linux-kernel - [GIT PULL] timer subsystem fix

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Message-ID: <aL1gCBN1MlhGPAja@gmail.com>
Date: Sun, 7 Sep 2025 12:35:52 +0200
From: Ingo Molnar <mingo@...nel.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Anna-Maria Behnsen <anna-maria@...utronix.de>,
	Frederic Weisbecker <frederic@...nel.org>,
	Waiman Long <longman@...hat.com>
Subject: [GIT PULL] timer subsystem fix

Linus,

Please pull the latest timers/urgent Git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git timers-urgent-2025-09-07

   # HEAD: 762af5a2aa0ad18da1316666dae30d369268d44c vdso/vsyscall: Avoid slow division loop in auxiliary clock update

Fix a severe slowdown regression in the timer vDSO code related
to the while() loop in __iter_div_u64_rem(), when the AUX-clock
is enabled.

 Thanks,

	Ingo

------------------>
Thomas Weißschuh (1):
      vdso/vsyscall: Avoid slow division loop in auxiliary clock update


 include/linux/timekeeper_internal.h |  9 ++++++++-
 kernel/time/timekeeping.c           | 10 ++++++++--
 kernel/time/vsyscall.c              |  4 ++--
 3 files changed, 18 insertions(+), 5 deletions(-)