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lib: percpu_counter_init_irq

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provide a way to tell lockdep about percpu_counters that are supposed to be
used from irq safe contexts.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Peter Zijlstra 2007-10-16 23:25:46 -07:00 • committed by Linus Torvalds
commit dc62a30e27
2 changed files with 15 additions and 0 deletions
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3
include/linux/percpu_counter.h
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@ -31,6 +31,7 @@ struct percpu_counter {
#endif
int percpu_counter_init(struct percpu_counter *fbc, s64 amount);
int percpu_counter_init_irq(struct percpu_counter *fbc, s64 amount);
void percpu_counter_destroy(struct percpu_counter *fbc);
void percpu_counter_set(struct percpu_counter *fbc, s64 amount);
void __percpu_counter_add(struct percpu_counter *fbc, s64 amount, s32 batch);
@ -84,6 +85,8 @@ static inline int percpu_counter_init(struct percpu_counter *fbc, s64 amount)
return 0;
}
#define percpu_counter_init_irq percpu_counter_init
static inline void percpu_counter_destroy(struct percpu_counter *fbc)
{
}