The patch titled
lock validator: lockdep: add local_irq_enable_in_hardirq() API.
has been added to the -mm tree. Its filename is
lock-validator-lockdep-add-local_irq_enable_in_hardirq-api.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: lock validator: lockdep: add local_irq_enable_in_hardirq() API.
From: Ingo Molnar <mingo@xxxxxxx>
Introduce local_irq_enable_in_hardirq() API. It is currently aliased to
local_irq_enable(), hence has no functional effects.
This API will be used by lockdep, but even without lockdep this will better
document places in the kernel where a hardirq context enables hardirqs.
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
Signed-off-by: Arjan van de Ven <arjan@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
arch/i386/kernel/nmi.c | 3 ++-
arch/x86_64/kernel/nmi.c | 3 ++-
drivers/ide/ide-io.c | 6 +++---
drivers/ide/ide-taskfile.c | 2 +-
include/linux/ide.h | 2 +-
include/linux/trace_irqflags.h | 2 ++
kernel/irq/handle.c | 2 +-
7 files changed, 12 insertions(+), 8 deletions(-)
diff -puN arch/i386/kernel/nmi.c~lock-validator-lockdep-add-local_irq_enable_in_hardirq-api arch/i386/kernel/nmi.c
--- devel/arch/i386/kernel/nmi.c~lock-validator-lockdep-add-local_irq_enable_in_hardirq-api 2006-05-29 18:12:50.000000000 -0700
+++ devel-akpm/arch/i386/kernel/nmi.c 2006-05-29 18:12:50.000000000 -0700
@@ -198,7 +198,8 @@ static __cpuinit inline int nmi_known_cp
static __init void nmi_cpu_busy(void *data)
{
volatile int *endflag = data;
- local_irq_enable();
+
+ local_irq_enable_in_hardirq();
/* Intentionally don't use cpu_relax here. This is
to make sure that the performance counter really ticks,
even if there is a simulator or similar that catches the
diff -puN arch/x86_64/kernel/nmi.c~lock-validator-lockdep-add-local_irq_enable_in_hardirq-api arch/x86_64/kernel/nmi.c
--- devel/arch/x86_64/kernel/nmi.c~lock-validator-lockdep-add-local_irq_enable_in_hardirq-api 2006-05-29 18:12:50.000000000 -0700
+++ devel-akpm/arch/x86_64/kernel/nmi.c 2006-05-29 18:12:50.000000000 -0700
@@ -196,7 +196,8 @@ void nmi_watchdog_default(void)
static __init void nmi_cpu_busy(void *data)
{
volatile int *endflag = data;
- local_irq_enable();
+
+ local_irq_enable_in_hardirq();
/* Intentionally don't use cpu_relax here. This is
to make sure that the performance counter really ticks,
even if there is a simulator or similar that catches the
diff -puN drivers/ide/ide-io.c~lock-validator-lockdep-add-local_irq_enable_in_hardirq-api drivers/ide/ide-io.c
--- devel/drivers/ide/ide-io.c~lock-validator-lockdep-add-local_irq_enable_in_hardirq-api 2006-05-29 18:12:50.000000000 -0700
+++ devel-akpm/drivers/ide/ide-io.c 2006-05-29 18:12:50.000000000 -0700
@@ -689,7 +689,7 @@ static ide_startstop_t drive_cmd_intr (i
u8 stat = hwif->INB(IDE_STATUS_REG);
int retries = 10;
- local_irq_enable();
+ local_irq_enable_in_hardirq();
if ((stat & DRQ_STAT) && args && args[3]) {
u8 io_32bit = drive->io_32bit;
drive->io_32bit = 0;
@@ -1273,7 +1273,7 @@ static void ide_do_request (ide_hwgroup_
if (masked_irq != IDE_NO_IRQ && hwif->irq != masked_irq)
disable_irq_nosync(hwif->irq);
spin_unlock(&ide_lock);
- local_irq_enable();
+ local_irq_enable_in_hardirq();
/* allow other IRQs while we start this request */
startstop = start_request(drive, rq);
spin_lock_irq(&ide_lock);
@@ -1622,7 +1622,7 @@ irqreturn_t ide_intr (int irq, void *dev
