The patch titled
remove unlikely() in might_sleep_if()
has been added to the -mm tree. Its filename is
remove-unlikely-in-might_sleep_if.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
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 files changed, 1 insertion(+), 1 deletion(-)
diff -puN include/linux/kernel.h~remove-unlikely-in-might_sleep_if include/linux/kernel.h
--- devel/include/linux/kernel.h~remove-unlikely-in-might_sleep_if 2006-04-24 19:15:27.000000000 -0700
+++ devel-akpm/include/linux/kernel.h 2006-04-24 19:15:40.000000000 -0700
@@ -79,7 +79,7 @@ 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
rename-swapper-to-idle.patch
remove-unlikely-in-might_sleep_if.patch
ide-error-handling-fixes.patch
-
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