[PATCH v5 06/12] sched: add per rq cpu_capacity_orig
From: vincent.guittot@linaro.org (Vincent Guittot)
Date: 2014-08-26 11:09:57
Also in:
lkml
Subsystem:
scheduler, the rest · Maintainers:
Ingo Molnar, Peter Zijlstra, Juri Lelli, Vincent Guittot, Linus Torvalds
This new field cpu_capacity_orig reflects the available capacity of a CPUs unlike the cpu_capacity which reflects the current capacity that can be altered by frequency and rt tasks. Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org> --- 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 a394f99..7c3b237 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c@@ -7003,7 +7003,7 @@ void __init sched_init(void) #ifdef CONFIG_SMP rq->sd = NULL; rq->rd = NULL; - rq->cpu_capacity = SCHED_CAPACITY_SCALE; + rq->cpu_capacity = rq->cpu_capacity_orig = SCHED_CAPACITY_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 8176bda..17c16cc 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c@@ -5756,6 +5756,7 @@ static void update_cpu_capacity(struct sched_domain *sd, int cpu) capacity >>= SCHED_CAPACITY_SHIFT; + cpu_rq(cpu)->cpu_capacity_orig = capacity; sdg->sgc->capacity_orig = capacity; if (sched_feat(ARCH_CAPACITY))
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index aa0f73b..7c0a74e 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h@@ -575,6 +575,7 @@ struct rq { struct sched_domain *sd; unsigned long cpu_capacity; + unsigned long cpu_capacity_orig; unsigned char idle_balance; /* For active balancing */
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1.9.1