[rt] Update to 4.18.16-rt9
* Note added/removed patches * Resolve conflicts with later changes in 4.18.y
This commit is contained in:
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561dac67f3
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@ -1223,6 +1223,9 @@ linux (4.18.20-1) UNRELEASED; urgency=medium
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[ Ben Hutchings ]
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* linux-perf: Fix BPF feature detection
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* [rt] Update to 4.18.16-rt9:
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- Revert "rcu: Use cpus_read_lock() while looking at cpu_online_mask"
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- EXP rcu: Revert expedited GP parallelization cleverness
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[ Romain Perier ]
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* [rt] Update to 4.18.12-rt7
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@ -1,7 +1,7 @@
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From: Alexandre Belloni <alexandre.belloni@bootlin.com>
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Date: Wed, 18 Apr 2018 12:51:38 +0200
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Subject: [PATCH 1/6] ARM: at91: add TCB registers definitions
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
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Add registers and bits definitions for the timer counter blocks found on
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Atmel ARM SoCs.
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@ -2,7 +2,7 @@ From: Peter Zijlstra <peterz@infradead.org>
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Date: Mon, 28 May 2018 15:24:20 +0200
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Subject: [PATCH 1/4] Split IRQ-off and zone->lock while freeing pages from PCP
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list #1
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
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Split the IRQ-off section while accessing the PCP list from zone->lock
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while freeing pages.
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@ -1,7 +1,7 @@
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From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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Date: Mon, 7 May 2018 16:51:09 +0200
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Subject: [PATCH] bdi: use refcount_t for reference counting instead atomic_t
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
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refcount_t type and corresponding API should be used instead of atomic_t when
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the variable is used as a reference counter. This allows to avoid accidental
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@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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Date: Tue, 3 Jul 2018 12:56:19 +0200
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Subject: [PATCH 1/4] mm/list_lru: use list_lru_walk_one() in
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list_lru_walk_node()
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
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list_lru_walk_node() invokes __list_lru_walk_one() with -1 as the
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memcg_idx parameter. The same can be achieved by list_lru_walk_one() and
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@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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Date: Fri, 22 Jun 2018 10:48:51 +0200
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Subject: [PATCH 1/3] mm: workingset: remove local_irq_disable() from
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count_shadow_nodes()
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
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In commit 0c7c1bed7e13 ("mm: make counting of list_lru_one::nr_items
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lockless") the
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@ -2,7 +2,7 @@ From: Peter Zijlstra <peterz@infradead.org>
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Date: Mon, 28 May 2018 15:24:21 +0200
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Subject: [PATCH 2/4] Split IRQ-off and zone->lock while freeing pages from PCP
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list #2
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
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Split the IRQ-off section while accessing the PCP list from zone->lock
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while freeing pages.
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@ -2,7 +2,7 @@ From: Alexandre Belloni <alexandre.belloni@bootlin.com>
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Date: Wed, 18 Apr 2018 12:51:39 +0200
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Subject: [PATCH 2/6] clocksource/drivers: Add a new driver for the Atmel ARM
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TC blocks
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
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Add a driver for the Atmel Timer Counter Blocks. This driver provides a
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clocksource and two clockevent devices.
