Commit-ID: 6de6250c759781daeadca784d0cc34ae73f3b502 Gitweb: https://git.kernel.org/tip/6de6250c759781daeadca784d0cc34ae73f3b502 Author: Anna-Maria Gleixner <anna-maria@xxxxxxxxxxxxx> AuthorDate: Thu, 21 Dec 2017 11:41:34 +0100 Committer: Ingo Molnar <mingo@xxxxxxxxxx> CommitDate: Tue, 16 Jan 2018 02:35:45 +0100 hrtimer: Fix hrtimer_start[_range_ns]() function descriptions The hrtimer_start[_range_ns]() functions start a timer reliably on this CPU only when HRTIMER_MODE_PINNED is set. Furthermore the HRTIMER_MODE_PINNED mode is not considered when a hrtimer is initialized. Signed-off-by: Anna-Maria Gleixner <anna-maria@xxxxxxxxxxxxx> Cc: Christoph Hellwig <hch@xxxxxx> Cc: John Stultz <john.stultz@xxxxxxxxxx> Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Cc: keescook@xxxxxxxxxxxx Link: http://lkml.kernel.org/r/20171221104205.7269-6-anna-maria@xxxxxxxxxxxxx Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> --- include/linux/hrtimer.h | 6 +++--- kernel/time/hrtimer.c | 9 +++++---- 2 files changed, 8 insertions(+), 7 deletions(-) diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h index 931ce9c..4e6a884 100644 --- a/include/linux/hrtimer.h +++ b/include/linux/hrtimer.h @@ -361,11 +361,11 @@ extern void hrtimer_start_range_ns(struct hrtimer *timer, ktime_t tim, u64 range_ns, const enum hrtimer_mode mode); /** - * hrtimer_start - (re)start an hrtimer on the current CPU + * hrtimer_start - (re)start an hrtimer * @timer: the timer to be added * @tim: expiry time - * @mode: expiry mode: absolute (HRTIMER_MODE_ABS) or - * relative (HRTIMER_MODE_REL) + * @mode: timer mode: absolute (HRTIMER_MODE_ABS) or + * relative (HRTIMER_MODE_REL), and pinned (HRTIMER_MODE_PINNED) */ static inline void hrtimer_start(struct hrtimer *timer, ktime_t tim, const enum hrtimer_mode mode) diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c index f2de328..fd08729 100644 --- a/kernel/time/hrtimer.c +++ b/kernel/time/hrtimer.c @@ -924,12 +924,12 @@ static inline ktime_t hrtimer_update_lowres(struct hrtimer *timer, ktime_t tim, } /** - * hrtimer_start_range_ns - (re)start an hrtimer on the current CPU + * hrtimer_start_range_ns - (re)start an hrtimer * @timer: the timer to be added * @tim: expiry time * @delta_ns: "slack" range for the timer - * @mode: expiry mode: absolute (HRTIMER_MODE_ABS) or - * relative (HRTIMER_MODE_REL) + * @mode: timer mode: absolute (HRTIMER_MODE_ABS) or + * relative (HRTIMER_MODE_REL), and pinned (HRTIMER_MODE_PINNED) */ void hrtimer_start_range_ns(struct hrtimer *timer, ktime_t tim, u64 delta_ns, const enum hrtimer_mode mode) @@ -1107,7 +1107,8 @@ static void __hrtimer_init(struct hrtimer *timer, clockid_t clock_id, * hrtimer_init - initialize a timer to the given clock * @timer: the timer to be initialized * @clock_id: the clock to be used - * @mode: timer mode abs/rel + * @mode: timer mode: absolute (HRTIMER_MODE_ABS) or + * relative (HRTIMER_MODE_REL); pinned is not considered here! */ void hrtimer_init(struct hrtimer *timer, clockid_t clock_id, enum hrtimer_mode mode) -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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