[PATCH 0/3] [QUANTAL] (pre-upstream) Potential fix for leapsecond caused futex issue

[Brad Figg]

BugLink: http://bugs.launchpad.net/bugs/1020285

These patches are not yet in Linus' tree. Given that there will not be
an additional leap-second added for some time to come, it may be better
to just wait for these patches to reach Linus' tree.

John Stultz <john.stultz at linaro.org> has put together a 3 patch set to
address the leapsecond bug that was encountered this past weekend by
some sites.

This set has had some testing by a few people. This patch set in in
the process of being reviewed upstream on lkml. I have been running
a Quantal kernel with these patches applied. I am able to detect the
issue with an unpatched kernel. I ran the leap-second test app and
stress on a server system for 24+ hours without detecting the leap-second
issue. The patchset has also received an ack by an upstream tester
that had found issues with previous versions of this patcheset.

The following mailing list thread covers this patch set and the discussions
around them:
    https://lkml.org/lkml/2012/7/4/78

John Stultz (3):
  hrtimer: Fix clock_was_set so it is safe to call from irq context
  time: Fix leapsecond triggered hrtimer/futex load spike issue
  hrtimer: Update hrtimer base offsets each hrtimer_interrupt

 include/linux/hrtimer.h   |    3 +++
 kernel/hrtimer.c          |   31 +++++++++++++++++++++++++++----
 kernel/time/timekeeping.c |   38 ++++++++++++++++++++++++++++++++++++++
 3 files changed, 68 insertions(+), 4 deletions(-)

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1.7.9.5