Kuba Piecuch 0e2f4ab68a sched_ext: Skip ops.set_weight() for disabled tasks ... When switching a task's sched_class away from sched_ext, we get the following sequence of events in __sched_setscheduler(): sched_change_begin() switched_from_scx() scx_disable_task(p) ops.disable(p) __setscheduler_params() set_load_weight() reweight_task_scx(p) ops.set_weight(p) p->sched_class = next_class; sched_change_end() ... Notably, ops.set_weight() is called _after_ ops.disable(). This violates the expected semantics of the callbacks, the expectation being that ops.disable() can only be followed by ops.exit_task() or ops.enable(). Skipping the weight adjustment for disabled tasks should be harmless since the weight will be recalculated in scx_enable_task() if the task ever rejoins SCX. Fixes: 637b068282 ("sched: Fold sched_class::switch{ing,ed}_{to,from}() into the change pattern") Cc: stable@vger.kernel.org # v6.19+ Signed-off-by: Kuba Piecuch <jpiecuch@google.com> Signed-off-by: Tejun Heo <tj@kernel.org>		2026-07-10 06:41:28 -10:00
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arena.c
arena.h
cid.c
cid.h	sched_ext: Move shared helpers from ext.c into internal.h and cid.h	2026-06-22 10:41:34 -10:00
ext.c	sched_ext: Skip ops.set_weight() for disabled tasks	2026-07-10 06:41:28 -10:00
ext.h
idle.c
idle.h
internal.h	sched_ext: Check remote rq eligibility under task's rq lock	2026-06-24 12:04:53 -10:00
types.h