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@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 5b20b27..8513f83 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -6911,7 +6911,7 @@ 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 7387c05..f1e4db6 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -5611,6 +5611,7 @@ 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 46c3784..2abdf5c 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -578,6 +578,7 @@ struct rq { struct sched_domain *sd;
unsigned long cpu_power; + unsigned long cpu_power_orig;
unsigned char idle_balance; /* For active balancing */