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837c8180e3
Pull scheduler fixes from Ingo Molnar:
"Misc deadline scheduler fixes, mainly for a new category of bugs that
were discovered and fixed recently:
- Fix a race condition in the DL server
- Fix a DL server bug which can result in incorrectly going idle when
there's work available
- Fix DL server bug which triggers a WARN() due to broken
get_prio_dl() logic and subsequent misbehavior
- Fix double update_rq_clock() calls
- Fix setscheduler() assumption about static priorities
- Make sure balancing callbacks are always called
- Plus a handful of preparatory commits for the fixes"
* tag 'sched-urgent-2026-01-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/deadline: Use ENQUEUE_MOVE to allow priority change
sched: Deadline has dynamic priority
sched: Audit MOVE vs balance_callbacks
sched: Fold rq-pin swizzle into __balance_callbacks()
sched/deadline: Avoid double update_rq_clock()
sched/deadline: Ensure get_prio_dl() is up-to-date
sched/deadline: Fix server stopping with runnable tasks
sched: Provide idle_rq() helper
sched/deadline: Fix potential race in dl_add_task_root_domain()
sched/deadline: Remove unnecessary comment in dl_add_task_root_domain()