evie/android_kernel_oneplus_msm8998
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Merge "sched: don't assume higher capacity means higher power in lb"

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Linux Build Service Account 2016-09-30 18:23:48 -07:00 • committed by Gerrit - the friendly Code Review server
commit 818156d2ac
3 changed files with 10 additions and 8 deletions
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10
kernel/sched/fair.c
View file

@ -7229,9 +7229,7 @@ bail_inter_cluster_balance(struct lb_env *env, struct sd_lb_stats *sds)
local_pwr_cost = cpu_max_power_cost(local_cpu);
busiest_pwr_cost = cpu_max_power_cost(busiest_cpu);
if (local_capacity < busiest_capacity ||
(local_capacity == busiest_capacity &&
local_pwr_cost <= busiest_pwr_cost))
if (local_pwr_cost <= busiest_pwr_cost)
return 0;
if (local_capacity > busiest_capacity &&
@ -8868,9 +8866,6 @@ static inline int find_new_hmp_ilb(int type)
for_each_cpu_and(ilb, nohz.idle_cpus_mask,
sched_domain_span(sd)) {
if (idle_cpu(ilb) && (type != NOHZ_KICK_RESTRICT ||
(hmp_capable() &&
cpu_max_possible_capacity(ilb) <=
cpu_max_possible_capacity(call_cpu)) ||
cpu_max_power_cost(ilb) <=
cpu_max_power_cost(call_cpu))) {
rcu_read_unlock();
@ -9224,8 +9219,7 @@ static inline int _nohz_kick_needed_hmp(struct rq *rq, int cpu, int *type)
if (!sysctl_sched_restrict_cluster_spill || sched_boost())
return 1;
if (hmp_capable() && cpu_max_possible_capacity(cpu) ==
max_possible_capacity)
if (cpu_max_power_cost(cpu) == max_power_cost)
return 1;
rcu_read_lock();

7
kernel/sched/hmp.c
View file

@ -357,6 +357,8 @@ DECLARE_BITMAP(all_cluster_ids, NR_CPUS);
struct sched_cluster *sched_cluster[NR_CPUS];
int num_clusters;
unsigned int max_power_cost = 1;
struct sched_cluster init_cluster = {
.list = LIST_HEAD_INIT(init_cluster.list),
.id = 0,
@ -466,6 +468,7 @@ static void sort_clusters(void)
{
struct sched_cluster *cluster;
struct list_head new_head;
unsigned int tmp_max = 1;
INIT_LIST_HEAD(&new_head);
@ -474,7 +477,11 @@ static void sort_clusters(void)
max_task_load());
cluster->min_power_cost = power_cost(cluster_first_cpu(cluster),
0);
if (cluster->max_power_cost > tmp_max)
tmp_max = cluster->max_power_cost;
}
max_power_cost = tmp_max;
move_list(&new_head, &cluster_head, true);

1
kernel/sched/sched.h
View file

@ -1039,6 +1039,7 @@ extern unsigned int min_capacity;
extern unsigned int max_load_scale_factor;
extern unsigned int max_possible_capacity;
extern unsigned int min_max_possible_capacity;
extern unsigned int max_power_cost;
extern unsigned int sched_upmigrate;
extern unsigned int sched_downmigrate;
extern unsigned int sched_init_task_load_windows;