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ANDROID: vendor_hooks: add two hooks for lazy preemption

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add some changes to achieve the lazy preemption feature in our baseline.
- android_vh_read_lazy_flag
- android_vh_set_tsk_need_resched_lazy
Bug: 336982374

Change-Id: I09f1110a2a11da4dbf0d4d0cca3500d1a6ee6a74
Signed-off-by: xieliujie <xieliujie@oppo.com>
This commit is contained in:
xieliujie 2024-04-26 10:02:17 +08:00 • committed by Todd Kjos
parent 6364d59412
commit 14f07c1db0
4 changed files with 21 additions and 2 deletions
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6
kernel/sched/core.c
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@ -1043,13 +1043,17 @@ void wake_up_q(struct wake_q_head *head)
void resched_curr(struct rq *rq)
{
struct task_struct *curr = rq->curr;
int cpu;
int cpu, need_lazy = 0;
lockdep_assert_rq_held(rq);
if (test_tsk_need_resched(curr))
return;
trace_android_vh_set_tsk_need_resched_lazy(curr, rq, &need_lazy);
if (need_lazy)
return;
cpu = cpu_of(rq);
if (cpu == smp_processor_id()) {