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authorIngo Molnar <mingo@elte.hu>2007-07-09 18:52:01 +0200
committerIngo Molnar <mingo@elte.hu>2007-07-09 18:52:01 +0200
commit6fb43d7b50e49a36f8be3199141bec473e5ecb00 (patch)
treef63f0a9b8279dcd6cd4acf9e99b88d9c60d95c61
parent9c4801cebc2add1fe514bc8eb201b16372eee11a (diff)
sched: micro-optimize mmdrop()
micro-optimize mmdrop(). Improves schedule()'s assembly a bit. Signed-off-by: Ingo Molnar <mingo@elte.hu>
-rw-r--r--include/linux/sched.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 785ec8465bd..cfb680585ab 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1514,7 +1514,7 @@ extern struct mm_struct * mm_alloc(void);
extern void FASTCALL(__mmdrop(struct mm_struct *));
static inline void mmdrop(struct mm_struct * mm)
{
- if (atomic_dec_and_test(&mm->mm_count))
+ if (unlikely(atomic_dec_and_test(&mm->mm_count)))
__mmdrop(mm);
}