-pit-make-option-silent.patch b/debian/patches-rt/0004-clocksource-drivers-atmel-pit-make-option-silent.patch index a1cd9486a..170752835 100644 --- a/debian/patches-rt/0004-clocksource-drivers-atmel-pit-make-option-silent.patch +++ b/debian/patches-rt/0004-clocksource-drivers-atmel-pit-make-option-silent.patch @@ -1,7 +1,7 @@ From: Alexandre Belloni Date: Thu, 13 Sep 2018 13:30:21 +0200 Subject: [PATCH 4/7] clocksource/drivers: atmel-pit: make option silent -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz To conform with the other option, make the ATMEL_PIT option silent so it can be selected from the platform @@ -15,7 +15,7 @@ Signed-off-by: Sebastian Andrzej Siewior --- a/drivers/clocksource/Kconfig +++ b/drivers/clocksource/Kconfig -@@ -392,8 +392,11 @@ config ARMV7M_SYSTICK +@@ -393,8 +393,11 @@ config ARMV7M_SYSTICK This options enables support for the ARMv7M system timer unit config ATMEL_PIT diff --git a/debian/patches-rt/0004-mm-SLUB-delay-giving-back-empty-slubs-to-IRQ-enabled.patch b/debian/patches-rt/0004-mm-SLUB-delay-giving-back-empty-slubs-to-IRQ-enabled.patch index 768d83a6b..0fcaf5fb5 100644 --- a/debian/patches-rt/0004-mm-SLUB-delay-giving-back-empty-slubs-to-IRQ-enabled.patch +++ b/debian/patches-rt/0004-mm-SLUB-delay-giving-back-empty-slubs-to-IRQ-enabled.patch @@ -2,7 +2,7 @@ From: Thomas Gleixner Date: Thu, 21 Jun 2018 17:29:19 +0200 Subject: [PATCH 4/4] mm/SLUB: delay giving back empty slubs to IRQ enabled regions -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz __free_slab() is invoked with disabled interrupts which increases the irq-off time while __free_pages() is doing the work. diff --git a/debian/patches-rt/0005-ARM-at91-Implement-clocksource-selection.patch b/debian/patches-rt/0005-ARM-at91-Implement-clocksource-selection.patch index a4d6b3342..9b2218d38 100644 --- a/debian/patches-rt/0005-ARM-at91-Implement-clocksource-selection.patch +++ b/debian/patches-rt/0005-ARM-at91-Implement-clocksource-selection.patch @@ -1,7 +1,7 @@ From: Alexandre Belloni Date: Thu, 13 Sep 2018 13:30:22 +0200 Subject: [PATCH 5/7] ARM: at91: Implement clocksource selection -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Allow selecting and unselecting the PIT clocksource driver so it doesn't have to be compile when unused. diff --git a/debian/patches-rt/0006-ARM-configs-at91-use-new-TCB-timer-driver.patch b/debian/patches-rt/0006-ARM-configs-at91-use-new-TCB-timer-driver.patch index c86827ba7..6e205b03a 100644 --- a/debian/patches-rt/0006-ARM-configs-at91-use-new-TCB-timer-driver.patch +++ b/debian/patches-rt/0006-ARM-configs-at91-use-new-TCB-timer-driver.patch @@ -1,7 +1,7 @@ From: Alexandre Belloni Date: Thu, 13 Sep 2018 13:30:23 +0200 Subject: [PATCH 6/7] ARM: configs: at91: use new TCB timer driver -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Unselecting ATMEL_TCLIB switches the TCB timer driver from tcb_clksrc to timer-atmel-tcb. diff --git a/debian/patches-rt/0007-ARM-configs-at91-unselect-PIT.patch b/debian/patches-rt/0007-ARM-configs-at91-unselect-PIT.patch index 0a3cef5c5..83ed10780 100644 --- a/debian/patches-rt/0007-ARM-configs-at91-unselect-PIT.patch +++ b/debian/patches-rt/0007-ARM-configs-at91-unselect-PIT.patch @@ -1,7 +1,7 @@ From: Alexandre Belloni Date: Thu, 13 Sep 2018 13:30:24 +0200 Subject: [PATCH 7/7] ARM: configs: at91: unselect PIT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The PIT is not required anymore to successfully boot and may actually harm in case preempt-rt is used because the PIT interrupt is shared. diff --git a/debian/patches-rt/ARM-enable-irq-in-translation-section-permission-fau.patch b/debian/patches-rt/ARM-enable-irq-in-translation-section-permission-fau.patch index 5ffefdc10..3798591f6 100644 --- a/debian/patches-rt/ARM-enable-irq-in-translation-section-permission-fau.patch +++ b/debian/patches-rt/ARM-enable-irq-in-translation-section-permission-fau.patch @@ -1,7 +1,7 @@ From: "Yadi.hu" Date: Wed, 10 Dec 2014 10:32:09 +0800 Subject: ARM: enable irq in translation/section permission fault handlers -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Probably happens on all ARM, with CONFIG_PREEMPT_RT_FULL diff --git a/debian/patches-rt/Drivers-hv-vmbus-include-header-for-get_irq_regs.patch b/debian/patches-rt/Drivers-hv-vmbus-include-header-for-get_irq_regs.patch index 20036c5c7..e486de5d0 100644 --- a/debian/patches-rt/Drivers-hv-vmbus-include-header-for-get_irq_regs.patch +++ b/debian/patches-rt/Drivers-hv-vmbus-include-header-for-get_irq_regs.patch @@ -4,7 +4,7 @@ Subject: [PATCH] Drivers: hv: vmbus: include header for get_irq_regs() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz On !RT the header file get_irq_regs() gets pulled in via other header files. On RT it does not and the build fails: diff --git a/debian/patches-rt/EXP-rcu-Revert-expedited-GP-parallelization-cleverne.patch b/debian/patches-rt/EXP-rcu-Revert-expedited-GP-parallelization-cleverne.patch index 6563cd8b5..278f08023 100644 --- a/debian/patches-rt/EXP-rcu-Revert-expedited-GP-parallelization-cleverne.patch +++ b/debian/patches-rt/EXP-rcu-Revert-expedited-GP-parallelization-cleverne.patch @@ -1,7 +1,7 @@ From: Paul E. McKenney Date: Mon, 29 Oct 2018 11:53:01 +0100 Subject: [PATCH] EXP rcu: Revert expedited GP parallelization cleverness -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz (Commit 258ba8e089db23f760139266c232f01bad73f85c from linux-rcu) diff --git a/debian/patches-rt/HACK-printk-drop-the-logbuf_lock-more-often.patch b/debian/patches-rt/HACK-printk-drop-the-logbuf_lock-more-often.patch index cc0ec0e7b..34e98ff84 100644 --- a/debian/patches-rt/HACK-printk-drop-the-logbuf_lock-more-often.patch +++ b/debian/patches-rt/HACK-printk-drop-the-logbuf_lock-more-often.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 21 Mar 2013 19:01:05 +0100 Subject: printk: Drop the logbuf_lock more often -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The lock is hold with irgs off. The latency drops 500us+ on my arm bugs with a "full" buffer after executing "dmesg" on the shell. diff --git a/debian/patches-rt/KVM-arm-arm64-downgrade-preempt_disable-d-region-to-.patch b/debian/patches-rt/KVM-arm-arm64-downgrade-preempt_disable-d-region-to-.patch index 34b9bfb5e..861443bc7 100644 --- a/debian/patches-rt/KVM-arm-arm64-downgrade-preempt_disable-d-region-to-.patch +++ b/debian/patches-rt/KVM-arm-arm64-downgrade-preempt_disable-d-region-to-.patch @@ -1,7 +1,7 @@ From: Josh Cartwright Date: Thu, 11 Feb 2016 11:54:01 -0600 Subject: KVM: arm/arm64: downgrade preempt_disable()d region to migrate_disable() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz kvm_arch_vcpu_ioctl_run() disables the use of preemption when updating the vgic and timer states to prevent the calling task from migrating to diff --git a/debian/patches-rt/NFSv4-replace-seqcount_t-with-a-seqlock_t.patch b/debian/patches-rt/NFSv4-replace-seqcount_t-with-a-seqlock_t.patch index ef9647c81..db95bd32e 100644 --- a/debian/patches-rt/NFSv4-replace-seqcount_t-with-a-seqlock_t.patch +++ b/debian/patches-rt/NFSv4-replace-seqcount_t-with-a-seqlock_t.patch @@ -5,7 +5,7 @@ Cc: Anna Schumaker , linux-nfs@vger.kernel.org, linux-kernel@vger.kernel.org, tglx@linutronix.de Subject: NFSv4: replace seqcount_t with a seqlock_t -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The raw_write_seqcount_begin() in nfs4_reclaim_open_state() bugs me because it maps to preempt_disable() in -RT which I can't have at this diff --git a/debian/patches-rt/add_migrate_disable.patch b/debian/patches-rt/add_migrate_disable.patch index 0f48a45d9..10056eeba 100644 --- a/debian/patches-rt/add_migrate_disable.patch +++ b/debian/patches-rt/add_migrate_disable.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Sat, 27 May 2017 19:02:06 +0200 Subject: kernel/sched/core: add migrate_disable() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz --- include/linux/preempt.h | 23 ++++++++ diff --git a/debian/patches-rt/apparmor-use-a-locallock-instead-preempt_disable.patch b/debian/patches-rt/apparmor-use-a-locallock-instead-preempt_disable.patch index 98692034a..e2f354d79 100644 --- a/debian/patches-rt/apparmor-use-a-locallock-instead-preempt_disable.patch +++ b/debian/patches-rt/apparmor-use-a-locallock-instead-preempt_disable.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 11 Oct 2017 17:43:49 +0200 Subject: apparmor: use a locallock instead preempt_disable() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz get_buffers() disables preemption which acts as a lock for the per-CPU variable. Since we can't disable preemption here on RT, a local_lock is diff --git a/debian/patches-rt/arch-arm64-Add-lazy-preempt-support.patch b/debian/patches-rt/arch-arm64-Add-lazy-preempt-support.patch index 633bc0965..80652ff2d 100644 --- a/debian/patches-rt/arch-arm64-Add-lazy-preempt-support.patch +++ b/debian/patches-rt/arch-arm64-Add-lazy-preempt-support.patch @@ -1,7 +1,7 @@ From: Anders Roxell Date: Thu, 14 May 2015 17:52:17 +0200 Subject: arch/arm64: Add lazy preempt support -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz arm64 is missing support for PREEMPT_RT. The main feature which is lacking is support for lazy preemption. The arch-specific entry code, diff --git a/debian/patches-rt/arm-convert-boot-lock-to-raw.patch b/debian/patches-rt/arm-convert-boot-lock-to-raw.patch index 1d2d61bcf..e39ce6e18 100644 --- a/debian/patches-rt/arm-convert-boot-lock-to-raw.patch +++ b/debian/patches-rt/arm-convert-boot-lock-to-raw.patch @@ -1,7 +1,7 @@ From: Frank Rowand Date: Mon, 19 Sep 2011 14:51:14 -0700 Subject: arm: Convert arm boot_lock to raw -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The arm boot_lock is used by the secondary processor startup code. The locking task is the idle thread, which has idle->sched_class == &idle_sched_class. diff --git a/debian/patches-rt/arm-disable-NEON-in-kernel-mode.patch b/debian/patches-rt/arm-disable-NEON-in-kernel-mode.patch index d2dece458..1b7df7308 100644 --- a/debian/patches-rt/arm-disable-NEON-in-kernel-mode.patch +++ b/debian/patches-rt/arm-disable-NEON-in-kernel-mode.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 1 Dec 2017 10:42:03 +0100 Subject: [PATCH] arm*: disable NEON in kernel mode -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz NEON in kernel mode is used by the crypto algorithms and raid6 code. While the raid6 code looks okay, the crypto algorithms do not: NEON diff --git a/debian/patches-rt/arm-enable-highmem-for-rt.patch b/debian/patches-rt/arm-enable-highmem-for-rt.patch index 2b62061c1..bd95b17c9 100644 --- a/debian/patches-rt/arm-enable-highmem-for-rt.patch +++ b/debian/patches-rt/arm-enable-highmem-for-rt.patch @@ -1,7 +1,7 @@ Subject: arm: Enable highmem for rt From: Thomas Gleixner Date: Wed, 13 Feb 2013 11:03:11 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz fixup highmem for ARM. diff --git a/debian/patches-rt/arm-highmem-flush-tlb-on-unmap.patch b/debian/patches-rt/arm-highmem-flush-tlb-on-unmap.patch index 1118be544..396629b43 100644 --- a/debian/patches-rt/arm-highmem-flush-tlb-on-unmap.patch +++ b/debian/patches-rt/arm-highmem-flush-tlb-on-unmap.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Mon, 11 Mar 2013 21:37:27 +0100 Subject: arm/highmem: Flush tlb on unmap -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The tlb should be flushed on unmap and thus make the mapping entry invalid. This is only done in the non-debug case which does not look diff --git a/debian/patches-rt/arm-include-definition-for-cpumask_t.patch b/debian/patches-rt/arm-include-definition-for-cpumask_t.patch index 60c769fcf..42dfb0c62 100644 --- a/debian/patches-rt/arm-include-definition-for-cpumask_t.patch +++ b/debian/patches-rt/arm-include-definition-for-cpumask_t.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 22 Dec 2016 17:28:33 +0100 Subject: [PATCH] arm: include definition for cpumask_t -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz This definition gets pulled in by other files. With the (later) split of RCU and spinlock.h it won't compile anymore. diff --git a/debian/patches-rt/arm-kprobe-replace-patch_lock-to-raw-lock.patch b/debian/patches-rt/arm-kprobe-replace-patch_lock-to-raw-lock.patch index 325c28ee2..47e4069a1 100644 --- a/debian/patches-rt/arm-kprobe-replace-patch_lock-to-raw-lock.patch +++ b/debian/patches-rt/arm-kprobe-replace-patch_lock-to-raw-lock.patch @@ -1,7 +1,7 @@ From: Yang Shi Date: Thu, 10 Nov 2016 16:17:55 -0800 Subject: [PATCH] arm: kprobe: replace patch_lock to raw lock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz When running kprobe on -rt kernel, the below bug is caught: diff --git a/debian/patches-rt/arm-preempt-lazy-support.patch b/debian/patches-rt/arm-preempt-lazy-support.patch index 742e3fe51..f13bce5db 100644 --- a/debian/patches-rt/arm-preempt-lazy-support.patch +++ b/debian/patches-rt/arm-preempt-lazy-support.patch @@ -1,7 +1,7 @@ Subject: arm: Add support for lazy preemption From: Thomas Gleixner Date: Wed, 31 Oct 2012 12:04:11 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Implement the arm pieces for lazy preempt. diff --git a/debian/patches-rt/arm-unwind-use_raw_lock.patch b/debian/patches-rt/arm-unwind-use_raw_lock.patch index 7f0064b55..5f4147fe4 100644 --- a/debian/patches-rt/arm-unwind-use_raw_lock.patch +++ b/debian/patches-rt/arm-unwind-use_raw_lock.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 20 Sep 2013 14:31:54 +0200 Subject: arm/unwind: use a raw_spin_lock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Mostly unwind is done with irqs enabled however SLUB may call it with irqs disabled while creating a new SLUB cache. diff --git a/debian/patches-rt/arm64-KVM-compute_layout-before-altenates-are-applie.patch b/debian/patches-rt/arm64-KVM-compute_layout-before-altenates-are-applie.patch index c270895e8..0b13d2d23 100644 --- a/debian/patches-rt/arm64-KVM-compute_layout-before-altenates-are-applie.patch +++ b/debian/patches-rt/arm64-KVM-compute_layout-before-altenates-are-applie.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 26 Jul 2018 09:13:42 +0200 Subject: [PATCH] arm64: KVM: compute_layout before altenates are applied -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz compute_layout() is invoked as part of an alternative fixup under stop_machine() and needs a sleeping lock as part of get_random_long(). diff --git a/debian/patches-rt/arm64-fpsimd-use-preemp_disable-in-addition-to-local.patch b/debian/patches-rt/arm64-fpsimd-use-preemp_disable-in-addition-to-local.patch index 2913f77ee..e6bf0f062 100644 --- a/debian/patches-rt/arm64-fpsimd-use-preemp_disable-in-addition-to-local.patch +++ b/debian/patches-rt/arm64-fpsimd-use-preemp_disable-in-addition-to-local.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 25 Jul 2018 14:02:38 +0200 Subject: [PATCH] arm64: fpsimd: use preemp_disable in addition to local_bh_disable() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz In v4.16-RT I noticed a number of warnings from task_fpsimd_load(). The code disables BH and expects that it is not preemptible. On -RT the diff --git a/debian/patches-rt/at91_dont_enable_disable_clock.patch b/debian/patches-rt/at91_dont_enable_disable_clock.patch index 21f5ce7e2..f1bd90bc0 100644 --- a/debian/patches-rt/at91_dont_enable_disable_clock.patch +++ b/debian/patches-rt/at91_dont_enable_disable_clock.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 09 Mar 2016 10:51:06 +0100 Subject: arm: at91: do not disable/enable clocks in a row -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Currently the driver will disable the clock and enable it one line later if it is switching from periodic mode into one shot. diff --git a/debian/patches-rt/block-blk-mq-move-blk_queue_usage_counter_release-in.patch b/debian/patches-rt/block-blk-mq-move-blk_queue_usage_counter_release-in.patch index 50487d577..a14542065 100644 --- a/debian/patches-rt/block-blk-mq-move-blk_queue_usage_counter_release-in.patch +++ b/debian/patches-rt/block-blk-mq-move-blk_queue_usage_counter_release-in.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior Date: Tue, 13 Mar 2018 13:49:16 +0100 Subject: [PATCH] block: blk-mq: move blk_queue_usage_counter_release() into process context -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz | BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:914 | in_atomic(): 1, irqs_disabled(): 0, pid: 255, name: kworker/u257:6 diff --git a/debian/patches-rt/block-mq-don-t-complete-requests-via-IPI.patch b/debian/patches-rt/block-mq-don-t-complete-requests-via-IPI.patch index a911b24a2..080893991 100644 --- a/debian/patches-rt/block-mq-don-t-complete-requests-via-IPI.patch +++ b/debian/patches-rt/block-mq-don-t-complete-requests-via-IPI.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 29 Jan 2015 15:10:08 +0100 Subject: block/mq: don't complete requests via IPI -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The IPI runs in hardirq context and there are sleeping locks. This patch moves the completion into a workqueue. diff --git a/debian/patches-rt/block-mq-drop-preempt-disable.patch b/debian/patches-rt/block-mq-drop-preempt-disable.patch index b2ae09d6e..5115e8a5f 100644 --- a/debian/patches-rt/block-mq-drop-preempt-disable.patch +++ b/debian/patches-rt/block-mq-drop-preempt-disable.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Tue, 14 Jul 2015 14:26:34 +0200 Subject: block/mq: do not invoke preempt_disable() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz preempt_disable() and get_cpu() don't play well together with the sleeping locks it tries to allocate later. diff --git a/debian/patches-rt/block-mq-use-cpu_light.patch b/debian/patches-rt/block-mq-use-cpu_light.patch index 8627e49ec..fd01e3dc9 100644 --- a/debian/patches-rt/block-mq-use-cpu_light.patch +++ b/debian/patches-rt/block-mq-use-cpu_light.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 9 Apr 2014 10:37:23 +0200 Subject: block: mq: use cpu_light() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz there is a might sleep splat because get_cpu() disables preemption and later we grab a lock. As a workaround for this we use get_cpu_light(). diff --git a/debian/patches-rt/block-use-cpu-chill.patch b/debian/patches-rt/block-use-cpu-chill.patch index cb26f8996..3c3c75e50 100644 --- a/debian/patches-rt/block-use-cpu-chill.patch +++ b/debian/patches-rt/block-use-cpu-chill.patch @@ -1,7 +1,7 @@ Subject: block: Use cpu_chill() for retry loops From: Thomas Gleixner Date: Thu, 20 Dec 2012 18:28:26 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Retry loops on RT might loop forever when the modifying side was preempted. Steven also observed a live lock when there was a diff --git a/debian/patches-rt/cgroup-use-irqsave-in-cgroup_rstat_flush_locked.patch b/debian/patches-rt/cgroup-use-irqsave-in-cgroup_rstat_flush_locked.patch index a0efbf212..1d5c51a46 100644 --- a/debian/patches-rt/cgroup-use-irqsave-in-cgroup_rstat_flush_locked.patch +++ b/debian/patches-rt/cgroup-use-irqsave-in-cgroup_rstat_flush_locked.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Tue, 3 Jul 2018 18:19:48 +0200 Subject: [PATCH] cgroup: use irqsave in cgroup_rstat_flush_locked() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz All callers of cgroup_rstat_flush_locked() acquire cgroup_rstat_lock either with spin_lock_irq() or spin_lock_irqsave(). diff --git a/debian/patches-rt/cgroups-use-simple-wait-in-css_release.patch b/debian/patches-rt/cgroups-use-simple-wait-in-css_release.patch index 264cc5ce6..b9156ff8a 100644 --- a/debian/patches-rt/cgroups-use-simple-wait-in-css_release.patch +++ b/debian/patches-rt/cgroups-use-simple-wait-in-css_release.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 13 Feb 2015 15:52:24 +0100 Subject: cgroups: use simple wait in css_release() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz To avoid: |BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:914 @@ -53,7 +53,7 @@ Signed-off-by: Sebastian Andrzej Siewior /* --- a/kernel/cgroup/cgroup.c +++ b/kernel/cgroup/cgroup.c -@@ -4620,10 +4620,10 @@ static void css_free_rwork_fn(struct wor +@@ -4625,10 +4625,10 @@ static void css_free_rwork_fn(struct wor } } @@ -66,7 +66,7 @@ Signed-off-by: Sebastian Andrzej Siewior struct cgroup_subsys *ss = css->ss; struct cgroup *cgrp = css->cgroup; -@@ -4683,8 +4683,8 @@ static void css_release(struct percpu_re +@@ -4688,8 +4688,8 @@ static void css_release(struct percpu_re struct cgroup_subsys_state *css = container_of(ref, struct cgroup_subsys_state, refcnt); @@ -77,7 +77,7 @@ Signed-off-by: Sebastian Andrzej Siewior } static void init_and_link_css(struct cgroup_subsys_state *css, -@@ -5406,6 +5406,7 @@ static int __init cgroup_wq_init(void) +@@ -5411,6 +5411,7 @@ static int __init cgroup_wq_init(void) */ cgroup_destroy_wq = alloc_workqueue("cgroup_destroy", 0, 1); BUG_ON(!cgroup_destroy_wq); diff --git a/debian/patches-rt/clocksource-tclib-allow-higher-clockrates.patch b/debian/patches-rt/clocksource-tclib-allow-higher-clockrates.patch index 3c1e8cb59..28e51d1a0 100644 --- a/debian/patches-rt/clocksource-tclib-allow-higher-clockrates.patch +++ b/debian/patches-rt/clocksource-tclib-allow-higher-clockrates.patch @@ -1,7 +1,7 @@ From: Benedikt Spranger Date: Mon, 8 Mar 2010 18:57:04 +0100 Subject: clocksource: TCLIB: Allow higher clock rates for clock events -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz As default the TCLIB uses the 32KiHz base clock rate for clock events. Add a compile time selection to allow higher clock resulution. diff --git a/debian/patches-rt/completion-use-simple-wait-queues.patch b/debian/patches-rt/completion-use-simple-wait-queues.patch index 7c4cfbf2c..a77b3dc31 100644 --- a/debian/patches-rt/completion-use-simple-wait-queues.patch +++ b/debian/patches-rt/completion-use-simple-wait-queues.patch @@ -1,7 +1,7 @@ Subject: completion: Use simple wait queues From: Thomas Gleixner Date: Fri, 11 Jan 2013 11:23:51 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Completions have no long lasting callbacks and therefor do not need the complex waitqueue variant. Use simple waitqueues which reduces the diff --git a/debian/patches-rt/cond-resched-lock-rt-tweak.patch b/debian/patches-rt/cond-resched-lock-rt-tweak.patch index 3a4631049..08b19e76b 100644 --- a/debian/patches-rt/cond-resched-lock-rt-tweak.patch +++ b/debian/patches-rt/cond-resched-lock-rt-tweak.patch @@ -1,7 +1,7 @@ Subject: sched: Use the proper LOCK_OFFSET for cond_resched() From: Thomas Gleixner Date: Sun, 17 Jul 2011 22:51:33 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz RT does not increment preempt count when a 'sleeping' spinlock is locked. Update PREEMPT_LOCK_OFFSET for that case. diff --git a/debian/patches-rt/connector-cn_proc-Protect-send_msg-with-a-local-lock.patch b/debian/patches-rt/connector-cn_proc-Protect-send_msg-with-a-local-lock.patch index d3d7960f2..098ec4d34 100644 --- a/debian/patches-rt/connector-cn_proc-Protect-send_msg-with-a-local-lock.patch +++ b/debian/patches-rt/connector-cn_proc-Protect-send_msg-with-a-local-lock.patch @@ -2,7 +2,7 @@ From: Mike Galbraith Date: Sun, 16 Oct 2016 05:11:54 +0200 Subject: [PATCH] connector/cn_proc: Protect send_msg() with a local lock on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz |BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:931 |in_atomic(): 1, irqs_disabled(): 0, pid: 31807, name: sleep diff --git a/debian/patches-rt/cpu-hotplug--Implement-CPU-pinning.patch b/debian/patches-rt/cpu-hotplug--Implement-CPU-pinning.patch index 04e434c17..27780a195 100644 --- a/debian/patches-rt/cpu-hotplug--Implement-CPU-pinning.patch +++ b/debian/patches-rt/cpu-hotplug--Implement-CPU-pinning.patch @@ -1,7 +1,7 @@ Subject: cpu/hotplug: Implement CPU pinning From: Thomas Gleixner Date: Wed, 19 Jul 2017 17:31:20 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Signed-off-by: Thomas Gleixner --- diff --git a/debian/patches-rt/cpufreq-drop-K8-s-driver-from-beeing-selected.patch b/debian/patches-rt/cpufreq-drop-K8-s-driver-from-beeing-selected.patch index 85fda384f..54d127528 100644 --- a/debian/patches-rt/cpufreq-drop-K8-s-driver-from-beeing-selected.patch +++ b/debian/patches-rt/cpufreq-drop-K8-s-driver-from-beeing-selected.