[PATCH] arch: sparc: kernel: smp_64.c: Optimization of the Code

From: Rickard Strandqvist
Date: Sun Jun 01 2014 - 17:47:30 EST


>From what I know, AND is faster then modulo.
Not sure if this is worth changing though.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@xxxxxxxxxxxxxxxxxx>
---
arch/sparc/kernel/smp_64.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c
index 745a363..921d924 100644
--- a/arch/sparc/kernel/smp_64.c
+++ b/arch/sparc/kernel/smp_64.c
@@ -179,7 +179,7 @@ static inline long get_delta (long *rt, long *master)

/* average best_t0 and best_t1 without overflow: */
tcenter = (best_t0/2 + best_t1/2);
- if (best_t0 % 2 + best_t1 % 2 == 2)
+ if ((best_t0 & 1) + (best_t1 & 1) == 2)
tcenter++;
return tcenter - best_tm;
}
--
1.7.10.4

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