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@ -2,7 +2,7 @@ From: Anna-Maria Gleixner <anna-maria@linutronix.de>
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Date: Fri, 4 May 2018 17:45:32 +0200
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Subject: [PATCH 2/3] drivers/md/raid5: Use irqsave variant of
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atomic_dec_and_lock()
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
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The irqsave variant of atomic_dec_and_lock handles irqsave/restore when
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taking/releasing the spin lock. With this variant the call of
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@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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Date: Tue, 3 Jul 2018 13:06:07 +0200
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Subject: [PATCH 2/4] mm/list_lru: Move locking from __list_lru_walk_one() to
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its caller
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
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Move the locking inside __list_lru_walk_one() to its caller. This is a
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preparation step in order to introduce list_lru_walk_one_irq() which
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@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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Date: Fri, 22 Jun 2018 11:43:35 +0200
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Subject: [PATCH 2/3] mm: workingset: make shadow_lru_isolate() use locking
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suffix
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
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shadow_lru_isolate() disables interrupts and acquires a lock. It could
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use spin_lock_irq() instead. It also uses local_irq_enable() while it
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@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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Date: Mon, 7 May 2018 17:09:42 +0200
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Subject: [PATCH] userns: use refcount_t for reference counting instead
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atomic_t
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
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refcount_t type and corresponding API should be used instead of atomic_t when
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the variable is used as a reference counter. This allows to avoid accidental
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@ -1,7 +1,7 @@
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From: Alexandre Belloni <alexandre.belloni@bootlin.com>
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Date: Wed, 18 Apr 2018 12:51:40 +0200
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Subject: [PATCH 3/6] clocksource/drivers: atmel-pit: make option silent
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
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To conform with the other option, make the ATMEL_PIT option silent so it
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can be selected from the platform
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@ -2,7 +2,7 @@ From: Anna-Maria Gleixner <anna-maria@linutronix.de>
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Date: Fri, 4 May 2018 17:45:33 +0200
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Subject: [PATCH 3/3] drivers/md/raid5: Do not disable irq on
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release_inactive_stripe_list() call
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
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There is no need to invoke release_inactive_stripe_list() with interrupts
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disabled. All call sites, except raid5_release_stripe(), unlock
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@ -1,7 +1,7 @@
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From: Thomas Gleixner <tglx@linutronix.de>
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Date: Mon, 28 May 2018 15:24:22 +0200
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Subject: [PATCH 3/4] mm/SLxB: change list_lock to raw_spinlock_t
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
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The list_lock is used with used with IRQs off on RT. Make it a raw_spinlock_t
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otherwise the interrupts won't be disabled on -RT. The locking rules remain
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@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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Date: Tue, 3 Jul 2018 13:08:56 +0200
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Subject: [PATCH 3/4] mm/list_lru: Pass struct list_lru_node as an argument
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__list_lru_walk_one()
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
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__list_lru_walk_one() is invoked with struct list_lru *lru, int nid as
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the first two argument. Those two are only used to retrieve struct
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@ -1,7 +1,7 @@
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From: Alexandre Belloni <alexandre.belloni@bootlin.com>
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Date: Wed, 18 Apr 2018 12:51:41 +0200
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Subject: [PATCH 4/6] ARM: at91: Implement clocksource selection
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
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Allow selecting and unselecting the PIT clocksource driver so it doesn't
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have to be compile when unused.
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@ -2,7 +2,7 @@ From: Thomas Gleixner <tglx@linutronix.de>
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Date: Thu, 21 Jun 2018 17:29:19 +0200
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Subject: [PATCH 4/4] mm/SLUB: delay giving back empty slubs to IRQ enabled
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regions
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
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__free_slab() is invoked with disabled interrupts which increases the
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irq-off time while __free_pages() is doing the work.
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@ -1,7 +1,7 @@
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From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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Date: Tue, 3 Jul 2018 13:17:27 +0200
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Subject: [PATCH 4/4] mm/list_lru: Introduce list_lru_shrink_walk_irq()
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
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Provide list_lru_shrink_walk_irq() and let it behave like
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list_lru_walk_one() except that it locks the spinlock with
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@ -1,7 +1,7 @@
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From: Alexandre Belloni <alexandre.belloni@bootlin.com>
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Date: Wed, 18 Apr 2018 12:51:42 +0200
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Subject: [PATCH 5/6] ARM: configs: at91: use new TCB timer driver
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
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Unselecting ATMEL_TCLIB switches the TCB timer driver from tcb_clksrc to
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timer-atmel-tcb.
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@ -1,7 +1,7 @@
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From: Anna-Maria Gleixner <anna-maria@linutronix.de>
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Date: Wed, 4 Apr 2018 11:43:56 +0200
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Subject: [PATCH] bdi: Use irqsave variant of refcount_dec_and_lock()
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
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The irqsave variant of refcount_dec_and_lock handles irqsave/restore when
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taking/releasing the spin lock. With this variant the call of
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@ -1,7 +1,7 @@
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From: Alexandre Belloni <alexandre.belloni@bootlin.com>
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Date: Wed, 18 Apr 2018 12:51:43 +0200
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Subject: [PATCH 6/6] ARM: configs: at91: unselect PIT
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
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The PIT is not required anymore to successfully boot and may actually harm
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in case preempt-rt is used because the PIT interrupt is shared.