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 9 Apr 2015 15:23:01 +0200 Subject: cpufreq: drop K8's driver from beeing selected -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Ralf posted a picture of a backtrace from diff --git a/debian/patches-rt/cpumask-disable-offstack-on-rt.patch b/debian/patches-rt/cpumask-disable-offstack-on-rt.patch index 000cad828..95ae2b503 100644 --- a/debian/patches-rt/cpumask-disable-offstack-on-rt.patch +++ b/debian/patches-rt/cpumask-disable-offstack-on-rt.patch @@ -1,7 +1,7 @@ Subject: cpumask: Disable CONFIG_CPUMASK_OFFSTACK for RT From: Thomas Gleixner Date: Wed, 14 Dec 2011 01:03:49 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz There are "valid" GFP_ATOMIC allocations such as diff --git a/debian/patches-rt/cpuset-Convert-callback_lock-to-raw_spinlock_t.patch b/debian/patches-rt/cpuset-Convert-callback_lock-to-raw_spinlock_t.patch index 8c3b226a7..9eec702f6 100644 --- a/debian/patches-rt/cpuset-Convert-callback_lock-to-raw_spinlock_t.patch +++ b/debian/patches-rt/cpuset-Convert-callback_lock-to-raw_spinlock_t.patch @@ -1,7 +1,7 @@ From: Mike Galbraith Date: Sun, 8 Jan 2017 09:32:25 +0100 Subject: [PATCH] cpuset: Convert callback_lock to raw_spinlock_t -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The two commits below add up to a cpuset might_sleep() splat for RT: diff --git a/debian/patches-rt/crypto-Reduce-preempt-disabled-regions-more-algos.patch b/debian/patches-rt/crypto-Reduce-preempt-disabled-regions-more-algos.patch index 4a90702da..4f5d67fd6 100644 --- a/debian/patches-rt/crypto-Reduce-preempt-disabled-regions-more-algos.patch +++ b/debian/patches-rt/crypto-Reduce-preempt-disabled-regions-more-algos.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 21 Feb 2014 17:24:04 +0100 Subject: crypto: Reduce preempt disabled regions, more algos -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Don Estabrook reported | kernel: WARNING: CPU: 2 PID: 858 at kernel/sched/core.c:2428 migrate_disable+0xed/0x100() diff --git a/debian/patches-rt/crypto-caam-qi-simplify-CGR-allocation-freeing.patch b/debian/patches-rt/crypto-caam-qi-simplify-CGR-allocation-freeing.patch index e5a205875..0ad090688 100644 --- a/debian/patches-rt/crypto-caam-qi-simplify-CGR-allocation-freeing.patch +++ b/debian/patches-rt/crypto-caam-qi-simplify-CGR-allocation-freeing.patch @@ -4,7 +4,7 @@ Subject: [PATCH] crypto: caam/qi - simplify CGR allocation, freeing MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz [Upstream commit 29e83c757006fd751966bdc53392bb22d74179c6] diff --git a/debian/patches-rt/crypto-cryptd-add-a-lock-instead-preempt_disable-loc.patch b/debian/patches-rt/crypto-cryptd-add-a-lock-instead-preempt_disable-loc.patch index 044bbf57e..1f0b918f9 100644 --- a/debian/patches-rt/crypto-cryptd-add-a-lock-instead-preempt_disable-loc.patch +++ b/debian/patches-rt/crypto-cryptd-add-a-lock-instead-preempt_disable-loc.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 26 Jul 2018 18:52:00 +0200 Subject: [PATCH] crypto: cryptd - add a lock instead preempt_disable/local_bh_disable -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz cryptd has a per-CPU lock which protected with local_bh_disable() and preempt_disable(). diff --git a/debian/patches-rt/crypto-limit-more-FPU-enabled-sections.patch b/debian/patches-rt/crypto-limit-more-FPU-enabled-sections.patch index 9426b53d4..3bcff2ba4 100644 --- a/debian/patches-rt/crypto-limit-more-FPU-enabled-sections.patch +++ b/debian/patches-rt/crypto-limit-more-FPU-enabled-sections.patch @@ -4,7 +4,7 @@ Subject: [PATCH] crypto: limit more FPU-enabled sections MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Those crypto drivers use SSE/AVX/… for their crypto work and in order to do so in kernel they need to enable the "FPU" in kernel mode which diff --git a/debian/patches-rt/crypto-scompress-serialize-RT-percpu-scratch-buffer-.patch b/debian/patches-rt/crypto-scompress-serialize-RT-percpu-scratch-buffer-.patch index 4476f8358..8dc9f7d3f 100644 --- a/debian/patches-rt/crypto-scompress-serialize-RT-percpu-scratch-buffer-.patch +++ b/debian/patches-rt/crypto-scompress-serialize-RT-percpu-scratch-buffer-.patch @@ -2,7 +2,7 @@ From: Mike Galbraith Date: Wed, 11 Jul 2018 17:14:47 +0200 Subject: [PATCH] crypto: scompress - serialize RT percpu scratch buffer access with a local lock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz | BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:974 | in_atomic(): 1, irqs_disabled(): 0, pid: 1401, name: cryptomgr_test diff --git a/debian/patches-rt/debugobjects-rt.patch b/debian/patches-rt/debugobjects-rt.patch index 4c4cc7a15..c8b19a2a9 100644 --- a/debian/patches-rt/debugobjects-rt.patch +++ b/debian/patches-rt/debugobjects-rt.patch @@ -1,7 +1,7 @@ Subject: debugobjects: Make RT aware From: Thomas Gleixner Date: Sun, 17 Jul 2011 21:41:35 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Avoid filling the pool / allocating memory with irqs off(). diff --git a/debian/patches-rt/dm-rq-remove-BUG_ON-irqs_disabled-check.patch b/debian/patches-rt/dm-rq-remove-BUG_ON-irqs_disabled-check.patch index c82ece84d..d11773fb8 100644 --- a/debian/patches-rt/dm-rq-remove-BUG_ON-irqs_disabled-check.patch +++ b/debian/patches-rt/dm-rq-remove-BUG_ON-irqs_disabled-check.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Tue, 27 Mar 2018 16:24:15 +0200 Subject: [PATCH] dm rq: remove BUG_ON(!irqs_disabled) check -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz In commit 052189a2ec95 ("dm: remove superfluous irq disablement in dm_request_fn") the spin_lock_irq() was replaced with spin_lock() + a diff --git a/debian/patches-rt/drivers-block-zram-Replace-bit-spinlocks-with-rtmute.patch b/debian/patches-rt/drivers-block-zram-Replace-bit-spinlocks-with-rtmute.patch index 53c98b38b..a285aadd2 100644 --- a/debian/patches-rt/drivers-block-zram-Replace-bit-spinlocks-with-rtmute.patch +++ b/debian/patches-rt/drivers-block-zram-Replace-bit-spinlocks-with-rtmute.patch @@ -2,7 +2,7 @@ From: Mike Galbraith Date: Thu, 31 Mar 2016 04:08:28 +0200 Subject: [PATCH] drivers/block/zram: Replace bit spinlocks with rtmutex for -rt -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz They're nondeterministic, and lead to ___might_sleep() splats in -rt. OTOH, they're a lot less wasteful than an rtmutex per page. @@ -55,7 +55,7 @@ Signed-off-by: Sebastian Andrzej Siewior static inline bool init_done(struct zram *zram) { -@@ -898,6 +923,8 @@ static DEVICE_ATTR_RO(io_stat); +@@ -900,6 +925,8 @@ static DEVICE_ATTR_RO(io_stat); static DEVICE_ATTR_RO(mm_stat); static DEVICE_ATTR_RO(debug_stat); @@ -64,7 +64,7 @@ Signed-off-by: Sebastian Andrzej Siewior static void zram_meta_free(struct zram *zram, u64 disksize) { size_t num_pages = disksize >> PAGE_SHIFT; -@@ -928,6 +955,7 @@ static bool zram_meta_alloc(struct zram +@@ -930,6 +957,7 @@ static bool zram_meta_alloc(struct zram if (!huge_class_size) huge_class_size = zs_huge_class_size(zram->mem_pool); diff --git a/debian/patches-rt/drivers-tty-fix-omap-lock-crap.patch b/debian/patches-rt/drivers-tty-fix-omap-lock-crap.patch index 3dede4ddb..417e652a5 100644 --- a/debian/patches-rt/drivers-tty-fix-omap-lock-crap.patch +++ b/debian/patches-rt/drivers-tty-fix-omap-lock-crap.patch @@ -1,7 +1,7 @@ Subject: tty/serial/omap: Make the locking RT aware From: Thomas Gleixner Date: Thu, 28 Jul 2011 13:32:57 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The lock is a sleeping lock and local_irq_save() is not the optimsation we are looking for. Redo it to make it work on -RT and diff --git a/debian/patches-rt/drivers-tty-pl011-irq-disable-madness.patch b/debian/patches-rt/drivers-tty-pl011-irq-disable-madness.patch index 62ed7c3ce..f39426bed 100644 --- a/debian/patches-rt/drivers-tty-pl011-irq-disable-madness.patch +++ b/debian/patches-rt/drivers-tty-pl011-irq-disable-madness.patch @@ -1,7 +1,7 @@ Subject: tty/serial/pl011: Make the locking work on RT From: Thomas Gleixner Date: Tue, 08 Jan 2013 21:36:51 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The lock is a sleeping lock and local_irq_save() is not the optimsation we are looking for. Redo it to make it work on -RT and non-RT. diff --git a/debian/patches-rt/drivers-zram-Don-t-disable-preemption-in-zcomp_strea.patch b/debian/patches-rt/drivers-zram-Don-t-disable-preemption-in-zcomp_strea.patch index 2763cdca8..516a55db0 100644 --- a/debian/patches-rt/drivers-zram-Don-t-disable-preemption-in-zcomp_strea.patch +++ b/debian/patches-rt/drivers-zram-Don-t-disable-preemption-in-zcomp_strea.patch @@ -2,7 +2,7 @@ From: Mike Galbraith Date: Thu, 20 Oct 2016 11:15:22 +0200 Subject: [PATCH] drivers/zram: Don't disable preemption in zcomp_stream_get/put() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz In v4.7, the driver switched to percpu compression streams, disabling preemption via get/put_cpu_ptr(). Use a per-zcomp_strm lock here. We @@ -63,7 +63,7 @@ Signed-off-by: Sebastian Andrzej Siewior /* dynamic per-device compression frontend */ --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c -@@ -1014,6 +1014,7 @@ static int __zram_bvec_read(struct zram +@@ -1016,6 +1016,7 @@ static int __zram_bvec_read(struct zram unsigned long handle; unsigned int size; void *src, *dst; @@ -71,7 +71,7 @@ Signed-off-by: Sebastian Andrzej Siewior if (zram_wb_enabled(zram)) { zram_slot_lock(zram, index); -@@ -1048,6 +1049,7 @@ static int __zram_bvec_read(struct zram +@@ -1050,6 +1051,7 @@ static int __zram_bvec_read(struct zram size = zram_get_obj_size(zram, index); @@ -79,7 +79,7 @@ Signed-off-by: Sebastian Andrzej Siewior src = zs_map_object(zram->mem_pool, handle, ZS_MM_RO); if (size == PAGE_SIZE) { dst = kmap_atomic(page); -@@ -1055,14 +1057,13 @@ static int __zram_bvec_read(struct zram +@@ -1057,14 +1059,13 @@ static int __zram_bvec_read(struct zram kunmap_atomic(dst); ret = 0; } else { diff --git a/debian/patches-rt/drivers-zram-fix-zcomp_stream_get-smp_processor_id-u.patch b/debian/patches-rt/drivers-zram-fix-zcomp_stream_get-smp_processor_id-u.patch index 716178e63..4cd7e43c6 100644 --- a/debian/patches-rt/drivers-zram-fix-zcomp_stream_get-smp_processor_id-u.patch +++ b/debian/patches-rt/drivers-zram-fix-zcomp_stream_get-smp_processor_id-u.patch @@ -2,7 +2,7 @@ From: Mike Galbraith Date: Wed, 23 Aug 2017 11:57:29 +0200 Subject: [PATCH] drivers/zram: fix zcomp_stream_get() smp_processor_id() use in preemptible code -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Use get_local_ptr() instead this_cpu_ptr() to avoid a warning regarding smp_processor_id() in preemptible code. diff --git a/debian/patches-rt/drm-i915-disable-tracing-on-RT.patch b/debian/patches-rt/drm-i915-disable-tracing-on-RT.patch index 3673402b6..683fd3509 100644 --- a/debian/patches-rt/drm-i915-disable-tracing-on-RT.patch +++ b/debian/patches-rt/drm-i915-disable-tracing-on-RT.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 6 Dec 2018 09:52:20 +0100 Subject: [PATCH] drm/i915: disable tracing on -RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Luca Abeni reported this: | BUG: scheduling while atomic: kworker/u8:2/15203/0x00000003 diff --git a/debian/patches-rt/drm-i915-skip-DRM_I915_LOW_LEVEL_TRACEPOINTS-with-NO.patch b/debian/patches-rt/drm-i915-skip-DRM_I915_LOW_LEVEL_TRACEPOINTS-with-NO.patch index 502c3a8fb..d654d96f5 100644 --- a/debian/patches-rt/drm-i915-skip-DRM_I915_LOW_LEVEL_TRACEPOINTS-with-NO.patch +++ b/debian/patches-rt/drm-i915-skip-DRM_I915_LOW_LEVEL_TRACEPOINTS-with-NO.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 19 Dec 2018 10:47:02 +0100 Subject: [PATCH] drm/i915: skip DRM_I915_LOW_LEVEL_TRACEPOINTS with NOTRACE -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The order of the header files is important. If this header file is included after tracepoint.h was included then the NOTRACE here becomes a diff --git a/debian/patches-rt/drmi915_Use_local_lockunlock_irq()_in_intel_pipe_update_startend().patch b/debian/patches-rt/drmi915_Use_local_lockunlock_irq()_in_intel_pipe_update_startend().patch index 9834daaf9..644764b3a 100644 --- a/debian/patches-rt/drmi915_Use_local_lockunlock_irq()_in_intel_pipe_update_startend().patch +++ b/debian/patches-rt/drmi915_Use_local_lockunlock_irq()_in_intel_pipe_update_startend().patch @@ -1,7 +1,7 @@ Subject: drm,i915: Use local_lock/unlock_irq() in intel_pipe_update_start/end() From: Mike Galbraith Date: Sat, 27 Feb 2016 09:01:42 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz [ 8.014039] BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:918 diff --git a/debian/patches-rt/drmradeoni915_Use_preempt_disableenable_rt()_where_recommended.patch b/debian/patches-rt/drmradeoni915_Use_preempt_disableenable_rt()_where_recommended.patch index 22754acbc..cb5b935f9 100644 --- a/debian/patches-rt/drmradeoni915_Use_preempt_disableenable_rt()_where_recommended.patch +++ b/debian/patches-rt/drmradeoni915_Use_preempt_disableenable_rt()_where_recommended.patch @@ -1,7 +1,7 @@ Subject: drm,radeon,i915: Use preempt_disable/enable_rt() where recommended From: Mike Galbraith Date: Sat, 27 Feb 2016 08:09:11 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz DRM folks identified the spots, so use them. diff --git a/debian/patches-rt/efi-Allow-efi-runtime.patch b/debian/patches-rt/efi-Allow-efi-runtime.patch index bf063a066..d2735cfb0 100644 --- a/debian/patches-rt/efi-Allow-efi-runtime.patch +++ b/debian/patches-rt/efi-Allow-efi-runtime.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 26 Jul 2018 15:06:10 +0200 Subject: [PATCH] efi: Allow efi=runtime -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz In case the option "efi=noruntime" is default at built-time, the user could overwrite its sate by `efi=runtime' and allow it again. diff --git a/debian/patches-rt/efi-Disable-runtime-services-on-RT.patch b/debian/patches-rt/efi-Disable-runtime-services-on-RT.patch index 08ceb32ec..42fe1f8fd 100644 --- a/debian/patches-rt/efi-Disable-runtime-services-on-RT.patch +++ b/debian/patches-rt/efi-Disable-runtime-services-on-RT.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 26 Jul 2018 15:03:16 +0200 Subject: [PATCH] efi: Disable runtime services on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Based on meassurements the EFI functions get_variable / get_next_variable take up to 2us which looks okay. diff --git a/debian/patches-rt/epoll-use-get-cpu-light.patch b/debian/patches-rt/epoll-use-get-cpu-light.patch index 75636dbe6..0852a58a8 100644 --- a/debian/patches-rt/epoll-use-get-cpu-light.patch +++ b/debian/patches-rt/epoll-use-get-cpu-light.patch @@ -1,7 +1,7 @@ Subject: fs/epoll: Do not disable preemption on RT From: Thomas Gleixner Date: Fri, 08 Jul 2011 16:35:35 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz ep_call_nested() takes a sleeping lock so we can't disable preemption. The light version is enough since ep_call_nested() doesn't mind beeing diff --git a/debian/patches-rt/fs-aio-simple-simple-work.patch b/debian/patches-rt/fs-aio-simple-simple-work.patch index 48f2cc252..3d5c481c3 100644 --- a/debian/patches-rt/fs-aio-simple-simple-work.patch +++ b/debian/patches-rt/fs-aio-simple-simple-work.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Mon, 16 Feb 2015 18:49:10 +0100 Subject: fs/aio: simple simple work -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz |BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:768 |in_atomic(): 1, irqs_disabled(): 0, pid: 26, name: rcuos/2 diff --git a/debian/patches-rt/fs-dcache-bring-back-explicit-INIT_HLIST_BL_HEAD-in.patch b/debian/patches-rt/fs-dcache-bring-back-explicit-INIT_HLIST_BL_HEAD-in.patch index 84a80beb5..c311dff77 100644 --- a/debian/patches-rt/fs-dcache-bring-back-explicit-INIT_HLIST_BL_HEAD-in.patch +++ b/debian/patches-rt/fs-dcache-bring-back-explicit-INIT_HLIST_BL_HEAD-in.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 13 Sep 2017 12:32:34 +0200 Subject: [PATCH] fs/dcache: bring back explicit INIT_HLIST_BL_HEAD init -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Commit 3d375d78593c ("mm: update callers to use HASH_ZERO flag") removed INIT_HLIST_BL_HEAD and uses the ZERO flag instead for the init. However diff --git a/debian/patches-rt/fs-dcache-disable-preemption-on-i_dir_seq-s-write-si.patch b/debian/patches-rt/fs-dcache-disable-preemption-on-i_dir_seq-s-write-si.patch index 9bf9aba3b..fe1b4d5cc 100644 --- a/debian/patches-rt/fs-dcache-disable-preemption-on-i_dir_seq-s-write-si.patch +++ b/debian/patches-rt/fs-dcache-disable-preemption-on-i_dir_seq-s-write-si.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 20 Oct 2017 11:29:53 +0200 Subject: [PATCH] fs/dcache: disable preemption on i_dir_seq's write side -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz i_dir_seq is an opencoded seqcounter. Based on the code it looks like we could have two writers in parallel despite the fact that the d_lock is diff --git a/debian/patches-rt/fs-dcache-use-cpu-chill-in-trylock-loops.patch b/debian/patches-rt/fs-dcache-use-cpu-chill-in-trylock-loops.patch index 3e7d54dc5..f29c296b8 100644 --- a/debian/patches-rt/fs-dcache-use-cpu-chill-in-trylock-loops.patch +++ b/debian/patches-rt/fs-dcache-use-cpu-chill-in-trylock-loops.patch @@ -1,7 +1,7 @@ Subject: fs: dcache: Use cpu_chill() in trylock loops From: Thomas Gleixner Date: Wed, 07 Mar 2012 21:00:34 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Retry loops on RT might loop forever when the modifying side was preempted. Use cpu_chill() instead of cpu_relax() to let the system diff --git a/debian/patches-rt/fs-dcache-use-swait_queue-instead-of-waitqueue.patch b/debian/patches-rt/fs-dcache-use-swait_queue-instead-of-waitqueue.patch index f66b65a1a..989ee8d18 100644 --- a/debian/patches-rt/fs-dcache-use-swait_queue-instead-of-waitqueue.patch +++ b/debian/patches-rt/fs-dcache-use-swait_queue-instead-of-waitqueue.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 14 Sep 2016 14:35:49 +0200 Subject: [PATCH] fs/dcache: use swait_queue instead of waitqueue -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz __d_lookup_done() invokes wake_up_all() while holding a hlist_bl_lock() which disables preemption. As a workaround convert it to swait. diff --git a/debian/patches-rt/fs-jbd-replace-bh_state-lock.patch b/debian/patches-rt/fs-jbd-replace-bh_state-lock.patch index 18a95180d..5cfe32170 100644 --- a/debian/patches-rt/fs-jbd-replace-bh_state-lock.patch +++ b/debian/patches-rt/fs-jbd-replace-bh_state-lock.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Fri, 18 Mar 2011 10:11:25 +0100 Subject: fs: jbd/jbd2: Make state lock and journal head lock rt safe -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz bit_spin_locks break under RT. diff --git a/debian/patches-rt/fs-nfs-turn-rmdir_sem-into-a-semaphore.patch b/debian/patches-rt/fs-nfs-turn-rmdir_sem-into-a-semaphore.patch index 1fcb99c3c..04a9f4b57 100644 --- a/debian/patches-rt/fs-nfs-turn-rmdir_sem-into-a-semaphore.patch +++ b/debian/patches-rt/fs-nfs-turn-rmdir_sem-into-a-semaphore.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 15 Sep 2016 10:51:27 +0200 Subject: [PATCH] fs/nfs: turn rmdir_sem into a semaphore -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The RW semaphore had a reader side which used the _non_owner version because it most likely took the reader lock in one thread and released it diff --git a/debian/patches-rt/fs-replace-bh_uptodate_lock-for-rt.patch b/debian/patches-rt/fs-replace-bh_uptodate_lock-for-rt.patch index 434c037e7..72e692b20 100644 --- a/debian/patches-rt/fs-replace-bh_uptodate_lock-for-rt.patch +++ b/debian/patches-rt/fs-replace-bh_uptodate_lock-for-rt.