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locking, percpu_counter: Annotate ::lock as raw

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The percpu_counter::lock can be taken in atomic context and therefore
cannot be preempted on -rt - annotate it.

In mainline this change documents the low level nature of
the lock - otherwise there's no functional difference. Lockdep
and Sparse checking will work as usual.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Thomas Gleixner
2009-07-25 16:21:48 +02:00
committed by Ingo Molnar
parent ec484608c5
commit f032a45081
2 changed files with 10 additions and 10 deletions
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2
include/linux/percpu_counter.h
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@@ -16,7 +16,7 @@
#ifdef CONFIG_SMP
struct percpu_counter {
spinlock_t lock;
raw_spinlock_t lock;
s64 count;
#ifdef CONFIG_HOTPLUG_CPU
struct list_head list; /* All percpu_counters are on a list */