From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Tue, 19 Nov 2024 18:18:45 +0000 (-0800)
Subject: Merge tag 'csd-lock.2024.11.16a' of git://git.kernel.org/pub/scm/linux/kernel/git... 
X-Git-Tag: v6.13-rc1~199
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=311e062ad504bdf49e93cb88a22ba04d5134111c;p=thirdparty%2Fkernel%2Flinux.git

Merge tag 'csd-lock.2024.11.16a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu

Pull CSD-lock update from Paul McKenney:
 "This switches from sched_clock() to ktime_get_mono_fast_ns(), which on
  x86 switches from the rdtsc instruction to the rdtscp instruction,
  thus avoiding instruction reorderings that cause false-positive
  reports of CSD-lock stalls of almost 2^46 nanoseconds. These false
  positives are rare, but really are seen in the wild"

* tag 'csd-lock.2024.11.16a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu:
  locking/csd-lock: Switch from sched_clock() to ktime_get_mono_fast_ns()
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311e062ad504bdf49e93cb88a22ba04d5134111c