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Fri, 18 Mar 2011 09:18:52 +0100 Subject: buffer_head: Replace bh_uptodate_lock for -rt -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Wrap the bit_spin_lock calls into a separate inline and add the RT replacements with a real spinlock. diff --git a/debian/patches-rt/fscache-initialize-cookie-hash-table-raw-spinlocks.patch b/debian/patches-rt/fscache-initialize-cookie-hash-table-raw-spinlocks.patch index 2766a5780..fa569e06a 100644 --- a/debian/patches-rt/fscache-initialize-cookie-hash-table-raw-spinlocks.patch +++ b/debian/patches-rt/fscache-initialize-cookie-hash-table-raw-spinlocks.patch @@ -1,7 +1,7 @@ From: Clark Williams Date: Tue, 3 Jul 2018 13:34:30 -0500 Subject: [PATCH] fscache: initialize cookie hash table raw spinlocks -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The fscache cookie mechanism uses a hash table of hlist_bl_head structures. The PREEMPT_RT patcheset adds a raw spinlock to this structure and so on PREEMPT_RT diff --git a/debian/patches-rt/ftrace-Fix-trace-header-alignment.patch b/debian/patches-rt/ftrace-Fix-trace-header-alignment.patch index 970e93ab5..1549f0f6c 100644 --- a/debian/patches-rt/ftrace-Fix-trace-header-alignment.patch +++ b/debian/patches-rt/ftrace-Fix-trace-header-alignment.patch @@ -1,7 +1,7 @@ From: Mike Galbraith Date: Sun, 16 Oct 2016 05:08:30 +0200 Subject: [PATCH] ftrace: Fix trace header alignment -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Line up helper arrows to the right column. diff --git a/debian/patches-rt/ftrace-migrate-disable-tracing.patch b/debian/patches-rt/ftrace-migrate-disable-tracing.patch index 4262d1c99..cdd499665 100644 --- a/debian/patches-rt/ftrace-migrate-disable-tracing.patch +++ b/debian/patches-rt/ftrace-migrate-disable-tracing.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Sun, 17 Jul 2011 21:56:42 +0200 Subject: trace: Add migrate-disabled counter to tracing output -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Signed-off-by: Thomas Gleixner --- diff --git a/debian/patches-rt/futex-Ensure-lock-unlock-symetry-versus-pi_lock-and-.patch b/debian/patches-rt/futex-Ensure-lock-unlock-symetry-versus-pi_lock-and-.patch index 171a57869..cb96eac29 100644 --- a/debian/patches-rt/futex-Ensure-lock-unlock-symetry-versus-pi_lock-and-.patch +++ b/debian/patches-rt/futex-Ensure-lock-unlock-symetry-versus-pi_lock-and-.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Fri, 1 Mar 2013 11:17:42 +0100 Subject: futex: Ensure lock/unlock symetry versus pi_lock and hash bucket lock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz In exit_pi_state_list() we have the following locking construct: diff --git a/debian/patches-rt/futex-requeue-pi-fix.patch b/debian/patches-rt/futex-requeue-pi-fix.patch index 9449180e5..131e9e995 100644 --- a/debian/patches-rt/futex-requeue-pi-fix.patch +++ b/debian/patches-rt/futex-requeue-pi-fix.patch @@ -1,7 +1,7 @@ From: Steven Rostedt Date: Tue, 14 Jul 2015 14:26:34 +0200 Subject: futex: Fix bug on when a requeued RT task times out -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Requeue with timeout causes a bug with PREEMPT_RT_FULL. diff --git a/debian/patches-rt/futex-workaround-migrate_disable-enable-in-different.patch b/debian/patches-rt/futex-workaround-migrate_disable-enable-in-different.patch index 3122ce705..26174009e 100644 --- a/debian/patches-rt/futex-workaround-migrate_disable-enable-in-different.patch +++ b/debian/patches-rt/futex-workaround-migrate_disable-enable-in-different.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Wed, 8 Mar 2017 14:23:35 +0100 Subject: [PATCH] futex: workaround migrate_disable/enable in different context -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz migrate_disable()/migrate_enable() takes a different path in atomic() vs !atomic() context. These little hacks ensure that we don't underflow / overflow diff --git a/debian/patches-rt/genirq-disable-irqpoll-on-rt.patch b/debian/patches-rt/genirq-disable-irqpoll-on-rt.patch index 3556dc128..02b761cbc 100644 --- a/debian/patches-rt/genirq-disable-irqpoll-on-rt.patch +++ b/debian/patches-rt/genirq-disable-irqpoll-on-rt.patch @@ -1,7 +1,7 @@ From: Ingo Molnar Date: Fri, 3 Jul 2009 08:29:57 -0500 Subject: genirq: Disable irqpoll on -rt -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Creates long latencies for no value diff --git a/debian/patches-rt/genirq-do-not-invoke-the-affinity-callback-via-a-wor.patch b/debian/patches-rt/genirq-do-not-invoke-the-affinity-callback-via-a-wor.patch index e5db60c47..b2ade7b04 100644 --- a/debian/patches-rt/genirq-do-not-invoke-the-affinity-callback-via-a-wor.patch +++ b/debian/patches-rt/genirq-do-not-invoke-the-affinity-callback-via-a-wor.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 21 Aug 2013 17:48:46 +0200 Subject: genirq: Do not invoke the affinity callback via a workqueue on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Joe Korty reported, that __irq_set_affinity_locked() schedules a workqueue while holding a rawlock which results in a might_sleep() diff --git a/debian/patches-rt/genirq-force-threading.patch b/debian/patches-rt/genirq-force-threading.patch index 491f411df..0d5d0f709 100644 --- a/debian/patches-rt/genirq-force-threading.patch +++ b/debian/patches-rt/genirq-force-threading.patch @@ -1,7 +1,7 @@ Subject: genirq: Force interrupt thread on RT From: Thomas Gleixner Date: Sun, 03 Apr 2011 11:57:29 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Force threaded_irqs and optimize the code (force_irqthreads) in regard to this. diff --git a/debian/patches-rt/genirq-update-irq_set_irqchip_state-documentation.patch b/debian/patches-rt/genirq-update-irq_set_irqchip_state-documentation.patch index 9d7454025..7d21a49b2 100644 --- a/debian/patches-rt/genirq-update-irq_set_irqchip_state-documentation.patch +++ b/debian/patches-rt/genirq-update-irq_set_irqchip_state-documentation.patch @@ -1,7 +1,7 @@ From: Josh Cartwright Date: Thu, 11 Feb 2016 11:54:00 -0600 Subject: genirq: update irq_set_irqchip_state documentation -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz On -rt kernels, the use of migrate_disable()/migrate_enable() is sufficient to guarantee a task isn't moved to another CPU. Update the diff --git a/debian/patches-rt/hotplug-duct-tape-RT-rwlock-usage-for-non-RT.patch b/debian/patches-rt/hotplug-duct-tape-RT-rwlock-usage-for-non-RT.patch index cc462bf75..bc76beff4 100644 --- a/debian/patches-rt/hotplug-duct-tape-RT-rwlock-usage-for-non-RT.patch +++ b/debian/patches-rt/hotplug-duct-tape-RT-rwlock-usage-for-non-RT.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 4 Aug 2017 18:31:00 +0200 Subject: [PATCH] hotplug: duct-tape RT-rwlock usage for non-RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz This type is only available on -RT. We need to craft something for non-RT. Since the only migrate_disable() user is -RT only, there is no diff --git a/debian/patches-rt/hotplug-light-get-online-cpus.patch b/debian/patches-rt/hotplug-light-get-online-cpus.patch index 24d039f8c..fd355ad76 100644 --- a/debian/patches-rt/hotplug-light-get-online-cpus.patch +++ b/debian/patches-rt/hotplug-light-get-online-cpus.patch @@ -1,7 +1,7 @@ Subject: hotplug: Lightweight get online cpus From: Thomas Gleixner Date: Wed, 15 Jun 2011 12:36:06 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz get_online_cpus() is a heavy weight function which involves a global mutex. migrate_disable() wants a simpler construct which prevents only diff --git a/debian/patches-rt/hrtimer-Move-schedule_work-call-to-helper-thread.patch b/debian/patches-rt/hrtimer-Move-schedule_work-call-to-helper-thread.patch index f1be624c4..026c57bf1 100644 --- a/debian/patches-rt/hrtimer-Move-schedule_work-call-to-helper-thread.patch +++ b/debian/patches-rt/hrtimer-Move-schedule_work-call-to-helper-thread.patch @@ -1,7 +1,7 @@ From: Yang Shi Date: Mon, 16 Sep 2013 14:09:19 -0700 Subject: hrtimer: Move schedule_work call to helper thread -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz When run ltp leapsec_timer test, the following call trace is caught: diff --git a/debian/patches-rt/hrtimer-by-timers-by-default-into-the-softirq-context.patch b/debian/patches-rt/hrtimer-by-timers-by-default-into-the-softirq-context.patch index 186b2e4b7..17fd5dcd6 100644 --- a/debian/patches-rt/hrtimer-by-timers-by-default-into-the-softirq-context.patch +++ b/debian/patches-rt/hrtimer-by-timers-by-default-into-the-softirq-context.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 3 Jul 2009 08:44:31 -0500 Subject: hrtimer: by timers by default into the softirq context -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz We can't have hrtimers callbacks running in hardirq context on RT. Therefore the timers are deferred to the softirq context by default. @@ -103,7 +103,7 @@ Signed-off-by: Sebastian Andrzej Siewior --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c -@@ -4880,9 +4880,9 @@ void init_cfs_bandwidth(struct cfs_bandw +@@ -4879,9 +4879,9 @@ void init_cfs_bandwidth(struct cfs_bandw cfs_b->period = ns_to_ktime(default_cfs_period()); INIT_LIST_HEAD(&cfs_b->throttled_cfs_rq); diff --git a/debian/patches-rt/hrtimer-consolidate-hrtimer_init-hrtimer_init_sleepe.patch b/debian/patches-rt/hrtimer-consolidate-hrtimer_init-hrtimer_init_sleepe.patch index 7382ce824..de3b01251 100644 --- a/debian/patches-rt/hrtimer-consolidate-hrtimer_init-hrtimer_init_sleepe.patch +++ b/debian/patches-rt/hrtimer-consolidate-hrtimer_init-hrtimer_init_sleepe.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Tue, 3 Jul 2018 11:25:41 +0200 Subject: [PATCH v2] hrtimer: consolidate hrtimer_init() + hrtimer_init_sleeper() calls -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz hrtimer_init_sleeper() calls require a prior initialisation of the hrtimer object with hrtimer_init(). Lets make the initialisation of diff --git a/debian/patches-rt/hrtimer-move-state-change-before-hrtimer_cancel-in-d.patch b/debian/patches-rt/hrtimer-move-state-change-before-hrtimer_cancel-in-d.patch index 46d53d858..f7e15d2c7 100644 --- a/debian/patches-rt/hrtimer-move-state-change-before-hrtimer_cancel-in-d.patch +++ b/debian/patches-rt/hrtimer-move-state-change-before-hrtimer_cancel-in-d.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 6 Dec 2018 10:15:13 +0100 Subject: [PATCH] hrtimer: move state change before hrtimer_cancel in do_nanosleep() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz There is a small window between setting t->task to NULL and waking the task up (which would set TASK_RUNNING). So the timer would fire, run and diff --git a/debian/patches-rt/hrtimers-prepare-full-preemption.patch b/debian/patches-rt/hrtimers-prepare-full-preemption.patch index 150159934..1b55e2fa4 100644 --- a/debian/patches-rt/hrtimers-prepare-full-preemption.patch +++ b/debian/patches-rt/hrtimers-prepare-full-preemption.patch @@ -1,7 +1,7 @@ From: Ingo Molnar Date: Fri, 3 Jul 2009 08:29:34 -0500 Subject: hrtimers: Prepare full preemption -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Make cancellation of a running callback in softirq context safe against preemption. diff --git a/debian/patches-rt/irq-allow-disabling-of-softirq-processing-in-irq-thread-context.patch b/debian/patches-rt/irq-allow-disabling-of-softirq-processing-in-irq-thread-context.patch index a6ca18cc0..a146d9da8 100644 --- a/debian/patches-rt/irq-allow-disabling-of-softirq-processing-in-irq-thread-context.patch +++ b/debian/patches-rt/irq-allow-disabling-of-softirq-processing-in-irq-thread-context.patch @@ -1,7 +1,7 @@ Subject: genirq: Allow disabling of softirq processing in irq thread context From: Thomas Gleixner Date: Tue, 31 Jan 2012 13:01:27 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The processing of softirqs in irq thread context is a performance gain for the non-rt workloads of a system, but it's counterproductive for diff --git a/debian/patches-rt/irqchip-gic-v3-its-Move-pending-table-allocation-to-.patch b/debian/patches-rt/irqchip-gic-v3-its-Move-pending-table-allocation-to-.patch index f6cfec8d2..23b1ae7a3 100644 --- a/debian/patches-rt/irqchip-gic-v3-its-Move-pending-table-allocation-to-.patch +++ b/debian/patches-rt/irqchip-gic-v3-its-Move-pending-table-allocation-to-.patch @@ -2,7 +2,7 @@ From: Marc Zyngier Date: Fri, 27 Jul 2018 13:38:54 +0100 Subject: [PATCH] irqchip/gic-v3-its: Move pending table allocation to init time -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Signed-off-by: Marc Zyngier Signed-off-by: Sebastian Andrzej Siewior diff --git a/debian/patches-rt/irqwork-push_most_work_into_softirq_context.patch b/debian/patches-rt/irqwork-push_most_work_into_softirq_context.patch index c1027e63d..41bbb01e6 100644 --- a/debian/patches-rt/irqwork-push_most_work_into_softirq_context.patch +++ b/debian/patches-rt/irqwork-push_most_work_into_softirq_context.patch @@ -1,7 +1,7 @@ Subject: irqwork: push most work into softirq context From: Sebastian Andrzej Siewior Date: Tue, 23 Jun 2015 15:32:51 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Initially we defered all irqwork into softirq because we didn't want the latency spikes if perf or another user was busy and delayed the RT task. diff --git a/debian/patches-rt/jump-label-rt.patch b/debian/patches-rt/jump-label-rt.patch index 41eae692f..eacdc9bbc 100644 --- a/debian/patches-rt/jump-label-rt.patch +++ b/debian/patches-rt/jump-label-rt.patch @@ -1,7 +1,7 @@ Subject: jump-label: disable if stop_machine() is used From: Thomas Gleixner Date: Wed, 08 Jul 2015 17:14:48 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Some architectures are using stop_machine() while switching the opcode which leads to latency spikes. diff --git a/debian/patches-rt/kconfig-disable-a-few-options-rt.patch b/debian/patches-rt/kconfig-disable-a-few-options-rt.patch index b8aebfe44..db68b39ba 100644 --- a/debian/patches-rt/kconfig-disable-a-few-options-rt.patch +++ b/debian/patches-rt/kconfig-disable-a-few-options-rt.patch @@ -1,7 +1,7 @@ Subject: kconfig: Disable config options which are not RT compatible From: Thomas Gleixner Date: Sun, 24 Jul 2011 12:11:43 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Disable stuff which is known to have issues on RT diff --git a/debian/patches-rt/kconfig-preempt-rt-full.patch b/debian/patches-rt/kconfig-preempt-rt-full.patch index ee4306fc9..bacbc3d4c 100644 --- a/debian/patches-rt/kconfig-preempt-rt-full.patch +++ b/debian/patches-rt/kconfig-preempt-rt-full.patch @@ -1,7 +1,7 @@ Subject: kconfig: Add PREEMPT_RT_FULL From: Thomas Gleixner Date: Wed, 29 Jun 2011 14:58:57 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Introduce the final symbol for PREEMPT_RT_FULL. diff --git a/debian/patches-rt/kernel-printk-Don-t-try-to-print-from-IRQ-NMI-region.patch b/debian/patches-rt/kernel-printk-Don-t-try-to-print-from-IRQ-NMI-region.patch index 394c03b4f..433ecae39 100644 --- a/debian/patches-rt/kernel-printk-Don-t-try-to-print-from-IRQ-NMI-region.patch +++ b/debian/patches-rt/kernel-printk-Don-t-try-to-print-from-IRQ-NMI-region.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 19 May 2016 17:45:27 +0200 Subject: [PATCH] kernel/printk: Don't try to print from IRQ/NMI region -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz On -RT we try to acquire sleeping locks which might lead to warnings from lockdep or a warn_on() from spin_try_lock() (which is a rtmutex on diff --git a/debian/patches-rt/kernel-sched-Provide-a-pointer-to-the-valid-CPU-mask.patch b/debian/patches-rt/kernel-sched-Provide-a-pointer-to-the-valid-CPU-mask.patch index d0b242128..8931a10b2 100644 --- a/debian/patches-rt/kernel-sched-Provide-a-pointer-to-the-valid-CPU-mask.patch +++ b/debian/patches-rt/kernel-sched-Provide-a-pointer-to-the-valid-CPU-mask.patch @@ -4,7 +4,7 @@ Subject: [PATCH] kernel: sched: Provide a pointer to the valid CPU mask MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz In commit 4b53a3412d66 ("sched/core: Remove the tsk_nr_cpus_allowed() wrapper") the tsk_nr_cpus_allowed() wrapper was removed. There was not @@ -536,7 +536,7 @@ Signed-off-by: Sebastian Andrzej Siewior !task_on_rq_queued(task))) { --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c -@@ -1631,7 +1631,7 @@ static void task_numa_compare(struct tas +@@ -1630,7 +1630,7 @@ static void task_numa_compare(struct tas * be incurred if the tasks were swapped. */ /* Skip this swap candidate if cannot move to the source cpu */ @@ -545,7 +545,7 @@ Signed-off-by: Sebastian Andrzej Siewior goto unlock; /* -@@ -1728,7 +1728,7 @@ static void task_numa_find_cpu(struct ta +@@ -1727,7 +1727,7 @@ static void task_numa_find_cpu(struct ta for_each_cpu(cpu, cpumask_of_node(env->dst_nid)) { /* Skip this CPU if the source task cannot migrate */ @@ -554,7 +554,7 @@ Signed-off-by: Sebastian Andrzej Siewior continue; env->dst_cpu = cpu; -@@ -5713,7 +5713,7 @@ find_idlest_group(struct sched_domain *s +@@ -5712,7 +5712,7 @@ find_idlest_group(struct sched_domain *s /* Skip over this group if it has no CPUs allowed */ if (!cpumask_intersects(sched_group_span(group), @@ -563,7 +563,7 @@ Signed-off-by: Sebastian Andrzej Siewior continue; local_group = cpumask_test_cpu(this_cpu, -@@ -5845,7 +5845,7 @@ find_idlest_group_cpu(struct sched_group +@@ -5844,7 +5844,7 @@ find_idlest_group_cpu(struct sched_group return cpumask_first(sched_group_span(group)); /* Traverse only the allowed CPUs */ @@ -572,7 +572,7 @@ Signed-off-by: Sebastian Andrzej Siewior if (available_idle_cpu(i)) { struct rq *rq = cpu_rq(i); struct cpuidle_state *idle = idle_get_state(rq); -@@ -5885,7 +5885,7 @@ static inline int find_idlest_cpu(struct +@@ -5884,7 +5884,7 @@ static inline int find_idlest_cpu(struct { int new_cpu = cpu; @@ -581,7 +581,7 @@ Signed-off-by: Sebastian Andrzej Siewior return prev_cpu; /* -@@ -6001,7 +6001,7 @@ static int select_idle_core(struct task_ +@@ -6000,7 +6000,7 @@ static int select_idle_core(struct task_ if (!test_idle_cores(target, false)) return -1; @@ -590,7 +590,7 @@ Signed-off-by: Sebastian Andrzej Siewior for_each_cpu_wrap(core, cpus, target) { bool idle = true; -@@ -6035,7 +6035,7 @@ static int select_idle_smt(struct task_s +@@ -6034,7 +6034,7 @@ static int select_idle_smt(struct task_s return -1; for_each_cpu(cpu, cpu_smt_mask(target)) { @@ -599,7 +599,7 @@ Signed-off-by: Sebastian Andrzej Siewior continue; if (available_idle_cpu(cpu)) return cpu; -@@ -6098,7 +6098,7 @@ static int select_idle_cpu(struct task_s +@@ -6097,7 +6097,7 @@ static int select_idle_cpu(struct task_s for_each_cpu_wrap(cpu, sched_domain_span(sd), target) { if (!--nr) return -1; @@ -608,7 +608,7 @@ Signed-off-by: Sebastian Andrzej Siewior continue; if (available_idle_cpu(cpu)) break; -@@ -6135,7 +6135,7 @@ static int select_idle_sibling(struct ta +@@ -6134,7 +6134,7 @@ static int select_idle_sibling(struct ta recent_used_cpu != target && cpus_share_cache(recent_used_cpu, target) && available_idle_cpu(recent_used_cpu) && @@ -617,7 +617,7 @@ Signed-off-by: Sebastian Andrzej Siewior /* * Replace recent_used_cpu with prev as it is a potential * candidate for the next wake: -@@ -6353,7 +6353,7 @@ select_task_rq_fair(struct task_struct * +@@ -6352,7 +6352,7 @@ select_task_rq_fair(struct task_struct * if (sd_flag & SD_BALANCE_WAKE) { record_wakee(p); want_affine = !wake_wide(p) && !wake_cap(p, cpu, prev_cpu) @@ -626,7 +626,7 @@ Signed-off-by: Sebastian Andrzej Siewior } rcu_read_lock(); -@@ -7092,14 +7092,14 @@ int can_migrate_task(struct task_struct +@@ -7091,14 +7091,14 @@ int can_migrate_task(struct task_struct /* * We do not migrate tasks that are: * 1) throttled_lb_pair, or @@ -643,7 +643,7 @@ Signed-off-by: Sebastian Andrzej Siewior int cpu; schedstat_inc(p->se.statistics.nr_failed_migrations_affine); -@@ -7119,7 +7119,7 @@ int can_migrate_task(struct task_struct +@@ -7118,7 +7118,7 @@ int can_migrate_task(struct task_struct /* Prevent to re-select dst_cpu via env's CPUs: */ for_each_cpu_and(cpu, env->dst_grpmask, env->cpus) { @@ -652,7 +652,7 @@ Signed-off-by: Sebastian Andrzej Siewior env->flags |= LBF_DST_PINNED; env->new_dst_cpu = cpu; break; -@@ -7740,7 +7740,7 @@ check_cpu_capacity(struct rq *rq, struct +@@ -7715,7 +7715,7 @@ check_cpu_capacity(struct rq *rq, struct /* * Group imbalance indicates (and tries to solve) the problem where balancing @@ -661,7 +661,7 @@ Signed-off-by: Sebastian Andrzej Siewior * * Imagine a situation of two groups of 4 CPUs each and 4 tasks each with a * cpumask covering 1 CPU of the first group and 3 CPUs of the second group. -@@ -8355,7 +8355,7 @@ static struct sched_group *find_busiest_ +@@ -8330,7 +8330,7 @@ static struct sched_group *find_busiest_ /* * If the busiest group is imbalanced the below checks don't * work because they assume all things are equal, which typically @@ -670,7 +670,7 @@ Signed-off-by: Sebastian Andrzej Siewior */ if (busiest->group_type == group_imbalanced) goto force_balance; -@@ -8751,7 +8751,7 @@ static int load_balance(int this_cpu, st +@@ -8726,7 +8726,7 @@ static int load_balance(int this_cpu, st * if the curr task on busiest CPU can't be * moved to this_cpu: */ diff --git a/debian/patches-rt/kernel-sched-move-stack-kprobe-clean-up-to-__put_tas.patch b/debian/patches-rt/kernel-sched-move-stack-kprobe-clean-up-to-__put_tas.patch index e6eeccaaa..f14c86a72 100644 --- a/debian/patches-rt/kernel-sched-move-stack-kprobe-clean-up-to-__put_tas.patch +++ b/debian/patches-rt/kernel-sched-move-stack-kprobe-clean-up-to-__put_tas.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior Date: Mon, 21 Nov 2016 19:31:08 +0100 Subject: [PATCH] kernel/sched: move stack + kprobe clean up to __put_task_struct() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz There is no need to free the stack before the task struct (except for reasons mentioned in commit 68f24b08ee89 ("sched/core: Free the stack early if diff --git a/debian/patches-rt/kgb-serial-hackaround.patch b/debian/patches-rt/kgb-serial-hackaround.patch index 22401967e..9e1804376 100644 --- a/debian/patches-rt/kgb-serial-hackaround.patch +++ b/debian/patches-rt/kgb-serial-hackaround.patch @@ -1,7 +1,7 @@ From: Jason Wessel Date: Thu, 28 Jul 2011 12:42:23 -0500 Subject: kgdb/serial: Short term workaround -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz On 07/27/2011 04:37 PM, Thomas Gleixner wrote: > - KGDB (not yet disabled) is reportedly unusable on -rt right now due diff --git a/debian/patches-rt/kmemleak-Turn-kmemleak_lock-to-raw-spinlock-on-RT.patch b/debian/patches-rt/kmemleak-Turn-kmemleak_lock-to-raw-spinlock-on-RT.patch index c066dd9e6..c149e1458 100644 --- a/debian/patches-rt/kmemleak-Turn-kmemleak_lock-to-raw-spinlock-on-RT.patch +++ b/debian/patches-rt/kmemleak-Turn-kmemleak_lock-to-raw-spinlock-on-RT.patch @@ -1,7 +1,7 @@ From: He Zhe Date: Wed, 19 Dec 2018 16:30:57 +0100 Subject: [PATCH] kmemleak: Turn kmemleak_lock to raw spinlock on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz kmemleak_lock, as a rwlock on RT, can possibly be held in atomic context and causes the follow BUG. diff --git a/debian/patches-rt/kthread-convert-worker-lock-to-raw-spinlock.patch b/debian/patches-rt/kthread-convert-worker-lock-to-raw-spinlock.patch index dc9371272..a3fdd8682 100644 --- a/debian/patches-rt/kthread-convert-worker-lock-to-raw-spinlock.patch +++ b/debian/patches-rt/kthread-convert-worker-lock-to-raw-spinlock.patch @@ -1,7 +1,7 @@ From: Julia Cartwright Date: Fri, 28 Sep 2018 21:03:51 +0000 Subject: [PATCH] kthread: convert worker lock to raw spinlock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz In order to enable the queuing of kthread work items from hardirq context even when PREEMPT_RT_FULL is enabled, convert the worker diff --git a/debian/patches-rt/leds-trigger-disable-CPU-trigger-on-RT.patch b/debian/patches-rt/leds-trigger-disable-CPU-trigger-on-RT.patch index 08dbd103b..28353f83f 100644 --- a/debian/patches-rt/leds-trigger-disable-CPU-trigger-on-RT.patch +++ b/debian/patches-rt/leds-trigger-disable-CPU-trigger-on-RT.