Messages in this thread Patch in this message | | | From | John Stultz <> | Subject | [PATCH 04/11] 2.6.35.x: time: Move common updates to a function | Date | Tue, 17 Jul 2012 14:05:35 -0400 |
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From: Thomas Gleixner <tglx@linutronix.de>
This is a backport of cc06268c6a87db156af2daed6e96a936b955cc82
While not a bugfix itself, it allows following fixes to backport in a more straightforward manner.
CC: Thomas Gleixner <tglx@linutronix.de> CC: Eric Dumazet <eric.dumazet@gmail.com> CC: Richard Cochran <richardcochran@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Linux Kernel <linux-kernel@vger.kernel.org> Signed-off-by: John Stultz <john.stultz@linaro.org> --- kernel/time/timekeeping.c | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-)
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index 5960728..5fbcb9a 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -166,6 +166,18 @@ static struct timespec total_sleep_time; */ struct timespec raw_time; +/* must hold write on xtime_lock */ +static void timekeeping_update(bool clearntp) +{ + if (clearntp) { + timekeeper.ntp_error = 0; + ntp_clear(); + } + update_vsyscall(&xtime, timekeeper.clock, timekeeper.mult); +} + + + /* flag for if timekeeping is suspended */ int __read_mostly timekeeping_suspended; @@ -322,10 +334,7 @@ int do_settimeofday(struct timespec *tv) xtime = *tv; - timekeeper.ntp_error = 0; - ntp_clear(); - - update_vsyscall(&xtime, timekeeper.clock, timekeeper.mult); + timekeeping_update(true); write_sequnlock_irqrestore(&xtime_lock, flags); @@ -863,8 +872,7 @@ void update_wall_time(void) wall_to_monotonic.tv_sec -= leap; } - /* check to see if there is a new clocksource to use */ - update_vsyscall(&xtime, timekeeper.clock, timekeeper.mult); + timekeeping_update(false); } /** -- 1.7.9.5
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