[prev in list] [next in list] [prev in thread] [next in thread]
List: linaro-kernel
Subject: [PATCH v3 06/12] sched: add per rq cpu_power_orig
From: Vincent Guittot <vincent.guittot () linaro ! org>
Date: 2014-06-30 16:05:37
Message-ID: 1404144343-18720-7-git-send-email-vincent.guittot () linaro ! org
[Download RAW message or body]
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 54f5722..92dd6d1 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -6964,7 +6964,7 @@ 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 f0bba5f..7dff578 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -5671,6 +5671,7 @@ 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 2f86361..7b311de 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -568,6 +568,7 @@ struct rq {
struct sched_domain *sd;
unsigned long cpu_capacity;
+ unsigned long cpu_capacity_orig;
unsigned char idle_balance;
/* For active balancing */
--
1.9.1
_______________________________________________
linaro-kernel mailing list
linaro-kernel@lists.linaro.org
http://lists.linaro.org/mailman/listinfo/linaro-kernel
[prev in list] [next in list] [prev in thread] [next in thread]
Configure |
About |
News |
Add a list |
Sponsored by KoreLogic