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 23 Jan 2014 14:45:59 +0100 Subject: leds: trigger: disable CPU trigger on -RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz as it triggers: |CPU: 0 PID: 0 Comm: swapper Not tainted 3.12.8-rt10 #141 diff --git a/debian/patches-rt/list_bl-fixup-bogus-lockdep-warning.patch b/debian/patches-rt/list_bl-fixup-bogus-lockdep-warning.patch index 1430b8255..b28a0bc36 100644 --- a/debian/patches-rt/list_bl-fixup-bogus-lockdep-warning.patch +++ b/debian/patches-rt/list_bl-fixup-bogus-lockdep-warning.patch @@ -1,7 +1,7 @@ From: Josh Cartwright Date: Thu, 31 Mar 2016 00:04:25 -0500 Subject: [PATCH] list_bl: fixup bogus lockdep warning -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz At first glance, the use of 'static inline' seems appropriate for INIT_HLIST_BL_HEAD(). diff --git a/debian/patches-rt/list_bl.h-make-list-head-locking-RT-safe.patch b/debian/patches-rt/list_bl.h-make-list-head-locking-RT-safe.patch index e8d480ab1..7cd7d1a53 100644 --- a/debian/patches-rt/list_bl.h-make-list-head-locking-RT-safe.patch +++ b/debian/patches-rt/list_bl.h-make-list-head-locking-RT-safe.patch @@ -1,7 +1,7 @@ From: Paul Gortmaker Date: Fri, 21 Jun 2013 15:07:25 -0400 Subject: list_bl: Make list head locking RT safe -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz As per changes in include/linux/jbd_common.h for avoiding the bit_spin_locks on RT ("fs: jbd/jbd2: Make state lock and journal diff --git a/debian/patches-rt/locallock-provide-get-put-_locked_ptr-variants.patch b/debian/patches-rt/locallock-provide-get-put-_locked_ptr-variants.patch index bc1405e4e..ffd6ace1b 100644 --- a/debian/patches-rt/locallock-provide-get-put-_locked_ptr-variants.patch +++ b/debian/patches-rt/locallock-provide-get-put-_locked_ptr-variants.patch @@ -1,7 +1,7 @@ From: Julia Cartwright Date: Mon, 7 May 2018 08:58:56 -0500 Subject: [PATCH] locallock: provide {get,put}_locked_ptr() variants -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Provide a set of locallocked accessors for pointers to per-CPU data; this is useful for dynamically-allocated per-CPU regions, for example. diff --git a/debian/patches-rt/localversion.patch b/debian/patches-rt/localversion.patch index d93f9478a..90d68690c 100644 --- a/debian/patches-rt/localversion.patch +++ b/debian/patches-rt/localversion.patch @@ -1,7 +1,7 @@ Subject: Add localversion for -RT release From: Thomas Gleixner Date: Fri, 08 Jul 2011 20:25:16 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Signed-off-by: Thomas Gleixner --- @@ -11,4 +11,4 @@ Signed-off-by: Thomas Gleixner --- /dev/null +++ b/localversion-rt @@ -0,0 +1 @@ -+-rt10 ++-rt12 diff --git a/debian/patches-rt/lockdep-disable-self-test.patch b/debian/patches-rt/lockdep-disable-self-test.patch index f47cd4935..5b38a6562 100644 --- a/debian/patches-rt/lockdep-disable-self-test.patch +++ b/debian/patches-rt/lockdep-disable-self-test.patch @@ -4,7 +4,7 @@ Subject: [PATCH] lockdep: disable self-test MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The self-test wasn't always 100% accurate for RT. We disabled a few tests which failed because they had a different semantic for RT. Some diff --git a/debian/patches-rt/lockdep-no-softirq-accounting-on-rt.patch b/debian/patches-rt/lockdep-no-softirq-accounting-on-rt.patch index 8fe0ce4cb..708467c66 100644 --- a/debian/patches-rt/lockdep-no-softirq-accounting-on-rt.patch +++ b/debian/patches-rt/lockdep-no-softirq-accounting-on-rt.patch @@ -1,7 +1,7 @@ Subject: lockdep: Make it RT aware From: Thomas Gleixner Date: Sun, 17 Jul 2011 18:51:23 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz teach lockdep that we don't really do softirqs on -RT. diff --git a/debian/patches-rt/lockdep-selftest-fix-warnings-due-to-missing-PREEMPT.patch b/debian/patches-rt/lockdep-selftest-fix-warnings-due-to-missing-PREEMPT.patch index 135dd9645..301442858 100644 --- a/debian/patches-rt/lockdep-selftest-fix-warnings-due-to-missing-PREEMPT.patch +++ b/debian/patches-rt/lockdep-selftest-fix-warnings-due-to-missing-PREEMPT.patch @@ -1,7 +1,7 @@ From: Josh Cartwright Date: Wed, 28 Jan 2015 13:08:45 -0600 Subject: lockdep: selftest: fix warnings due to missing PREEMPT_RT conditionals -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz "lockdep: Selftest: Only do hardirq context test for raw spinlock" disabled the execution of certain tests with PREEMPT_RT_FULL, but did diff --git a/debian/patches-rt/lockdep-selftest-only-do-hardirq-context-test-for-raw-spinlock.patch b/debian/patches-rt/lockdep-selftest-only-do-hardirq-context-test-for-raw-spinlock.patch index 1ead259a5..3e8b98fb7 100644 --- a/debian/patches-rt/lockdep-selftest-only-do-hardirq-context-test-for-raw-spinlock.patch +++ b/debian/patches-rt/lockdep-selftest-only-do-hardirq-context-test-for-raw-spinlock.patch @@ -1,7 +1,7 @@ Subject: lockdep: selftest: Only do hardirq context test for raw spinlock From: Yong Zhang Date: Mon, 16 Apr 2012 15:01:56 +0800 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz From: Yong Zhang diff --git a/debian/patches-rt/locking-don-t-check-for-__LINUX_SPINLOCK_TYPES_H-on-.patch b/debian/patches-rt/locking-don-t-check-for-__LINUX_SPINLOCK_TYPES_H-on-.patch index 28c91cdbe..fe439f1b0 100644 --- a/debian/patches-rt/locking-don-t-check-for-__LINUX_SPINLOCK_TYPES_H-on-.patch +++ b/debian/patches-rt/locking-don-t-check-for-__LINUX_SPINLOCK_TYPES_H-on-.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 4 Aug 2017 17:40:42 +0200 Subject: [PATCH 1/2] locking: don't check for __LINUX_SPINLOCK_TYPES_H on -RT archs -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Upstream uses arch_spinlock_t within spinlock_t and requests that spinlock_types.h header file is included first. diff --git a/debian/patches-rt/locking-locktorture-Do-NOT-include-rwlock.h-directly.patch b/debian/patches-rt/locking-locktorture-Do-NOT-include-rwlock.h-directly.patch index 4ea067871..7d227c43f 100644 --- a/debian/patches-rt/locking-locktorture-Do-NOT-include-rwlock.h-directly.patch +++ b/debian/patches-rt/locking-locktorture-Do-NOT-include-rwlock.h-directly.patch @@ -1,7 +1,7 @@ From: "Wolfgang M. Reimer" Date: Tue, 21 Jul 2015 16:20:07 +0200 Subject: locking: locktorture: Do NOT include rwlock.h directly -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Including rwlock.h directly will cause kernel builds to fail if CONFIG_PREEMPT_RT_FULL is defined. The correct header file diff --git a/debian/patches-rt/locking-rt-mutex-Flush-block-plug-on-__down_read.patch b/debian/patches-rt/locking-rt-mutex-Flush-block-plug-on-__down_read.patch index b6d738c01..b7f44b044 100644 --- a/debian/patches-rt/locking-rt-mutex-Flush-block-plug-on-__down_read.patch +++ b/debian/patches-rt/locking-rt-mutex-Flush-block-plug-on-__down_read.patch @@ -1,7 +1,7 @@ From: Scott Wood Date: Fri, 4 Jan 2019 15:33:21 -0500 Subject: [PATCH] locking/rt-mutex: Flush block plug on __down_read() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz __down_read() bypasses the rtmutex frontend to call rt_mutex_slowlock_locked() directly, and thus it needs to call diff --git a/debian/patches-rt/locking-rt-mutex-fix-deadlock-in-device-mapper-block.patch b/debian/patches-rt/locking-rt-mutex-fix-deadlock-in-device-mapper-block.patch index 474cc941c..99c56fce6 100644 --- a/debian/patches-rt/locking-rt-mutex-fix-deadlock-in-device-mapper-block.patch +++ b/debian/patches-rt/locking-rt-mutex-fix-deadlock-in-device-mapper-block.patch @@ -1,7 +1,7 @@ From: Mikulas Patocka Date: Mon, 13 Nov 2017 12:56:53 -0500 Subject: [PATCH] locking/rt-mutex: fix deadlock in device mapper / block-IO -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz When some block device driver creates a bio and submits it to another block device driver, the bio is added to current->bio_list (in order to diff --git a/debian/patches-rt/locking-rtmutex-re-init-the-wait_lock-in-rt_mutex_in.patch b/debian/patches-rt/locking-rtmutex-re-init-the-wait_lock-in-rt_mutex_in.patch index 0c6030fd7..0fb54b8cd 100644 --- a/debian/patches-rt/locking-rtmutex-re-init-the-wait_lock-in-rt_mutex_in.patch +++ b/debian/patches-rt/locking-rtmutex-re-init-the-wait_lock-in-rt_mutex_in.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 16 Nov 2017 16:48:48 +0100 Subject: [PATCH] locking/rtmutex: re-init the wait_lock in rt_mutex_init_proxy_locked() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz We could provide a key-class for the lockdep (and fixup all callers) or move the init to all callers (like it was) in order to avoid lockdep diff --git a/debian/patches-rt/md-disable-bcache.patch b/debian/patches-rt/md-disable-bcache.patch index a4da973cb..aaa4a90cb 100644 --- a/debian/patches-rt/md-disable-bcache.patch +++ b/debian/patches-rt/md-disable-bcache.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 29 Aug 2013 11:48:57 +0200 Subject: md: disable bcache -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz It uses anon semaphores |drivers/md/bcache/request.c: In function ‘cached_dev_write_complete’: diff --git a/debian/patches-rt/md-raid5-percpu-handling-rt-aware.patch b/debian/patches-rt/md-raid5-percpu-handling-rt-aware.patch index be4d72a7c..61c16d145 100644 --- a/debian/patches-rt/md-raid5-percpu-handling-rt-aware.patch +++ b/debian/patches-rt/md-raid5-percpu-handling-rt-aware.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Tue, 6 Apr 2010 16:51:31 +0200 Subject: md: raid5: Make raid5_percpu handling RT aware -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz __raid_run_ops() disables preemption with get_cpu() around the access to the raid5_percpu variables. That causes scheduling while atomic diff --git a/debian/patches-rt/mips-disable-highmem-on-rt.patch b/debian/patches-rt/mips-disable-highmem-on-rt.patch index ec7f06435..e27a24077 100644 --- a/debian/patches-rt/mips-disable-highmem-on-rt.patch +++ b/debian/patches-rt/mips-disable-highmem-on-rt.patch @@ -1,7 +1,7 @@ Subject: mips: Disable highmem on RT From: Thomas Gleixner Date: Mon, 18 Jul 2011 17:10:12 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The current highmem handling on -RT is not compatible and needs fixups. diff --git a/debian/patches-rt/mm-convert-swap-to-percpu-locked.patch b/debian/patches-rt/mm-convert-swap-to-percpu-locked.patch index 88c64d1f3..3202de666 100644 --- a/debian/patches-rt/mm-convert-swap-to-percpu-locked.patch +++ b/debian/patches-rt/mm-convert-swap-to-percpu-locked.patch @@ -1,7 +1,7 @@ From: Ingo Molnar Date: Fri, 3 Jul 2009 08:29:51 -0500 Subject: mm/swap: Convert to percpu locked -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Replace global locks (get_cpu + local_irq_save) with "local_locks()". Currently there is one of for "rotate" and one for "swap". diff --git a/debian/patches-rt/mm-disable-sloub-rt.patch b/debian/patches-rt/mm-disable-sloub-rt.patch index ef8532560..095d3a92a 100644 --- a/debian/patches-rt/mm-disable-sloub-rt.patch +++ b/debian/patches-rt/mm-disable-sloub-rt.patch @@ -1,7 +1,7 @@ From: Ingo Molnar Date: Fri, 3 Jul 2009 08:44:03 -0500 Subject: mm: Allow only slub on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Disable SLAB and SLOB on -RT. Only SLUB is adopted to -RT needs. diff --git a/debian/patches-rt/mm-enable-slub.patch b/debian/patches-rt/mm-enable-slub.patch index 1fe7deaca..8e9b2ab46 100644 --- a/debian/patches-rt/mm-enable-slub.patch +++ b/debian/patches-rt/mm-enable-slub.patch @@ -1,7 +1,7 @@ Subject: mm: Enable SLUB for RT From: Thomas Gleixner Date: Thu, 25 Oct 2012 10:32:35 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Avoid the memory allocation in IRQ section diff --git a/debian/patches-rt/mm-kasan-make-quarantine_lock-a-raw_spinlock_t.patch b/debian/patches-rt/mm-kasan-make-quarantine_lock-a-raw_spinlock_t.patch index e39babc95..d4b6fc03c 100644 --- a/debian/patches-rt/mm-kasan-make-quarantine_lock-a-raw_spinlock_t.patch +++ b/debian/patches-rt/mm-kasan-make-quarantine_lock-a-raw_spinlock_t.patch @@ -1,7 +1,7 @@ From: Clark Williams Date: Tue, 18 Sep 2018 10:29:31 -0500 Subject: [PATCH] mm/kasan: make quarantine_lock a raw_spinlock_t -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The static lock quarantine_lock is used in quarantine.c to protect the quarantine queue datastructures. It is taken inside quarantine queue diff --git a/debian/patches-rt/mm-make-vmstat-rt-aware.patch b/debian/patches-rt/mm-make-vmstat-rt-aware.patch index 06a3cd26e..86848a282 100644 --- a/debian/patches-rt/mm-make-vmstat-rt-aware.patch +++ b/debian/patches-rt/mm-make-vmstat-rt-aware.patch @@ -1,7 +1,7 @@ From: Ingo Molnar Date: Fri, 3 Jul 2009 08:30:13 -0500 Subject: mm/vmstat: Protect per cpu variables with preempt disable on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Disable preemption on -RT for the vmstat code. On vanila the code runs in IRQ-off regions while on -RT it is not. "preempt_disable" ensures that the diff --git a/debian/patches-rt/mm-memcontrol-Don-t-call-schedule_work_on-in-preempt.patch b/debian/patches-rt/mm-memcontrol-Don-t-call-schedule_work_on-in-preempt.patch index de3cfb769..638b6cb4b 100644 --- a/debian/patches-rt/mm-memcontrol-Don-t-call-schedule_work_on-in-preempt.patch +++ b/debian/patches-rt/mm-memcontrol-Don-t-call-schedule_work_on-in-preempt.patch @@ -1,7 +1,7 @@ From: Yang Shi Subject: mm/memcontrol: Don't call schedule_work_on in preemption disabled context Date: Wed, 30 Oct 2013 11:48:33 -0700 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The following trace is triggered when running ltp oom test cases: @@ -49,7 +49,7 @@ Signed-off-by: Sebastian Andrzej Siewior --- a/mm/memcontrol.c +++ b/mm/memcontrol.c -@@ -2036,7 +2036,7 @@ static void drain_all_stock(struct mem_c +@@ -2052,7 +2052,7 @@ static void drain_all_stock(struct mem_c * as well as workers from this path always operate on the local * per-cpu data. CPU up doesn't touch memcg_stock at all. */ @@ -58,7 +58,7 @@ Signed-off-by: Sebastian Andrzej Siewior for_each_online_cpu(cpu) { struct memcg_stock_pcp *stock = &per_cpu(memcg_stock, cpu); struct mem_cgroup *memcg; -@@ -2056,7 +2056,7 @@ static void drain_all_stock(struct mem_c +@@ -2072,7 +2072,7 @@ static void drain_all_stock(struct mem_c } css_put(&memcg->css); } diff --git a/debian/patches-rt/mm-memcontrol-do_not_disable_irq.patch b/debian/patches-rt/mm-memcontrol-do_not_disable_irq.patch index 9e965f0ae..636f02f74 100644 --- a/debian/patches-rt/mm-memcontrol-do_not_disable_irq.patch +++ b/debian/patches-rt/mm-memcontrol-do_not_disable_irq.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Subject: mm/memcontrol: Replace local_irq_disable with local locks Date: Wed, 28 Jan 2015 17:14:16 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz There are a few local_irq_disable() which then take sleeping locks. This patch converts them local locks. @@ -30,7 +30,7 @@ Signed-off-by: Sebastian Andrzej Siewior /* Whether legacy memory+swap accounting is active */ static bool do_memsw_account(void) { -@@ -4843,12 +4846,12 @@ static int mem_cgroup_move_account(struc +@@ -4859,12 +4862,12 @@ static int mem_cgroup_move_account(struc ret = 0; @@ -45,7 +45,7 @@ Signed-off-by: Sebastian Andrzej Siewior out_unlock: unlock_page(page); out: -@@ -5967,10 +5970,10 @@ void mem_cgroup_commit_charge(struct pag +@@ -5983,10 +5986,10 @@ void mem_cgroup_commit_charge(struct pag commit_charge(page, memcg, lrucare); @@ -58,7 +58,7 @@ Signed-off-by: Sebastian Andrzej Siewior if (do_memsw_account() && PageSwapCache(page)) { swp_entry_t entry = { .val = page_private(page) }; -@@ -6039,7 +6042,7 @@ static void uncharge_batch(const struct +@@ -6055,7 +6058,7 @@ static void uncharge_batch(const struct memcg_oom_recover(ug->memcg); } @@ -67,7 +67,7 @@ Signed-off-by: Sebastian Andrzej Siewior __mod_memcg_state(ug->memcg, MEMCG_RSS, -ug->nr_anon); __mod_memcg_state(ug->memcg, MEMCG_CACHE, -ug->nr_file); __mod_memcg_state(ug->memcg, MEMCG_RSS_HUGE, -ug->nr_huge); -@@ -6047,7 +6050,7 @@ static void uncharge_batch(const struct +@@ -6063,7 +6066,7 @@ static void uncharge_batch(const struct __count_memcg_events(ug->memcg, PGPGOUT, ug->pgpgout); __this_cpu_add(ug->memcg->stat_cpu->nr_page_events, nr_pages); memcg_check_events(ug->memcg, ug->dummy_page); @@ -76,7 +76,7 @@ Signed-off-by: Sebastian Andrzej Siewior if (!mem_cgroup_is_root(ug->memcg)) css_put_many(&ug->memcg->css, nr_pages); -@@ -6210,10 +6213,10 @@ void mem_cgroup_migrate(struct page *old +@@ -6226,10 +6229,10 @@ void mem_cgroup_migrate(struct page *old commit_charge(newpage, memcg, false); @@ -89,7 +89,7 @@ Signed-off-by: Sebastian Andrzej Siewior } DEFINE_STATIC_KEY_FALSE(memcg_sockets_enabled_key); -@@ -6405,6 +6408,7 @@ void mem_cgroup_swapout(struct page *pag +@@ -6421,6 +6424,7 @@ void mem_cgroup_swapout(struct page *pag struct mem_cgroup *memcg, *swap_memcg; unsigned int nr_entries; unsigned short oldid; @@ -97,7 +97,7 @@ Signed-off-by: Sebastian Andrzej Siewior VM_BUG_ON_PAGE(PageLRU(page), page); VM_BUG_ON_PAGE(page_count(page), page); -@@ -6450,13 +6454,17 @@ void mem_cgroup_swapout(struct page *pag +@@ -6466,13 +6470,17 @@ void mem_cgroup_swapout(struct page *pag * important here to have the interrupts disabled because it is the * only synchronisation we have for updating the per-CPU variables. */ diff --git a/debian/patches-rt/mm-page_alloc-rt-friendly-per-cpu-pages.patch b/debian/patches-rt/mm-page_alloc-rt-friendly-per-cpu-pages.patch index f4bc67a09..938f605dd 100644 --- a/debian/patches-rt/mm-page_alloc-rt-friendly-per-cpu-pages.patch +++ b/debian/patches-rt/mm-page_alloc-rt-friendly-per-cpu-pages.patch @@ -1,7 +1,7 @@ From: Ingo Molnar Date: Fri, 3 Jul 2009 08:29:37 -0500 Subject: mm: page_alloc: rt-friendly per-cpu pages -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz rt-friendly per-cpu pages: convert the irqs-off per-cpu locking method into a preemptible, explicit-per-cpu-locks method. diff --git a/debian/patches-rt/mm-perform-lru_add_drain_all-remotely.patch b/debian/patches-rt/mm-perform-lru_add_drain_all-remotely.patch index 34b362962..23f9e5b51 100644 --- a/debian/patches-rt/mm-perform-lru_add_drain_all-remotely.patch +++ b/debian/patches-rt/mm-perform-lru_add_drain_all-remotely.patch @@ -1,7 +1,7 @@ From: Luiz Capitulino Date: Fri, 27 May 2016 15:03:28 +0200 Subject: [PATCH] mm: perform lru_add_drain_all() remotely -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz lru_add_drain_all() works by scheduling lru_add_drain_cpu() to run on all CPUs that have non-empty LRU pagevecs and then waiting for diff --git a/debian/patches-rt/mm-protect-activate-switch-mm.patch b/debian/patches-rt/mm-protect-activate-switch-mm.patch index 1064c88dd..df0bbfa6b 100644 --- a/debian/patches-rt/mm-protect-activate-switch-mm.patch +++ b/debian/patches-rt/mm-protect-activate-switch-mm.patch @@ -1,7 +1,7 @@ From: Yong Zhang Date: Tue, 15 May 2012 13:53:56 +0800 Subject: mm: Protect activate_mm() by preempt_[disable&enable]_rt() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz User preempt_*_rt instead of local_irq_*_rt or otherwise there will be warning on ARM like below: diff --git a/debian/patches-rt/mm-rt-kmap-atomic-scheduling.patch b/debian/patches-rt/mm-rt-kmap-atomic-scheduling.patch index 90ab77f0f..f0ebb528b 100644 --- a/debian/patches-rt/mm-rt-kmap-atomic-scheduling.patch +++ b/debian/patches-rt/mm-rt-kmap-atomic-scheduling.patch @@ -1,7 +1,7 @@ Subject: mm, rt: kmap_atomic scheduling From: Peter Zijlstra Date: Thu, 28 Jul 2011 10:43:51 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz In fact, with migrate_disable() existing one could play games with kmap_atomic. You could save/restore the kmap_atomic slots on context diff --git a/debian/patches-rt/mm-scatterlist-dont-disable-irqs-on-RT.patch b/debian/patches-rt/mm-scatterlist-dont-disable-irqs-on-RT.patch index dedcb48e7..ec3ebbaf4 100644 --- a/debian/patches-rt/mm-scatterlist-dont-disable-irqs-on-RT.patch +++ b/debian/patches-rt/mm-scatterlist-dont-disable-irqs-on-RT.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Fri, 3 Jul 2009 08:44:34 -0500 Subject: mm/scatterlist: Do not disable irqs on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz For -RT it is enough to keep pagefault disabled (which is currently handled by kmap_atomic()). diff --git a/debian/patches-rt/mm-vmalloc-use-get-cpu-light.patch b/debian/patches-rt/mm-vmalloc-use-get-cpu-light.patch index e6fa4116d..1d78c7ff5 100644 --- a/debian/patches-rt/mm-vmalloc-use-get-cpu-light.patch +++ b/debian/patches-rt/mm-vmalloc-use-get-cpu-light.patch @@ -1,7 +1,7 @@ Subject: mm/vmalloc: Another preempt disable region which sucks From: Thomas Gleixner Date: Tue, 12 Jul 2011 11:39:36 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Avoid the preempt disable version of get_cpu_var(). The inner-lock should provide enough serialisation. diff --git a/debian/patches-rt/mm_zsmalloc_copy_with_get_cpu_var_and_locking.patch b/debian/patches-rt/mm_zsmalloc_copy_with_get_cpu_var_and_locking.patch index f733a86f2..0a3b40960 100644 --- a/debian/patches-rt/mm_zsmalloc_copy_with_get_cpu_var_and_locking.patch +++ b/debian/patches-rt/mm_zsmalloc_copy_with_get_cpu_var_and_locking.patch @@ -1,7 +1,7 @@ From: Mike Galbraith Date: Tue, 22 Mar 2016 11:16:09 +0100 Subject: [PATCH] mm/zsmalloc: copy with get_cpu_var() and locking -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz get_cpu_var() disables preemption and triggers a might_sleep() splat later. This is replaced with get_locked_var(). diff --git a/debian/patches-rt/mutex-no-spin-on-rt.patch b/debian/patches-rt/mutex-no-spin-on-rt.patch index 7e3049e82..bcc13b6fe 100644 --- a/debian/patches-rt/mutex-no-spin-on-rt.patch +++ b/debian/patches-rt/mutex-no-spin-on-rt.