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[rt] Update to 3.12.5-rt7 

svn path=/dists/sid/linux/; revision=20906
This commit is contained in:
Ben Hutchings 2013-12-21 01:39:20 +00:00
parent 0a09a09a42
commit d7b5ce3749
295 changed files with 1235 additions and 542 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
debian/changelog vendored
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@ -98,6 +98,14 @@ linux (3.12.6-1) UNRELEASED; urgency=medium
* Set ABI to 1
* [ia64] Enable PSTORE, EFI_VARS_PSTORE
* [x86,ia64] udeb: Remove zlib-modules as zlib is now built-in
* [rt] Update to 3.12.5-rt7:
- ptrace: fix ptrace vs tasklist_lock race
- migrate_disable pushd down in atomic_dec_and_spin_lock
- migrate_disable pushd down in rt_spin_trylock_irqsave
- migrate_disable pushd down in rt_write_trylock_irqsave
- Revert "sched/rt: Fix wait_task_interactive() to test rt_spin_lock state"
- seqlock: consolidate spin_lock/unlock waiting with spin_unlock_wait
- softirq: make migrate disable/enable conditioned on softirq_nestcnt
[ Ian Campbell ]
* [armel/kirkwood+orion] Reenable MARVELL_PHY (Closes: #723177)

29
debian/patches/features/all/rt/0001-sparc64-use-generic-rwsem-spinlocks-rt.patch vendored Normal file
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@ -0,0 +1,29 @@
From d6a6675d436897cd1b09e299436df3499abd753e Mon Sep 17 00:00:00 2001
From: Allen Pais <allen.pais@oracle.com>
Date: Fri, 13 Dec 2013 09:44:41 +0530
Subject: [PATCH 1/3] sparc64: use generic rwsem spinlocks rt
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Signed-off-by: Allen Pais <allen.pais@oracle.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
arch/sparc/Kconfig | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -177,12 +177,10 @@ config NR_CPUS
source kernel/Kconfig.hz
config RWSEM_GENERIC_SPINLOCK
- bool
- default y if SPARC32
+ def_bool PREEMPT_RT_FULL
config RWSEM_XCHGADD_ALGORITHM
- bool
- default y if SPARC64
+ def_bool !RWSEM_GENERIC_SPINLOCK && !PREEMPT_RT_FULL
config GENERIC_HWEIGHT
bool

2
debian/patches/features/all/rt/0002-kernel-SRCU-provide-a-static-initializer.patch vendored
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@ -1,7 +1,7 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Tue, 19 Mar 2013 14:44:30 +0100
Subject: [PATCH] kernel/SRCU: provide a static initializer
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
There are macros for static initializer for the three out of four
possible notifier types, that are:

189
debian/patches/features/all/rt/0002-sparc64-convert-spinlock_t-to-raw_spinlock_t-in-mmu_.patch vendored Normal file
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@ -0,0 +1,189 @@
From d4b3d2991e6a0e45cc82a72c12ac7acbb27929ce Mon Sep 17 00:00:00 2001
From: Allen Pais <allen.pais@oracle.com>
Date: Fri, 13 Dec 2013 09:44:42 +0530
Subject: [PATCH 2/3] sparc64: convert spinlock_t to raw_spinlock_t in
mmu_context_t
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Issue debugged by Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Allen Pais <allen.pais@oracle.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
arch/sparc/Kconfig | 1 +
arch/sparc/include/asm/mmu_64.h | 2 +-
arch/sparc/include/asm/mmu_context_64.h | 8 ++++----
arch/sparc/kernel/smp_64.c | 4 ++--
arch/sparc/mm/init_64.c | 4 ++--
arch/sparc/mm/tsb.c | 16 ++++++++--------
6 files changed, 18 insertions(+), 17 deletions(-)
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -26,6 +26,7 @@ config SPARC
select HAVE_DMA_ATTRS
select HAVE_DMA_API_DEBUG
select HAVE_ARCH_JUMP_LABEL
+ select IRQ_FORCED_THREADING
select GENERIC_IRQ_SHOW
select ARCH_WANT_IPC_PARSE_VERSION
select USE_GENERIC_SMP_HELPERS if SMP
--- a/arch/sparc/include/asm/mmu_64.h
+++ b/arch/sparc/include/asm/mmu_64.h
@@ -90,7 +90,7 @@ struct tsb_config {
#endif
typedef struct {
- spinlock_t lock;
+ raw_spinlock_t lock;
unsigned long sparc64_ctx_val;
unsigned long huge_pte_count;
struct page *pgtable_page;
--- a/arch/sparc/include/asm/mmu_context_64.h
+++ b/arch/sparc/include/asm/mmu_context_64.h
@@ -77,7 +77,7 @@ static inline void switch_mm(struct mm_s
if (unlikely(mm == &init_mm))
return;
- spin_lock_irqsave(&mm->context.lock, flags);
+ raw_spin_lock_irqsave(&mm->context.lock, flags);
ctx_valid = CTX_VALID(mm->context);
if (!ctx_valid)
get_new_mmu_context(mm);
@@ -125,7 +125,7 @@ static inline void switch_mm(struct mm_s
__flush_tlb_mm(CTX_HWBITS(mm->context),
SECONDARY_CONTEXT);
}
- spin_unlock_irqrestore(&mm->context.lock, flags);
+ raw_spin_unlock_irqrestore(&mm->context.lock, flags);
}
#define deactivate_mm(tsk,mm) do { } while (0)
@@ -136,7 +136,7 @@ static inline void activate_mm(struct mm
unsigned long flags;
int cpu;
- spin_lock_irqsave(&mm->context.lock, flags);
+ raw_spin_lock_irqsave(&mm->context.lock, flags);
if (!CTX_VALID(mm->context))
get_new_mmu_context(mm);
cpu = smp_processor_id();
@@ -146,7 +146,7 @@ static inline void activate_mm(struct mm
load_secondary_context(mm);
__flush_tlb_mm(CTX_HWBITS(mm->context), SECONDARY_CONTEXT);
tsb_context_switch(mm);
- spin_unlock_irqrestore(&mm->context.lock, flags);
+ raw_spin_unlock_irqrestore(&mm->context.lock, flags);
}
#endif /* !(__ASSEMBLY__) */
--- a/arch/sparc/kernel/smp_64.c
+++ b/arch/sparc/kernel/smp_64.c
@@ -976,12 +976,12 @@ void __irq_entry smp_new_mmu_context_ver
if (unlikely(!mm || (mm == &init_mm)))
return;
- spin_lock_irqsave(&mm->context.lock, flags);
+ raw_spin_lock_irqsave(&mm->context.lock, flags);
if (unlikely(!CTX_VALID(mm->context)))
get_new_mmu_context(mm);
- spin_unlock_irqrestore(&mm->context.lock, flags);
+ raw_spin_unlock_irqrestore(&mm->context.lock, flags);
load_secondary_context(mm);
__flush_tlb_mm(CTX_HWBITS(mm->context),
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -350,7 +350,7 @@ void update_mmu_cache(struct vm_area_str
mm = vma->vm_mm;
- spin_lock_irqsave(&mm->context.lock, flags);
+ raw_spin_lock_irqsave(&mm->context.lock, flags);
#if defined(CONFIG_HUGETLB_PAGE) || defined(CONFIG_TRANSPARENT_HUGEPAGE)
if (mm->context.huge_pte_count && is_hugetlb_pte(pte))
@@ -361,7 +361,7 @@ void update_mmu_cache(struct vm_area_str
__update_mmu_tsb_insert(mm, MM_TSB_BASE, PAGE_SHIFT,
address, pte_val(pte));
- spin_unlock_irqrestore(&mm->context.lock, flags);
+ raw_spin_unlock_irqrestore(&mm->context.lock, flags);
}
void flush_dcache_page(struct page *page)
--- a/arch/sparc/mm/tsb.c
+++ b/arch/sparc/mm/tsb.c
@@ -73,7 +73,7 @@ void flush_tsb_user(struct tlb_batch *tb
struct mm_struct *mm = tb->mm;
unsigned long nentries, base, flags;
- spin_lock_irqsave(&mm->context.lock, flags);
+ raw_spin_lock_irqsave(&mm->context.lock, flags);
base = (unsigned long) mm->context.tsb_block[MM_TSB_BASE].tsb;
nentries = mm->context.tsb_block[MM_TSB_BASE].tsb_nentries;
@@ -90,14 +90,14 @@ void flush_tsb_user(struct tlb_batch *tb
__flush_tsb_one(tb, HPAGE_SHIFT, base, nentries);
}
#endif
- spin_unlock_irqrestore(&mm->context.lock, flags);
+ raw_spin_unlock_irqrestore(&mm->context.lock, flags);
}
void flush_tsb_user_page(struct mm_struct *mm, unsigned long vaddr)
{
unsigned long nentries, base, flags;
- spin_lock_irqsave(&mm->context.lock, flags);
+ raw_spin_lock_irqsave(&mm->context.lock, flags);
base = (unsigned long) mm->context.tsb_block[MM_TSB_BASE].tsb;
nentries = mm->context.tsb_block[MM_TSB_BASE].tsb_nentries;
@@ -114,7 +114,7 @@ void flush_tsb_user_page(struct mm_struc
__flush_tsb_one_entry(base, vaddr, HPAGE_SHIFT, nentries);
}
#endif
- spin_unlock_irqrestore(&mm->context.lock, flags);
+ raw_spin_unlock_irqrestore(&mm->context.lock, flags);
}
#define HV_PGSZ_IDX_BASE HV_PGSZ_IDX_8K
@@ -392,7 +392,7 @@ void tsb_grow(struct mm_struct *mm, unsi
* the lock and ask all other cpus running this address space
* to run tsb_context_switch() to see the new TSB table.
*/
- spin_lock_irqsave(&mm->context.lock, flags);
+ raw_spin_lock_irqsave(&mm->context.lock, flags);
old_tsb = mm->context.tsb_block[tsb_index].tsb;
old_cache_index =
@@ -407,7 +407,7 @@ void tsb_grow(struct mm_struct *mm, unsi
*/
if (unlikely(old_tsb &&
(rss < mm->context.tsb_block[tsb_index].tsb_rss_limit))) {
- spin_unlock_irqrestore(&mm->context.lock, flags);
+ raw_spin_unlock_irqrestore(&mm->context.lock, flags);
kmem_cache_free(tsb_caches[new_cache_index], new_tsb);
return;
@@ -433,7 +433,7 @@ void tsb_grow(struct mm_struct *mm, unsi
mm->context.tsb_block[tsb_index].tsb = new_tsb;
setup_tsb_params(mm, tsb_index, new_size);
- spin_unlock_irqrestore(&mm->context.lock, flags);
+ raw_spin_unlock_irqrestore(&mm->context.lock, flags);
/* If old_tsb is NULL, we're being invoked for the first time
* from init_new_context().
@@ -459,7 +459,7 @@ int init_new_context(struct task_struct
#endif
unsigned int i;
- spin_lock_init(&mm->context.lock);
+ raw_spin_lock_init(&mm->context.lock);
mm->context.sparc64_ctx_val = 0UL;

