linux-kernel - [GIT PULL] scheduler fixes

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Message-ID: <aWyvHbgtZeXHIU58@gmail.com>
Date: Sun, 18 Jan 2026 10:59:57 +0100
From: Ingo Molnar <mingo@...nel.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org, Peter Zijlstra <peterz@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Juri Lelli <juri.lelli@...hat.com>,
	Vincent Guittot <vincent.guittot@...aro.org>,
	Dietmar Eggemann <dietmar.eggemann@....com>,
	Steven Rostedt <rostedt@...dmis.org>, Mel Gorman <mgorman@...e.de>,
	Tejun Heo <tj@...nel.org>, Valentin Schneider <vschneid@...hat.com>,
	Shrikanth Hegde <sshegde@...ux.ibm.com>
Subject: [GIT PULL] scheduler fixes

Linus,

Please pull the latest sched/urgent Git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git sched-urgent-2026-01-18

   # HEAD: 627cc25f84466d557d86e5dc67b43a4eea604c80 sched/deadline: Use ENQUEUE_MOVE to allow priority change

Misc DL 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.

 Thanks,

	Ingo

------------------>
Gabriele Monaco (1):
      sched/deadline: Fix server stopping with runnable tasks

Peter Zijlstra (7):
      sched: Provide idle_rq() helper
      sched/deadline: Ensure get_prio_dl() is up-to-date
      sched/deadline: Avoid double update_rq_clock()
      sched: Fold rq-pin swizzle into __balance_callbacks()
      sched: Audit MOVE vs balance_callbacks
      sched: Deadline has dynamic priority
      sched/deadline: Use ENQUEUE_MOVE to allow priority change

Pingfan Liu (2):
      sched/deadline: Remove unnecessary comment in dl_add_task_root_domain()
      sched/deadline: Fix potential race in dl_add_task_root_domain()


 include/linux/sched.h   |  1 -
 kernel/sched/core.c     | 18 +++++++++++-------
 kernel/sched/deadline.c | 36 +++++++++++++++++++-----------------
 kernel/sched/ext.c      |  1 +
 kernel/sched/sched.h    | 27 ++++++++++++++++++++++++++-
 kernel/sched/syscalls.c | 32 ++------------------------------
 6 files changed, 59 insertions(+), 56 deletions(-)