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Sun, 17 Jul 2011 21:51:45 +0200 Subject: locking: Disable spin on owner for RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Drop spin on owner for mutex / rwsem. We are most likely not using it but… diff --git a/debian/patches-rt/net-Have-__napi_schedule_irqoff-disable-interrupts-o.patch b/debian/patches-rt/net-Have-__napi_schedule_irqoff-disable-interrupts-o.patch index 2611c97f2..4c45b277a 100644 --- a/debian/patches-rt/net-Have-__napi_schedule_irqoff-disable-interrupts-o.patch +++ b/debian/patches-rt/net-Have-__napi_schedule_irqoff-disable-interrupts-o.patch @@ -2,7 +2,7 @@ From: Steven Rostedt Date: Tue, 6 Dec 2016 17:50:30 -0500 Subject: [PATCH] net: Have __napi_schedule_irqoff() disable interrupts on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz A customer hit a crash where the napi sd->poll_list became corrupted. The customer had the bnx2x driver, which does a diff --git a/debian/patches-rt/net-Qdisc-use-a-seqlock-instead-seqcount.patch b/debian/patches-rt/net-Qdisc-use-a-seqlock-instead-seqcount.patch index f98875d8b..766c397b4 100644 --- a/debian/patches-rt/net-Qdisc-use-a-seqlock-instead-seqcount.patch +++ b/debian/patches-rt/net-Qdisc-use-a-seqlock-instead-seqcount.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 14 Sep 2016 17:36:35 +0200 Subject: [PATCH] net/Qdisc: use a seqlock instead seqcount -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The seqcount disables preemption on -RT while it is held which can't remove. Also we don't want the reader to spin for ages if the writer is diff --git a/debian/patches-rt/net-add-a-lock-around-icmp_sk.patch b/debian/patches-rt/net-add-a-lock-around-icmp_sk.patch index eb4b86006..e1ee6372f 100644 --- a/debian/patches-rt/net-add-a-lock-around-icmp_sk.patch +++ b/debian/patches-rt/net-add-a-lock-around-icmp_sk.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 31 Aug 2016 17:54:09 +0200 Subject: [PATCH] net: add a lock around icmp_sk() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz It looks like the this_cpu_ptr() access in icmp_sk() is protected with local_bh_disable(). To avoid missing serialization in -RT I am adding diff --git a/debian/patches-rt/net-add-back-the-missing-serialization-in-ip_send_un.patch b/debian/patches-rt/net-add-back-the-missing-serialization-in-ip_send_un.patch index f5cc920de..85ccb50ed 100644 --- a/debian/patches-rt/net-add-back-the-missing-serialization-in-ip_send_un.patch +++ b/debian/patches-rt/net-add-back-the-missing-serialization-in-ip_send_un.patch @@ -5,7 +5,7 @@ Subject: [PATCH] net: add back the missing serialization in MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Some time ago Sami Pietikäinen reported a crash on -RT in ip_send_unicast_reply() which was later fixed by Nicholas Mc Guire diff --git a/debian/patches-rt/net-another-local-irq-disable-alloc-atomic-headache.patch b/debian/patches-rt/net-another-local-irq-disable-alloc-atomic-headache.patch index 36c94912d..e6f99b5f9 100644 --- a/debian/patches-rt/net-another-local-irq-disable-alloc-atomic-headache.patch +++ b/debian/patches-rt/net-another-local-irq-disable-alloc-atomic-headache.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Wed, 26 Sep 2012 16:21:08 +0200 Subject: net: Another local_irq_disable/kmalloc headache -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Replace it by a local lock. Though that's pretty inefficient :( diff --git a/debian/patches-rt/net-core-protect-users-of-napi_alloc_cache-against-r.patch b/debian/patches-rt/net-core-protect-users-of-napi_alloc_cache-against-r.patch index 47e1311e9..617d660f6 100644 --- a/debian/patches-rt/net-core-protect-users-of-napi_alloc_cache-against-r.patch +++ b/debian/patches-rt/net-core-protect-users-of-napi_alloc_cache-against-r.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 15 Jan 2016 16:33:34 +0100 Subject: net/core: protect users of napi_alloc_cache against reentrance -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz On -RT the code running in BH can not be moved to another CPU so CPU local variable remain local. However the code can be preempted diff --git a/debian/patches-rt/net-core-use-local_bh_disable-in-netif_rx_ni.patch b/debian/patches-rt/net-core-use-local_bh_disable-in-netif_rx_ni.patch index 15acba75e..cda0ecc23 100644 --- a/debian/patches-rt/net-core-use-local_bh_disable-in-netif_rx_ni.patch +++ b/debian/patches-rt/net-core-use-local_bh_disable-in-netif_rx_ni.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 16 Jun 2017 19:03:16 +0200 Subject: [PATCH] net/core: use local_bh_disable() in netif_rx_ni() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz In 2004 netif_rx_ni() gained a preempt_disable() section around netif_rx() and its do_softirq() + testing for it. The do_softirq() part diff --git a/debian/patches-rt/net-dev-always-take-qdisc-s-busylock-in-__dev_xmit_s.patch b/debian/patches-rt/net-dev-always-take-qdisc-s-busylock-in-__dev_xmit_s.patch index e9e7e93c0..bec74fb3a 100644 --- a/debian/patches-rt/net-dev-always-take-qdisc-s-busylock-in-__dev_xmit_s.patch +++ b/debian/patches-rt/net-dev-always-take-qdisc-s-busylock-in-__dev_xmit_s.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 30 Mar 2016 13:36:29 +0200 Subject: [PATCH] net: dev: always take qdisc's busylock in __dev_xmit_skb() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The root-lock is dropped before dev_hard_start_xmit() is invoked and after setting the __QDISC___STATE_RUNNING bit. If this task is now pushed away diff --git a/debian/patches-rt/net-fix-iptable-xt-write-recseq-begin-rt-fallout.patch b/debian/patches-rt/net-fix-iptable-xt-write-recseq-begin-rt-fallout.patch index 7bf773c1c..581b0b3c8 100644 --- a/debian/patches-rt/net-fix-iptable-xt-write-recseq-begin-rt-fallout.patch +++ b/debian/patches-rt/net-fix-iptable-xt-write-recseq-begin-rt-fallout.patch @@ -1,7 +1,7 @@ Subject: net: netfilter: Serialize xt_write_recseq sections on RT From: Thomas Gleixner Date: Sun, 28 Oct 2012 11:18:08 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The netfilter code relies only on the implicit semantics of local_bh_disable() for serializing wt_write_recseq sections. RT breaks diff --git a/debian/patches-rt/net-make-devnet_rename_seq-a-mutex.patch b/debian/patches-rt/net-make-devnet_rename_seq-a-mutex.patch index 7ef221461..364fdc290 100644 --- a/debian/patches-rt/net-make-devnet_rename_seq-a-mutex.patch +++ b/debian/patches-rt/net-make-devnet_rename_seq-a-mutex.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 20 Mar 2013 18:06:20 +0100 Subject: net: Add a mutex around devnet_rename_seq -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz On RT write_seqcount_begin() disables preemption and device_rename() allocates memory with GFP_KERNEL and grabs later the sysfs_mutex diff --git a/debian/patches-rt/net-move-xmit_recursion-to-per-task-variable-on-RT.patch b/debian/patches-rt/net-move-xmit_recursion-to-per-task-variable-on-RT.patch index cef07d10a..ad15bbb6a 100644 --- a/debian/patches-rt/net-move-xmit_recursion-to-per-task-variable-on-RT.patch +++ b/debian/patches-rt/net-move-xmit_recursion-to-per-task-variable-on-RT.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 13 Jan 2016 15:55:02 +0100 Subject: net: move xmit_recursion to per-task variable on -RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz A softirq on -RT can be preempted. That means one task is in __dev_queue_xmit(), gets preempted and another task may enter diff --git a/debian/patches-rt/net-provide-a-way-to-delegate-processing-a-softirq-t.patch b/debian/patches-rt/net-provide-a-way-to-delegate-processing-a-softirq-t.patch index 238283bc7..a042b7642 100644 --- a/debian/patches-rt/net-provide-a-way-to-delegate-processing-a-softirq-t.patch +++ b/debian/patches-rt/net-provide-a-way-to-delegate-processing-a-softirq-t.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 20 Jan 2016 15:39:05 +0100 Subject: net: provide a way to delegate processing a softirq to ksoftirqd -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz If the NET_RX uses up all of his budget it moves the following NAPI invocations into the `ksoftirqd`. On -RT it does not do so. Instead it diff --git a/debian/patches-rt/net-sched-dev_deactivate_many-use-msleep-1-instead-o.patch b/debian/patches-rt/net-sched-dev_deactivate_many-use-msleep-1-instead-o.patch index a3d277701..a43541482 100644 --- a/debian/patches-rt/net-sched-dev_deactivate_many-use-msleep-1-instead-o.patch +++ b/debian/patches-rt/net-sched-dev_deactivate_many-use-msleep-1-instead-o.patch @@ -1,7 +1,7 @@ From: Marc Kleine-Budde Date: Wed, 5 Mar 2014 00:49:47 +0100 Subject: net: sched: Use msleep() instead of yield() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz On PREEMPT_RT enabled systems the interrupt handler run as threads at prio 50 (by default). If a high priority userspace process tries to shut down a busy diff --git a/debian/patches-rt/net-use-cpu-chill.patch b/debian/patches-rt/net-use-cpu-chill.patch index 3dcfe75de..476a37623 100644 --- a/debian/patches-rt/net-use-cpu-chill.patch +++ b/debian/patches-rt/net-use-cpu-chill.patch @@ -1,7 +1,7 @@ Subject: net: Use cpu_chill() instead of cpu_relax() From: Thomas Gleixner Date: Wed, 07 Mar 2012 21:10:04 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Retry loops on RT might loop forever when the modifying side was preempted. Use cpu_chill() instead of cpu_relax() to let the system diff --git a/debian/patches-rt/net_disable_NET_RX_BUSY_POLL.patch b/debian/patches-rt/net_disable_NET_RX_BUSY_POLL.patch index 2eee7de40..a38097608 100644 --- a/debian/patches-rt/net_disable_NET_RX_BUSY_POLL.patch +++ b/debian/patches-rt/net_disable_NET_RX_BUSY_POLL.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Sat, 27 May 2017 19:02:06 +0200 Subject: net/core: disable NET_RX_BUSY_POLL -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz sk_busy_loop() does preempt_disable() followed by a few operations which can take sleeping locks and may get long. diff --git a/debian/patches-rt/of-allocate-free-phandle-cache-outside-of-the-devtre.patch b/debian/patches-rt/of-allocate-free-phandle-cache-outside-of-the-devtre.patch index 7290142e9..6b59f8367 100644 --- a/debian/patches-rt/of-allocate-free-phandle-cache-outside-of-the-devtre.patch +++ b/debian/patches-rt/of-allocate-free-phandle-cache-outside-of-the-devtre.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 31 Aug 2018 14:16:30 +0200 Subject: [PATCH] of: allocate / free phandle cache outside of the devtree_lock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The phandle cache code allocates memory while holding devtree_lock which is a raw_spinlock_t. Memory allocation (and free()) is not possible on @@ -13,53 +13,33 @@ Cc: Frank Rowand Cc: devicetree@vger.kernel.org Signed-off-by: Sebastian Andrzej Siewior --- - drivers/of/base.c | 22 ++++++++++++++-------- - 1 file changed, 14 insertions(+), 8 deletions(-) + drivers/of/base.c | 19 +++++++++++++------ + 1 file changed, 13 insertions(+), 6 deletions(-) --- a/drivers/of/base.c +++ b/drivers/of/base.c -@@ -132,46 +132,52 @@ void of_populate_phandle_cache(void) - u32 cache_entries; - struct device_node *np; - u32 phandles = 0; +@@ -130,31 +130,34 @@ static u32 phandle_cache_mask; + /* + * Caller must hold devtree_lock. + */ +-static void __of_free_phandle_cache(void) ++static struct device_node** __of_free_phandle_cache(void) + { + u32 cache_entries = phandle_cache_mask + 1; + u32 k; + struct device_node **shadow; - raw_spin_lock_irqsave(&devtree_lock, flags); + if (!phandle_cache) +- return; ++ return NULL; + + for (k = 0; k < cache_entries; k++) + of_node_put(phandle_cache[k]); - kfree(phandle_cache); + shadow = phandle_cache; phandle_cache = NULL; - - for_each_of_allnodes(np) - if (np->phandle && np->phandle != OF_PHANDLE_ILLEGAL) - phandles++; -+ raw_spin_unlock_irqrestore(&devtree_lock, flags); -+ kfree(shadow); - - if (!phandles) -- goto out; -+ return; - - cache_entries = roundup_pow_of_two(phandles); - phandle_cache_mask = cache_entries - 1; - -- phandle_cache = kcalloc(cache_entries, sizeof(*phandle_cache), -- GFP_ATOMIC); -- if (!phandle_cache) -- goto out; -+ shadow = kcalloc(cache_entries, sizeof(*phandle_cache), GFP_KERNEL); -+ if (!shadow) -+ return; -+ -+ raw_spin_lock_irqsave(&devtree_lock, flags); -+ phandle_cache = shadow; - - for_each_of_allnodes(np) - if (np->phandle && np->phandle != OF_PHANDLE_ILLEGAL) - phandle_cache[np->phandle & phandle_cache_mask] = np; - --out: - raw_spin_unlock_irqrestore(&devtree_lock, flags); ++ return shadow; } int of_free_phandle_cache(void) @@ -69,13 +49,48 @@ Signed-off-by: Sebastian Andrzej Siewior raw_spin_lock_irqsave(&devtree_lock, flags); -- kfree(phandle_cache); -+ shadow = phandle_cache; - phandle_cache = NULL; +- __of_free_phandle_cache(); ++ shadow = __of_free_phandle_cache(); raw_spin_unlock_irqrestore(&devtree_lock, flags); - +- + kfree(shadow); return 0; } #if !defined(CONFIG_MODULES) +@@ -189,10 +192,11 @@ void of_populate_phandle_cache(void) + u32 cache_entries; + struct device_node *np; + u32 phandles = 0; ++ struct device_node **shadow; + + raw_spin_lock_irqsave(&devtree_lock, flags); + +- __of_free_phandle_cache(); ++ shadow = __of_free_phandle_cache(); + + for_each_of_allnodes(np) + if (np->phandle && np->phandle != OF_PHANDLE_ILLEGAL) +@@ -200,12 +204,14 @@ void of_populate_phandle_cache(void) + + if (!phandles) + goto out; ++ raw_spin_unlock_irqrestore(&devtree_lock, flags); + + cache_entries = roundup_pow_of_two(phandles); + phandle_cache_mask = cache_entries - 1; + + phandle_cache = kcalloc(cache_entries, sizeof(*phandle_cache), + GFP_ATOMIC); ++ raw_spin_lock_irqsave(&devtree_lock, flags); + if (!phandle_cache) + goto out; + +@@ -217,6 +223,7 @@ void of_populate_phandle_cache(void) + + out: + raw_spin_unlock_irqrestore(&devtree_lock, flags); ++ kfree(shadow); + } + + void __init of_core_init(void) diff --git a/debian/patches-rt/oleg-signal-rt-fix.patch b/debian/patches-rt/oleg-signal-rt-fix.patch index 2e73336c3..ceeae0d1f 100644 --- a/debian/patches-rt/oleg-signal-rt-fix.patch +++ b/debian/patches-rt/oleg-signal-rt-fix.patch @@ -1,7 +1,7 @@ From: Oleg Nesterov Date: Tue, 14 Jul 2015 14:26:34 +0200 Subject: signal/x86: Delay calling signals in atomic -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz On x86_64 we must disable preemption before we enable interrupts for stack faults, int3 and debugging, because the current task is using diff --git a/debian/patches-rt/panic-disable-random-on-rt.patch b/debian/patches-rt/panic-disable-random-on-rt.patch index 6f6bc9148..b9a0a2bea 100644 --- a/debian/patches-rt/panic-disable-random-on-rt.patch +++ b/debian/patches-rt/panic-disable-random-on-rt.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Tue, 14 Jul 2015 14:26:34 +0200 Subject: panic: skip get_random_bytes for RT_FULL in init_oops_id -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Disable on -RT. If this is invoked from irq-context we will have problems to acquire the sleeping lock. diff --git a/debian/patches-rt/patch-to-introduce-rcu-bh-qs-where-safe-from-softirq.patch b/debian/patches-rt/patch-to-introduce-rcu-bh-qs-where-safe-from-softirq.patch index a72a2d196..b71a34897 100644 --- a/debian/patches-rt/patch-to-introduce-rcu-bh-qs-where-safe-from-softirq.patch +++ b/debian/patches-rt/patch-to-introduce-rcu-bh-qs-where-safe-from-softirq.patch @@ -1,7 +1,7 @@ Subject: rcu: Make ksoftirqd do RCU quiescent states From: "Paul E. McKenney" Date: Wed, 5 Oct 2011 11:45:18 -0700 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Implementing RCU-bh in terms of RCU-preempt makes the system vulnerable to network-based denial-of-service attacks. This patch therefore diff --git a/debian/patches-rt/pci-switchtec-Don-t-use-completion-s-wait-queue.patch b/debian/patches-rt/pci-switchtec-Don-t-use-completion-s-wait-queue.patch index d70bbbe5e..e875f196e 100644 --- a/debian/patches-rt/pci-switchtec-Don-t-use-completion-s-wait-queue.patch +++ b/debian/patches-rt/pci-switchtec-Don-t-use-completion-s-wait-queue.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 4 Oct 2017 10:24:23 +0200 Subject: [PATCH] pci/switchtec: Don't use completion's wait queue -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The poll callback is using completion's wait_queue_head_t member and puts it in poll_wait() so the poll() caller gets a wakeup after command diff --git a/debian/patches-rt/percpu-include-irqflags.h-for-raw_local_irq_save.patch b/debian/patches-rt/percpu-include-irqflags.h-for-raw_local_irq_save.patch index be0286366..f335a16ec 100644 --- a/debian/patches-rt/percpu-include-irqflags.h-for-raw_local_irq_save.patch +++ b/debian/patches-rt/percpu-include-irqflags.h-for-raw_local_irq_save.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 11 Oct 2018 16:39:59 +0200 Subject: [PATCH] percpu: include irqflags.h for raw_local_irq_save() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The header percpu.h header file is using raw_local_irq_save() but does not include irqflags.h for its definition. It compiles because the diff --git a/debian/patches-rt/perf-x86-intel-Delay-memory-deallocation-until-cpu_d.patch b/debian/patches-rt/perf-x86-intel-Delay-memory-deallocation-until-cpu_d.patch index eeed95b0e..766cad587 100644 --- a/debian/patches-rt/perf-x86-intel-Delay-memory-deallocation-until-cpu_d.patch +++ b/debian/patches-rt/perf-x86-intel-Delay-memory-deallocation-until-cpu_d.patch @@ -1,7 +1,7 @@ From: Peter Zijlstra Date: Wed, 19 Dec 2018 16:46:44 +0100 Subject: [PATCH] perf/x86/intel: Delay memory deallocation until cpu_dead -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz intel_pmu_cpu_prepare() allocated memory for ->shared_regs among other members of struct cpu_hw_events. This memory is released in diff --git a/debian/patches-rt/peter_zijlstra-frob-rcu.patch b/debian/patches-rt/peter_zijlstra-frob-rcu.patch index e3413eec3..f6627ba8d 100644 --- a/debian/patches-rt/peter_zijlstra-frob-rcu.patch +++ b/debian/patches-rt/peter_zijlstra-frob-rcu.patch @@ -1,7 +1,7 @@ Subject: rcu: Frob softirq test From: Peter Zijlstra Date: Sat Aug 13 00:23:17 CEST 2011 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz With RT_FULL we get the below wreckage: diff --git a/debian/patches-rt/peterz-percpu-rwsem-rt.patch b/debian/patches-rt/peterz-percpu-rwsem-rt.patch index dbfd2cdb7..592c504fc 100644 --- a/debian/patches-rt/peterz-percpu-rwsem-rt.patch +++ b/debian/patches-rt/peterz-percpu-rwsem-rt.patch @@ -1,7 +1,7 @@ Subject: locking/percpu-rwsem: Remove preempt_disable variants From: Peter Zijlstra Date: Wed Nov 23 16:29:32 CET 2016 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Effective revert commit: diff --git a/debian/patches-rt/pid.h-include-atomic.h.patch b/debian/patches-rt/pid.h-include-atomic.h.patch index 39fa251ef..946636af2 100644 --- a/debian/patches-rt/pid.h-include-atomic.h.patch +++ b/debian/patches-rt/pid.h-include-atomic.h.patch @@ -1,7 +1,7 @@ From: Grygorii Strashko Date: Tue, 21 Jul 2015 19:43:56 +0300 Subject: pid.h: include atomic.h -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz This patch fixes build error: CC kernel/pid_namespace.o diff --git a/debian/patches-rt/pinctrl-bcm2835-Use-raw-spinlock-for-RT-compatibilit.patch b/debian/patches-rt/pinctrl-bcm2835-Use-raw-spinlock-for-RT-compatibilit.patch index b9685a32c..a09184479 100644 --- a/debian/patches-rt/pinctrl-bcm2835-Use-raw-spinlock-for-RT-compatibilit.patch +++ b/debian/patches-rt/pinctrl-bcm2835-Use-raw-spinlock-for-RT-compatibilit.patch @@ -1,7 +1,7 @@ From: Lukas Wunner Date: Sat, 27 Oct 2018 10:15:33 +0200 Subject: [PATCH] pinctrl: bcm2835: Use raw spinlock for RT compatibility -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz [Upstream commit 71dfaa749f2f7c1722ebf6716d3f797a04528cba] diff --git a/debian/patches-rt/posix-timers-thread-posix-cpu-timers-on-rt.patch b/debian/patches-rt/posix-timers-thread-posix-cpu-timers-on-rt.patch index d8fbe8e70..ad0cc93fb 100644 --- a/debian/patches-rt/posix-timers-thread-posix-cpu-timers-on-rt.patch +++ b/debian/patches-rt/posix-timers-thread-posix-cpu-timers-on-rt.patch @@ -1,7 +1,7 @@ From: John Stultz Date: Fri, 3 Jul 2009 08:29:58 -0500 Subject: posix-timers: Thread posix-cpu-timers on -rt -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz posix-cpu-timer code takes non -rt safe locks in hard irq context. Move it to a thread. diff --git a/debian/patches-rt/power-disable-highmem-on-rt.patch b/debian/patches-rt/power-disable-highmem-on-rt.patch index 359d2deec..a69a464b8 100644 --- a/debian/patches-rt/power-disable-highmem-on-rt.patch +++ b/debian/patches-rt/power-disable-highmem-on-rt.patch @@ -1,7 +1,7 @@ Subject: powerpc: Disable highmem on RT From: Thomas Gleixner Date: Mon, 18 Jul 2011 17:08:34 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The current highmem handling on -RT is not compatible and needs fixups. diff --git a/debian/patches-rt/power-use-generic-rwsem-on-rt.patch b/debian/patches-rt/power-use-generic-rwsem-on-rt.patch index 44b6e62b2..a65b0db61 100644 --- a/debian/patches-rt/power-use-generic-rwsem-on-rt.patch +++ b/debian/patches-rt/power-use-generic-rwsem-on-rt.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Tue, 14 Jul 2015 14:26:34 +0200 Subject: powerpc: Use generic rwsem on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Use generic code which uses rtmutex diff --git a/debian/patches-rt/powerpc-kvm-Disable-in-kernel-MPIC-emulation-for-PRE.patch b/debian/patches-rt/powerpc-kvm-Disable-in-kernel-MPIC-emulation-for-PRE.patch index 2629d5acb..aea8a5e4f 100644 --- a/debian/patches-rt/powerpc-kvm-Disable-in-kernel-MPIC-emulation-for-PRE.patch +++ b/debian/patches-rt/powerpc-kvm-Disable-in-kernel-MPIC-emulation-for-PRE.patch @@ -1,7 +1,7 @@ From: Bogdan Purcareata Date: Fri, 24 Apr 2015 15:53:13 +0000 Subject: powerpc/kvm: Disable in-kernel MPIC emulation for PREEMPT_RT_FULL -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz While converting the openpic emulation code to use a raw_spinlock_t enables guests to run on RT, there's still a performance issue. For interrupts sent in diff --git a/debian/patches-rt/powerpc-preempt-lazy-support.patch b/debian/patches-rt/powerpc-preempt-lazy-support.patch index 069f5b538..7e4b16d28 100644 --- a/debian/patches-rt/powerpc-preempt-lazy-support.patch +++ b/debian/patches-rt/powerpc-preempt-lazy-support.