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authorDmitry Torokhov <[email protected]>2020-01-31 17:42:33 -0800
committerDmitry Torokhov <[email protected]>2020-01-31 17:42:33 -0800
commitb19efcabb587e5470a423ef778905f47e5a47f1a (patch)
tree8863c2233ed8a30d55c4e4029a98c3d7faf359a8 /include/linux/hrtimer.h
parent996d5d5f89a558a3608a46e73ccd1b99f1b1d058 (diff)
parentc5ccf2ad3d33413fee06ae87d0b970d8cc540db6 (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.h14
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);
}
/*