[PATCH] mm: percpu: micro-optimize round-to-even

From: Rasmus Villemoes
Date: Thu Jun 19 2014 - 06:02:54 EST


This change shaves a few bytes off the generated code.

Signed-off-by: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx>
---
mm/percpu.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/mm/percpu.c b/mm/percpu.c
index 2ddf9a9..978097f 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -720,8 +720,7 @@ static void __percpu *pcpu_alloc(size_t size, size_t align, bool reserved)
if (unlikely(align < 2))
align = 2;

- if (unlikely(size & 1))
- size++;
+ size += size & 1;

if (unlikely(!size || size > PCPU_MIN_UNIT_SIZE || align > PAGE_SIZE)) {
WARN(true, "illegal size (%zu) or align (%zu) for "
--
1.9.2

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