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Thu, 1 Nov 2012 10:14:11 +0100 Subject: powerpc: Add support for lazy preemption -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Implement the powerpc pieces for lazy preempt. diff --git a/debian/patches-rt/preempt-lazy-support.patch b/debian/patches-rt/preempt-lazy-support.patch index c63a21b07..9eaf1a488 100644 --- a/debian/patches-rt/preempt-lazy-support.patch +++ b/debian/patches-rt/preempt-lazy-support.patch @@ -1,7 +1,7 @@ Subject: sched: Add support for lazy preemption From: Thomas Gleixner Date: Fri, 26 Oct 2012 18:50:54 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz It has become an obsession to mitigate the determinism vs. throughput loss of RT. Looking at the mainline semantics of preemption points @@ -406,7 +406,7 @@ Signed-off-by: Thomas Gleixner EXPORT_SYMBOL(migrate_enable); --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c -@@ -4018,7 +4018,7 @@ check_preempt_tick(struct cfs_rq *cfs_rq +@@ -4017,7 +4017,7 @@ check_preempt_tick(struct cfs_rq *cfs_rq ideal_runtime = sched_slice(cfs_rq, curr); delta_exec = curr->sum_exec_runtime - curr->prev_sum_exec_runtime; if (delta_exec > ideal_runtime) { @@ -415,7 +415,7 @@ Signed-off-by: Thomas Gleixner /* * The current task ran long enough, ensure it doesn't get * re-elected due to buddy favours. -@@ -4042,7 +4042,7 @@ check_preempt_tick(struct cfs_rq *cfs_rq +@@ -4041,7 +4041,7 @@ check_preempt_tick(struct cfs_rq *cfs_rq return; if (delta > ideal_runtime) @@ -424,7 +424,7 @@ Signed-off-by: Thomas Gleixner } static void -@@ -4184,7 +4184,7 @@ entity_tick(struct cfs_rq *cfs_rq, struc +@@ -4183,7 +4183,7 @@ entity_tick(struct cfs_rq *cfs_rq, struc * validating it and just reschedule. */ if (queued) { @@ -433,7 +433,7 @@ Signed-off-by: Thomas Gleixner return; } /* -@@ -4368,7 +4368,7 @@ static void __account_cfs_rq_runtime(str +@@ -4367,7 +4367,7 @@ static void __account_cfs_rq_runtime(str * hierarchy can be throttled */ if (!assign_cfs_rq_runtime(cfs_rq) && likely(cfs_rq->curr)) @@ -442,7 +442,7 @@ Signed-off-by: Thomas Gleixner } static __always_inline -@@ -5039,7 +5039,7 @@ static void hrtick_start_fair(struct rq +@@ -5038,7 +5038,7 @@ static void hrtick_start_fair(struct rq if (delta < 0) { if (rq->curr == p) @@ -451,7 +451,7 @@ Signed-off-by: Thomas Gleixner return; } hrtick_start(rq, delta); -@@ -6614,7 +6614,7 @@ static void check_preempt_wakeup(struct +@@ -6613,7 +6613,7 @@ static void check_preempt_wakeup(struct return; preempt: @@ -460,7 +460,7 @@ Signed-off-by: Thomas Gleixner /* * Only set the backward buddy when the current task is still * on the rq. This can happen when a wakeup gets interleaved -@@ -9725,7 +9725,7 @@ static void task_fork_fair(struct task_s +@@ -9700,7 +9700,7 @@ static void task_fork_fair(struct task_s * 'current' within the tree based on its new key value. */ swap(curr->vruntime, se->vruntime); @@ -469,7 +469,7 @@ Signed-off-by: Thomas Gleixner } se->vruntime -= cfs_rq->min_vruntime; -@@ -9749,7 +9749,7 @@ prio_changed_fair(struct rq *rq, struct +@@ -9724,7 +9724,7 @@ prio_changed_fair(struct rq *rq, struct */ if (rq->curr == p) { if (p->prio > oldprio) diff --git a/debian/patches-rt/preempt-nort-rt-variants.patch b/debian/patches-rt/preempt-nort-rt-variants.patch index 09d615437..6a2c33dbc 100644 --- a/debian/patches-rt/preempt-nort-rt-variants.patch +++ b/debian/patches-rt/preempt-nort-rt-variants.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Fri, 24 Jul 2009 12:38:56 +0200 Subject: preempt: Provide preempt_*_(no)rt variants -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz RT needs a few preempt_disable/enable points which are not necessary otherwise. Implement variants to avoid #ifdeffery. diff --git a/debian/patches-rt/printk-27force_early_printk-27-boot-param-to-help-with-debugging.patch b/debian/patches-rt/printk-27force_early_printk-27-boot-param-to-help-with-debugging.patch index 4b9402da9..3a9149827 100644 --- a/debian/patches-rt/printk-27force_early_printk-27-boot-param-to-help-with-debugging.patch +++ b/debian/patches-rt/printk-27force_early_printk-27-boot-param-to-help-with-debugging.patch @@ -1,7 +1,7 @@ Subject: printk: Add "force_early_printk" boot param to help with debugging From: Peter Zijlstra Date: Fri, 02 Sep 2011 14:41:29 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Gives me an option to screw printk and actually see what the machine says. diff --git a/debian/patches-rt/printk-kill.patch b/debian/patches-rt/printk-kill.patch index 4b28c4384..72d854600 100644 --- a/debian/patches-rt/printk-kill.patch +++ b/debian/patches-rt/printk-kill.patch @@ -1,7 +1,7 @@ Subject: printk: Add a printk kill switch From: Ingo Molnar Date: Fri, 22 Jul 2011 17:58:40 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Add a prinkt-kill-switch. This is used from (NMI) watchdog to ensure that it does not dead-lock with the early printk code. diff --git a/debian/patches-rt/printk-rt-aware.patch b/debian/patches-rt/printk-rt-aware.patch index 6d9f71f47..4d27abb5d 100644 --- a/debian/patches-rt/printk-rt-aware.patch +++ b/debian/patches-rt/printk-rt-aware.patch @@ -1,7 +1,7 @@ Subject: printk: Make rt aware From: Thomas Gleixner Date: Wed, 19 Sep 2012 14:50:37 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Drop the lock before calling the console driver and do not disable interrupts while printing to a serial console. diff --git a/debian/patches-rt/ptrace-fix-ptrace-vs-tasklist_lock-race.patch b/debian/patches-rt/ptrace-fix-ptrace-vs-tasklist_lock-race.patch index 064739b9d..16472e62e 100644 --- a/debian/patches-rt/ptrace-fix-ptrace-vs-tasklist_lock-race.patch +++ b/debian/patches-rt/ptrace-fix-ptrace-vs-tasklist_lock-race.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 29 Aug 2013 18:21:04 +0200 Subject: ptrace: fix ptrace vs tasklist_lock race -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz As explained by Alexander Fyodorov : diff --git a/debian/patches-rt/radix-tree-use-local-locks.patch b/debian/patches-rt/radix-tree-use-local-locks.patch index 1db00e80f..973ef66f9 100644 --- a/debian/patches-rt/radix-tree-use-local-locks.patch +++ b/debian/patches-rt/radix-tree-use-local-locks.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 25 Jan 2017 16:34:27 +0100 Subject: [PATCH] radix-tree: use local locks -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The preload functionality uses per-CPU variables and preempt-disable to ensure that it does not switch CPUs during its usage. This patch adds diff --git a/debian/patches-rt/random-avoid-preempt_disable-ed-section.patch b/debian/patches-rt/random-avoid-preempt_disable-ed-section.patch index 6f93903d9..b7a53db14 100644 --- a/debian/patches-rt/random-avoid-preempt_disable-ed-section.patch +++ b/debian/patches-rt/random-avoid-preempt_disable-ed-section.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 12 May 2017 15:46:17 +0200 Subject: [PATCH] random: avoid preempt_disable()ed section -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz extract_crng() will use sleeping locks while in a preempt_disable() section due to get_cpu_var(). diff --git a/debian/patches-rt/random-make-it-work-on-rt.patch b/debian/patches-rt/random-make-it-work-on-rt.patch index ca8d0bc71..8e47f4956 100644 --- a/debian/patches-rt/random-make-it-work-on-rt.patch +++ b/debian/patches-rt/random-make-it-work-on-rt.patch @@ -1,7 +1,7 @@ Subject: random: Make it work on rt From: Thomas Gleixner Date: Tue, 21 Aug 2012 20:38:50 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Delegate the random insertion to the forced threaded interrupt handler. Store the return IP of the hard interrupt handler in the irq diff --git a/debian/patches-rt/rcu-Eliminate-softirq-processing-from-rcutree.patch b/debian/patches-rt/rcu-Eliminate-softirq-processing-from-rcutree.patch index 95e1f6e08..9197d6a36 100644 --- a/debian/patches-rt/rcu-Eliminate-softirq-processing-from-rcutree.patch +++ b/debian/patches-rt/rcu-Eliminate-softirq-processing-from-rcutree.patch @@ -1,7 +1,7 @@ From: "Paul E. McKenney" Date: Mon, 4 Nov 2013 13:21:10 -0800 Subject: rcu: Eliminate softirq processing from rcutree -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Running RCU out of softirq is a problem for some workloads that would like to manage RCU core processing independently of other softirq work, diff --git a/debian/patches-rt/rcu-disable-rcu-fast-no-hz-on-rt.patch b/debian/patches-rt/rcu-disable-rcu-fast-no-hz-on-rt.patch index 7c7ea788a..83e495b88 100644 --- a/debian/patches-rt/rcu-disable-rcu-fast-no-hz-on-rt.patch +++ b/debian/patches-rt/rcu-disable-rcu-fast-no-hz-on-rt.patch @@ -1,7 +1,7 @@ Subject: rcu: Disable RCU_FAST_NO_HZ on RT From: Thomas Gleixner Date: Sun, 28 Oct 2012 13:26:09 +0000 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz This uses a timer_list timer from the irq disabled guts of the idle code. Disable it for now to prevent wreckage. diff --git a/debian/patches-rt/rcu-enable-rcu_normal_after_boot-by-default-for-RT.patch b/debian/patches-rt/rcu-enable-rcu_normal_after_boot-by-default-for-RT.patch index 12ef61a26..3adabb5a9 100644 --- a/debian/patches-rt/rcu-enable-rcu_normal_after_boot-by-default-for-RT.patch +++ b/debian/patches-rt/rcu-enable-rcu_normal_after_boot-by-default-for-RT.patch @@ -1,7 +1,7 @@ From: Julia Cartwright Date: Wed, 12 Oct 2016 11:21:14 -0500 Subject: [PATCH] rcu: enable rcu_normal_after_boot by default for RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The forcing of an expedited grace period is an expensive and very RT-application unfriendly operation, as it forcibly preempts all running diff --git a/debian/patches-rt/rcu-make-RCU_BOOST-default-on-RT.patch b/debian/patches-rt/rcu-make-RCU_BOOST-default-on-RT.patch index 95c05d235..80a05bc81 100644 --- a/debian/patches-rt/rcu-make-RCU_BOOST-default-on-RT.patch +++ b/debian/patches-rt/rcu-make-RCU_BOOST-default-on-RT.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 21 Mar 2014 20:19:05 +0100 Subject: rcu: make RCU_BOOST default on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Since it is no longer invoked from the softirq people run into OOM more often if the priority of the RCU thread is too low. Making boosting diff --git a/debian/patches-rt/rcu-merge-rcu-bh-into-rcu-preempt-for-rt.patch b/debian/patches-rt/rcu-merge-rcu-bh-into-rcu-preempt-for-rt.patch index ddb2ab955..4f8f30ef8 100644 --- a/debian/patches-rt/rcu-merge-rcu-bh-into-rcu-preempt-for-rt.patch +++ b/debian/patches-rt/rcu-merge-rcu-bh-into-rcu-preempt-for-rt.patch @@ -1,7 +1,7 @@ Subject: rcu: Merge RCU-bh into RCU-preempt Date: Wed, 5 Oct 2011 11:59:38 -0700 From: Thomas Gleixner -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The Linux kernel has long RCU-bh read-side critical sections that intolerably increase scheduling latency under mainline's RCU-bh rules, diff --git a/debian/patches-rt/re-preempt_rt_full-arm-coredump-fails-for-cpu-3e-3d-4.patch b/debian/patches-rt/re-preempt_rt_full-arm-coredump-fails-for-cpu-3e-3d-4.patch index ecf0fcfc2..f3b7e7e1e 100644 --- a/debian/patches-rt/re-preempt_rt_full-arm-coredump-fails-for-cpu-3e-3d-4.patch +++ b/debian/patches-rt/re-preempt_rt_full-arm-coredump-fails-for-cpu-3e-3d-4.patch @@ -1,7 +1,7 @@ Subject: ARM: Initialize split page table locks for vector page From: Frank Rowand Date: Sat, 1 Oct 2011 18:58:13 -0700 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Without this patch, ARM can not use SPLIT_PTLOCK_CPUS if PREEMPT_RT_FULL=y because vectors_user_mapping() creates a diff --git a/debian/patches-rt/rt-Increase-decrease-the-nr-of-migratory-tasks-when-.patch b/debian/patches-rt/rt-Increase-decrease-the-nr-of-migratory-tasks-when-.patch index 6a9f8e287..607858b45 100644 --- a/debian/patches-rt/rt-Increase-decrease-the-nr-of-migratory-tasks-when-.patch +++ b/debian/patches-rt/rt-Increase-decrease-the-nr-of-migratory-tasks-when-.patch @@ -1,7 +1,7 @@ From: Daniel Bristot de Oliveira Date: Mon, 26 Jun 2017 17:07:15 +0200 Subject: rt: Increase/decrease the nr of migratory tasks when enabling/disabling migration -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz There is a problem in the migrate_disable()/enable() implementation regarding the number of migratory tasks in the rt/dl RQs. The problem diff --git a/debian/patches-rt/rt-introduce-cpu-chill.patch b/debian/patches-rt/rt-introduce-cpu-chill.patch index 3f5c4f776..7f7ec7531 100644 --- a/debian/patches-rt/rt-introduce-cpu-chill.patch +++ b/debian/patches-rt/rt-introduce-cpu-chill.patch @@ -1,7 +1,7 @@ Subject: rt: Introduce cpu_chill() From: Thomas Gleixner Date: Wed, 07 Mar 2012 20:51:03 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Retry loops on RT might loop forever when the modifying side was preempted. Add cpu_chill() to replace cpu_relax(). cpu_chill() diff --git a/debian/patches-rt/rt-local-irq-lock.patch b/debian/patches-rt/rt-local-irq-lock.patch index 26d0117be..66d41ebe6 100644 --- a/debian/patches-rt/rt-local-irq-lock.patch +++ b/debian/patches-rt/rt-local-irq-lock.patch @@ -1,7 +1,7 @@ Subject: rt: Add local irq locks From: Thomas Gleixner Date: Mon, 20 Jun 2011 09:03:47 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Introduce locallock. For !RT this maps to preempt_disable()/ local_irq_disable() so there is not much that changes. For RT this will diff --git a/debian/patches-rt/rt-preempt-base-config.patch b/debian/patches-rt/rt-preempt-base-config.patch index 381aa4222..fea34ed1b 100644 --- a/debian/patches-rt/rt-preempt-base-config.patch +++ b/debian/patches-rt/rt-preempt-base-config.patch @@ -1,7 +1,7 @@ Subject: rt: Provide PREEMPT_RT_BASE config switch From: Thomas Gleixner Date: Fri, 17 Jun 2011 12:39:57 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Introduce PREEMPT_RT_BASE which enables parts of PREEMPT_RT_FULL. Forces interrupt threading and enables some of the RT diff --git a/debian/patches-rt/rt-serial-warn-fix.patch b/debian/patches-rt/rt-serial-warn-fix.patch index 62d86993e..1a426243e 100644 --- a/debian/patches-rt/rt-serial-warn-fix.patch +++ b/debian/patches-rt/rt-serial-warn-fix.patch @@ -1,7 +1,7 @@ Subject: rt: Improve the serial console PASS_LIMIT From: Ingo Molnar Date: Wed Dec 14 13:05:54 CET 2011 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Beyond the warning: diff --git a/debian/patches-rt/rtmutex-Make-lock_killable-work.patch b/debian/patches-rt/rtmutex-Make-lock_killable-work.patch index 177999c04..d5ffe8a5f 100644 --- a/debian/patches-rt/rtmutex-Make-lock_killable-work.patch +++ b/debian/patches-rt/rtmutex-Make-lock_killable-work.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Sat, 1 Apr 2017 12:50:59 +0200 Subject: [PATCH] rtmutex: Make lock_killable work -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Locking an rt mutex killable does not work because signal handling is restricted to TASK_INTERRUPTIBLE. diff --git a/debian/patches-rt/rtmutex-Provide-rt_mutex_slowlock_locked.patch b/debian/patches-rt/rtmutex-Provide-rt_mutex_slowlock_locked.patch index 1b2f92eee..921e414da 100644 --- a/debian/patches-rt/rtmutex-Provide-rt_mutex_slowlock_locked.patch +++ b/debian/patches-rt/rtmutex-Provide-rt_mutex_slowlock_locked.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Thu, 12 Oct 2017 16:14:22 +0200 Subject: rtmutex: Provide rt_mutex_slowlock_locked() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz This is the inner-part of rt_mutex_slowlock(), required for rwsem-rt. diff --git a/debian/patches-rt/rtmutex-add-mutex-implementation-based-on-rtmutex.patch b/debian/patches-rt/rtmutex-add-mutex-implementation-based-on-rtmutex.patch index 0e1715010..b065e6670 100644 --- a/debian/patches-rt/rtmutex-add-mutex-implementation-based-on-rtmutex.patch +++ b/debian/patches-rt/rtmutex-add-mutex-implementation-based-on-rtmutex.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Thu, 12 Oct 2017 17:17:03 +0200 Subject: rtmutex: add mutex implementation based on rtmutex -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior diff --git a/debian/patches-rt/rtmutex-add-rwlock-implementation-based-on-rtmutex.patch b/debian/patches-rt/rtmutex-add-rwlock-implementation-based-on-rtmutex.patch index b29f1cc1a..569c2f4e7 100644 --- a/debian/patches-rt/rtmutex-add-rwlock-implementation-based-on-rtmutex.patch +++ b/debian/patches-rt/rtmutex-add-rwlock-implementation-based-on-rtmutex.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Thu, 12 Oct 2017 17:18:06 +0200 Subject: rtmutex: add rwlock implementation based on rtmutex -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The implementation is bias-based, similar to the rwsem implementation. diff --git a/debian/patches-rt/rtmutex-add-rwsem-implementation-based-on-rtmutex.patch b/debian/patches-rt/rtmutex-add-rwsem-implementation-based-on-rtmutex.patch index 39a611f85..1b0def40d 100644 --- a/debian/patches-rt/rtmutex-add-rwsem-implementation-based-on-rtmutex.patch +++ b/debian/patches-rt/rtmutex-add-rwsem-implementation-based-on-rtmutex.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Thu, 12 Oct 2017 17:28:34 +0200 Subject: rtmutex: add rwsem implementation based on rtmutex -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The RT specific R/W semaphore implementation restricts the number of readers to one because a writer cannot block on multiple readers and inherit its diff --git a/debian/patches-rt/rtmutex-add-sleeping-lock-implementation.patch b/debian/patches-rt/rtmutex-add-sleeping-lock-implementation.patch index dde9c2fff..d9f578b94 100644 --- a/debian/patches-rt/rtmutex-add-sleeping-lock-implementation.patch +++ b/debian/patches-rt/rtmutex-add-sleeping-lock-implementation.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Thu, 12 Oct 2017 17:11:19 +0200 Subject: rtmutex: add sleeping lock implementation -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior diff --git a/debian/patches-rt/rtmutex-add-ww_mutex-addon-for-mutex-rt.patch b/debian/patches-rt/rtmutex-add-ww_mutex-addon-for-mutex-rt.patch index 368a1b669..df05f09fa 100644 --- a/debian/patches-rt/rtmutex-add-ww_mutex-addon-for-mutex-rt.patch +++ b/debian/patches-rt/rtmutex-add-ww_mutex-addon-for-mutex-rt.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 12 Oct 2017 17:34:38 +0200 Subject: rtmutex: add ww_mutex addon for mutex-rt -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Signed-off-by: Sebastian Andrzej Siewior --- diff --git a/debian/patches-rt/rtmutex-annotate-sleeping-lock-context.patch b/debian/patches-rt/rtmutex-annotate-sleeping-lock-context.patch index fb1f48c3f..46784417c 100644 --- a/debian/patches-rt/rtmutex-annotate-sleeping-lock-context.patch +++ b/debian/patches-rt/rtmutex-annotate-sleeping-lock-context.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 21 Sep 2017 14:25:13 +0200 Subject: [PATCH] rtmutex: annotate sleeping lock context -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The RCU code complains on schedule() within a rcu_readlock() section. The valid scenario on -RT is if a sleeping is held. In order to suppress diff --git a/debian/patches-rt/rtmutex-avoid-include-hell.patch b/debian/patches-rt/rtmutex-avoid-include-hell.patch index eeb0d14b2..d406f4f54 100644 --- a/debian/patches-rt/rtmutex-avoid-include-hell.patch +++ b/debian/patches-rt/rtmutex-avoid-include-hell.patch @@ -1,7 +1,7 @@ Subject: rtmutex: Avoid include hell From: Thomas Gleixner Date: Wed, 29 Jun 2011 20:06:39 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Include only the required raw types. This avoids pulling in the complete spinlock header which in turn requires rtmutex.h at some point. diff --git a/debian/patches-rt/rtmutex-export-lockdep-less-version-of-rt_mutex-s-lo.patch b/debian/patches-rt/rtmutex-export-lockdep-less-version-of-rt_mutex-s-lo.patch index 996427268..1fd5b2c85 100644 --- a/debian/patches-rt/rtmutex-export-lockdep-less-version-of-rt_mutex-s-lo.patch +++ b/debian/patches-rt/rtmutex-export-lockdep-less-version-of-rt_mutex-s-lo.patch @@ -2,7 +2,7 @@ From: Thomas Gleixner Date: Thu, 12 Oct 2017 16:36:39 +0200 Subject: rtmutex: export lockdep-less version of rt_mutex's lock, trylock and unlock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Required for lock implementation ontop of rtmutex. diff --git a/debian/patches-rt/rtmutex-futex-prepare-rt.patch b/debian/patches-rt/rtmutex-futex-prepare-rt.patch index 0078acace..a36db15b7 100644 --- a/debian/patches-rt/rtmutex-futex-prepare-rt.patch +++ b/debian/patches-rt/rtmutex-futex-prepare-rt.patch @@ -1,7 +1,7 @@ Subject: rtmutex: Handle the various new futex race conditions From: Thomas Gleixner Date: Fri, 10 Jun 2011 11:04:15 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz RT opens a few new interesting race conditions in the rtmutex/futex combo due to futex hash bucket lock being a 'sleeping' spinlock and diff --git a/debian/patches-rt/rtmutex-lock-killable.patch b/debian/patches-rt/rtmutex-lock-killable.patch index c9f643697..50a3bfa1e 100644 --- a/debian/patches-rt/rtmutex-lock-killable.patch +++ b/debian/patches-rt/rtmutex-lock-killable.patch @@ -1,7 +1,7 @@ Subject: rtmutex: Add rtmutex_lock_killable() From: Thomas Gleixner Date: Thu, 09 Jun 2011 11:43:52 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Add "killable" type to rtmutex. We need this since rtmutex are used as "normal" mutexes which do use this type. diff --git a/debian/patches-rt/rtmutex-rwlock-preserve-state-like-a-sleeping-lock.patch b/debian/patches-rt/rtmutex-rwlock-preserve-state-like-a-sleeping-lock.patch new file mode 100644 index 000000000..fdbed1011 --- /dev/null +++ b/debian/patches-rt/rtmutex-rwlock-preserve-state-like-a-sleeping-lock.patch @@ -0,0 +1,27 @@ +From: Sebastian Andrzej Siewior +Date: Fri, 11 Jan 2019 21:16:31 +0100 +Subject: [PATCH] rtmutex/rwlock: preserve state like a sleeping lock +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz + +The rwlock is spinning while acquiring a lock. Therefore it must become +a sleeping lock on RT and preserve its task state while sleeping and +waiting for the lock to become available. + +Reported-by: Joe Korty +Cc: stable-rt@vger.kernel.org +Signed-off-by: Sebastian Andrzej Siewior +--- + kernel/locking/rwlock-rt.