2
debian/patches/features/all/rt/0002-x86-highmem-add-a-already-used-pte-check.patch vendored
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@ -2,7 +2,7 @@ From 65513f34449eedb6b84c24a3583266534c1627e4 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Mon, 11 Mar 2013 17:09:55 +0100
Subject: [PATCH 2/6] x86/highmem: add a "already used pte" check
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
This is a copy from kmap_atomic_prot().

2
debian/patches/features/all/rt/0003-arm-highmem-flush-tlb-on-unmap.patch vendored
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@ -2,7 +2,7 @@ From e2ca4d092d9c6e6b07b465b4d81da207bbcc7437 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Mon, 11 Mar 2013 21:37:27 +0100
Subject: [PATCH 3/6] arm/highmem: flush tlb on unmap
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.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

89
debian/patches/features/all/rt/0003-sparc64-convert-ctx_alloc_lock-raw_spinlock_t.patch vendored Normal file
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@ -0,0 +1,89 @@
From 9c6692963c4b96a40852c7ac28e8bd7d2a421821 Mon Sep 17 00:00:00 2001
From: Allen Pais <allen.pais@oracle.com>
Date: Fri, 13 Dec 2013 09:44:43 +0530
Subject: [PATCH 3/3] sparc64: convert ctx_alloc_lock raw_spinlock_t
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Signed-off-by: Allen Pais <allen.pais@oracle.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
arch/sparc/include/asm/mmu_context_64.h | 2 +-
arch/sparc/mm/init_64.c | 10 +++++-----
arch/sparc/mm/tsb.c | 4 ++--
3 files changed, 8 insertions(+), 8 deletions(-)
--- a/arch/sparc/include/asm/mmu_context_64.h
+++ b/arch/sparc/include/asm/mmu_context_64.h
@@ -13,7 +13,7 @@ static inline void enter_lazy_tlb(struct
{
}
-extern spinlock_t ctx_alloc_lock;
+extern raw_spinlock_t ctx_alloc_lock;
extern unsigned long tlb_context_cache;
extern unsigned long mmu_context_bmap[];
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -661,7 +661,7 @@ void __flush_dcache_range(unsigned long
EXPORT_SYMBOL(__flush_dcache_range);
/* get_new_mmu_context() uses "cache + 1". */
-DEFINE_SPINLOCK(ctx_alloc_lock);
+DEFINE_RAW_SPINLOCK(ctx_alloc_lock);
unsigned long tlb_context_cache = CTX_FIRST_VERSION - 1;
#define MAX_CTX_NR (1UL << CTX_NR_BITS)
#define CTX_BMAP_SLOTS BITS_TO_LONGS(MAX_CTX_NR)
@@ -683,7 +683,7 @@ void get_new_mmu_context(struct mm_struc
unsigned long orig_pgsz_bits;
int new_version;
- spin_lock(&ctx_alloc_lock);
+ raw_spin_lock(&ctx_alloc_lock);
orig_pgsz_bits = (mm->context.sparc64_ctx_val & CTX_PGSZ_MASK);
ctx = (tlb_context_cache + 1) & CTX_NR_MASK;
new_ctx = find_next_zero_bit(mmu_context_bmap, 1 << CTX_NR_BITS, ctx);
@@ -719,7 +719,7 @@ void get_new_mmu_context(struct mm_struc
out:
tlb_context_cache = new_ctx;
mm->context.sparc64_ctx_val = new_ctx | orig_pgsz_bits;
- spin_unlock(&ctx_alloc_lock);
+ raw_spin_unlock(&ctx_alloc_lock);
if (unlikely(new_version))
smp_new_mmu_context_version();
@@ -2721,7 +2721,7 @@ void hugetlb_setup(struct pt_regs *regs)
if (tlb_type == cheetah_plus) {
unsigned long ctx;
- spin_lock(&ctx_alloc_lock);
+ raw_spin_lock(&ctx_alloc_lock);
ctx = mm->context.sparc64_ctx_val;
ctx &= ~CTX_PGSZ_MASK;
ctx |= CTX_PGSZ_BASE << CTX_PGSZ0_SHIFT;
@@ -2742,7 +2742,7 @@ void hugetlb_setup(struct pt_regs *regs)
mm->context.sparc64_ctx_val = ctx;
on_each_cpu(context_reload, mm, 0);
}
- spin_unlock(&ctx_alloc_lock);
+ raw_spin_unlock(&ctx_alloc_lock);
}
}
#endif
--- a/arch/sparc/mm/tsb.c
+++ b/arch/sparc/mm/tsb.c
@@ -523,12 +523,12 @@ void destroy_context(struct mm_struct *m
free_hot_cold_page(page, 0);
}
- spin_lock_irqsave(&ctx_alloc_lock, flags);
+ raw_spin_lock_irqsave(&ctx_alloc_lock, flags);
if (CTX_VALID(mm->context)) {
unsigned long nr = CTX_NRBITS(mm->context);
mmu_context_bmap[nr>>6] &= ~(1UL << (nr & 63));
}
- spin_unlock_irqrestore(&ctx_alloc_lock, flags);
+ raw_spin_unlock_irqrestore(&ctx_alloc_lock, flags);
}