spin_unlock(&ide_lock);
if (drive->unmask)
- local_irq_enable();
+ local_irq_enable_in_hardirq();
/* service this interrupt, may set handler for next interrupt */
startstop = handler(drive);
spin_lock_irq(&ide_lock);
diff -puN drivers/ide/ide-taskfile.c~lock-validator-lockdep-add-local_irq_enable_in_hardirq-api drivers/ide/ide-taskfile.c
--- devel/drivers/ide/ide-taskfile.c~lock-validator-lockdep-add-local_irq_enable_in_hardirq-api 2006-05-29 18:12:50.000000000 -0700
+++ devel-akpm/drivers/ide/ide-taskfile.c 2006-05-29 18:12:50.000000000 -0700
@@ -223,7 +223,7 @@ ide_startstop_t task_no_data_intr (ide_d
ide_hwif_t *hwif = HWIF(drive);
u8 stat;
- local_irq_enable();
+ local_irq_enable_in_hardirq();
if (!OK_STAT(stat = hwif->INB(IDE_STATUS_REG),READY_STAT,BAD_STAT)) {
return ide_error(drive, "task_no_data_intr", stat);
/* calls ide_end_drive_cmd */
diff -puN include/linux/ide.h~lock-validator-lockdep-add-local_irq_enable_in_hardirq-api include/linux/ide.h
--- devel/include/linux/ide.h~lock-validator-lockdep-add-local_irq_enable_in_hardirq-api 2006-05-29 18:12:50.000000000 -0700
+++ devel-akpm/include/linux/ide.h 2006-05-29 18:12:50.000000000 -0700
@@ -1361,7 +1361,7 @@ extern struct semaphore ide_cfg_sem;
* ide_drive_t->hwif: constant, no locking
*/
-#define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable(); } while (0)
+#define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0)
extern struct bus_type ide_bus_type;
diff -puN include/linux/trace_irqflags.h~lock-validator-lockdep-add-local_irq_enable_in_hardirq-api include/linux/trace_irqflags.h
--- devel/include/linux/trace_irqflags.h~lock-validator-lockdep-add-local_irq_enable_in_hardirq-api 2006-05-29 18:12:50.000000000 -0700
+++ devel-akpm/include/linux/trace_irqflags.h 2006-05-29 18:12:50.000000000 -0700
@@ -66,6 +66,8 @@
} \
} while (0)
+#define local_irq_enable_in_hardirq() local_irq_enable()
+
#define safe_halt() \
do { \
trace_hardirqs_on(); \
diff -puN kernel/irq/handle.c~lock-validator-lockdep-add-local_irq_enable_in_hardirq-api kernel/irq/handle.c
--- devel/kernel/irq/handle.c~lock-validator-lockdep-add-local_irq_enable_in_hardirq-api 2006-05-29 18:12:50.000000000 -0700
+++ devel-akpm/kernel/irq/handle.c 2006-05-29 18:12:50.000000000 -0700
@@ -114,7 +114,7 @@ irqreturn_t handle_IRQ_event(unsigned in
unsigned int status = 0;
if (!(action->flags & SA_INTERRUPT))
- local_irq_enable();
+ local_irq_enable_in_hardirq();
do {
ret = action->handler(irq, action->dev_id, regs);
_
Patches currently in -mm which might be from mingo@xxxxxxx are
hrtimer-export-symbols.patch
x86_64-fix-stack-mmap-randomization-for-compat.patch
git-acpi.patch
lock-validator-sound-oss-emu10k1-midic-cleanup.patch
fix-drivers-mfd-ucb1x00-corec-irq-probing-bug.patch
git-infiniband.patch
git-netdev-all.patch
fix-for-serial-uart-lockup.patch
lock-validator-lockdep-small-xfs-init_rwsem-cleanup.patch
swapless-pm-add-r-w-migration-entries.patch
i386-break-out-of-recursion-in-stackframe-walk.patch
x86-re-enable-generic-numa.patch
vdso-randomize-the-i386-vdso-by-moving-it-into-a-vma.patch
vdso-randomize-the-i386-vdso-by-moving-it-into-a-vma-tidy.patch
vdso-randomize-the-i386-vdso-by-moving-it-into-a-vma-arch_vma_name-fix.patch
work-around-ppc64-bootup-bug-by-making-mutex-debugging-save-restore-irqs.patch
kernel-kernel-cpuc-to-mutexes.patch