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@ -1,7 +1,7 @@
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From: Anna-Maria Gleixner <anna-maria@linutronix.de>
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Date: Wed, 4 Apr 2018 11:43:57 +0200
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Subject: [PATCH] userns: Use irqsave variant of refcount_dec_and_lock()
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
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The irqsave variant of refcount_dec_and_lock handles irqsave/restore when
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taking/releasing the spin lock. With this variant the call of
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@ -1,7 +1,7 @@
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From: "Yadi.hu" <yadi.hu@windriver.com>
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Date: Wed, 10 Dec 2014 10:32:09 +0800
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Subject: ARM: enable irq in translation/section permission fault handlers
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
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Probably happens on all ARM, with
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CONFIG_PREEMPT_RT_FULL
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@ -4,7 +4,7 @@ Subject: [PATCH] Drivers: hv: vmbus: include header for get_irq_regs()
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
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On !RT the header file get_irq_regs() gets pulled in via other header files. On
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RT it does not and the build fails:
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45
debian/patches-rt/EXP-rcu-Revert-expedited-GP-parallelization-cleverne.patch
vendored
Normal file
45
debian/patches-rt/EXP-rcu-Revert-expedited-GP-parallelization-cleverne.patch
vendored
Normal file
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From 53d4eed5325b9a26985c3d4f017d94919eb4ac89 Mon Sep 17 00:00:00 2001
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From: Paul E. McKenney <paulmck@linux.ibm.com>
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Date: Mon, 29 Oct 2018 11:53:01 +0100
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Subject: [PATCH] EXP rcu: Revert expedited GP parallelization cleverness
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
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(Commit 258ba8e089db23f760139266c232f01bad73f85c from linux-rcu)
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This commit reverts a series of commits starting with fcc635436501 ("rcu:
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Make expedited GPs handle CPU 0 being offline") and its successors, thus
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queueing each rcu_node structure's expedited grace-period initialization
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work on the first CPU of that rcu_node structure.
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Suggested-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>
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Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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---
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kernel/rcu/tree_exp.h | 9 +--------
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1 file changed, 1 insertion(+), 8 deletions(-)
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--- a/kernel/rcu/tree_exp.h
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+++ b/kernel/rcu/tree_exp.h
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@@ -472,7 +472,6 @@ static void sync_rcu_exp_select_node_cpu
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static void sync_rcu_exp_select_cpus(struct rcu_state *rsp,
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smp_call_func_t func)
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{
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- int cpu;
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struct rcu_node *rnp;
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trace_rcu_exp_grace_period(rsp->name, rcu_exp_gp_seq_endval(rsp), TPS("reset"));
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@@ -493,13 +492,7 @@ static void sync_rcu_exp_select_cpus(str
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continue;
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}
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INIT_WORK(&rnp->rew.rew_work, sync_rcu_exp_select_node_cpus);
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- preempt_disable();
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- cpu = cpumask_next(rnp->grplo - 1, cpu_online_mask);
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- /* If all offline, queue the work on an unbound CPU. */
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- if (unlikely(cpu > rnp->grphi))
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- cpu = WORK_CPU_UNBOUND;
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- queue_work_on(cpu, rcu_par_gp_wq, &rnp->rew.rew_work);
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- preempt_enable();
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+ queue_work_on(rnp->grplo, rcu_par_gp_wq, &rnp->rew.rew_work);
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rnp->exp_need_flush = true;
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}
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@ -1,7 +1,7 @@
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From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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Date: Thu, 21 Mar 2013 19:01:05 +0100
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Subject: printk: Drop the logbuf_lock more often
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
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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.
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Josh Cartwright <joshc@ni.com>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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
|
||||
|
|
|
@ -5,7 +5,7 @@ Cc: Anna Schumaker <anna.schumaker@netapp.com>,
|
|||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
||||
Date: Thu, 12 Apr 2018 09:16:22 +0200
|
||||
Subject: [PATCH] [SCSI] libsas: remove irq save in sas_ata_qc_issue()
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
[ upstream commit 2da11d4262639dc0e2fabc6a70886db57af25c43 ]
|
||||
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
||||
Date: Thu, 12 Apr 2018 09:55:25 +0200
|
||||
Subject: [PATCH] [SCSI] qla2xxx: remove irq save in qla2x00_poll()
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
[ upstream commit b3a8aa90c46095cbad454eb068bfb5a8eb56d4e3 ]
|
||||
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
---
|
||||
include/linux/preempt.h | 23 ++++++++
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Anders Roxell <anders.roxell@linaro.org>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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,
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Frank Rowand <frank.rowand@am.sony.com>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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.
