From mboxrd@z Thu Jan 1 00:00:00 1970 From: vincent.guittot@linaro.org (Vincent Guittot) Date: Fri, 23 May 2014 17:53:00 +0200 Subject: [PATCH v2 06/11] sched: add per rq cpu_power_orig In-Reply-To: <1400860385-14555-1-git-send-email-vincent.guittot@linaro.org> References: <1400860385-14555-1-git-send-email-vincent.guittot@linaro.org> Message-ID: <1400860385-14555-7-git-send-email-vincent.guittot@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org This new field cpu_power_orig reflects the available capacity of a CPUs unlike the cpu_power which reflects the current capacity that can be altered by frequency and rt tasks. Signed-off-by: Vincent Guittot --- kernel/sched/core.c | 2 +- kernel/sched/fair.c | 1 + kernel/sched/sched.h | 1 + 3 files changed, 3 insertions(+), 1 deletion(-) diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 240aa83..686c56f 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -6946,7 +6946,7 @@ void __init sched_init(void) #ifdef CONFIG_SMP rq->sd = NULL; rq->rd = NULL; - rq->cpu_power = SCHED_POWER_SCALE; + rq->cpu_power = rq->cpu_power_orig = SCHED_POWER_SCALE; rq->post_schedule = 0; rq->active_balance = 0; rq->next_balance = jiffies; diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 6dc05f7..b3dc2b3 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -5675,6 +5675,7 @@ static void update_cpu_power(struct sched_domain *sd, int cpu) power >>= SCHED_POWER_SHIFT; + cpu_rq(cpu)->cpu_power_orig = power; sdg->sgp->power_orig = power; if (sched_feat(ARCH_POWER)) diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 600e229..4c74014 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -568,6 +568,7 @@ struct rq { struct sched_domain *sd; unsigned long cpu_power; + unsigned long cpu_power_orig; unsigned char idle_balance; /* For active balancing */ -- 1.9.1