cond-resched-might-sleep-fix.patch
define-__raw_get_cpu_var-and-use-it.patch
ide-cd-end-of-media-error-fix.patch
spin-rwlock-init-cleanups.patch
lock-validator-introduce-warn_on_oncecond.patch
time-clocksource-infrastructure.patch
sched-comment-bitmap-size-accounting.patch
sched-fix-interactive-ceiling-code.patch
sched-implement-smpnice.patch
sched-protect-calculation-of-max_pull-from-integer-wrap.patch
sched-store-weighted-load-on-up.patch
sched-add-discrete-weighted-cpu-load-function.patch
sched-prevent-high-load-weight-tasks-suppressing-balancing.patch
sched-improve-stability-of-smpnice-load-balancing.patch
sched-improve-smpnice-load-balancing-when-load-per-task.patch
smpnice-dont-consider-sched-groups-which-are-lightly-loaded-for-balancing.patch
smpnice-dont-consider-sched-groups-which-are-lightly-loaded-for-balancing-fix.patch
sched-modify-move_tasks-to-improve-load-balancing-outcomes.patch
sched-avoid-unnecessarily-moving-highest-priority-task-move_tasks.patch
sched-avoid-unnecessarily-moving-highest-priority-task-move_tasks-fix-2.patch
sched_domain-handle-kmalloc-failure.patch
sched_domain-handle-kmalloc-failure-fix.patch
sched_domain-dont-use-gfp_atomic.patch
sched_domain-use-kmalloc_node.patch
sched_domain-allocate-sched_group-structures-dynamically.patch
sched-add-above-background-load-function.patch
mm-implement-swap-prefetching-fix.patch
pi-futex-futex-code-cleanups.patch
pi-futex-robust-futex-docs-fix.patch
pi-futex-introduce-debug_check_no_locks_freed.patch
pi-futex-introduce-warn_on_smp.patch
pi-futex-add-plist-implementation.patch
pi-futex-scheduler-support-for-pi.patch
pi-futex-rt-mutex-core.patch
pi-futex-rt-mutex-docs.patch
pi-futex-rt-mutex-docs-update.patch
pi-futex-rt-mutex-debug.patch
pi-futex-rt-mutex-tester.patch
pi-futex-rt-mutex-futex-api.patch
pi-futex-futex_lock_pi-futex_unlock_pi-support.patch
futex_requeue-optimization.patch
genirq-rename-desc-handler-to-desc-chip.patch
genirq-rename-desc-handler-to-desc-chip-power-fix.patch
genirq-rename-desc-handler-to-desc-chip-ia64-fix.patch
genirq-rename-desc-handler-to-desc-chip-ia64-fix-2.patch
genirq-sem2mutex-probe_sem-probing_active.patch
genirq-cleanup-merge-irq_affinity-into-irq_desc.patch
genirq-cleanup-remove-irq_descp.patch
genirq-cleanup-remove-fastcall.patch
genirq-cleanup-misc-code-cleanups.patch
genirq-cleanup-reduce-irq_desc_t-use-mark-it-obsolete.patch
genirq-cleanup-include-linux-irqh.patch
genirq-cleanup-merge-irq_dir-smp_affinity_entry-into-irq_desc.patch
genirq-cleanup-merge-pending_irq_cpumask-into-irq_desc.patch
genirq-cleanup-turn-arch_has_irq_per_cpu-into-config_irq_per_cpu.patch
genirq-debug-better-debug-printout-in-enable_irq.patch
genirq-add-retrigger-irq-op-to-consolidate-hw_irq_resend.patch
genirq-doc-comment-include-linux-irqh-structures.patch
genirq-doc-handle_irq_event-and-__do_irq-comments.patch
genirq-cleanup-no_irq_type-cleanups.patch
genirq-doc-add-design-documentation.patch
genirq-add-genirq-sw-irq-retrigger.patch
genirq-add-irq_noprobe-support.patch
genirq-add-irq_norequest-support.patch
genirq-add-irq_noautoen-support.patch
genirq-update-copyrights.patch
genirq-core.patch
genirq-add-irq-chip-support.patch
genirq-add-handle_bad_irq.patch
genirq-add-irq-wake-power-management-support.patch
genirq-add-sa_trigger-support.patch
genirq-cleanup-no_irq_type-no_irq_chip-rename.patch
