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sched: Simplify ttwu_runnable()

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Note that both proxy and delayed tasks have ->is_blocked set. Use this one
condition to guard both paths.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20260526113322.714832584%40infradead.org
This commit is contained in:
Peter Zijlstra
2026-05-26 12:00:59 +02:00
parent c0404dd88d
commit 56e50ff567
1 changed files with 6 additions and 7 deletions
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13
kernel/sched/core.c
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@@ -3764,9 +3764,6 @@ static inline void proxy_reset_donor(struct rq *rq)
*/
static inline bool proxy_needs_return(struct rq *rq, struct task_struct *p)
{
if (!p->is_blocked)
return false;
/*
* Typically per __set_task_cpu(), task_cpu(p) == p->wake_cpu.
*
@@ -3875,10 +3872,12 @@ static int ttwu_runnable(struct task_struct *p, int wake_flags)
return 0;
update_rq_clock(rq);
if (p->se.sched_delayed)
enqueue_task(rq, p, ENQUEUE_NOCLOCK | ENQUEUE_DELAYED);
if (proxy_needs_return(rq, p))
return 0;
if (p->is_blocked) {
if (p->se.sched_delayed)
enqueue_task(rq, p, ENQUEUE_NOCLOCK | ENQUEUE_DELAYED);
if (proxy_needs_return(rq, p))
return 0;
}
if (!task_on_cpu(rq, p)) {
/*
* When on_rq && !on_cpu the task is preempted, see if