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +--- a/kernel/locking/rwlock-rt.c ++++ b/kernel/locking/rwlock-rt.c +@@ -128,7 +128,7 @@ void __sched __read_rt_lock(struct rt_rw + * That would put Reader1 behind the writer waiting on + * Reader2 to call read_unlock() which might be unbound. + */ +- rt_mutex_init_waiter(&waiter, false); ++ rt_mutex_init_waiter(&waiter, true); + rt_spin_lock_slowlock_locked(m, &waiter, flags); + /* + * The slowlock() above is guaranteed to return with the rtmutex is diff --git a/debian/patches-rt/rtmutex-trylock-is-okay-on-RT.patch b/debian/patches-rt/rtmutex-trylock-is-okay-on-RT.patch index 5b3e0883b..fc790358d 100644 --- a/debian/patches-rt/rtmutex-trylock-is-okay-on-RT.patch +++ b/debian/patches-rt/rtmutex-trylock-is-okay-on-RT.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed 02 Dec 2015 11:34:07 +0100 Subject: rtmutex: trylock is okay on -RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz non-RT kernel could deadlock on rt_mutex_trylock() in softirq context. On -RT we don't run softirqs in IRQ context but in thread context so it is diff --git a/debian/patches-rt/rtmutex-wire-up-RT-s-locking.patch b/debian/patches-rt/rtmutex-wire-up-RT-s-locking.patch index b99f43f54..a115095c6 100644 --- a/debian/patches-rt/rtmutex-wire-up-RT-s-locking.patch +++ b/debian/patches-rt/rtmutex-wire-up-RT-s-locking.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Thu, 12 Oct 2017 17:31:14 +0200 Subject: rtmutex: wire up RT's locking -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Signed-off-by: Thomas Gleixner Signed-off-by: Sebastian Andrzej Siewior diff --git a/debian/patches-rt/rtmutex_dont_include_rcu.patch b/debian/patches-rt/rtmutex_dont_include_rcu.patch index 880cd4219..1a35531c8 100644 --- a/debian/patches-rt/rtmutex_dont_include_rcu.patch +++ b/debian/patches-rt/rtmutex_dont_include_rcu.patch @@ -1,6 +1,6 @@ From: Sebastian Andrzej Siewior Subject: rbtree: don't include the rcu header -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The RCU header pulls in spinlock.h and fails due not yet defined types: diff --git a/debian/patches-rt/sched-Allow-pinned-user-tasks-to-be-awakened-to-the-.patch b/debian/patches-rt/sched-Allow-pinned-user-tasks-to-be-awakened-to-the-.patch index 1cfef1aaf..4c4327ae0 100644 --- a/debian/patches-rt/sched-Allow-pinned-user-tasks-to-be-awakened-to-the-.patch +++ b/debian/patches-rt/sched-Allow-pinned-user-tasks-to-be-awakened-to-the-.patch @@ -2,7 +2,7 @@ From: Mike Galbraith Date: Sun, 19 Aug 2018 08:28:35 +0200 Subject: [PATCH] sched: Allow pinned user tasks to be awakened to the CPU they pinned -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Since commit 7af443ee16976 ("sched/core: Require cpu_active() in select_task_rq(), for user tasks") select_fallback_rq() will BUG() if diff --git a/debian/patches-rt/sched-delay-put-task.patch b/debian/patches-rt/sched-delay-put-task.patch index 6d6b2e230..b0628fdc8 100644 --- a/debian/patches-rt/sched-delay-put-task.patch +++ b/debian/patches-rt/sched-delay-put-task.patch @@ -1,7 +1,7 @@ Subject: sched: Move task_struct cleanup to RCU From: Thomas Gleixner Date: Tue, 31 May 2011 16:59:16 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz __put_task_struct() does quite some expensive work. We don't want to burden random tasks with that. diff --git a/debian/patches-rt/sched-disable-rt-group-sched-on-rt.patch b/debian/patches-rt/sched-disable-rt-group-sched-on-rt.patch index 1d893e6a9..4ff6ec141 100644 --- a/debian/patches-rt/sched-disable-rt-group-sched-on-rt.patch +++ b/debian/patches-rt/sched-disable-rt-group-sched-on-rt.patch @@ -1,7 +1,7 @@ Subject: sched: Disable CONFIG_RT_GROUP_SCHED on RT From: Thomas Gleixner Date: Mon, 18 Jul 2011 17:03:52 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Carsten reported problems when running: diff --git a/debian/patches-rt/sched-disable-ttwu-queue.patch b/debian/patches-rt/sched-disable-ttwu-queue.patch index 01e1d6b47..ea5627802 100644 --- a/debian/patches-rt/sched-disable-ttwu-queue.patch +++ b/debian/patches-rt/sched-disable-ttwu-queue.patch @@ -1,7 +1,7 @@ Subject: sched: Disable TTWU_QUEUE on RT From: Thomas Gleixner Date: Tue, 13 Sep 2011 16:42:35 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The queued remote wakeup mechanism can introduce rather large latencies if the number of migrated tasks is high. Disable it for RT. diff --git a/debian/patches-rt/sched-fair-Make-the-hrtimers-non-hard-again.patch b/debian/patches-rt/sched-fair-Make-the-hrtimers-non-hard-again.patch index a1acdc86d..3363cd285 100644 --- a/debian/patches-rt/sched-fair-Make-the-hrtimers-non-hard-again.patch +++ b/debian/patches-rt/sched-fair-Make-the-hrtimers-non-hard-again.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Tue, 8 Jan 2019 12:31:06 +0100 Subject: [PATCH] sched/fair: Make the hrtimers non-hard again -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Since commit "sched/fair: Robustify CFS-bandwidth timer locking" both hrtimer can run in softirq context because now interrupts are disabled @@ -14,7 +14,7 @@ Signed-off-by: Sebastian Andrzej Siewior --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c -@@ -4880,9 +4880,9 @@ void init_cfs_bandwidth(struct cfs_bandw +@@ -4879,9 +4879,9 @@ void init_cfs_bandwidth(struct cfs_bandw cfs_b->period = ns_to_ktime(default_cfs_period()); INIT_LIST_HEAD(&cfs_b->throttled_cfs_rq); diff --git a/debian/patches-rt/sched-fair-Robustify-CFS-bandwidth-timer-locking.patch b/debian/patches-rt/sched-fair-Robustify-CFS-bandwidth-timer-locking.patch index 217d8a3c3..2c6aecdcd 100644 --- a/debian/patches-rt/sched-fair-Robustify-CFS-bandwidth-timer-locking.patch +++ b/debian/patches-rt/sched-fair-Robustify-CFS-bandwidth-timer-locking.patch @@ -1,7 +1,7 @@ From: Peter Zijlstra Date: Mon, 7 Jan 2019 13:52:31 +0100 Subject: [PATCH] sched/fair: Robustify CFS-bandwidth timer locking -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Traditionally hrtimer callbacks were run with IRQs disabled, but with the introduction of HRTIMER_MODE_SOFT it is possible they run from @@ -30,7 +30,7 @@ Signed-off-by: Sebastian Andrzej Siewior --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c -@@ -4554,7 +4554,7 @@ static u64 distribute_cfs_runtime(struct +@@ -4553,7 +4553,7 @@ static u64 distribute_cfs_runtime(struct struct rq *rq = rq_of(cfs_rq); struct rq_flags rf; @@ -39,7 +39,7 @@ Signed-off-by: Sebastian Andrzej Siewior if (!cfs_rq_throttled(cfs_rq)) goto next; -@@ -4571,7 +4571,7 @@ static u64 distribute_cfs_runtime(struct +@@ -4570,7 +4570,7 @@ static u64 distribute_cfs_runtime(struct unthrottle_cfs_rq(cfs_rq); next: @@ -48,7 +48,7 @@ Signed-off-by: Sebastian Andrzej Siewior if (!remaining) break; -@@ -4587,7 +4587,7 @@ static u64 distribute_cfs_runtime(struct +@@ -4586,7 +4586,7 @@ static u64 distribute_cfs_runtime(struct * period the timer is deactivated until scheduling resumes; cfs_b->idle is * used to track this state. */ @@ -57,7 +57,7 @@ Signed-off-by: Sebastian Andrzej Siewior { u64 runtime, runtime_expires; int throttled; -@@ -4629,11 +4629,11 @@ static int do_sched_cfs_period_timer(str +@@ -4628,11 +4628,11 @@ static int do_sched_cfs_period_timer(str while (throttled && cfs_b->runtime > 0 && !cfs_b->distribute_running) { runtime = cfs_b->runtime; cfs_b->distribute_running = 1; @@ -71,7 +71,7 @@ Signed-off-by: Sebastian Andrzej Siewior cfs_b->distribute_running = 0; throttled = !list_empty(&cfs_b->throttled_cfs_rq); -@@ -4742,17 +4742,18 @@ static __always_inline void return_cfs_r +@@ -4741,17 +4741,18 @@ static __always_inline void return_cfs_r static void do_sched_cfs_slack_timer(struct cfs_bandwidth *cfs_b) { u64 runtime = 0, slice = sched_cfs_bandwidth_slice(); @@ -93,7 +93,7 @@ Signed-off-by: Sebastian Andrzej Siewior return; } -@@ -4763,18 +4764,18 @@ static void do_sched_cfs_slack_timer(str +@@ -4762,18 +4763,18 @@ static void do_sched_cfs_slack_timer(str if (runtime) cfs_b->distribute_running = 1; @@ -115,7 +115,7 @@ Signed-off-by: Sebastian Andrzej Siewior } /* -@@ -4852,20 +4853,21 @@ static enum hrtimer_restart sched_cfs_pe +@@ -4851,20 +4852,21 @@ static enum hrtimer_restart sched_cfs_pe { struct cfs_bandwidth *cfs_b = container_of(timer, struct cfs_bandwidth, period_timer); diff --git a/debian/patches-rt/sched-limit-nr-migrate.patch b/debian/patches-rt/sched-limit-nr-migrate.patch index 981d29b3c..ed1968f57 100644 --- a/debian/patches-rt/sched-limit-nr-migrate.patch +++ b/debian/patches-rt/sched-limit-nr-migrate.patch @@ -1,7 +1,7 @@ Subject: sched: Limit the number of task migrations per batch From: Thomas Gleixner Date: Mon, 06 Jun 2011 12:12:51 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Put an upper limit on the number of tasks which are migrated per batch to avoid large latencies. diff --git a/debian/patches-rt/sched-might-sleep-do-not-account-rcu-depth.patch b/debian/patches-rt/sched-might-sleep-do-not-account-rcu-depth.patch index fb5a4ae02..46a49e4b6 100644 --- a/debian/patches-rt/sched-might-sleep-do-not-account-rcu-depth.patch +++ b/debian/patches-rt/sched-might-sleep-do-not-account-rcu-depth.patch @@ -1,7 +1,7 @@ Subject: sched: Do not account rcu_preempt_depth on RT in might_sleep() From: Thomas Gleixner Date: Tue, 07 Jun 2011 09:19:06 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz RT changes the rcu_preempt_depth semantics, so we cannot check for it in might_sleep(). diff --git a/debian/patches-rt/sched-migrate_disable-Add-export_symbol_gpl-for-__mi.patch b/debian/patches-rt/sched-migrate_disable-Add-export_symbol_gpl-for-__mi.patch index b9c2a7b97..b778b5543 100644 --- a/debian/patches-rt/sched-migrate_disable-Add-export_symbol_gpl-for-__mi.patch +++ b/debian/patches-rt/sched-migrate_disable-Add-export_symbol_gpl-for-__mi.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior Date: Tue, 9 Oct 2018 17:34:50 +0200 Subject: [PATCH] sched/migrate_disable: Add export_symbol_gpl for __migrate_disabled -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Jonathan reported that lttng/modules can't use __migrate_disabled(). This function is only used by sched/core itself and the tracing diff --git a/debian/patches-rt/sched-migrate_disable-fallback-to-preempt_disable-in.patch b/debian/patches-rt/sched-migrate_disable-fallback-to-preempt_disable-in.patch index fe3f33d0a..5589fd6b2 100644 --- a/debian/patches-rt/sched-migrate_disable-fallback-to-preempt_disable-in.patch +++ b/debian/patches-rt/sched-migrate_disable-fallback-to-preempt_disable-in.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 5 Jul 2018 14:44:51 +0200 Subject: [PATCH] sched/migrate_disable: fallback to preempt_disable() instead barrier() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz On SMP + !RT migrate_disable() is still around. It is not part of spin_lock() anymore so it has almost no users. However the futex code has a workaround for diff --git a/debian/patches-rt/sched-mmdrop-delayed.patch b/debian/patches-rt/sched-mmdrop-delayed.patch index d16fdbdc7..e91f26e02 100644 --- a/debian/patches-rt/sched-mmdrop-delayed.patch +++ b/debian/patches-rt/sched-mmdrop-delayed.patch @@ -1,7 +1,7 @@ Subject: sched: Move mmdrop to RCU on RT From: Thomas Gleixner Date: Mon, 06 Jun 2011 12:20:33 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Takes sleeping locks and calls into the memory allocator, so nothing we want to do in task switch and oder atomic contexts. diff --git a/debian/patches-rt/sched-rt-mutex-wakeup.patch b/debian/patches-rt/sched-rt-mutex-wakeup.patch index d73f9f052..c988b8334 100644 --- a/debian/patches-rt/sched-rt-mutex-wakeup.patch +++ b/debian/patches-rt/sched-rt-mutex-wakeup.patch @@ -1,7 +1,7 @@ Subject: sched: Add saved_state for tasks blocked on sleeping locks From: Thomas Gleixner Date: Sat, 25 Jun 2011 09:21:04 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Spinlocks are state preserving in !RT. RT changes the state when a task gets blocked on a lock. So we need to remember the state before diff --git a/debian/patches-rt/sched-workqueue-Only-wake-up-idle-workers-if-not-blo.patch b/debian/patches-rt/sched-workqueue-Only-wake-up-idle-workers-if-not-blo.patch index 9866d945e..26f1d0d92 100644 --- a/debian/patches-rt/sched-workqueue-Only-wake-up-idle-workers-if-not-blo.patch +++ b/debian/patches-rt/sched-workqueue-Only-wake-up-idle-workers-if-not-blo.patch @@ -1,7 +1,7 @@ From: Steven Rostedt Date: Mon, 18 Mar 2013 15:12:49 -0400 Subject: sched/workqueue: Only wake up idle workers if not blocked on sleeping spin lock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz In -rt, most spin_locks() turn into mutexes. One of these spin_lock conversions is performed on the workqueue gcwq->lock. When the idle diff --git a/debian/patches-rt/scsi-fcoe-rt-aware.patch b/debian/patches-rt/scsi-fcoe-rt-aware.patch index d25f648eb..de5604c62 100644 --- a/debian/patches-rt/scsi-fcoe-rt-aware.patch +++ b/debian/patches-rt/scsi-fcoe-rt-aware.patch @@ -1,7 +1,7 @@ Subject: scsi/fcoe: Make RT aware. From: Thomas Gleixner Date: Sat, 12 Nov 2011 14:00:48 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Do not disable preemption while taking sleeping locks. All user look safe for migrate_diable() only. diff --git a/debian/patches-rt/seqlock-prevent-rt-starvation.patch b/debian/patches-rt/seqlock-prevent-rt-starvation.patch index 7b08e5cb0..ef42d9637 100644 --- a/debian/patches-rt/seqlock-prevent-rt-starvation.patch +++ b/debian/patches-rt/seqlock-prevent-rt-starvation.patch @@ -1,7 +1,7 @@ Subject: seqlock: Prevent rt starvation From: Thomas Gleixner Date: Wed, 22 Feb 2012 12:03:30 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz If a low prio writer gets preempted while holding the seqlock write locked, a high prio reader spins forever on RT. diff --git a/debian/patches-rt/series b/debian/patches-rt/series index 44ec56de3..38f477688 100644 --- a/debian/patches-rt/series +++ b/debian/patches-rt/series @@ -250,6 +250,7 @@ rtmutex-add-sleeping-lock-implementation.patch rtmutex-add-mutex-implementation-based-on-rtmutex.patch rtmutex-add-rwsem-implementation-based-on-rtmutex.patch rtmutex-add-rwlock-implementation-based-on-rtmutex.patch +rtmutex-rwlock-preserve-state-like-a-sleeping-lock.patch rtmutex-wire-up-RT-s-locking.patch rtmutex-add-ww_mutex-addon-for-mutex-rt.patch # Allow to enable RT-FULL after sleeping spinlocks are wired up diff --git a/debian/patches-rt/signal-revert-ptrace-preempt-magic.patch b/debian/patches-rt/signal-revert-ptrace-preempt-magic.patch index 3b1537121..93e0b1120 100644 --- a/debian/patches-rt/signal-revert-ptrace-preempt-magic.patch +++ b/debian/patches-rt/signal-revert-ptrace-preempt-magic.patch @@ -1,7 +1,7 @@ Subject: signal: Revert ptrace preempt magic From: Thomas Gleixner Date: Wed, 21 Sep 2011 19:57:12 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Upstream commit '53da1d9456fe7f8 fix ptrace slowness' is nothing more than a bandaid around the ptrace design trainwreck. It's not a diff --git a/debian/patches-rt/signals-allow-rt-tasks-to-cache-one-sigqueue-struct.patch b/debian/patches-rt/signals-allow-rt-tasks-to-cache-one-sigqueue-struct.patch index 6e0f42fec..47b664062 100644 --- a/debian/patches-rt/signals-allow-rt-tasks-to-cache-one-sigqueue-struct.patch +++ b/debian/patches-rt/signals-allow-rt-tasks-to-cache-one-sigqueue-struct.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Fri, 3 Jul 2009 08:44:56 -0500 Subject: signals: Allow rt tasks to cache one sigqueue struct -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz To avoid allocation allow rt tasks to cache one sigqueue struct in task struct. diff --git a/debian/patches-rt/skbufhead-raw-lock.patch b/debian/patches-rt/skbufhead-raw-lock.patch index 885fd5099..ebb0a6171 100644 --- a/debian/patches-rt/skbufhead-raw-lock.patch +++ b/debian/patches-rt/skbufhead-raw-lock.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Tue, 12 Jul 2011 15:38:34 +0200 Subject: net: Use skbufhead with raw lock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Use the rps lock as rawlock so we can keep irq-off regions. It looks low latency. However we can't kfree() from this context therefore we defer this diff --git a/debian/patches-rt/slub-disable-SLUB_CPU_PARTIAL.patch b/debian/patches-rt/slub-disable-SLUB_CPU_PARTIAL.patch index 7c0283d7c..ec51b528a 100644 --- a/debian/patches-rt/slub-disable-SLUB_CPU_PARTIAL.patch +++ b/debian/patches-rt/slub-disable-SLUB_CPU_PARTIAL.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 15 Apr 2015 19:00:47 +0200 Subject: slub: Disable SLUB_CPU_PARTIAL -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz |BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:915 |in_atomic(): 1, irqs_disabled(): 0, pid: 87, name: rcuop/7 diff --git a/debian/patches-rt/slub-enable-irqs-for-no-wait.patch b/debian/patches-rt/slub-enable-irqs-for-no-wait.patch index 5e4ed8e32..df2e54a8d 100644 --- a/debian/patches-rt/slub-enable-irqs-for-no-wait.patch +++ b/debian/patches-rt/slub-enable-irqs-for-no-wait.patch @@ -1,7 +1,7 @@ Subject: slub: Enable irqs for __GFP_WAIT From: Thomas Gleixner Date: Wed, 09 Jan 2013 12:08:15 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz SYSTEM_RUNNING might be too late for enabling interrupts. Allocations with GFP_WAIT can happen before that. So use this as an indicator. diff --git a/debian/patches-rt/softirq-disable-softirq-stacks-for-rt.patch b/debian/patches-rt/softirq-disable-softirq-stacks-for-rt.patch index faaf52fef..42ef8c3d0 100644 --- a/debian/patches-rt/softirq-disable-softirq-stacks-for-rt.patch +++ b/debian/patches-rt/softirq-disable-softirq-stacks-for-rt.patch @@ -1,7 +1,7 @@ Subject: softirq: Disable softirq stacks for RT From: Thomas Gleixner Date: Mon, 18 Jul 2011 13:59:17 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Disable extra stacks for softirqs. We want to preempt softirqs and having them on special IRQ-stack does not make this easier. diff --git a/debian/patches-rt/softirq-preempt-fix-3-re.patch b/debian/patches-rt/softirq-preempt-fix-3-re.patch index 1da38c2a8..3327cd7e9 100644 --- a/debian/patches-rt/softirq-preempt-fix-3-re.patch +++ b/debian/patches-rt/softirq-preempt-fix-3-re.patch @@ -1,7 +1,7 @@ Subject: softirq: Check preemption after reenabling interrupts From: Thomas Gleixner Date: Sun, 13 Nov 2011 17:17:09 +0100 (CET) -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz raise_softirq_irqoff() disables interrupts and wakes the softirq daemon, but after reenabling interrupts there is no preemption check, diff --git a/debian/patches-rt/softirq-split-locks.patch b/debian/patches-rt/softirq-split-locks.patch index 263fc5dae..4909250c7 100644 --- a/debian/patches-rt/softirq-split-locks.patch +++ b/debian/patches-rt/softirq-split-locks.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Thu, 04 Oct 2012 14:20:47 +0100 Subject: softirq: Split softirq locks -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The 3.x RT series removed the split softirq implementation in favour of pushing softirq processing into the context of the thread which diff --git a/debian/patches-rt/softirq-split-timer-softirqs-out-of-ksoftirqd.patch b/debian/patches-rt/softirq-split-timer-softirqs-out-of-ksoftirqd.patch index b1a028e9a..e01bcabe9 100644 --- a/debian/patches-rt/softirq-split-timer-softirqs-out-of-ksoftirqd.patch +++ b/debian/patches-rt/softirq-split-timer-softirqs-out-of-ksoftirqd.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 20 Jan 2016 16:34:17 +0100 Subject: softirq: split timer softirqs out of ksoftirqd -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The softirqd runs in -RT with SCHED_FIFO (prio 1) and deals mostly with timer wakeup which can not happen in hardirq context. The prio has been diff --git a/debian/patches-rt/spinlock-types-separate-raw.patch b/debian/patches-rt/spinlock-types-separate-raw.patch index b965227c3..227641ae3 100644 --- a/debian/patches-rt/spinlock-types-separate-raw.patch +++ b/debian/patches-rt/spinlock-types-separate-raw.patch @@ -1,7 +1,7 @@ Subject: spinlock: Split the lock types header From: Thomas Gleixner Date: Wed, 29 Jun 2011 19:34:01 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Split raw_spinlock into its own file and the remaining spinlock_t into its own non-RT header. The non-RT header will be replaced later by sleeping diff --git a/debian/patches-rt/squashfs-make-use-of-local-lock-in-multi_cpu-decompr.patch b/debian/patches-rt/squashfs-make-use-of-local-lock-in-multi_cpu-decompr.patch index c6916c585..48dd0c249 100644 --- a/debian/patches-rt/squashfs-make-use-of-local-lock-in-multi_cpu-decompr.patch +++ b/debian/patches-rt/squashfs-make-use-of-local-lock-in-multi_cpu-decompr.patch @@ -2,7 +2,7 @@ From: Julia Cartwright Date: Mon, 7 May 2018 08:58:57 -0500 Subject: [PATCH] squashfs: make use of local lock in multi_cpu decompressor -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Currently, the squashfs multi_cpu decompressor makes use of get_cpu_ptr()/put_cpu_ptr(), which unconditionally disable preemption diff --git a/debian/patches-rt/srcu-replace-local_irqsave-with-a-locallock.patch b/debian/patches-rt/srcu-replace-local_irqsave-with-a-locallock.patch index e9136f0d7..aee500155 100644 --- a/debian/patches-rt/srcu-replace-local_irqsave-with-a-locallock.patch +++ b/debian/patches-rt/srcu-replace-local_irqsave-with-a-locallock.