[PATCH v2 06/11] sched: add per rq cpu_power_orig
Vincent Guittot
vincent.guittot at linaro.org
Fri May 23 08:53:00 PDT 2014
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 <vincent.guittot at 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 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
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