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timers: Invoke timer_start_debug() where it makes sense 

The timer start debug function is called before the proper timer base is
set. As a consequence the trace data contains the stale CPU and flags
values.

Call the debug function after setting the new base and flags.

Fixes: 500462a9de ("timers: Switch to a non-cascading wheel")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Sebastian Siewior <bigeasy@linutronix.de>
Cc: stable@vger.kernel.org
Cc: rt@linutronix.de
Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
Cc: Anna-Maria Gleixner <anna-maria@linutronix.de>
Link: https://lkml.kernel.org/r/20171222145337.792907137@linutronix.de
zero-colors
Thomas Gleixner 2017-12-22 15:51:14 +01:00
parent 5d62c183f9
commit fd45bb77ad
1 changed files with 2 additions and 2 deletions
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4
kernel/time/timer.c
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@ -1007,8 +1007,6 @@ __mod_timer(struct timer_list *timer, unsigned long expires, unsigned int option
if (!ret && (options & MOD_TIMER_PENDING_ONLY))
goto out_unlock;
debug_activate(timer, expires);
new_base = get_target_base(base, timer->flags);
if (base != new_base) {
@ -1032,6 +1030,8 @@ __mod_timer(struct timer_list *timer, unsigned long expires, unsigned int option
}
}
debug_activate(timer, expires);
timer->expires = expires;
/*
* If 'idx' was calculated above and the base time did not advance