2
debian/patches/features/all/rt/0005-futex-Ensure-lock-unlock-symetry-versus-pi_lock-and-.patch vendored
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@ -3,7 +3,7 @@ From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 1 Mar 2013 11:17:42 +0100
Subject: [PATCH 5/6] futex: Ensure lock/unlock symetry versus pi_lock and
hash bucket lock
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
In exit_pi_state_list() we have the following locking construct:

2
debian/patches/features/all/rt/HACK-printk-drop-the-logbuf_lock-more-often.patch vendored
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@ -2,7 +2,7 @@ From b72b514282ffad0d665ea94932b968f388304079 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 21 Mar 2013 19:01:05 +0100
Subject: [PATCH] HACK: printk: drop the logbuf_lock more often
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.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.

2
debian/patches/features/all/rt/Kind-of-revert-powerpc-52xx-provide-a-default-in-mpc.patch vendored
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@ -3,7 +3,7 @@ From: Wolfram Sang <wsa@the-dreams.de>
Date: Fri, 4 Oct 2013 17:37:09 +0200
Subject: [PATCH] Kind of revert "powerpc: 52xx: provide a default in
mpc52xx_irqhost_map()"
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
This more or less reverts commit 6391f697d4892a6f233501beea553e13f7745a23.
Instead of adding an unneeded 'default', mark the variable to prevent

2
debian/patches/features/all/rt/acpi-rt-Convert-acpi_gbl_hardware-lock-back-to-a-raw.patch vendored
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@ -1,7 +1,7 @@
From: Steven Rostedt <rostedt@goodmis.org>
Date: Wed, 13 Feb 2013 09:26:05 -0500
Subject: [PATCH] acpi/rt: Convert acpi_gbl_hardware lock back to a raw_spinlock_t
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
We hit the following bug with 3.6-rt:

6
debian/patches/features/all/rt/allow-preemption-in-recursive-migrate_disable-call.patch vendored
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@ -2,7 +2,7 @@ From 155cf657f6ddcade424253eb58d03a170dc9f64f Mon Sep 17 00:00:00 2001
From: Nicholas Mc Guire <der.herr@hofr.at>
Date: Wed, 20 Nov 2013 07:22:09 +0800
Subject: [PATCH 1/2] allow preemption in recursive migrate_disable call
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Minor cleanup in migrate_disable/migrate_enable. The recursive case
does not need to disable preemption as it is "pinned" to the current
@ -16,7 +16,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -2406,13 +2406,12 @@ void migrate_disable(void)
@@ -2419,13 +2419,12 @@ void migrate_disable(void)
WARN_ON_ONCE(p->migrate_disable_atomic);
#endif
@ -31,7 +31,7 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
pin_current_cpu();
p->migrate_disable = 1;
preempt_enable();
@@ -2438,13 +2437,12 @@ void migrate_enable(void)
@@ -2451,13 +2450,12 @@ void migrate_enable(void)
#endif
WARN_ON_ONCE(p->migrate_disable <= 0);

2
debian/patches/features/all/rt/arch-use-pagefault-disabled.patch vendored
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@ -1,7 +1,7 @@
Subject: mm: Fixup all fault handlers to check current->pagefault_disable
From: Thomas Gleixner <tglx@linutronix.de>
Date: Thu, 17 Mar 2011 11:32:28 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Necessary for decoupling pagefault disable from preempt count.

2
debian/patches/features/all/rt/arm-at91-pit-remove-irq-handler-when-clock-is-unused.patch vendored
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@ -1,7 +1,7 @@
From: Benedikt Spranger <b.spranger@linutronix.de>
Date: Sat, 6 Mar 2010 17:47:10 +0100
Subject: ARM: AT91: PIT: Remove irq handler when clock event is unused
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Setup and remove the interrupt handler in clock event mode selection.
This avoids calling the (shared) interrupt handler when the device is

2
debian/patches/features/all/rt/arm-at91-tclib-default-to-tclib-timer-for-rt.patch vendored
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@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sat, 1 May 2010 18:29:35 +0200
Subject: ARM: at91: tclib: Default to tclib timer for RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
RT is not too happy about the shared timer interrupt in AT91
devices. Default to tclib timer for RT.

2
debian/patches/features/all/rt/arm-convert-boot-lock-to-raw.patch vendored
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@ -1,7 +1,7 @@
From: Frank Rowand <frank.rowand@am.sony.com>
Date: Mon, 19 Sep 2011 14:51:14 -0700
Subject: [PATCH] preempt-rt: Convert arm boot_lock to raw
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.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.

2
debian/patches/features/all/rt/arm-disable-highmem-on-rt.patch vendored
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@ -1,7 +1,7 @@
Subject: arm-disable-highmem-on-rt.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Mon, 18 Jul 2011 17:09:28 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches/features/all/rt/arm-enable-highmem-for-rt.patch vendored
View File

@ -1,7 +1,7 @@
Subject: arm-enable-highmem-for-rt.patch
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/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

6
debian/patches/features/all/rt/arm-preempt-lazy-support.patch vendored
View File

@ -1,7 +1,7 @@
Subject: arm-preempt-lazy-support.patch
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/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
@ -60,7 +60,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
DEFINE(TI_EXEC_DOMAIN, offsetof(struct thread_info, exec_domain));
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -204,11 +204,18 @@ ENDPROC(__dabt_svc)
@@ -205,11 +205,18 @@ ENDPROC(__dabt_svc)
#ifdef CONFIG_PREEMPT
get_thread_info tsk
ldr r8, [tsk, #TI_PREEMPT] @ get preempt count
@ -81,7 +81,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
#endif
svc_exit r5, irq = 1 @ return from exception
@@ -223,6 +230,8 @@ ENDPROC(__irq_svc)
@@ -224,6 +231,8 @@ ENDPROC(__irq_svc)
1: bl preempt_schedule_irq @ irq en/disable is done inside
ldr r0, [tsk, #TI_FLAGS] @ get new tasks TI_FLAGS
tst r0, #_TIF_NEED_RESCHED

2
debian/patches/features/all/rt/ata-disable-interrupts-if-non-rt.patch vendored
View File

@ -1,7 +1,7 @@
From: Steven Rostedt <srostedt@redhat.com>
Date: Fri, 3 Jul 2009 08:44:29 -0500
Subject: ata: Do not disable interrupts in ide code for preempt-rt
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Use the local_irq_*_nort variants.

