From: Alex Shi <alex.shi@intel.com>
To: mingo@redhat.com, peterz@infradead.org, tglx@linutronix.de,
akpm@linux-foundation.org, arjan@linux.intel.com, bp@alien8.de,
pjt@google.com, namhyung@kernel.org, efault@gmx.de
Cc: vincent.guittot@linaro.org, gregkh@linuxfoundation.org,
preeti@linux.vnet.ibm.com, viresh.kumar@linaro.org,
linux-kernel@vger.kernel.org, alex.shi@intel.com
Subject: [patch v6 21/21] sched: don't do power balance on share cpu power domain
Date: Sat, 30 Mar 2013 22:35:08 +0800 [thread overview]
Message-ID: <1364654108-16307-22-git-send-email-alex.shi@intel.com> (raw)
In-Reply-To: <1364654108-16307-1-git-send-email-alex.shi@intel.com>
Packing tasks among such domain can't save power, just performance
losing. So no power balance on them.
Signed-off-by: Alex Shi <alex.shi@intel.com>
---
kernel/sched/fair.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 430904b..88c8bd6 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -3513,7 +3513,7 @@ static int get_cpu_for_power_policy(struct sched_domain *sd, int cpu,
policy = get_sd_sched_balance_policy(sd, cpu, p, sds);
if (policy != SCHED_POLICY_PERFORMANCE && sds->group_leader) {
- if (wakeup)
+ if (wakeup && !(sd->flags & SD_SHARE_CPUPOWER))
new_cpu = find_leader_cpu(sds->group_leader,
p, cpu, policy);
/* for fork balancing and a little busy task */
@@ -4420,8 +4420,9 @@ static unsigned long task_h_load(struct task_struct *p)
static inline void init_sd_lb_power_stats(struct lb_env *env,
struct sd_lb_stats *sds)
{
- if (sched_balance_policy == SCHED_POLICY_PERFORMANCE ||
- env->idle == CPU_NOT_IDLE) {
+ if (sched_balance_policy == SCHED_POLICY_PERFORMANCE
+ || env->sd->flags & SD_SHARE_CPUPOWER
+ || env->idle == CPU_NOT_IDLE) {
env->flags &= ~LBF_POWER_BAL;
env->flags |= LBF_PERF_BAL;
return;
--
1.7.12
next prev parent reply other threads:[~2013-03-30 14:36 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-30 14:34 [patch v6 0/21] sched: power aware scheduling Alex Shi
2013-03-30 14:34 ` [patch v6 01/21] Revert "sched: Introduce temporary FAIR_GROUP_SCHED dependency for load-tracking" Alex Shi
2013-03-30 14:34 ` [patch v6 02/21] sched: set initial value of runnable avg for new forked task Alex Shi
2013-03-30 14:34 ` [patch v6 03/21] sched: only count runnable avg on cfs_rq's nr_running Alex Shi
2013-04-02 14:30 ` Vincent Guittot
2013-04-03 1:02 ` Alex Shi
2013-04-03 1:23 ` Paul Turner
2013-04-03 2:12 ` Alex Shi
2013-03-30 14:34 ` [patch v6 04/21] sched: add sched balance policies in kernel Alex Shi
2013-03-30 14:34 ` [patch v6 05/21] sched: add sysfs interface for sched_balance_policy selection Alex Shi
2013-03-30 14:34 ` [patch v6 06/21] sched: log the cpu utilization at rq Alex Shi
2013-03-30 14:34 ` [patch v6 07/21] sched: add new sg/sd_lb_stats fields for incoming fork/exec/wake balancing Alex Shi
2013-03-30 14:34 ` [patch v6 08/21] sched: move sg/sd_lb_stats struct ahead Alex Shi
2013-03-30 14:34 ` [patch v6 09/21] sched: scale_rt_power rename and meaning change Alex Shi
2013-03-30 14:34 ` [patch v6 10/21] sched: get rq potential maximum utilization Alex Shi
2013-04-02 9:02 ` Namhyung Kim
2013-04-02 13:38 ` Alex Shi
2013-04-03 2:15 ` Alex Shi
2013-04-03 2:22 ` Paul Turner
2013-04-03 2:35 ` Alex Shi
2013-04-03 8:07 ` Alex Shi
2013-04-02 14:38 ` Vincent Guittot
2013-04-03 1:11 ` Alex Shi
2013-03-30 14:34 ` [patch v6 11/21] sched: detect wakeup burst with rq->avg_idle Alex Shi
2013-04-03 8:12 ` Alex Shi
2013-03-30 14:34 ` [patch v6 12/21] sched: add power aware scheduling in fork/exec/wake Alex Shi
2013-04-01 9:50 ` Preeti U Murthy
2013-04-01 13:43 ` Alex Shi
2013-03-30 14:35 ` [patch v6 13/21] sched: using avg_idle to detect bursty wakeup Alex Shi
2013-04-03 5:08 ` Namhyung Kim
2013-04-03 5:41 ` Alex Shi
2013-04-03 8:10 ` Alex Shi
2013-03-30 14:35 ` [patch v6 14/21] sched: packing transitory tasks in wakeup power balancing Alex Shi
2013-03-30 14:35 ` [patch v6 15/21] sched: add power/performance balance allow flag Alex Shi
2013-03-30 14:35 ` [patch v6 16/21] sched: pull all tasks from source group Alex Shi
2013-03-30 14:35 ` [patch v6 17/21] sched: no balance for prefer_sibling in power scheduling Alex Shi
2013-03-30 14:35 ` [patch v6 18/21] sched: add new members of sd_lb_stats Alex Shi
2013-03-30 14:35 ` [patch v6 19/21] sched: power aware load balance Alex Shi
2013-03-30 14:35 ` [patch v6 20/21] sched: lazy power balance Alex Shi
2013-03-30 14:35 ` Alex Shi [this message]
2013-04-01 5:05 ` [patch v6 0/21] sched: power aware scheduling Michael Wang
2013-04-01 6:17 ` Alex Shi
2013-04-01 6:20 ` Alex Shi
2013-04-03 8:17 ` Alex Shi
2013-04-04 0:57 ` Alex Shi
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