diff options
| author | Dmitry Torokhov <[email protected]> | 2020-01-31 17:42:33 -0800 |
|---|---|---|
| committer | Dmitry Torokhov <[email protected]> | 2020-01-31 17:42:33 -0800 |
| commit | b19efcabb587e5470a423ef778905f47e5a47f1a (patch) | |
| tree | 8863c2233ed8a30d55c4e4029a98c3d7faf359a8 /include/linux/hrtimer.h | |
| parent | 996d5d5f89a558a3608a46e73ccd1b99f1b1d058 (diff) | |
| parent | c5ccf2ad3d33413fee06ae87d0b970d8cc540db6 (diff) | |
Merge branch 'next' into for-linus
Prepare input updates for 5.6 merge window.
Diffstat (limited to 'include/linux/hrtimer.h')
| -rw-r--r-- | include/linux/hrtimer.h | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h index 1b9a51a1bccb..1f98b52118f0 100644 --- a/include/linux/hrtimer.h +++ b/include/linux/hrtimer.h @@ -456,12 +456,18 @@ extern u64 hrtimer_next_event_without(const struct hrtimer *exclude); extern bool hrtimer_active(const struct hrtimer *timer); -/* - * Helper function to check, whether the timer is on one of the queues +/** + * hrtimer_is_queued = check, whether the timer is on one of the queues + * @timer: Timer to check + * + * Returns: True if the timer is queued, false otherwise + * + * The function can be used lockless, but it gives only a current snapshot. */ -static inline int hrtimer_is_queued(struct hrtimer *timer) +static inline bool hrtimer_is_queued(struct hrtimer *timer) { - return timer->state & HRTIMER_STATE_ENQUEUED; + /* The READ_ONCE pairs with the update functions of timer->state */ + return !!(READ_ONCE(timer->state) & HRTIMER_STATE_ENQUEUED); } /* |