]> git.karo-electronics.de Git - linux-beck.git/commit
time: Move clock_was_set_seq update before updating shadow-timekeeper
authorJohn Stultz <john.stultz@linaro.org>
Thu, 11 Jun 2015 22:54:53 +0000 (15:54 -0700)
committerThomas Gleixner <tglx@linutronix.de>
Fri, 12 Jun 2015 08:56:20 +0000 (10:56 +0200)
commitd151832650ed98961a5650e73e85c349ad7839cb
treee21e07316e96f27af8c99cc57b59ff40725b004f
parent45bbfe64ea564a69e56ab6754006eee506224f46
time: Move clock_was_set_seq update before updating shadow-timekeeper

It was reported that 868a3e915f7f5eba (hrtimer: Make offset
update smarter) was causing timer problems after suspend/resume.

The problem with that change is the modification to
clock_was_set_seq in timekeeping_update is done prior to
mirroring the time state to the shadow-timekeeper. Thus the
next time we do update_wall_time() the updated sequence is
overwritten by whats in the shadow copy.

This patch moves the shadow-timekeeper mirroring to the end
of the function, after all updates have been made, so all data
is kept in sync.

(This patch also affects the update_fast_timekeeper calls which
were also problematically done prior to the mirroring).

Reported-and-tested-by: Jeremiah Mahler <jmmahler@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Cc: Preeti U Murthy <preeti@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Link: http://lkml.kernel.org/r/1434063297-28657-2-git-send-email-john.stultz@linaro.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
kernel/time/timekeeping.c