lisa/android_kernel_xiaomi_sm8350
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sched: Improve the scheduler

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This change is for general scheduler improvements.

Change-Id: I37d6cb75ca8b08d9ca155b86b7d71ff369f46e14
Signed-off-by: Lingutla Chandrasekhar <clingutla@codeaurora.org>
This commit is contained in:
Lingutla Chandrasekhar 2021-06-30 20:27:44 +05:30 committed by Gerrit - the friendly Code Review server
parent b82eb1e1fa
commit f620062dd6
2 changed files with 21 additions and 2 deletions
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6
kernel/sched/core.c
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@ -3870,8 +3870,12 @@ void scheduler_tick(void)
if (curr->sched_class == &fair_sched_class)
check_for_migration(rq, curr);
if (idle_cpu(cpu) && is_reserved(cpu))
#ifdef CONFIG_SMP
rq_lock(rq, &rf);
if (idle_cpu(cpu) && is_reserved(cpu) && !rq->active_balance)
clear_reserved(cpu);
rq_unlock(rq, &rf);
#endif
trace_android_vh_scheduler_tick(rq);
}

17
kernel/sched/walt/qc_vas.c
View File

@ -48,12 +48,23 @@ void walt_rotate_work_func(struct work_struct *work)
{
struct walt_rotate_work *wr = container_of(work,
struct walt_rotate_work, w);
struct rq *src_rq = cpu_rq(wr->src_cpu), *dst_rq = cpu_rq(wr->dst_cpu);
unsigned long flags;
migrate_swap(wr->src_task, wr->dst_task, wr->dst_cpu, wr->src_cpu);
put_task_struct(wr->src_task);
put_task_struct(wr->dst_task);
local_irq_save(flags);
double_rq_lock(src_rq, dst_rq);
dst_rq->active_balance = 0;
src_rq->active_balance = 0;
double_rq_unlock(src_rq, dst_rq);
local_irq_restore(flags);
clear_reserved(wr->src_cpu);
clear_reserved(wr->dst_cpu);
}
@ -140,7 +151,8 @@ void walt_check_for_rotation(struct rq *src_rq)
dst_rq = cpu_rq(dst_cpu);
double_rq_lock(src_rq, dst_rq);
if (dst_rq->curr->sched_class == &fair_sched_class) {
if (dst_rq->curr->sched_class == &fair_sched_class &&
!src_rq->active_balance && !dst_rq->active_balance) {
get_task_struct(src_rq->curr);
get_task_struct(dst_rq->curr);
@ -153,7 +165,10 @@ void walt_check_for_rotation(struct rq *src_rq)
wr->src_cpu = src_cpu;
wr->dst_cpu = dst_cpu;
dst_rq->active_balance = 1;
src_rq->active_balance = 1;
}
double_rq_unlock(src_rq, dst_rq);
if (wr)