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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
|
||||
|
@ -13,6 +13,7 @@ stay on due to possible EFI callbacks so here I disable each algorithm.
|
|||
|
||||
Cc: stable-rt@vger.kernel.org
|
||||
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
||||
[bwh: Forward-ported to 4.18.20: CONFIG_CRYPTO_SPECK_NEON no longer exists]
|
||||
---
|
||||
arch/arm/Kconfig | 2 +-
|
||||
arch/arm64/crypto/Kconfig | 30 +++++++++++++++---------------
|
||||
|
@ -142,15 +143,6 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
|||
select CRYPTO_BLKCIPHER
|
||||
select CRYPTO_AES_ARM64_NEON_BLK
|
||||
select CRYPTO_AES_ARM64
|
||||
@@ -121,7 +121,7 @@ config CRYPTO_AES_ARM64_BS
|
||||
|
||||
config CRYPTO_SPECK_NEON
|
||||
tristate "NEON accelerated Speck cipher algorithms"
|
||||
- depends on KERNEL_MODE_NEON
|
||||
+ depends on KERNEL_MODE_NEON && !PREEMPT_RT_BASE
|
||||
select CRYPTO_BLKCIPHER
|
||||
select CRYPTO_SPECK
|
||||
|
||||
--- a/arch/arm64/crypto/crc32-ce-glue.c
|
||||
+++ b/arch/arm64/crypto/crc32-ce-glue.c
|
||||
@@ -208,7 +208,8 @@ static struct shash_alg crc32_pmull_algs
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
Subject: arm: Enable highmem for rt
|
||||
From: Thomas Gleixner <tglx@linutronix.de>
|
||||
Date: Wed, 13 Feb 2013 11:03:11 +0100
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
fixup highmem for ARM.
|
||||
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
This definition gets pulled in by other files. With the (later) split of
|
||||
RCU and spinlock.h it won't compile anymore.
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Yang Shi <yang.shi@linaro.org>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
When running kprobe on -rt kernel, the below bug is caught:
|
||||
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
Subject: arm: Add support for lazy preemption
|
||||
From: Thomas Gleixner <tglx@linutronix.de>
|
||||
Date: Wed, 31 Oct 2012 12:04:11 +0100
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
Implement the arm pieces for lazy preempt.
|
||||
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
Mostly unwind is done with irqs enabled however SLUB may call it with
|
||||
irqs disabled while creating a new SLUB cache.
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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().
|
||||
|
|
|
@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
|||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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.
|
||||
|
|
|
@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
|||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
The IPI runs in hardirq context and there are sleeping locks. This patch
|
||||
moves the completion into a workqueue.
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
preempt_disable() and get_cpu() don't play well together with the sleeping
|
||||
locks it tries to allocate later.
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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().
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
Subject: block: Use cpu_chill() for retry loops
|
||||
From: Thomas Gleixner <tglx@linutronix.de>
|
||||
Date: Thu, 20 Dec 2012 18:28:26 +0100
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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
|
||||
|
|
|
@ -2,7 +2,7 @@ From: "Steven Rostedt (VMware)" <rostedt@goodmis.org>
|
|||
Date: Mon, 9 Jul 2018 17:48:54 -0400
|
||||
Subject: [PATCH] cgroup/tracing: Move taking of spin lock out of trace event
|
||||
handlers
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
[ Upstream commit e4f8d81c738db6d3ffdabfb8329aa2feaa310699 ]
|
||||
|
||||
|
@ -240,7 +240,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
|||
|
||||
return ret;
|
||||
}
|
||||
@@ -4634,7 +4637,7 @@ static void css_release_work_fn(struct w
|
||||
@@ -4641,7 +4644,7 @@ static void css_release_work_fn(struct w
|
||||
struct cgroup *tcgrp;
|
||||
|
||||
/* cgroup release path */
|
||||
|
@ -249,7 +249,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
|||
|
||||
if (cgroup_on_dfl(cgrp))
|
||||
cgroup_rstat_flush(cgrp);
|
||||
@@ -4977,7 +4980,7 @@ int cgroup_mkdir(struct kernfs_node *par
|
||||
@@ -4984,7 +4987,7 @@ int cgroup_mkdir(struct kernfs_node *par
|
||||
if (ret)
|
||||
goto out_destroy;
|
||||
|
||||
|
@ -258,7 +258,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
|||
|
||||
/* let's create and online css's */
|
||||
kernfs_activate(kn);
|
||||
@@ -5165,9 +5168,8 @@ int cgroup_rmdir(struct kernfs_node *kn)
|
||||
@@ -5172,9 +5175,8 @@ int cgroup_rmdir(struct kernfs_node *kn)
|
||||
return 0;
|
||||
|
||||
ret = cgroup_destroy_locked(cgrp);
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
All callers of cgroup_rstat_flush_locked() acquire cgroup_rstat_lock
|
||||
either with spin_lock_irq() or spin_lock_irqsave().
