diff options
| author |   Anna-Maria Gleixner <anna-maria@linutronix.de> | 2019-03-21 13:09:19 +0100 |
|---|---|---|
| committer |   Thomas Gleixner <tglx@linutronix.de> | 2019-03-24 20:29:32 +0100 |
| commit | dc1e7dc5ac6254ba0502323381a7ec847e408f1d (patch) | |
| tree | 6b775233eac55849eba1d9815bc35a7a4003c8ff /kernel/time | |
| parent | tick/sched: Update tick_sched struct documentation (diff) | |
| download | linux-dev-dc1e7dc5ac6254ba0502323381a7ec847e408f1d.tar.xz linux-dev-dc1e7dc5ac6254ba0502323381a7ec847e408f1d.zip | |
timer: Move trace point to get proper index
When placing the timer_start trace point before the timer wheel bucket
index is calculated, the index information in the trace point is useless.
It is not possible to simply move the debug_activate() call after the index
calculation, because debug_object_activate() needs to be called before
touching the object.
Therefore split debug_activate() and move the trace point into
enqueue_timer() after the new index has been calculated. The
debug_object_activate() call remains at the original place.
Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: fweisbec@gmail.com
Cc: peterz@infradead.org
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: https://lkml.kernel.org/r/20190321120921.16463-3-anna-maria@linutronix.de
Diffstat (limited to 'kernel/time')
| -rw-r--r-- | kernel/time/timer.c | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/kernel/time/timer.c b/kernel/time/timer.c index 2fce056f8a49..8d7918ae4d0c 100644 --- a/kernel/time/timer.c +++ b/kernel/time/timer.c @@ -536,6 +536,8 @@ static void enqueue_timer(struct timer_base *base, struct timer_list *timer, hlist_add_head(&timer->entry, base->vectors + idx); __set_bit(idx, base->pending_map); timer_set_idx(timer, idx); + + trace_timer_start(timer, timer->expires, timer->flags); } static void @@ -757,13 +759,6 @@ static inline void debug_init(struct timer_list *timer) trace_timer_init(timer); } -static inline void -debug_activate(struct timer_list *timer, unsigned long expires) -{ - debug_timer_activate(timer); - trace_timer_start(timer, expires, timer->flags); -} - static inline void debug_deactivate(struct timer_list *timer) { debug_timer_deactivate(timer); @@ -1037,7 +1032,7 @@ __mod_timer(struct timer_list *timer, unsigned long expires, unsigned int option } } - debug_activate(timer, expires); + debug_timer_activate(timer); timer->expires = expires; /* @@ -1171,7 +1166,7 @@ void add_timer_on(struct timer_list *timer, int cpu) } forward_timer_base(base); - debug_activate(timer, timer->expires); + debug_timer_activate(timer); internal_add_timer(base, timer); raw_spin_unlock_irqrestore(&base->lock, flags); } |