12
debian/patches/features/all/rt/block-shorten-interrupt-disabled-regions.patch vendored
View File

@ -1,7 +1,7 @@
Subject: block: Shorten interrupt disabled regions
From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 22 Jun 2011 19:47:02 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Moving the blk_sched_flush_plug() call out of the interrupt/preempt
disabled region in the scheduler allows us to replace
@ -49,7 +49,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -2914,7 +2914,7 @@ static void queue_unplugged(struct reque
@@ -2925,7 +2925,7 @@ static void queue_unplugged(struct reque
blk_run_queue_async(q);
else
__blk_run_queue(q);
@ -58,7 +58,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
}
static void flush_plug_callbacks(struct blk_plug *plug, bool from_schedule)
@@ -2962,7 +2962,6 @@ EXPORT_SYMBOL(blk_check_plugged);
@@ -2973,7 +2973,6 @@ EXPORT_SYMBOL(blk_check_plugged);
void blk_flush_plug_list(struct blk_plug *plug, bool from_schedule)
{
struct request_queue *q;
@ -66,7 +66,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
struct request *rq;
LIST_HEAD(list);
unsigned int depth;
@@ -2980,11 +2979,6 @@ void blk_flush_plug_list(struct blk_plug
@@ -2991,11 +2990,6 @@ void blk_flush_plug_list(struct blk_plug
q = NULL;
depth = 0;
@ -78,7 +78,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
while (!list_empty(&list)) {
rq = list_entry_rq(list.next);
list_del_init(&rq->queuelist);
@@ -2997,7 +2991,7 @@ void blk_flush_plug_list(struct blk_plug
@@ -3008,7 +3002,7 @@ void blk_flush_plug_list(struct blk_plug
queue_unplugged(q, depth, from_schedule);
q = rq->q;
depth = 0;
@ -87,7 +87,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
}
/*
@@ -3024,8 +3018,6 @@ void blk_flush_plug_list(struct blk_plug
@@ -3035,8 +3029,6 @@ void blk_flush_plug_list(struct blk_plug
*/
if (q)
queue_unplugged(q, depth, from_schedule);

2
debian/patches/features/all/rt/block-use-cpu-chill.patch vendored
View File

@ -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/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.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
debian/patches/features/all/rt/bug-rt-dependend-variants.patch vendored
View File

@ -1,7 +1,7 @@
From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 3 Jul 2009 08:29:58 -0500
Subject: bug: BUG_ON/WARN_ON variants dependend on RT/!RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

33
debian/patches/features/all/rt/clocksource-tclib-allow-higher-clockrates.patch vendored
View File

@ -1,18 +1,19 @@
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/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.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.
(fixed up by Sami Pietikäinen <Sami.Pietikainen@wapice.com>)
Signed-off-by: Benedikt Spranger <b.spranger@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
drivers/clocksource/tcb_clksrc.c | 35 +++++++++++++++++++++--------------
drivers/clocksource/tcb_clksrc.c | 38 ++++++++++++++++++++++----------------
drivers/misc/Kconfig | 12 ++++++++++--
2 files changed, 31 insertions(+), 16 deletions(-)
2 files changed, 32 insertions(+), 18 deletions(-)
--- a/drivers/clocksource/tcb_clksrc.c
+++ b/drivers/clocksource/tcb_clksrc.c
@ -85,32 +86,36 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
.set_next_event = tc_next_event,
.set_mode = tc_mode,
},
@@ -186,6 +184,8 @@ static struct irqaction tc_irqaction = {
@@ -184,8 +182,9 @@ static struct irqaction tc_irqaction = {
.handler = ch2_irq,
};
static void __init setup_clkevents(struct atmel_tc *tc, int clk32k_divisor_idx)
-static void __init setup_clkevents(struct atmel_tc *tc, int clk32k_divisor_idx)
+static void __init setup_clkevents(struct atmel_tc *tc, int divisor_idx)
{
+ unsigned divisor = atmel_tc_divisors[clk32k_divisor_idx];
+ u32 freq;
+ unsigned divisor = atmel_tc_divisors[divisor_idx];
struct clk *t2_clk = tc->clk[2];
int irq = tc->irq[2];
@@ -194,10 +194,14 @@ static void __init setup_clkevents(struc
@@ -193,11 +192,15 @@ static void __init setup_clkevents(struc
clkevt.clk = t2_clk;
tc_irqaction.dev_id = &clkevt;
timer_clock = clk32k_divisor_idx;
- timer_clock = clk32k_divisor_idx;
+ timer_clock = divisor_idx;
+ if (!divisor)
+ freq = 32768;
+ clkevt.freq = 32768;
+ else
+ freq = clk_get_rate(t2_clk) / divisor;
+ clkevt.freq = clk_get_rate(t2_clk) / divisor;
clkevt.clkevt.cpumask = cpumask_of(0);
- clockevents_config_and_register(&clkevt.clkevt, 32768, 1, 0xffff);
+ clockevents_config_and_register(&clkevt.clkevt, freq, 1, 0xffff);
+ clockevents_config_and_register(&clkevt.clkevt, clkevt.freq, 1, 0xffff);
setup_irq(irq, &tc_irqaction);
}
@@ -322,8 +326,11 @@ static int __init tcb_clksrc_init(void)
@@ -322,8 +325,11 @@ static int __init tcb_clksrc_init(void)
clocksource_register_hz(&clksrc, divided_rate);
/* channel 2: periodic and oneshot timer support */

18
debian/patches/features/all/rt/completion-use-simple-wait-queues.patch vendored
View File

@ -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/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Completions have no long lasting callbacks and therefor do not need
the complex waitqueue variant. Use simple waitqueues which reduces the
@ -60,7 +60,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
struct mm_struct;
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -2412,7 +2412,10 @@ void migrate_disable(void)
@@ -2423,7 +2423,10 @@ void migrate_disable(void)
}
#ifdef CONFIG_SCHED_DEBUG
@ -72,7 +72,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
#endif
if (p->migrate_disable) {
@@ -2443,7 +2446,10 @@ void migrate_enable(void)
@@ -2454,7 +2457,10 @@ void migrate_enable(void)
}
#ifdef CONFIG_SCHED_DEBUG
@ -84,7 +84,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
#endif
WARN_ON_ONCE(p->migrate_disable <= 0);
@@ -2901,10 +2907,10 @@ void complete(struct completion *x)
@@ -2912,10 +2918,10 @@ void complete(struct completion *x)
{
unsigned long flags;
@ -98,7 +98,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
}
EXPORT_SYMBOL(complete);
@@ -2921,10 +2927,10 @@ void complete_all(struct completion *x)
@@ -2932,10 +2938,10 @@ void complete_all(struct completion *x)
{
unsigned long flags;
@ -112,7 +112,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
}
EXPORT_SYMBOL(complete_all);
@@ -2933,20 +2939,20 @@ do_wait_for_common(struct completion *x,
@@ -2944,20 +2950,20 @@ do_wait_for_common(struct completion *x,
long (*action)(long), long timeout, int state)
{
if (!x->done) {
@ -138,7 +138,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
if (!x->done)
return timeout;
}
@@ -2960,9 +2966,9 @@ static inline long __sched
@@ -2971,9 +2977,9 @@ static inline long __sched
{
might_sleep();
@ -150,7 +150,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
return timeout;
}
@@ -3138,12 +3144,12 @@ bool try_wait_for_completion(struct comp
@@ -3149,12 +3155,12 @@ bool try_wait_for_completion(struct comp
unsigned long flags;
int ret = 1;
@ -165,7 +165,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
return ret;
}
EXPORT_SYMBOL(try_wait_for_completion);
@@ -3161,10 +3167,10 @@ bool completion_done(struct completion *
@@ -3172,10 +3178,10 @@ bool completion_done(struct completion *
unsigned long flags;
int ret = 1;