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Thu, 12 Oct 2017 18:37:12 +0200 Subject: [PATCH] srcu: replace local_irqsave() with a locallock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz There are two instances which disable interrupts in order to become a stable this_cpu_ptr() pointer. The restore part is coupled with @@ -24,7 +24,7 @@ Signed-off-by: Sebastian Andrzej Siewior #include "rcu.h" #include "rcu_segcblist.h" -@@ -758,6 +759,8 @@ static void srcu_flip(struct srcu_struct +@@ -760,6 +761,8 @@ static void srcu_flip(struct srcu_struct * negligible when amoritized over that time period, and the extra latency * of a needlessly non-expedited grace period is similarly negligible. */ @@ -33,7 +33,7 @@ Signed-off-by: Sebastian Andrzej Siewior static bool srcu_might_be_idle(struct srcu_struct *sp) { unsigned long curseq; -@@ -766,13 +769,13 @@ static bool srcu_might_be_idle(struct sr +@@ -768,13 +771,13 @@ static bool srcu_might_be_idle(struct sr unsigned long t; /* If the local srcu_data structure has callbacks, not idle. */ @@ -50,7 +50,7 @@ Signed-off-by: Sebastian Andrzej Siewior /* * No local callbacks, so probabalistically probe global state. -@@ -850,7 +853,7 @@ void __call_srcu(struct srcu_struct *sp, +@@ -852,7 +855,7 @@ void __call_srcu(struct srcu_struct *sp, return; } rhp->func = func; @@ -59,7 +59,7 @@ Signed-off-by: Sebastian Andrzej Siewior sdp = this_cpu_ptr(sp->sda); spin_lock_rcu_node(sdp); rcu_segcblist_enqueue(&sdp->srcu_cblist, rhp, false); -@@ -866,7 +869,8 @@ void __call_srcu(struct srcu_struct *sp, +@@ -868,7 +871,8 @@ void __call_srcu(struct srcu_struct *sp, sdp->srcu_gp_seq_needed_exp = s; needexp = true; } diff --git a/debian/patches-rt/srcu-use-cpu_online-instead-custom-check.patch b/debian/patches-rt/srcu-use-cpu_online-instead-custom-check.patch index 392e14616..2432091e9 100644 --- a/debian/patches-rt/srcu-use-cpu_online-instead-custom-check.patch +++ b/debian/patches-rt/srcu-use-cpu_online-instead-custom-check.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 13 Sep 2017 14:43:41 +0200 Subject: [PATCH] srcu: use cpu_online() instead custom check -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The current check via srcu_online is slightly racy because after looking at srcu_online there could be an interrupt that interrupted us long @@ -28,7 +28,7 @@ Signed-off-by: Sebastian Andrzej Siewior #include "rcu.h" #include "rcu_segcblist.h" -@@ -459,21 +460,6 @@ static void srcu_gp_start(struct srcu_st +@@ -461,21 +462,6 @@ static void srcu_gp_start(struct srcu_st } /* @@ -50,7 +50,7 @@ Signed-off-by: Sebastian Andrzej Siewior * Place the workqueue handler on the specified CPU if online, otherwise * just run it whereever. This is useful for placing workqueue handlers * that are to invoke the specified CPU's callbacks. -@@ -484,12 +470,12 @@ static bool srcu_queue_delayed_work_on(i +@@ -486,12 +472,12 @@ static bool srcu_queue_delayed_work_on(i { bool ret; diff --git a/debian/patches-rt/sunrpc-make-svc_xprt_do_enqueue-use-get_cpu_light.patch b/debian/patches-rt/sunrpc-make-svc_xprt_do_enqueue-use-get_cpu_light.patch index ede690c40..19da84d08 100644 --- a/debian/patches-rt/sunrpc-make-svc_xprt_do_enqueue-use-get_cpu_light.patch +++ b/debian/patches-rt/sunrpc-make-svc_xprt_do_enqueue-use-get_cpu_light.patch @@ -1,7 +1,7 @@ From: Mike Galbraith Date: Wed, 18 Feb 2015 16:05:28 +0100 Subject: sunrpc: Make svc_xprt_do_enqueue() use get_cpu_light() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz |BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:915 |in_atomic(): 1, irqs_disabled(): 0, pid: 3194, name: rpc.nfsd diff --git a/debian/patches-rt/sysfs-realtime-entry.patch b/debian/patches-rt/sysfs-realtime-entry.patch index 629d88e3a..ff9a9d879 100644 --- a/debian/patches-rt/sysfs-realtime-entry.patch +++ b/debian/patches-rt/sysfs-realtime-entry.patch @@ -1,7 +1,7 @@ Subject: sysfs: Add /sys/kernel/realtime entry From: Clark Williams Date: Sat Jul 30 21:55:53 2011 -0500 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Add a /sys/kernel entry to indicate that the kernel is a realtime kernel. diff --git a/debian/patches-rt/tasklet-rt-prevent-tasklets-from-going-into-infinite-spin-in-rt.patch b/debian/patches-rt/tasklet-rt-prevent-tasklets-from-going-into-infinite-spin-in-rt.patch index 29a6331b6..24adce719 100644 --- a/debian/patches-rt/tasklet-rt-prevent-tasklets-from-going-into-infinite-spin-in-rt.patch +++ b/debian/patches-rt/tasklet-rt-prevent-tasklets-from-going-into-infinite-spin-in-rt.patch @@ -1,7 +1,7 @@ Subject: tasklet: Prevent tasklets from going into infinite spin in RT From: Ingo Molnar Date: Tue Nov 29 20:18:22 2011 -0500 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz When CONFIG_PREEMPT_RT_FULL is enabled, tasklets run as threads, and spinlocks turn are mutexes. But this can cause issues with diff --git a/debian/patches-rt/thermal-Defer-thermal-wakups-to-threads.patch b/debian/patches-rt/thermal-Defer-thermal-wakups-to-threads.patch index 92602b6c7..06f217492 100644 --- a/debian/patches-rt/thermal-Defer-thermal-wakups-to-threads.patch +++ b/debian/patches-rt/thermal-Defer-thermal-wakups-to-threads.patch @@ -1,7 +1,7 @@ From: Daniel Wagner Date: Tue, 17 Feb 2015 09:37:44 +0100 Subject: thermal: Defer thermal wakups to threads -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz On RT the spin lock in pkg_temp_thermal_platfrom_thermal_notify will call schedule while we run in irq context. diff --git a/debian/patches-rt/time-hrtimer-avoid-schedule_work-with-interrupts-dis.patch b/debian/patches-rt/time-hrtimer-avoid-schedule_work-with-interrupts-dis.patch index 7194ecec3..0b7bfe236 100644 --- a/debian/patches-rt/time-hrtimer-avoid-schedule_work-with-interrupts-dis.patch +++ b/debian/patches-rt/time-hrtimer-avoid-schedule_work-with-interrupts-dis.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Wed, 15 Nov 2017 17:29:51 +0100 Subject: [PATCH] time/hrtimer: avoid schedule_work() with interrupts disabled -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz The NOHZ code tries to schedule a workqueue with interrupts disabled. Since this does not work -RT I am switching it to swork instead. diff --git a/debian/patches-rt/timekeeping-split-jiffies-lock.patch b/debian/patches-rt/timekeeping-split-jiffies-lock.patch index d88169e0e..0fb7d3750 100644 --- a/debian/patches-rt/timekeeping-split-jiffies-lock.patch +++ b/debian/patches-rt/timekeeping-split-jiffies-lock.patch @@ -1,7 +1,7 @@ Subject: timekeeping: Split jiffies seqlock From: Thomas Gleixner Date: Thu, 14 Feb 2013 22:36:59 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Replace jiffies_lock seqlock with a simple seqcounter and a rawlock so it can be taken in atomic context on RT. diff --git a/debian/patches-rt/timers-prepare-for-full-preemption.patch b/debian/patches-rt/timers-prepare-for-full-preemption.patch index 7a1bf2781..885785aec 100644 --- a/debian/patches-rt/timers-prepare-for-full-preemption.patch +++ b/debian/patches-rt/timers-prepare-for-full-preemption.patch @@ -1,7 +1,7 @@ From: Ingo Molnar Date: Fri, 3 Jul 2009 08:29:34 -0500 Subject: timers: Prepare for full preemption -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz When softirqs can be preempted we need to make sure that cancelling the timer from the active thread can not deadlock vs. a running timer diff --git a/debian/patches-rt/tpm_tis-fix-stall-after-iowrite-s.patch b/debian/patches-rt/tpm_tis-fix-stall-after-iowrite-s.patch index b3227b5fb..26e858b79 100644 --- a/debian/patches-rt/tpm_tis-fix-stall-after-iowrite-s.patch +++ b/debian/patches-rt/tpm_tis-fix-stall-after-iowrite-s.patch @@ -1,7 +1,7 @@ From: Haris Okanovic Date: Tue, 15 Aug 2017 15:13:08 -0500 Subject: [PATCH] tpm_tis: fix stall after iowrite*()s -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz ioread8() operations to TPM MMIO addresses can stall the cpu when immediately following a sequence of iowrite*()'s to the same region. diff --git a/debian/patches-rt/tty-serial-8250-don-t-take-the-trylock-during-oops.patch b/debian/patches-rt/tty-serial-8250-don-t-take-the-trylock-during-oops.patch index ba37187f5..48cf4ccd4 100644 --- a/debian/patches-rt/tty-serial-8250-don-t-take-the-trylock-during-oops.patch +++ b/debian/patches-rt/tty-serial-8250-don-t-take-the-trylock-during-oops.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Mon, 11 Apr 2016 16:55:02 +0200 Subject: [PATCH] tty: serial: 8250: don't take the trylock during oops -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz An oops with irqs off (panic() from irqsafe hrtimer like the watchdog timer) will lead to a lockdep warning on each invocation and as such diff --git a/debian/patches-rt/tty-serial-pl011-warning-about-uninitialized.patch b/debian/patches-rt/tty-serial-pl011-warning-about-uninitialized.patch index 17feb8c3e..6795aa1a2 100644 --- a/debian/patches-rt/tty-serial-pl011-warning-about-uninitialized.patch +++ b/debian/patches-rt/tty-serial-pl011-warning-about-uninitialized.patch @@ -4,7 +4,7 @@ Subject: [PATCH] tty: serial: pl011: explicitly initialize the flags variable MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Silence the following gcc warning: diff --git a/debian/patches-rt/upstream-net-rt-remove-preemption-disabling-in-netif_rx.patch b/debian/patches-rt/upstream-net-rt-remove-preemption-disabling-in-netif_rx.patch index 8ae5e1e80..fb636f77a 100644 --- a/debian/patches-rt/upstream-net-rt-remove-preemption-disabling-in-netif_rx.patch +++ b/debian/patches-rt/upstream-net-rt-remove-preemption-disabling-in-netif_rx.patch @@ -1,7 +1,7 @@ Subject: net: Remove preemption disabling in netif_rx() From: Priyanka Jain Date: Thu, 17 May 2012 09:35:11 +0530 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz 1)enqueue_to_backlog() (called from netif_rx) should be bind to a particluar CPU. This can be achieved by diff --git a/debian/patches-rt/usb-do-not-disable-interrupts-in-giveback.patch b/debian/patches-rt/usb-do-not-disable-interrupts-in-giveback.patch index e72a34440..3d15273d1 100644 --- a/debian/patches-rt/usb-do-not-disable-interrupts-in-giveback.patch +++ b/debian/patches-rt/usb-do-not-disable-interrupts-in-giveback.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Fri, 8 Nov 2013 17:34:54 +0100 Subject: usb: do no disable interrupts in giveback -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Since commit 94dfd7ed ("USB: HCD: support giveback of URB in tasklet context") the USB code disables interrupts before invoking the complete diff --git a/debian/patches-rt/wait.h-include-atomic.h.patch b/debian/patches-rt/wait.h-include-atomic.h.patch index c94f183eb..eaf96a317 100644 --- a/debian/patches-rt/wait.h-include-atomic.h.patch +++ b/debian/patches-rt/wait.h-include-atomic.h.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Mon, 28 Oct 2013 12:19:57 +0100 Subject: wait.h: include atomic.h -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz | CC init/main.o |In file included from include/linux/mmzone.h:9:0, diff --git a/debian/patches-rt/watchdog-prevent-deferral-of-watchdogd-wakeup-on-RT.patch b/debian/patches-rt/watchdog-prevent-deferral-of-watchdogd-wakeup-on-RT.patch index 8431e856b..02e260b1b 100644 --- a/debian/patches-rt/watchdog-prevent-deferral-of-watchdogd-wakeup-on-RT.patch +++ b/debian/patches-rt/watchdog-prevent-deferral-of-watchdogd-wakeup-on-RT.patch @@ -1,7 +1,7 @@ From: Julia Cartwright Date: Fri, 28 Sep 2018 21:03:51 +0000 Subject: [PATCH] watchdog: prevent deferral of watchdogd wakeup on RT -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz When PREEMPT_RT_FULL is enabled, all hrtimer expiry functions are deferred for execution into the context of ktimersoftd unless otherwise diff --git a/debian/patches-rt/work-queue-work-around-irqsafe-timer-optimization.patch b/debian/patches-rt/work-queue-work-around-irqsafe-timer-optimization.patch index c8586ea97..e30f5dee8 100644 --- a/debian/patches-rt/work-queue-work-around-irqsafe-timer-optimization.patch +++ b/debian/patches-rt/work-queue-work-around-irqsafe-timer-optimization.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Mon, 01 Jul 2013 11:02:42 +0200 Subject: workqueue: Prevent workqueue versus ata-piix livelock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz An Intel i7 system regularly detected rcu_preempt stalls after the kernel was upgraded from 3.6-rt to 3.8-rt. When the stall happened, disk I/O was no diff --git a/debian/patches-rt/work-simple-Simple-work-queue-implemenation.patch b/debian/patches-rt/work-simple-Simple-work-queue-implemenation.patch index c2bacd67f..2ba90537f 100644 --- a/debian/patches-rt/work-simple-Simple-work-queue-implemenation.patch +++ b/debian/patches-rt/work-simple-Simple-work-queue-implemenation.patch @@ -1,7 +1,7 @@ From: Daniel Wagner Date: Fri, 11 Jul 2014 15:26:11 +0200 Subject: work-simple: Simple work queue implemenation -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Provides a framework for enqueuing callbacks from irq context PREEMPT_RT_FULL safe. The callbacks are executed in kthread context. diff --git a/debian/patches-rt/work-simple-drop-a-shit-statement-in-SWORK_EVENT_PEN.patch b/debian/patches-rt/work-simple-drop-a-shit-statement-in-SWORK_EVENT_PEN.patch index 8cb3ccf39..50754288f 100644 --- a/debian/patches-rt/work-simple-drop-a-shit-statement-in-SWORK_EVENT_PEN.patch +++ b/debian/patches-rt/work-simple-drop-a-shit-statement-in-SWORK_EVENT_PEN.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Mon, 10 Sep 2018 18:00:31 +0200 Subject: [PATCH] work-simple: drop a shit statement in SWORK_EVENT_PENDING -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Dan Carpenter reported | smatch warnings: diff --git a/debian/patches-rt/workqueue-distangle-from-rq-lock.patch b/debian/patches-rt/workqueue-distangle-from-rq-lock.patch index 2d8cb0d18..97112b635 100644 --- a/debian/patches-rt/workqueue-distangle-from-rq-lock.patch +++ b/debian/patches-rt/workqueue-distangle-from-rq-lock.patch @@ -22,7 +22,7 @@ Cc: Jens Axboe Cc: Linus Torvalds Link: http://lkml.kernel.org/r/20110622174919.135236139@linutronix.de Signed-off-by: Thomas Gleixner -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz [bigeasy: preempt_disable() around wq_worker_sleeping() by Daniel Bristot de Oliveira] diff --git a/debian/patches-rt/workqueue-prevent-deadlock-stall.patch b/debian/patches-rt/workqueue-prevent-deadlock-stall.patch index 91ef71bc5..4bf9fb148 100644 --- a/debian/patches-rt/workqueue-prevent-deadlock-stall.patch +++ b/debian/patches-rt/workqueue-prevent-deadlock-stall.patch @@ -1,7 +1,7 @@ Subject: workqueue: Prevent deadlock/stall on RT From: Thomas Gleixner Date: Fri, 27 Jun 2014 16:24:52 +0200 (CEST) -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Austin reported a XFS deadlock/stall on RT where scheduled work gets never exececuted and tasks are waiting for each other for ever. diff --git a/debian/patches-rt/workqueue-use-locallock.patch b/debian/patches-rt/workqueue-use-locallock.patch index 3042a6c5f..30b0103bf 100644 --- a/debian/patches-rt/workqueue-use-locallock.patch +++ b/debian/patches-rt/workqueue-use-locallock.patch @@ -1,7 +1,7 @@ Subject: workqueue: Use local irq lock instead of irq disable regions From: Thomas Gleixner Date: Sun, 17 Jul 2011 21:42:26 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Use a local_irq_lock as a replacement for irq off regions. We keep the semantic of irq-off in regard to the pool->lock and remain preemptible. diff --git a/debian/patches-rt/workqueue-use-rcu.patch b/debian/patches-rt/workqueue-use-rcu.patch index 3cec46312..fd4e457aa 100644 --- a/debian/patches-rt/workqueue-use-rcu.patch +++ b/debian/patches-rt/workqueue-use-rcu.patch @@ -1,7 +1,7 @@ Subject: workqueue: Use normal rcu From: Thomas Gleixner Date: Wed, 24 Jul 2013 15:26:54 +0200 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz There is no need for sched_rcu. The undocumented reason why sched_rcu is used is to avoid a few explicit rcu_read_lock()/unlock() pairs by diff --git a/debian/patches-rt/x86-crypto-reduce-preempt-disabled-regions.patch b/debian/patches-rt/x86-crypto-reduce-preempt-disabled-regions.patch index 4a06de565..48d4a0a78 100644 --- a/debian/patches-rt/x86-crypto-reduce-preempt-disabled-regions.patch +++ b/debian/patches-rt/x86-crypto-reduce-preempt-disabled-regions.patch @@ -1,7 +1,7 @@ Subject: x86: crypto: Reduce preempt disabled regions From: Peter Zijlstra Date: Mon, 14 Nov 2011 18:19:27 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Restrict the preempt disabled regions to the actual floating point operations and enable preemption for the administrative actions. diff --git a/debian/patches-rt/x86-efi-drop-task_lock-from-efi_switch_mm.patch b/debian/patches-rt/x86-efi-drop-task_lock-from-efi_switch_mm.patch index 786b69d15..e17c5324d 100644 --- a/debian/patches-rt/x86-efi-drop-task_lock-from-efi_switch_mm.patch +++ b/debian/patches-rt/x86-efi-drop-task_lock-from-efi_switch_mm.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Tue, 24 Jul 2018 14:48:55 +0200 Subject: [PATCH] x86/efi: drop task_lock() from efi_switch_mm() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz efi_switch_mm() is a wrapper around switch_mm() which saves current's ->active_mm, sets the requests mm as ->active_mm and invokes diff --git a/debian/patches-rt/x86-fpu-Disable-preemption-around-local_bh_disable.patch b/debian/patches-rt/x86-fpu-Disable-preemption-around-local_bh_disable.patch index f76c82693..b9bbc5f15 100644 --- a/debian/patches-rt/x86-fpu-Disable-preemption-around-local_bh_disable.patch +++ b/debian/patches-rt/x86-fpu-Disable-preemption-around-local_bh_disable.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Tue, 11 Dec 2018 15:10:33 +0100 Subject: [PATCH] x86/fpu: Disable preemption around local_bh_disable() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz __fpu__restore_sig() restores the content of the FPU state in the CPUs and in order to avoid concurency it disbles BH. On !RT it also disables diff --git a/debian/patches-rt/x86-highmem-add-a-already-used-pte-check.patch b/debian/patches-rt/x86-highmem-add-a-already-used-pte-check.patch index 761a36e91..5f6f82820 100644 --- a/debian/patches-rt/x86-highmem-add-a-already-used-pte-check.patch +++ b/debian/patches-rt/x86-highmem-add-a-already-used-pte-check.patch @@ -1,7 +1,7 @@ From: Sebastian Andrzej Siewior Date: Mon, 11 Mar 2013 17:09:55 +0100 Subject: x86/highmem: Add a "already used pte" check -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz This is a copy from kmap_atomic_prot(). diff --git a/debian/patches-rt/x86-ioapic-Don-t-let-setaffinity-unmask-threaded-EOI.patch b/debian/patches-rt/x86-ioapic-Don-t-let-setaffinity-unmask-threaded-EOI.patch index c76b232fe..e5f6eaf19 100644 --- a/debian/patches-rt/x86-ioapic-Don-t-let-setaffinity-unmask-threaded-EOI.patch +++ b/debian/patches-rt/x86-ioapic-Don-t-let-setaffinity-unmask-threaded-EOI.patch @@ -2,7 +2,7 @@ From: Thomas Gleixner Date: Tue, 17 Jul 2018 18:25:31 +0200 Subject: [PATCH] x86/ioapic: Don't let setaffinity unmask threaded EOI interrupt too early -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz There is an issue with threaded interrupts which are marked ONESHOT and using the fasteoi handler. diff --git a/debian/patches-rt/x86-kvm-require-const-tsc-for-rt.patch b/debian/patches-rt/x86-kvm-require-const-tsc-for-rt.patch index 49a5e92fe..36ff61b9b 100644 --- a/debian/patches-rt/x86-kvm-require-const-tsc-for-rt.patch +++ b/debian/patches-rt/x86-kvm-require-const-tsc-for-rt.patch @@ -1,7 +1,7 @@ Subject: x86: kvm Require const tsc for RT From: Thomas Gleixner Date: Sun, 06 Nov 2011 12:26:18 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Non constant TSC is a nightmare on bare metal already, but with virtualization it becomes a complete disaster because the workarounds diff --git a/debian/patches-rt/x86-mm-pat-disable-preemption-__split_large_page-aft.patch b/debian/patches-rt/x86-mm-pat-disable-preemption-__split_large_page-aft.patch index 9bf922116..bc505892b 100644 --- a/debian/patches-rt/x86-mm-pat-disable-preemption-__split_large_page-aft.patch +++ b/debian/patches-rt/x86-mm-pat-disable-preemption-__split_large_page-aft.patch @@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior Date: Tue, 11 Dec 2018 21:53:43 +0100 Subject: [PATCH] x86/mm/pat: disable preemption __split_large_page() after spin_lock() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Commit "x86/mm/pat: Disable preemption around __flush_tlb_all()" added a warning if __flush_tlb_all() is invoked in preemptible context. On !RT diff --git a/debian/patches-rt/x86-preempt-lazy.patch b/debian/patches-rt/x86-preempt-lazy.patch index e70b738a0..45c7ee510 100644 --- a/debian/patches-rt/x86-preempt-lazy.patch +++ b/debian/patches-rt/x86-preempt-lazy.patch @@ -1,7 +1,7 @@ Subject: x86: Support for lazy preemption From: Thomas Gleixner Date: Thu, 01 Nov 2012 11:03:47 +0100 -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Implement the x86 pieces for lazy preempt. diff --git a/debian/patches-rt/x86-signal-delay-calling-signals-on-32bit.patch b/debian/patches-rt/x86-signal-delay-calling-signals-on-32bit.patch index aea1c2305..cda9a0fa6 100644 --- a/debian/patches-rt/x86-signal-delay-calling-signals-on-32bit.patch +++ b/debian/patches-rt/x86-signal-delay-calling-signals-on-32bit.patch @@ -1,7 +1,7 @@ From: Yang Shi Date: Thu, 10 Dec 2015 10:58:51 -0800 Subject: x86/signal: delay calling signals on 32bit -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz When running some ptrace single step tests on x86-32 machine, the below problem is triggered: diff --git a/debian/patches-rt/x86-stackprot-no-random-on-rt.patch b/debian/patches-rt/x86-stackprot-no-random-on-rt.patch index 45733cdef..0715035e5 100644 --- a/debian/patches-rt/x86-stackprot-no-random-on-rt.patch +++ b/debian/patches-rt/x86-stackprot-no-random-on-rt.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Thu, 16 Dec 2010 14:25:18 +0100 Subject: x86: stackprotector: Avoid random pool on rt -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz CPU bringup calls into the random pool to initialize the stack canary. During boot that works nicely even on RT as the might sleep diff --git a/debian/patches-rt/x86-use-gen-rwsem-spinlocks-rt.patch b/debian/patches-rt/x86-use-gen-rwsem-spinlocks-rt.patch index ff829f9a4..fe7bd36b2 100644 --- a/debian/patches-rt/x86-use-gen-rwsem-spinlocks-rt.patch +++ b/debian/patches-rt/x86-use-gen-rwsem-spinlocks-rt.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner Date: Sun, 26 Jul 2009 02:21:32 +0200 Subject: x86: Use generic rwsem_spinlocks on -rt -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.13-rt10.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.15-rt12.tar.xz Simplifies the separation of anon_rw_semaphores and rw_semaphores for -rt.