From 6fb43d7b50e49a36f8be3199141bec473e5ecb00 Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Mon, 9 Jul 2007 18:52:01 +0200 Subject: [PATCH] sched: micro-optimize mmdrop() micro-optimize mmdrop(). Improves schedule()'s assembly a bit. Signed-off-by: Ingo Molnar --- include/linux/sched.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/sched.h b/include/linux/sched.h index 785ec8465bd3..cfb680585ab8 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); } -- 2.20.1