4
debian/patches/features/all/rt/cond-resched-lock-rt-tweak.patch vendored
View File

@ -1,7 +1,7 @@
Subject: cond-resched-lock-rt-tweak.patch
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/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
@ -10,7 +10,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -2482,7 +2482,7 @@ extern int _cond_resched(void);
@@ -2528,7 +2528,7 @@ extern int _cond_resched(void);
extern int __cond_resched_lock(spinlock_t *lock);

8
debian/patches/features/all/rt/cond-resched-softirq-rt.patch vendored
View File

@ -1,7 +1,7 @@
Subject: cond-resched-softirq-fix.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Thu, 14 Jul 2011 09:56:44 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
@ -11,7 +11,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -2493,12 +2493,16 @@ extern int __cond_resched_lock(spinlock_
@@ -2539,12 +2539,16 @@ extern int __cond_resched_lock(spinlock_
__cond_resched_lock(lock); \
})
@ -30,7 +30,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
{
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -3941,6 +3941,7 @@ int __cond_resched_lock(spinlock_t *lock
@@ -3954,6 +3954,7 @@ int __cond_resched_lock(spinlock_t *lock
}
EXPORT_SYMBOL(__cond_resched_lock);
@ -38,7 +38,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
int __sched __cond_resched_softirq(void)
{
BUG_ON(!in_softirq());
@@ -3954,6 +3955,7 @@ int __sched __cond_resched_softirq(void)
@@ -3967,6 +3968,7 @@ int __sched __cond_resched_softirq(void)
return 0;
}
EXPORT_SYMBOL(__cond_resched_softirq);

2
debian/patches/features/all/rt/condition-migration_disable-on-lock-acquisition.patch vendored
View File

@ -2,7 +2,7 @@ From 56f43bce737d3f28ad470c95fa84f824cb0d55ad Mon Sep 17 00:00:00 2001
From: Nicholas Mc Guire <der.herr@hofr.at>
Date: Thu, 21 Nov 2013 22:52:30 -0500
Subject: [PATCH 2/2] condition migration_disable on lock acquisition
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
No need to unconditionally migrate_disable (what is it protecting ?) and
re-enable on failure to acquire the lock.

2
debian/patches/features/all/rt/cpu-rt-make-hotplug-lock-a-sleeping-spinlock-on-rt.patch vendored
View File

@ -1,7 +1,7 @@
Subject: cpu: Make hotplug.lock a "sleeping" spinlock on RT
From: Steven Rostedt <rostedt@goodmis.org>
Date: Fri, 02 Mar 2012 10:36:57 -0500
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Tasks can block on hotplug.lock in pin_current_cpu(), but their state
might be != RUNNING. So the mutex wakeup will set the state

12
debian/patches/features/all/rt/cpu-rt-rework-cpu-down.patch vendored
View File

@ -1,7 +1,7 @@
From: Steven Rostedt <srostedt@redhat.com>
Date: Mon, 16 Jul 2012 08:07:43 +0000
Subject: cpu/rt: Rework cpu down for PREEMPT_RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Bringing a CPU down is a pain with the PREEMPT_RT kernel because
tasks can be preempted in many more places than in non-RT. In
@ -57,7 +57,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1807,6 +1807,10 @@ extern void do_set_cpus_allowed(struct t
@@ -1808,6 +1808,10 @@ extern void do_set_cpus_allowed(struct t
extern int set_cpus_allowed_ptr(struct task_struct *p,
const struct cpumask *new_mask);
@ -68,7 +68,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
#else
static inline void do_set_cpus_allowed(struct task_struct *p,
const struct cpumask *new_mask)
@@ -1819,6 +1823,9 @@ static inline int set_cpus_allowed_ptr(s
@@ -1820,6 +1824,9 @@ static inline int set_cpus_allowed_ptr(s
return -EINVAL;
return 0;
}
@ -443,7 +443,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
/* CPU didn't die: tell everyone. Can't complain. */
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -2359,7 +2359,7 @@ void migrate_disable(void)
@@ -2370,7 +2370,7 @@ void migrate_disable(void)
{
struct task_struct *p = current;
@ -452,7 +452,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
#ifdef CONFIG_SCHED_DEBUG
p->migrate_disable_atomic++;
#endif
@@ -2389,7 +2389,7 @@ void migrate_enable(void)
@@ -2400,7 +2400,7 @@ void migrate_enable(void)
unsigned long flags;
struct rq *rq;
@ -461,7 +461,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
#ifdef CONFIG_SCHED_DEBUG
p->migrate_disable_atomic--;
#endif
@@ -4428,6 +4428,84 @@ void do_set_cpus_allowed(struct task_str
@@ -4439,6 +4439,84 @@ void do_set_cpus_allowed(struct task_str
cpumask_copy(&p->cpus_allowed, new_mask);
}

2
debian/patches/features/all/rt/cpu-rt-variants.patch vendored
View File

@ -1,7 +1,7 @@
Subject: cpu-rt-variants.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 17 Jun 2011 15:42:38 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches/features/all/rt/cpu_down_move_migrate_enable_back.patch vendored
View File

@ -2,7 +2,7 @@ From linux-rt-users-owner@vger.kernel.org Thu Nov 7 03:07:12 2013
From: Tiejun Chen <tiejun.chen@windriver.com>
Subject: [v1][PATCH] cpu_down: move migrate_enable() back
Date: Thu, 7 Nov 2013 10:06:07 +0800
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Commit 08c1ab68, "hotplug-use-migrate-disable.patch", intends to
use migrate_enable()/migrate_disable() to replace that combination

2
debian/patches/features/all/rt/cpumask-disable-offstack-on-rt.patch vendored
View File

@ -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/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
We can't deal with the cpumask allocations which happen in atomic
context (see arch/x86/kernel/apic/io_apic.c) on RT right now.

2
debian/patches/features/all/rt/debugobjects-rt.patch vendored
View File

@ -1,7 +1,7 @@
Subject: debugobjects-rt.patch
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/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches/features/all/rt/dm-make-rt-aware.patch vendored
View File

@ -1,7 +1,7 @@
Subject: dm: Make rt aware
From: Thomas Gleixner <tglx@linutronix.de>
Date: Mon, 14 Nov 2011 23:06:09 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Use the BUG_ON_NORT variant for the irq_disabled() checks. RT has
interrupts legitimately enabled here as we cant deadlock against the

2
debian/patches/features/all/rt/drivers-net-8139-disable-irq-nosync.patch vendored
View File

@ -1,7 +1,7 @@
From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 3 Jul 2009 08:29:24 -0500
Subject: drivers/net: Use disable_irq_nosync() in 8139too
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Use disable_irq_nosync() instead of disable_irq() as this might be
called in atomic context with netpoll.

