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>

diff --git a/mm/percpu.c b/mm/percpu.c
index efe816856a9d777b284f8bf25cc7548154f374d6..9e16d1c9ebd5e6a05cf91ce21f4b9a248f7d3d4b 100644 (file)
--- 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);
 }
 
 /**