[PATCH 0/7] 3.4-stable: Fix for leapsecond caused hrtimer/futex issue
From: John Stultz
Date: Tue Jul 17 2012 - 02:42:24 EST
Here is backport of the leapsecond fixes to 3.4-stable. These are very
straight forward, and backported to 3.4.x with no collisions or changes.
This patchset resolve the early hrtimer/futex expiration issue
widely seen after the June 30th leapsecond.
I've booted and tested this patchset on two boxes and run through a number
of leapsecond related stress tests. However, additional testing and review
would be appreciated.
The original commits backported in this set are:
f55a6faa384304c89cfef162768e88374d3312cb hrtimer: Provide clock_was_set_delayed()
4873fa070ae84a4115f0b3c9dfabc224f1bc7c51 timekeeping: Fix leapsecond triggered load spike issue
5b9fe759a678e05be4937ddf03d50e950207c1c0 timekeeping: Maintain ktime_t based offsets for hrtimers
196951e91262fccda81147d2bcf7fdab08668b40 hrtimers: Move lock held region in hrtimer_interrupt()
f6c06abfb3972ad4914cef57d8348fcb2932bc3b timekeeping: Provide hrtimer update function
5baefd6d84163443215f4a99f6a20f054ef11236 hrtimer: Update hrtimer base offsets each hrtimer_interrupt
3e997130bd2e8c6f5aaa49d6e3161d4d29b43ab0 timekeeping: Add missing update call in timekeeping_resume()
I've already done backports to all the stable kernels to 2.6.32,
and will be sending them out shortly.
Please let me know if you have any comments or feedback.
Cc: Prarit Bhargava <prarit@xxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Linux Kernel <linux-kernel@xxxxxxxxxxxxxxx>
John Stultz (3):
3.4.x: hrtimer: Provide clock_was_set_delayed()
3.4.x: timekeeping: Fix leapsecond triggered load spike issue
3.4.x: hrtimer: Update hrtimer base offsets each hrtimer_interrupt
Thomas Gleixner (4):
3.4.x: timekeeping: Maintain ktime_t based offsets for hrtimers
3.4.x: hrtimers: Move lock held region in hrtimer_interrupt()
3.4.x: timekeeping: Provide hrtimer update function
3.4.x: timekeeping: Add missing update call in timekeeping_resume()
include/linux/hrtimer.h | 10 ++++++-
kernel/hrtimer.c | 53 +++++++++++++++++++++++++------------
kernel/time/timekeeping.c | 64 +++++++++++++++++++++++++++++++++++++++++++--
3 files changed, 108 insertions(+), 19 deletions(-)
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