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authorJohn Stultz <john.stultz@linaro.org>2013-12-12 13:10:55 -0800
committerJohn Stultz <john.stultz@linaro.org>2013-12-23 11:54:32 -0800
commit47a1b796306356f358e515149d86baf0cc6bf007 (patch)
tree0ab5132f643db4318b395f2cb13f435ba3d9e5b6 /kernel/time/tick-sched.c
parent6fdda9a9c5db367130cf32df5d6618d08b89f46a (diff)
downloadlinux-47a1b796306356f358e515149d86baf0cc6bf007.tar.bz2
tick/timekeeping: Call update_wall_time outside the jiffies lock
Since the xtime lock was split into the timekeeping lock and the jiffies lock, we no longer need to call update_wall_time() while holding the jiffies lock. Thus, this patch splits update_wall_time() out from do_timer(). This allows us to get away from calling clock_was_set_delayed() in update_wall_time() and instead use the standard clock_was_set() call that previously would deadlock, as it causes the jiffies lock to be acquired. Cc: Sasha Levin <sasha.levin@oracle.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Richard Cochran <richardcochran@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: John Stultz <john.stultz@linaro.org>
Diffstat (limited to 'kernel/time/tick-sched.c')
-rw-r--r--kernel/time/tick-sched.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index 2afd43fca93b..c58b03d89951 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -86,6 +86,7 @@ static void tick_do_update_jiffies64(ktime_t now)
tick_next_period = ktime_add(last_jiffies_update, tick_period);
}
write_sequnlock(&jiffies_lock);
+ update_wall_time();
}
/*