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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>
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
Signed-off-by: Sai Harshini Nimmala <snimmala@codeaurora.org>
This commit is contained in:
Abhijeet Dharmapurikar 2021-11-03 14:15:57 -07:00 committed by Rishabh Bhatnagar
parent 6bff8ea110
commit 66317940e6
1 changed files with 17 additions and 2 deletions
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19
kernel/sched/walt/walt_lb.c
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@ -103,12 +103,21 @@ static void walt_lb_rotate_work_func(struct work_struct *work)
{
struct walt_lb_rotate_work *wr = container_of(work,
struct walt_lb_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);
}
@ -195,7 +204,8 @@ static void walt_lb_check_for_rotation(struct rq *src_rq)
dst_rq = cpu_rq(dst_cpu);
double_rq_lock(src_rq, dst_rq);
if (walt_fair_task(dst_rq->curr)) {
if (walt_fair_task(dst_rq->curr) &&
!src_rq->active_balance && !dst_rq->active_balance) {
get_task_struct(src_rq->curr);
get_task_struct(dst_rq->curr);
@ -208,6 +218,9 @@ static void walt_lb_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);
@ -505,8 +518,10 @@ void walt_lb_tick(struct rq *rq)
struct walt_rq *wrq = (struct walt_rq *) rq->android_vendor_data1;
struct walt_task_struct *wts = (struct walt_task_struct *) p->android_vendor_data1;
if (available_idle_cpu(prev_cpu) && is_reserved(prev_cpu))
raw_spin_lock(&rq->__lock);
if (available_idle_cpu(prev_cpu) && is_reserved(prev_cpu) && !rq->active_balance)
clear_reserved(prev_cpu);
raw_spin_unlock(&rq->__lock);
if (!walt_fair_task(p))
return;