genirq-convert-the-x86_64-architecture-to-irq-chips.patch
genirq-convert-the-i386-architecture-to-irq-chips.patch
genirq-convert-the-i386-architecture-to-irq-chips-fix-2.patch
genirq-more-verbose-debugging-on-unexpected-irq-vectors.patch
lock-validator-floppyc-irq-release-fix.patch
lock-validator-forcedethc-fix.patch
lock-validator-mutex-section-binutils-workaround.patch
lock-validator-add-__module_address-method.patch
lock-validator-better-lock-debugging.patch
lock-validator-locking-api-self-tests.patch
lock-validator-locking-init-debugging-improvement.patch
lock-validator-beautify-x86_64-stacktraces.patch
lock-validator-x86_64-document-stack-frame-internals.patch
lock-validator-stacktrace.patch
lock-validator-fown-locking-workaround.patch
lock-validator-sk_callback_lock-workaround.patch
lock-validator-irqtrace-core.patch
lock-validator-irqtrace-cleanup-include-asm-i386-irqflagsh.patch
lock-validator-irqtrace-cleanup-include-asm-x86_64-irqflagsh.patch
lock-validator-lockdep-add-local_irq_enable_in_hardirq-api.patch
lock-validator-add-per_cpu_offset.patch
lock-validator-add-per_cpu_offset-fix.patch
lock-validator-core.patch
lock-validator-procfs.patch
lock-validator-design-docs.patch
lock-validator-prove-rwsem-locking-correctness.patch
lock-validator-prove-spinlock-rwlock-locking-correctness.patch
lock-validator-prove-mutex-locking-correctness.patch
lock-validator-print-all-lock-types-on-sysrq-d.patch
lock-validator-x86_64-early-init.patch
lock-validator-smp-alternatives-workaround.patch
lock-validator-do-not-recurse-in-printk.patch
lock-validator-disable-nmi-watchdog-if-config_lockdep.patch
lock-validator-special-locking-bdev.patch
lock-validator-special-locking-direct-io.patch
lock-validator-special-locking-serial.patch
lock-validator-special-locking-dcache.patch
lock-validator-special-locking-i_mutex.patch
lock-validator-special-locking-s_lock.patch
lock-validator-special-locking-futex.patch
lock-validator-special-locking-genirq.patch
lock-validator-special-locking-completions.patch
lock-validator-special-locking-waitqueues.patch
lock-validator-special-locking-mm.patch
lock-validator-special-locking-slab.patch
lock-validator-special-locking-skb_queue_head_init.patch
lock-validator-special-locking-timerc.patch
lock-validator-special-locking-schedc.patch
lock-validator-special-locking-hrtimerc.patch
lock-validator-special-locking-sock_lock_init.patch
lock-validator-special-locking-af_unix.patch
lock-validator-special-locking-bh_lock_sock.patch
lock-validator-special-locking-mmap_sem.patch
lock-validator-special-locking-sb-s_umount.patch
lock-validator-special-locking-sb-s_umount-fix.patch
lock-validator-special-locking-jbd.patch
lock-validator-special-locking-posix-timers.patch
lock-validator-special-locking-sch_genericc.patch
lock-validator-special-locking-xfrm.patch
lock-validator-special-locking-sound-core-seq-seq_portsc.patch
lock-validator-enable-lock-validator-in-kconfig.patch
lock-validator-enable-lock-validator-in-kconfig-x86-only.patch
lock-validator-special-locking-kgdb.patch
detect-atomic-counter-underflows.patch
debug-shared-irqs.patch
make-frame_pointer-default=y.patch
mutex-subsystem-synchro-test-module.patch
vdso-print-fatal-signals.patch
vdso-improve-print_fatal_signals-support-by-adding-memory-maps.patch
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