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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 <bigeasy@linutronix.de>
|
|||
/*
|
||||
--- a/kernel/cgroup/cgroup.c
|
||||
+++ b/kernel/cgroup/cgroup.c
|
||||
@@ -4611,10 +4611,10 @@ static void css_free_rwork_fn(struct wor
|
||||
@@ -4618,10 +4618,10 @@ static void css_free_rwork_fn(struct wor
|
||||
}
|
||||
}
|
||||
|
||||
|
@ -66,7 +66,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
|||
struct cgroup_subsys *ss = css->ss;
|
||||
struct cgroup *cgrp = css->cgroup;
|
||||
|
||||
@@ -4674,8 +4674,8 @@ static void css_release(struct percpu_re
|
||||
@@ -4681,8 +4681,8 @@ 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 <bigeasy@linutronix.de>
|
|||
}
|
||||
|
||||
static void init_and_link_css(struct cgroup_subsys_state *css,
|
||||
@@ -5397,6 +5397,7 @@ static int __init cgroup_wq_init(void)
|
||||
@@ -5404,6 +5404,7 @@ static int __init cgroup_wq_init(void)
|
||||
*/
|
||||
cgroup_destroy_wq = alloc_workqueue("cgroup_destroy", 0, 1);
|
||||
BUG_ON(!cgroup_destroy_wq);
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Benedikt Spranger <b.spranger@linutronix.de>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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.
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
Subject: completion: Use simple wait queues
|
||||
From: Thomas Gleixner <tglx@linutronix.de>
|
||||
Date: Fri, 11 Jan 2013 11:23:51 +0100
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
Completions have no long lasting callbacks and therefor do not need
|
||||
the complex waitqueue variant. Use simple waitqueues which reduces the
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
Subject: sched: Use the proper LOCK_OFFSET for cond_resched()
|
||||
From: Thomas Gleixner <tglx@linutronix.de>
|
||||
Date: Sun, 17 Jul 2011 22:51:33 +0200
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
RT does not increment preempt count when a 'sleeping' spinlock is
|
||||
locked. Update PREEMPT_LOCK_OFFSET for that case.
|
||||
|
|
|
@ -2,7 +2,7 @@ From: Mike Galbraith <umgwanakikbuti@gmail.com>
|
|||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
Subject: cpu/hotplug: Implement CPU pinning
|
||||
From: Thomas Gleixner <tglx@linutronix.de>
|
||||
Date: Wed, 19 Jul 2017 17:31:20 +0200
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
|
||||
---
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
Ralf posted a picture of a backtrace from
|
||||
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
Subject: cpumask: Disable CONFIG_CPUMASK_OFFSTACK for RT
|
||||
From: Thomas Gleixner <tglx@linutronix.de>
|
||||
Date: Wed, 14 Dec 2011 01:03:49 +0100
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
There are "valid" GFP_ATOMIC allocations such as
|
||||
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Mike Galbraith <efault@gmx.de>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
The two commits below add up to a cpuset might_sleep() splat for RT:
|
||||
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
Don Estabrook reported
|
||||
| kernel: WARNING: CPU: 2 PID: 858 at kernel/sched/core.c:2428 migrate_disable+0xed/0x100()
|
||||
|
|
|
@ -2,7 +2,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
|||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
cryptd has a per-CPU lock which protected with local_bh_disable() and
|
||||
preempt_disable().
