diff options
| author | Olav Haugan <ohaugan@codeaurora.org> | 2014-10-07 17:27:44 -0700 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-23 20:00:52 -0700 |
| commit | 604c41065b982ee94b45233d2da876d873284544 (patch) | |
| tree | 2442322efa6abd32ecb24c9063b2a64a6a83eb8e /kernel | |
| parent | c12a2b5ab9163585020f5cb81d2a0276275ce111 (diff) | |
sched: Add checks for frequency change
We need to check for frequency change when a task is migrated due to
affinity change and during active balance.
Change-Id: I96676db04d34b5b91edd83431c236a1c28166985
Signed-off-by: Olav Haugan <ohaugan@codeaurora.org>
[rameezmustafa@codeaurora.org]: Port to msm-3.18]
Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org
[joonwoop@codeaurora.org: fixed minor conflict in core.c]
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/sched/core.c | 6 | ||||
| -rw-r--r-- | kernel/sched/fair.c | 13 |
2 files changed, 17 insertions, 2 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 45030994b33e..13ae48336c92 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -2659,6 +2659,12 @@ static struct rq *__migrate_task(struct rq *rq, struct task_struct *p, int dest_ src_cpu = cpu_of(rq); rq = move_queued_task(rq, p, dest_cpu); + + if (!same_freq_domain(src_cpu, dest_cpu)) { + check_for_freq_change(rq); + check_for_freq_change(cpu_rq(dest_cpu)); + } + if (task_notify_on_migrate(p)) { struct migration_notify_data mnd; diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index e3ed01a638df..ff9c396dce5b 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -8721,6 +8721,7 @@ static int active_load_balance_cpu_stop(void *data) .flags = 0, .loop = 0, }; + bool moved = false; raw_spin_lock_irq(&busiest_rq->lock); @@ -8751,6 +8752,7 @@ static int active_load_balance_cpu_stop(void *data) cpu_online(target_cpu)) { detach_task(push_task, &env); push_task_detached = 1; + moved = true; } goto out_unlock; } @@ -8768,10 +8770,12 @@ static int active_load_balance_cpu_stop(void *data) schedstat_inc(sd, alb_count); p = detach_one_task(&env); - if (p) + if (p) { schedstat_inc(sd, alb_pushed); - else + moved = true; + } else { schedstat_inc(sd, alb_failed); + } } rcu_read_unlock(); out_unlock: @@ -8796,6 +8800,11 @@ out_unlock: local_irq_enable(); + if (moved && !same_freq_domain(busiest_cpu, target_cpu)) { + check_for_freq_change(busiest_rq); + check_for_freq_change(target_rq); + } + if (per_cpu(dbs_boost_needed, target_cpu)) { struct migration_notify_data mnd; |