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Date: Sat, 23 Sep 2017 07:04:43 +0800 From: Leo Yan <leo.yan@...aro.org> To: Ingo Molnar <mingo@...hat.com>, Peter Zijlstra <peterz@...radead.org>, linux-kernel@...r.kernel.org Cc: Leo Yan <leo.yan@...aro.org>, Dietmar Eggemann <dietmar.eggemann@....com>, Morten Rasmussen <morten.rasmussen@....com>, Chris Redpath <Chris.Redpath@....com>, Joel Fernandes <joelaf@...gle.com>, Vincent Guittot <vincent.guittot@...aro.org> Subject: [PATCH 1/2] sched/fair: make capacity_margin __read_mostly Variable 'capacity_margin' is used with read operation for most cases to calculate the capacity margin, put it into __read_mostly section. Cc: Dietmar Eggemann <dietmar.eggemann@....com> Cc: Morten Rasmussen <morten.rasmussen@....com> Cc: Chris Redpath <Chris.Redpath@....com> Cc: Joel Fernandes <joelaf@...gle.com> Cc: Vincent Guittot <vincent.guittot@...aro.org> Signed-off-by: Leo Yan <leo.yan@...aro.org> --- kernel/sched/fair.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 70ba32e..ad03bf4 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -129,7 +129,7 @@ unsigned int sysctl_sched_cfs_bandwidth_slice = 5000UL; * * (default: ~20%) */ -unsigned int capacity_margin = 1280; +unsigned int capacity_margin __read_mostly = 1280; static inline void update_load_add(struct load_weight *lw, unsigned long inc) { -- 2.7.4
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