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posix-timers: Store k_clock pointer in k_itimer

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Having the k_clock pointer in the k_itimer struct avoids the lookup in
several code pathes and makes the next steps of unification of the hrtimer
and alarmtimer based posix timers simpler.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: John Stultz <john.stultz@linaro.org>
Link: http://lkml.kernel.org/r/20170530211656.641222072@linutronix.de
This commit is contained in:
Thomas Gleixner 2017-05-30 23:15:44 +02:00
parent 80105cd0e6
commit d97bb75ddd
3 changed files with 8 additions and 3 deletions
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2
include/linux/posix-timers.h
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@ -56,6 +56,7 @@ struct cpu_timer_list {
* @list: List head for binding the timer to signals->posix_timers
* @t_hash: Entry in the posix timer hash table
* @it_lock: Lock protecting the timer
* @kclock: Pointer to the k_clock struct handling this timer
* @it_clock: The posix timer clock id
* @it_id: The posix timer id for identifying the timer
* @it_overrun: The overrun counter for pending signals
@ -75,6 +76,7 @@ struct k_itimer {
struct list_head list;
struct hlist_node t_hash;
spinlock_t it_lock;
const struct k_clock *kclock;
clockid_t it_clock;
timer_t it_id;
int it_overrun;