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

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>

1 files changed, 2 insertions, 6 deletions

diff --git a/mm/percpu.c b/mm/percpu.c
index efe816856a9d..9e16d1c9ebd5 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);
 }
 
 /**