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| author | John Stultz <jstultz@google.com> | 2026-05-15 02:47:17 +0300 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2026-05-19 13:17:39 +0300 |
| commit | 04f80f8b12a02fa2e0827c8f37eb357adca8ce44 (patch) | |
| tree | 8e40be4f3cdf89f96cd5758f08375cb646ba713f | |
| parent | 61ea17a63719bac51e1bc50eb39fc637f0fdc06e (diff) | |
| download | linux-04f80f8b12a02fa2e0827c8f37eb357adca8ce44.tar.xz | |
sched: Switch rq->next_class on proxy_resched_idle()
K Prateek noticed we weren't setting the rq->next_class in
proxy_resched_idle(), when I was debugging an issue seen with
CONFIG_SCHED_PROXY_EXEC and some of Peter's new patches, and
suggested this fix.
So set rq->next_class when we temporarily switch the donor to
idle, so we don't accidentally call wakeup_preempt_fair()
with idle as the donor.
Suggested-by: K Prateek Nayak <kprateek.nayak@amd.com>
Signed-off-by: John Stultz <jstultz@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20260514234732.3170197-1-jstultz@google.com
| -rw-r--r-- | kernel/sched/core.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 3ae5f19c1b7e..77f4ebe8f5c7 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -6653,6 +6653,7 @@ static inline void proxy_set_task_cpu(struct task_struct *p, int cpu) static inline struct task_struct *proxy_resched_idle(struct rq *rq) { put_prev_set_next_task(rq, rq->donor, rq->idle); + rq->next_class = &idle_sched_class; rq_set_donor(rq, rq->idle); set_tsk_need_resched(rq->idle); return rq->idle; |