2
debian/patches/features/all/rt/drivers-net-fix-livelock-issues.patch vendored
View File

@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sat, 20 Jun 2009 11:36:54 +0200
Subject: drivers/net: fix livelock issues
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Preempt-RT runs into a live lock issue with the NETDEV_TX_LOCKED micro
optimization. The reason is that the softirq thread is rescheduling

2
debian/patches/features/all/rt/drivers-net-gianfar-make-rt-aware.patch vendored
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@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx@linutronix.de>
Date: Thu, 1 Apr 2010 20:20:57 +0200
Subject: drivers: net: gianfar: Make RT aware
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
The adjust_link() disables interrupts before taking the queue
locks. On RT those locks are converted to "sleeping" locks and

2
debian/patches/features/all/rt/drivers-net-tulip-add-missing-pci-disable.patch vendored
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@ -1,7 +1,7 @@
From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 3 Jul 2009 08:30:18 -0500
Subject: drivers/net: tulip_remove_one needs to call pci_disable_device()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Otherwise the device is not completely shut down.

2
debian/patches/features/all/rt/drivers-net-vortex-fix-locking-issues.patch vendored
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@ -1,7 +1,7 @@
From: Steven Rostedt <rostedt@goodmis.org>
Date: Fri, 3 Jul 2009 08:30:00 -0500
Subject: drivers/net: vortex fix locking issues
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Argh, cut and paste wasn't enough...

2
debian/patches/features/all/rt/drivers-random-reduce-preempt-disabled-region.patch vendored
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@ -1,7 +1,7 @@
From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 3 Jul 2009 08:29:30 -0500
Subject: drivers: random: Reduce preempt disabled region
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
No need to keep preemption disabled across the whole function.

2
debian/patches/features/all/rt/drivers-serial-call-flush_to_ldisc-when-the-irq-is-t.patch vendored
View File

@ -1,7 +1,7 @@
From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 3 Jul 2009 08:30:01 -0500
Subject: serial: 8250: Call flush_to_ldisc when the irq is threaded
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Signed-off-by: Ingo Molnar <mingo@elte.hu>

2
debian/patches/features/all/rt/drivers-serial-cleanup-locking-for-rt.patch vendored
View File

@ -1,7 +1,7 @@
From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 3 Jul 2009 08:30:01 -0500
Subject: serial: 8250: Clean up the locking for -rt
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

2
debian/patches/features/all/rt/drivers-tty-fix-omap-lock-crap.patch vendored
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@ -1,7 +1,7 @@
Subject: drivers-tty-fix-omap-lock-crap.patch
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/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches/features/all/rt/drivers-tty-pl011-irq-disable-madness.patch vendored
View File

@ -1,7 +1,7 @@
Subject: drivers-tty-pl011-irq-disable-madness.patch
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/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches/features/all/rt/drm-i915-drop-trace_i915_gem_ring_dispatch-onrt.patch vendored
View File

@ -2,7 +2,7 @@ From d841118ac80c5bfb18f47984bc40687eed08b714 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 25 Apr 2013 18:12:52 +0200
Subject: [PATCH] drm/i915: drop trace_i915_gem_ring_dispatch on rt
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
This tracepoint is responsible for:

2
debian/patches/features/all/rt/drm-remove-preempt_disable-from-drm_calc_vbltimestam.patch vendored
View File

@ -3,7 +3,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Fri, 11 Oct 2013 17:14:31 +0200
Subject: [PATCH] drm: remove preempt_disable() from
drm_calc_vbltimestamp_from_scanoutpos()
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Luis captured the following:

2
debian/patches/features/all/rt/early-printk-consolidate.patch vendored
View File

@ -1,7 +1,7 @@
Subject: early-printk-consolidate.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sat, 23 Jul 2011 11:04:08 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches/features/all/rt/epoll-use-get-cpu-light.patch vendored
View File

@ -1,7 +1,7 @@
Subject: epoll.patch
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/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches/features/all/rt/filemap-fix-up.patch vendored
View File

@ -1,7 +1,7 @@
Subject: filemap-fix-up.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 17 Jun 2011 18:56:24 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Wrecked-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>

2
debian/patches/features/all/rt/fix-rt-int3-x86_32-3.2-rt.patch vendored
View File

@ -1,6 +1,6 @@
From: Steven Rostedt <rostedt@goodmis.org>
Subject: x86: Do not disable preemption in int3 on 32bit
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Preemption must be disabled before enabling interrupts in do_trap
on x86_64 because the stack in use for int3 and debug is a per CPU

16
debian/patches/features/all/rt/fixup_opencoded_completions.patch vendored
View File

@ -2,15 +2,14 @@ From 53a9508f5983092928b0e6e12f400b686e1f04b1 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Mon, 28 Oct 2013 11:50:06 +0100
Subject: [PATCH] a few open coded completions
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
drivers/net/wireless/orinoco/orinoco_usb.c | 2 +-
drivers/usb/gadget/f_fs.c | 2 +-
drivers/usb/gadget/inode.c | 4 ++--
include/linux/netdevice.h | 2 +-
4 files changed, 5 insertions(+), 5 deletions(-)
3 files changed, 4 insertions(+), 4 deletions(-)
--- a/drivers/net/wireless/orinoco/orinoco_usb.c
+++ b/drivers/net/wireless/orinoco/orinoco_usb.c
@ -54,14 +53,3 @@ Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
if (epdata->status == -ECONNRESET)
epdata->status = -EINTR;
} else {
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1214,7 +1214,7 @@ struct net_device {
unsigned char perm_addr[MAX_ADDR_LEN]; /* permanent hw address */
unsigned char addr_assign_type; /* hw address assignment type */
unsigned char addr_len; /* hardware address length */
- unsigned char neigh_priv_len;
+ unsigned short neigh_priv_len;
unsigned short dev_id; /* Used to differentiate devices
* that share the same link
* layer address

2
debian/patches/features/all/rt/fs-block-rt-support.patch vendored
View File

@ -1,7 +1,7 @@
Subject: fs-block-rt-support.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Tue, 14 Jun 2011 17:05:09 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches/features/all/rt/fs-dcache-use-cpu-chill-in-trylock-loops.patch vendored
View File

@ -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/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.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

2
debian/patches/features/all/rt/fs-jbd-pull-plug-when-waiting-for-space.patch vendored
View File

@ -1,7 +1,7 @@
From: Mike Galbraith <mgalbraith@suse.de>
Date: Wed, 11 Jul 2012 22:05:20 +0000
Subject: fs, jbd: pull your plug when waiting for space
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
With an -rt kernel, and a heavy sync IO load, tasks can jam
up on journal locks without unplugging, which can lead to

2
debian/patches/features/all/rt/fs-jbd-replace-bh_state-lock.patch vendored
View File

@ -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/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
bit_spin_locks break under RT.

2
debian/patches/features/all/rt/fs-namespace-preemption-fix.patch vendored
View File

@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 19 Jul 2009 08:44:27 -0500
Subject: fs: namespace preemption fix
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
On RT we cannot loop with preemption disabled here as
mnt_make_readonly() might have been preempted. We can safely enable

2
debian/patches/features/all/rt/fs-ntfs-disable-interrupt-non-rt.patch vendored
View File

@ -1,7 +1,7 @@
From: Mike Galbraith <efault@gmx.de>
Date: Fri, 3 Jul 2009 08:44:12 -0500
Subject: fs: ntfs: disable interrupt only on !RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
On Sat, 2007-10-27 at 11:44 +0200, Ingo Molnar wrote:
> * Nick Piggin <nickpiggin@yahoo.com.au> wrote:

2
debian/patches/features/all/rt/fs-replace-bh_uptodate_lock-for-rt.patch vendored
View File

@ -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/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Wrap the bit_spin_lock calls into a separate inline and add the RT
replacements with a real spinlock.

