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

Tejun Heo
2010-10-30T13:58:31Z

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

tj: dropped unnecessary temp variable ptr.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Tejun Heo <tj@kernel.org>
---
Applied with slight modification. Thank you.

mm/percpu.c | 8 ++------
1 files changed, 2 insertions(+), 6 deletions(-)

diff --git a/mm/percpu.c b/mm/percpu.c
index efe8168..9e16d1c 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -293,12 +293,8 @@ 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);
- return ptr;
- }
+ else
+ return vzalloc(size);
}

/**
--
1.7.1