The patch titled
remove unlikely() in might_sleep_if()
has been removed from the -mm tree. Its filename is
remove-unlikely-in-might_sleep_if.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: remove unlikely() in might_sleep_if()
From: Hua Zhong <hzhong@xxxxxxxxx>
The likely() profiling tools show that __alloc_page() causes a lot of misses:
! 132 119193 __alloc_pages():mm/page_alloc.c@937
Because most __alloc_page() calls are not atomic.
Signed-off-by: Hua Zhong <hzhong@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
include/linux/kernel.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN include/linux/kernel.h~remove-unlikely-in-might_sleep_if include/linux/kernel.h
--- a/include/linux/kernel.h~remove-unlikely-in-might_sleep_if
+++ a/include/linux/kernel.h
@@ -78,7 +78,7 @@ extern int cond_resched(void);
# define might_sleep() do { might_resched(); } while (0)
#endif
-#define might_sleep_if(cond) do { if (unlikely(cond)) might_sleep(); } while (0)
+#define might_sleep_if(cond) do { if (cond) might_sleep(); } while (0)
#define abs(x) ({ \
int __x = (x); \
_
Patches currently in -mm which might be from hzhong@xxxxxxxxx are
origin.patch
ide-error-handling-fixes.patch
profile-likely-unlikely-macros.patch
-
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