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Subject[patch v7 20/21] sched: don't do power balance on share cpu power domain
Date
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 047a1b3..3a0284b 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -3503,7 +3503,7 @@ 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 */
@@ -4410,8 +4410,9 @@ 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


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