|
||||
|
|
|
@ -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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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
|
||||
|
|
|
@ -2,7 +2,7 @@ From: Mike Galbraith <efault@gmx.de>
|
|||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
Subject: debugobjects: Make RT aware
|
||||
From: Thomas Gleixner <tglx@linutronix.de>
|
||||
Date: Sun, 17 Jul 2011 21:41:35 +0200
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
Avoid filling the pool / allocating memory with irqs off().
|
||||
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
In commit 052189a2ec95 ("dm: remove superfluous irq disablement in
|
||||
dm_request_fn") the spin_lock_irq() was replaced with spin_lock() + a
|
||||
|
|
|
@ -2,7 +2,7 @@ From: Mike Galbraith <umgwanakikbuti@gmail.com>
|
|||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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.
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
Subject: tty/serial/omap: Make the locking RT aware
|
||||
From: Thomas Gleixner <tglx@linutronix.de>
|
||||
Date: Thu, 28 Jul 2011 13:32:57 +0200
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
Subject: tty/serial/pl011: Make the locking work on RT
|
||||
From: Thomas Gleixner <tglx@linutronix.de>
|
||||
Date: Tue, 08 Jan 2013 21:36:51 +0100
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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.
|
||||
|
|
|
@ -2,7 +2,7 @@ From: Mike Galbraith <umgwanakikbuti@gmail.com>
|
|||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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
|
||||
|
|
|
@ -2,7 +2,7 @@ From: Mike Galbraith <efault@gmx.de>
|
|||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
Use get_local_ptr() instead this_cpu_ptr() to avoid a warning regarding
|
||||
smp_processor_id() in preemptible code.
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
Subject: drm,i915: Use local_lock/unlock_irq() in intel_pipe_update_start/end()
|
||||
From: Mike Galbraith <umgwanakikbuti@gmail.com>
|
||||
Date: Sat, 27 Feb 2016 09:01:42 +0100
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
|
||||
[ 8.014039] BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:918
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
Subject: drm,radeon,i915: Use preempt_disable/enable_rt() where recommended
|
||||
From: Mike Galbraith <umgwanakikbuti@gmail.com>
|
||||
Date: Sat, 27 Feb 2016 08:09:11 +0100
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
DRM folks identified the spots, so use them.
|
||||
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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.
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
Based on meassurements the EFI functions get_variable /
|
||||
get_next_variable take up to 2us which looks okay.
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
Subject: fs/epoll: Do not disable preemption on RT
|
||||
From: Thomas Gleixner <tglx@linutronix.de>
|
||||
Date: Fri, 08 Jul 2011 16:35:35 +0200
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
Subject: fs: dcache: Use cpu_chill() in trylock loops
|
||||
From: Thomas Gleixner <tglx@linutronix.de>
|
||||
Date: Wed, 07 Mar 2012 21:00:34 +0100
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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.
|
||||
|
@ -152,7 +152,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
|||
spin_lock(&dentry->d_lock);
|
||||
--- a/fs/proc/base.c
|
||||
+++ b/fs/proc/base.c
|
||||
@@ -1864,7 +1864,7 @@ bool proc_fill_cache(struct file *file,
|
||||
@@ -1878,7 +1878,7 @@ bool proc_fill_cache(struct file *file,
|
||||
|
||||
child = d_hash_and_lookup(dir, &qname);
|
||||
if (!child) {
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Thomas Gleixner <tglx@linutronix.de>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
bit_spin_locks break under RT.
|
||||
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Thomas Gleixner <tglx@linutronix.de>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
Wrap the bit_spin_lock calls into a separate inline and add the RT
|
||||
replacements with a real spinlock.
