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Richard Larocque 3c47864204 alarmtimer: Lock k_itimer during timer callback

commit 474e941bed upstream.

Locks the k_itimer's it_lock member when handling the alarm timer's
expiry callback.

The regular posix timers defined in posix-timers.c have this lock held
during timout processing because their callbacks are routed through
posix_timer_fn().  The alarm timers follow a different path, so they
ought to grab the lock somewhere else.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Sharvil Nanavati <sharvil@google.com>
Signed-off-by: Richard Larocque <rlarocque@google.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2014-10-05 14:54:14 -07:00

alarmtimer.c

alarmtimer: Lock k_itimer during timer callback

2014-10-05 14:54:14 -07:00

clockevents.c

timer: Fix lock inversion between hrtimer_bases.lock and scheduler locks

2014-08-07 14:30:26 -07:00

clocksource.c

…

jiffies.c

time: Fix overflow when HZ is smaller than 60

2014-02-22 12:41:29 -08:00