2
debian/patches/features/all/rt/ftrace-migrate-disable-tracing.patch vendored
View File

@ -1,7 +1,7 @@
Subject: ftrace-migrate-disable-tracing.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 17 Jul 2011 21:56:42 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches/features/all/rt/futex-requeue-pi-fix.patch vendored
View File

@ -1,6 +1,6 @@
From: Steven Rostedt <rostedt@goodmis.org>
Subject: futex: Fix bug on when a requeued RT task times out
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Requeue with timeout causes a bug with PREEMPT_RT_FULL.

2
debian/patches/features/all/rt/genirq-disable-irqpoll-on-rt.patch vendored
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@ -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/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Creates long latencies for no value

2
debian/patches/features/all/rt/genirq-do-not-invoke-the-affinity-callback-via-a-wor.patch vendored
View File

@ -2,7 +2,7 @@ From 76666dbbdd40e963e7df84c123fc9aea4a2bcc69 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Wed, 21 Aug 2013 17:48:46 +0200
Subject: [PATCH] genirq: do not invoke the affinity callback via a workqueue
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Joe Korty reported, that __irq_set_affinity_locked() schedules a
workqueue while holding a rawlock which results in a might_sleep()

2
debian/patches/features/all/rt/genirq-force-threading.patch vendored
View File

@ -1,7 +1,7 @@
Subject: genirq-force-threading.patch
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/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches/features/all/rt/genirq-nodebug-shirq.patch vendored
View File

@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 18 Mar 2011 10:22:04 +0100
Subject: genirq: Disable DEBUG_SHIRQ for rt
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches/features/all/rt/hotplug-call-cpu_unplug_begin-a-little-early.patch vendored
View File

@ -1,7 +1,7 @@
Subject: hotplug: Call cpu_unplug_begin() before DOWN_PREPARE
From: Yong Zhang <yong.zhang0@gmail.com>
Date: Sun, 16 Oct 2011 18:56:44 +0800
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
cpu_unplug_begin() should be called before CPU_DOWN_PREPARE, because
at CPU_DOWN_PREPARE cpu_active is cleared and sched_domain is

2
debian/patches/features/all/rt/hotplug-light-get-online-cpus.patch vendored
View File

@ -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/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
get_online_cpus() is a heavy weight function which involves a global
mutex. migrate_disable() wants a simpler construct which prevents only

2
debian/patches/features/all/rt/hotplug-sync_unplug-no-27-5cn-27-in-task-name.patch vendored
View File

@ -1,7 +1,7 @@
Subject: hotplug: sync_unplug: No "\n" in task name
From: Yong Zhang <yong.zhang0@gmail.com>
Date: Sun, 16 Oct 2011 18:56:43 +0800
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Otherwise the output will look a little odd.

2
debian/patches/features/all/rt/hotplug-use-migrate-disable.patch vendored
View File

@ -1,7 +1,7 @@
Subject: hotplug-use-migrate-disable.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 17 Jul 2011 19:35:29 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches/features/all/rt/hrtimer-Move-schedule_work-call-to-helper-thread.patch vendored
View File

@ -2,7 +2,7 @@ From 180cdb93d796bf52c919f5e3df30af83aa6d46ca Mon Sep 17 00:00:00 2001
From: Yang Shi <yang.shi@windriver.com>
Date: Mon, 16 Sep 2013 14:09:19 -0700
Subject: [PATCH] hrtimer: Move schedule_work call to helper thread
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
When run ltp leapsec_timer test, the following call trace is caught:

2
debian/patches/features/all/rt/hrtimer-fixup-hrtimer-callback-changes-for-preempt-r.patch vendored
View File

@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 3 Jul 2009 08:44:31 -0500
Subject: hrtimer: fixup hrtimer callback changes for preempt-rt
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
In preempt-rt we can not call the callbacks which take sleeping locks
from the timer interrupt context.

2
debian/patches/features/all/rt/hrtimer-raise-softirq-if-hrtimer-irq-stalled.patch vendored
View File

@ -1,7 +1,7 @@
Subject: hrtimer: Raise softirq if hrtimer irq stalled
From: Watanabe <shunsuke.watanabe@tel.com>
Date: Sun, 28 Oct 2012 11:13:44 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
When the hrtimer stall detection hits the softirq is not raised.

2
debian/patches/features/all/rt/hrtimers-prepare-full-preemption.patch vendored
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@ -1,7 +1,7 @@
From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 3 Jul 2009 08:29:34 -0500
Subject: hrtimers: prepare full preemption
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Make cancellation of a running callback in softirq context safe
against preemption.

2
debian/patches/features/all/rt/hwlat-detector-Don-t-ignore-threshold-module-paramet.patch vendored
View File

@ -2,7 +2,7 @@ From c19bf3baaa55918486b868ab17aae0c0c220e51f Mon Sep 17 00:00:00 2001
From: Mike Galbraith <bitbucket@online.de>
Date: Fri, 30 Aug 2013 07:57:25 +0200
Subject: [PATCH] hwlat-detector: Don't ignore threshold module parameter
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
If the user specified a threshold at module load time, use it.

2
debian/patches/features/all/rt/hwlat-detector-Update-hwlat_detector-to-add-outer-lo.patch vendored
View File

@ -3,7 +3,7 @@ From: Steven Rostedt <rostedt@goodmis.org>
Date: Mon, 19 Aug 2013 17:33:25 -0400
Subject: [PATCH 1/3] hwlat-detector: Update hwlat_detector to add outer loop
detection
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
The hwlat_detector reads two timestamps in a row, then reports any
gap between those calls. The problem is, it misses everything between

2
debian/patches/features/all/rt/hwlat-detector-Use-thread-instead-of-stop-machine.patch vendored
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@ -2,7 +2,7 @@ From 42b3963c5d3dcdb54226fc6bbb6b5fbcf3f2ddee Mon Sep 17 00:00:00 2001
From: Steven Rostedt <rostedt@goodmis.org>
Date: Mon, 19 Aug 2013 17:33:27 -0400
Subject: [PATCH 3/3] hwlat-detector: Use thread instead of stop machine
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
There's no reason to use stop machine to search for hardware latency.
Simply disabling interrupts while running the loop will do enough to

2
debian/patches/features/all/rt/hwlat-detector-Use-trace_clock_local-if-available.patch vendored
View File

@ -2,7 +2,7 @@ From 4aaca90c0255caee9a55371afaecb32365123762 Mon Sep 17 00:00:00 2001
From: Steven Rostedt <rostedt@goodmis.org>
Date: Mon, 19 Aug 2013 17:33:26 -0400
Subject: [PATCH 2/3] hwlat-detector: Use trace_clock_local if available
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
As ktime_get() calls into the timing code which does a read_seq(), it
may be affected by other CPUS that touch that lock. To remove this

2
debian/patches/features/all/rt/hwlatdetect.patch vendored
View File

@ -1,7 +1,7 @@
Subject: hwlatdetect.patch
From: Carsten Emde <C.Emde@osadl.org>
Date: Tue, 19 Jul 2011 13:53:12 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Jon Masters developed this wonderful SMI detector. For details please
consult Documentation/hwlat_detector.txt. It could be ported to Linux

2
debian/patches/features/all/rt/i2c-omap-drop-the-lock-hard-irq-context.patch vendored
View File

@ -2,7 +2,7 @@ From 5145351047b216cca13aaca99f939a9a594c6c4d Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 21 Mar 2013 11:35:49 +0100
Subject: [PATCH 2/3] i2c/omap: drop the lock hard irq context
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
The lock is taken while reading two registers. On RT the first lock is
taken in hard irq where it might sleep and in the threaded irq.

