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Miscellaneous scheduler fixes:

Browse source 
- Fix a timestamping bug in pick_task_fair() and
    yield_task_fair() (Zhan Xusheng)
 
  - Skip migrate-disabled tasks when picking a push
    candidate in the RT and DL schedulers (Seiji Nishikawa)
 
  - Skip rq->avg_idle update without a valid idle_stamp
    (Shubhang Kaushik)
 
  - Fix throttling bug in throttle_cfs_rq(), caused
    by the recent single-runqueue conversion (Wanwu Li)
 
  - Fix bandwidth calculation bug in distribute_cfs_runtime(),
    caused by the single-runqueue conversion (Wanwu Li)
 
  - Don't make x86 ITMT enablement depend on debugfs (Mario Limonciello)
 
  - Avoid creating misfits during cache-aware load-balancing
    on hybrid systems (Tim Chen)
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-urgent-2026-09-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler fixes from Ingo Molnar:

 - Fix a timestamping bug in pick_task_fair() and yield_task_fair()
   (Zhan Xusheng)

 - Skip migrate-disabled tasks when picking a push candidate in the
   RT and DL schedulers (Seiji Nishikawa)

 - Skip rq->avg_idle update without a valid idle_stamp (Shubhang
   Kaushik)

 - Fix throttling bug in throttle_cfs_rq(), caused by the recent
   single-runqueue conversion (Wanwu Li)

 - Fix bandwidth calculation bug in distribute_cfs_runtime(),
   caused by the single-runqueue conversion (Wanwu Li)

 - Don't make x86 ITMT enablement depend on debugfs (Mario Limonciello)

 - Avoid creating misfits during cache-aware load-balancing on hybrid
   systems (Tim Chen)

* tag 'sched-urgent-2026-09-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/fair: Avoid creating misfits during cache-aware balancing
  x86/itmt: Don't make ITMT enablement depend on debugfs
  sched/fair: Use cfs_rq->h_curr in distribute_cfs_runtime()
  sched/fair: Use cfs_rq->h_curr in throttle_cfs_rq()
  sched/core: Skip rq->avg_idle update without a valid idle_stamp
  sched/rt,dl: Skip migrate-disabled tasks when picking a push candidate
  sched/fair: Use update_curr_eevdf() for the remaining root cfs_rq callers
This commit is contained in:
Linus Torvalds 2026-09-06 11:08:44 -07:00
commit 88405f0ad1
5 changed files with 64 additions and 22 deletions
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