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Clark Williams <williams@redhat.com>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Mike Galbraith <umgwanakikbuti@gmail.com>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
Line up helper arrows to the right column.
|
||||
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Thomas Gleixner <tglx@linutronix.de>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
|
||||
---
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Thomas Gleixner <tglx@linutronix.de>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
In exit_pi_state_list() we have the following locking construct:
|
||||
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Steven Rostedt <rostedt@goodmis.org>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
Requeue with timeout causes a bug with PREEMPT_RT_FULL.
|
||||
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Thomas Gleixner <tglx@linutronix.de>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Ingo Molnar <mingo@elte.hu>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
Creates long latencies for no value
|
||||
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
Joe Korty reported, that __irq_set_affinity_locked() schedules a
|
||||
workqueue while holding a rawlock which results in a might_sleep()
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
Subject: genirq: Force interrupt thread on RT
|
||||
From: Thomas Gleixner <tglx@linutronix.de>
|
||||
Date: Sun, 03 Apr 2011 11:57:29 +0200
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
Force threaded_irqs and optimize the code (force_irqthreads) in regard
|
||||
to this.
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Josh Cartwright <joshc@ni.com>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
Subject: hotplug: Lightweight get online cpus
|
||||
From: Thomas Gleixner <tglx@linutronix.de>
|
||||
Date: Wed, 15 Jun 2011 12:36:06 +0200
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
get_online_cpus() is a heavy weight function which involves a global
|
||||
mutex. migrate_disable() wants a simpler construct which prevents only
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Yang Shi <yang.shi@windriver.com>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
When run ltp leapsec_timer test, the following call trace is caught:
|
||||
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.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.
|
||||
|
@ -28,7 +28,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
|||
|
||||
--- a/arch/x86/kvm/lapic.c
|
||||
+++ b/arch/x86/kvm/lapic.c
|
||||
@@ -2176,7 +2176,7 @@ int kvm_create_lapic(struct kvm_vcpu *vc
|
||||
@@ -2192,7 +2192,7 @@ int kvm_create_lapic(struct kvm_vcpu *vc
|
||||
apic->vcpu = vcpu;
|
||||
|
||||
hrtimer_init(&apic->lapic_timer.timer, CLOCK_MONOTONIC,
|
||||
|
@ -61,7 +61,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
|||
/*
|
||||
--- a/kernel/events/core.c
|
||||
+++ b/kernel/events/core.c
|
||||
@@ -1102,7 +1102,7 @@ static void __perf_mux_hrtimer_init(stru
|
||||
@@ -1107,7 +1107,7 @@ static void __perf_mux_hrtimer_init(stru
|
||||
cpuctx->hrtimer_interval = ns_to_ktime(NSEC_PER_MSEC * interval);
|
||||
|
||||
raw_spin_lock_init(&cpuctx->hrtimer_lock);
|
||||
|
@ -70,7 +70,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
|||
timer->function = perf_mux_hrtimer_handler;
|
||||
}
|
||||
|
||||
@@ -9170,7 +9170,7 @@ static void perf_swevent_init_hrtimer(st
|
||||
@@ -9183,7 +9183,7 @@ static void perf_swevent_init_hrtimer(st
|
||||
if (!is_sampling_event(event))
|
||||
return;
|
||||
|
||||
|
@ -103,7 +103,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
|||
|
||||
--- a/kernel/sched/fair.c
|
||||
+++ b/kernel/sched/fair.c
|
||||
@@ -5184,9 +5184,9 @@ void init_cfs_bandwidth(struct cfs_bandw
|
||||
@@ -5199,9 +5199,9 @@ void init_cfs_bandwidth(struct cfs_bandw
|
||||
cfs_b->period = ns_to_ktime(default_cfs_period());
|
||||
|
||||
INIT_LIST_HEAD(&cfs_b->throttled_cfs_rq);
|
||||
|
@ -113,8 +113,8 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
|||
- hrtimer_init(&cfs_b->slack_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
|
||||
+ hrtimer_init(&cfs_b->slack_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL_HARD);
|
||||
cfs_b->slack_timer.function = sched_cfs_slack_timer;
|
||||
cfs_b->distribute_running = 0;
|
||||
}
|
||||
|
||||
--- a/kernel/sched/rt.c
|
||||
+++ b/kernel/sched/rt.c
|
||||
@@ -43,8 +43,8 @@ void init_rt_bandwidth(struct rt_bandwid
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
||||
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/4.18/older/patches-4.18.12-rt7.tar.xz
|
||||
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.16-rt9.tar.xz
|
||||
|
||||
hrtimer_init_sleeper() calls require a prior initialisation of the
|
||||
hrtimer object with hrtimer_init(). Lets make the initialisation of
|
||||
|
|
Some files were not shown because too many files have changed in this diff Show More
Loading…
Reference in New Issue