[PATCH] Zero memory more efficiently in mm/percpu.c::pcpu_mem_alloc()

Jesper Juhl
2010-10-29T22:08:51Z

Don't do vmalloc() + memset() when vzalloc() will do.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
---
percpu.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/mm/percpu.c b/mm/percpu.c
index efe8168..8d75223 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -294,9 +294,7 @@ static void *pcpu_mem_alloc(size_t size)
if (size <= PAGE_SIZE)
return kzalloc(size, GFP_KERNEL);
else {
- void *ptr = vmalloc(size);
- if (ptr)
- memset(ptr, 0, size);
+ void *ptr = vzalloc(size);
return ptr;
}
}

--
Jesper Juhl <jj@chaosbits.net> http://www.chaosbits.net/
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