Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6fb43d7b50e49a36f8be3199141bec473e5ecb00
Commit: 6fb43d7b50e49a36f8be3199141bec473e5ecb00
Parent: 9c4801cebc2add1fe514bc8eb201b16372eee11a
Author: Ingo Molnar <[EMAIL PROTECTED]>
AuthorDate: Mon Jul 9 18:52:01 2007 +0200
Committer: Ingo Molnar <[EMAIL PROTECTED]>
CommitDate: Mon Jul 9 18:52:01 2007 +0200
sched: micro-optimize mmdrop()
micro-optimize mmdrop(). Improves schedule()'s assembly a bit.
Signed-off-by: Ingo Molnar <[EMAIL PROTECTED]>
---
include/linux/sched.h | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 785ec84..cfb6805 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);
}
-
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