[patch 0/8] hrtimers: Overhaul the clock_was_set() logic

[Thomas Gleixner <tglx@linutronix.de>]

A recent patch from Marcelo to avoid IPIs when the clock was set

  https://lore.kernel.org/r/20210407135301.GA16985@fuller.cnet

made me look deeper into this.

That mechanism has caught some dust and bitrot over time and just making
clock_was_set() a little bit smarter does not make the code any better.

The following series addresses this by:

 - Fixing the cases where the clock_was_set() handling is incorrect
   depending on configuration or runtime conditions.

 - Distangle the resume notification and the clock-was-set mechanism
   to prepare for IPI avoidance

 - Adopt Marcelo's patch to the modified code and add some more smarts on
   top.

The series is also available from git:

  git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git hrtimer

Thanks,

	tglx
---
 fs/timerfd.c                |   16 +++
 include/linux/hrtimer.h     |    8 -
 kernel/time/hrtimer.c       |  217 ++++++++++++++++++++++++++++++++------------
 kernel/time/tick-common.c   |    7 +
 kernel/time/tick-internal.h |   12 ++
 kernel/time/timekeeping.c   |   36 ++++---
 6 files changed, 219 insertions(+), 77 deletions(-)