2
debian/patches/features/all/rt/i915_compile_fix.patch vendored
View File

@ -1,6 +1,6 @@
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Subject: gpu/i915: don't open code these things
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
The opencode part is gone in 1f83fee0 ("drm/i915: clear up wedged transitions")
the owner check is still there.

2
debian/patches/features/all/rt/ide-use-nort-local-irq-variants.patch vendored
View File

@ -1,7 +1,7 @@
From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 3 Jul 2009 08:30:16 -0500
Subject: ide: Do not disable interrupts for PREEMPT-RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Use the local_irq_*_nort variants.

2
debian/patches/features/all/rt/idle-state.patch vendored
View File

@ -1,7 +1,7 @@
Subject: sched: Init idle->on_rq in init_idle()
From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 09 Jan 2013 23:03:29 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches/features/all/rt/idr-use-local-lock-for-protection.patch vendored
View File

@ -1,6 +1,6 @@
From: Thomas Gleixner <tglx@linutronix.de>
Subject: idr: Use local lock instead of preempt enable/disable
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
We need to protect the per cpu variable and prevent migration.

2
debian/patches/features/all/rt/infiniband-mellanox-ib-use-nort-irq.patch vendored
View File

@ -1,7 +1,7 @@
From: Sven-Thorsten Dietrich <sdietrich@novell.com>
Date: Fri, 3 Jul 2009 08:30:35 -0500
Subject: infiniband: Mellanox IB driver patch use _nort() primitives
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Fixes in_atomic stack-dump, when Mellanox module is loaded into the RT
Kernel.

2
debian/patches/features/all/rt/inpt-gameport-use-local-irq-nort.patch vendored
View File

@ -1,7 +1,7 @@
From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 3 Jul 2009 08:30:16 -0500
Subject: input: gameport: Do not disable interrupts on PREEMPT_RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Use the _nort() primitives.

2
debian/patches/features/all/rt/ipc-make-rt-aware.patch vendored
View File

@ -1,7 +1,7 @@
From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 3 Jul 2009 08:30:12 -0500
Subject: ipc: Make the ipc code -rt aware
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
RT serializes the code with the (rt)spinlock but keeps preemption
enabled. Some parts of the code need to be atomic nevertheless.

2
debian/patches/features/all/rt/ipc-mqueue-add-a-critical-section-to-avoid-a-deadlock.patch vendored
View File

@ -1,7 +1,7 @@
Subject: ipc/mqueue: Add a critical section to avoid a deadlock
From: KOBAYASHI Yoshitake <yoshitake.kobayashi@toshiba.co.jp>
Date: Sat, 23 Jul 2011 11:57:36 +0900
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
(Repost for v3.0-rt1 and changed the distination addreses)
I have tested the following patch on v3.0-rt1 with PREEMPT_RT_FULL.

2
debian/patches/features/all/rt/ipc-sem-rework-semaphore-wakeups.patch vendored
View File

@ -1,7 +1,7 @@
Subject: ipc/sem: Rework semaphore wakeups
From: Peter Zijlstra <peterz@infradead.org>
Date: Wed, 14 Sep 2011 11:57:04 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Current sysv sems have a weird ass wakeup scheme that involves keeping
preemption disabled over a potential O(n^2) loop and busy waiting on

2
debian/patches/features/all/rt/irq-allow-disabling-of-softirq-processing-in-irq-thread-context.patch vendored
View File

@ -1,7 +1,7 @@
Subject: genirq: Allow disabling of softirq processing in irq thread context
From: Thomas Gleixner <tglx@linutronix.de>
Date: Tue, 31 Jan 2012 13:01:27 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.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

2
debian/patches/features/all/rt/jump-label-rt.patch vendored
View File

@ -1,7 +1,7 @@
Subject: jump-label-rt.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 13 Jul 2011 11:03:16 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches/features/all/rt/kconfig-disable-a-few-options-rt.patch vendored
View File

@ -1,7 +1,7 @@
Subject: kconfig-disable-a-few-options-rt.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 24 Jul 2011 12:11:43 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Disable stuff which is known to have issues on RT

2
debian/patches/features/all/rt/kconfig-preempt-rt-full.patch vendored
View File

@ -1,7 +1,7 @@
Subject: kconfig-preempt-rt-full.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 29 Jun 2011 14:58:57 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches/features/all/rt/kernel-cpu-fix-cpu-down-problem-if-kthread-s-cpu-is-.patch vendored
View File

@ -3,7 +3,7 @@ From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Fri, 7 Jun 2013 22:37:06 +0200
Subject: [PATCH] kernel/cpu: fix cpu down problem if kthread's cpu is
going down
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
If kthread is pinned to CPUx and CPUx is going down then we get into
trouble:

2
debian/patches/features/all/rt/kernel-hotplug-restore-original-cpu-mask-oncpu-down.patch vendored
View File

@ -2,7 +2,7 @@ From 4c6df3d78817c20a147c0291f6600d002c0910d3 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Fri, 14 Jun 2013 17:16:35 +0200
Subject: [PATCH] kernel/hotplug: restore original cpu mask oncpu/down
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
If a task which is allowed to run only on CPU X puts CPU Y down then it
will be allowed on all CPUs but the on CPU Y after it comes back from

2
debian/patches/features/all/rt/kgb-serial-hackaround.patch vendored
View File

@ -1,7 +1,7 @@
From: Jason Wessel <jason.wessel@windriver.com>
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/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
On 07/27/2011 04:37 PM, Thomas Gleixner wrote:
> - KGDB (not yet disabled) is reportedly unusable on -rt right now due

4
debian/patches/features/all/rt/latency-hist.patch vendored
View File

@ -1,7 +1,7 @@
Subject: latency-hist.patch
From: Carsten Emde <C.Emde@osadl.org>
Date: Tue, 19 Jul 2011 14:03:41 +0100
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
This patch provides a recording mechanism to store data of potential
sources of system latencies. The recordings separately determine the
@ -229,7 +229,7 @@ Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
void *start_site;
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1397,6 +1397,12 @@ struct task_struct {
@@ -1398,6 +1398,12 @@ struct task_struct {
unsigned long trace;
/* bitmask and counter of trace recursion */
unsigned long trace_recursion;

2
debian/patches/features/all/rt/lglocks-rt.patch vendored
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@ -1,7 +1,7 @@
Subject: lglocks-rt.patch
From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 15 Jun 2011 11:02:21 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches/features/all/rt/list-add-list-last-entry.patch vendored
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@ -1,7 +1,7 @@
Subject: list-add-list-last-entry.patch
From: Peter Zijlstra <peterz@infradead.org>
Date: Tue, 21 Jun 2011 11:22:36 +0200
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

2
debian/patches/features/all/rt/list_bl.h-make-list-head-locking-RT-safe.patch vendored
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@ -1,7 +1,7 @@
From: Paul Gortmaker <paul.gortmaker@windriver.com>
Date: Fri, 21 Jun 2013 15:07:25 -0400
Subject: [PATCH] list_bl.h: make list head locking RT safe
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.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

2
debian/patches/features/all/rt/local-irq-rt-depending-variants.patch vendored
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@ -1,7 +1,7 @@
From: Thomas Gleixner <tglx@linutronix.de>
Date: Tue, 21 Jul 2009 22:34:14 +0200
Subject: rt: local_irq_* variants depending on RT/!RT
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.1-rt4.tar.xz
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.12/patches-3.12.5-rt7.tar.xz
Add local_irq_*_(no)rt variant which are mainly used to break
interrupt disabled sections on PREEMPT_RT or to explicitely disable

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