From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Sat, 7 Feb 2026 17:10:42 +0000 (-0800)
Subject: Merge tag 'sched-urgent-2026-02-07' of git://git.kernel.org/pub/scm/linux/kernel... 
X-Git-Tag: v6.19~5
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dda5df9823630a26ed24ca9150b33a7f56ba4546;p=thirdparty%2Fkernel%2Flinux.git

Merge tag 'sched-urgent-2026-02-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler fixes from Ingo Molnar:
 "Miscellaneous MMCID fixes to address bugs and performance regressions
  in the recent rewrite of the SCHED_MM_CID management code:

   - Fix livelock triggered by BPF CI testing

   - Fix hard lockup on weakly ordered systems

   - Simplify the dropping of CIDs in the exit path by removing an
     unintended transition phase

   - Fix performance/scalability regression on a thread-pool benchmark
     by optimizing transitional CIDs when scheduling out"

* tag 'sched-urgent-2026-02-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/mmcid: Optimize transitional CIDs when scheduling out
  sched/mmcid: Drop per CPU CID immediately when switching to per task mode
  sched/mmcid: Protect transition on weakly ordered systems
  sched/mmcid: Prevent live lock on task to CPU mode transition
---

dda5df9823630a26ed24ca9150b33a7f56ba4546