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sched: Remove double calculation in fix_small_imbalance()
author
Vincent Guittot
<vincent.guittot@linaro.org>
Tue, 11 Mar 2014 16:26:06 +0000
(17:26 +0100)
committer
Ingo Molnar
<mingo@kernel.org>
Wed, 12 Mar 2014 09:49:00 +0000
(10:49 +0100)
The tmp value has been already calculated in:
scaled_busy_load_per_task =
(busiest->load_per_task * SCHED_POWER_SCALE) /
busiest->group_power;
Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link:
http://lkml.kernel.org/r/1394555166-22894-1-git-send-email-vincent.guittot@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
kernel/sched/fair.c
patch
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diff --git
a/kernel/sched/fair.c
b/kernel/sched/fair.c
index
f1eedae
..
b301918
100644
(file)
--- a/
kernel/sched/fair.c
+++ b/
kernel/sched/fair.c
@@
-6061,12
+6061,10
@@
void fix_small_imbalance(struct lb_env *env, struct sd_lb_stats *sds)
pwr_now /= SCHED_POWER_SCALE;
/* Amount of load we'd subtract */
- tmp = (busiest->load_per_task * SCHED_POWER_SCALE) /
- busiest->group_power;
- if (busiest->avg_load > tmp) {
+ if (busiest->avg_load > scaled_busy_load_per_task) {
pwr_move += busiest->group_power *
min(busiest->load_per_task,
- busiest->avg_load -
tmp
);
+ busiest->avg_load -
scaled_busy_load_per_task
);
}
/* Amount of load we'd add */