Linus Torvalds 2e3f3090bd sched_ext: Fixes for v6.13-rc6
- Fix corner case bug where ops.dispatch() couldn't extend the execution of
   the current task if SCX_OPS_ENQ_LAST is set.
 
 - Fix ops.cpu_release() not being called when a SCX task is preempted by a
   higher priority sched class task.
 
 - Fix buitin idle mask being incorrectly left as busy after an idle CPU is
   picked and kicked.
 
 - scx_ops_bypass() was unnecessarily using rq_lock() which comes with rq
   pinning related sanity checks which could trigger spuriously. Switch to
   raw_spin_rq_lock().
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Merge tag 'sched_ext-for-6.13-rc6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext

Pull sched_ext fixes from Tejun Heo:

 - Fix corner case bug where ops.dispatch() couldn't extend the
   execution of the current task if SCX_OPS_ENQ_LAST is set.

 - Fix ops.cpu_release() not being called when a SCX task is preempted
   by a higher priority sched class task.

 - Fix buitin idle mask being incorrectly left as busy after an idle CPU
   is picked and kicked.

 - scx_ops_bypass() was unnecessarily using rq_lock() which comes with
   rq pinning related sanity checks which could trigger spuriously.
   Switch to raw_spin_rq_lock().

* tag 'sched_ext-for-6.13-rc6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext:
  sched_ext: idle: Refresh idle masks during idle-to-idle transitions
  sched_ext: switch class when preempted by higher priority scheduler
  sched_ext: Replace rq_lock() to raw_spin_rq_lock() in scx_ops_bypass()
  sched_ext: keep running prev when prev->scx.slice != 0
2025-01-10 15:11:58 -08:00
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