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hrtimer: Factor out __hrtimer_start_range_ns() 

Preparatory patch for softirq based hrtimers to avoid code duplication,
factor out the __hrtimer_start_range_ns() function from hrtimer_start_range_ns().

No functional change.

Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Cc: Christoph Hellwig <hch@lst.de>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: keescook@chromium.org
Link: http://lkml.kernel.org/r/20171221104205.7269-24-anna-maria@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Anna-Maria Gleixner 2017-12-21 11:41:52 +01:00 committed by Ingo Molnar
parent 3ec7a3ee9f
commit 138a6b7ae4
1 changed files with 24 additions and 20 deletions
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44
kernel/time/hrtimer.c
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@ -905,22 +905,11 @@ static inline ktime_t hrtimer_update_lowres(struct hrtimer *timer, ktime_t tim,
return tim;
}
/**
* 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: 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)
static int __hrtimer_start_range_ns(struct hrtimer *timer, ktime_t tim,
u64 delta_ns, const enum hrtimer_mode mode,
struct hrtimer_clock_base *base)
{
struct hrtimer_clock_base *base, *new_base;
unsigned long flags;
int leftmost;
base = lock_hrtimer_base(timer, &flags);
struct hrtimer_clock_base *new_base;
/* Remove an active timer from the queue: */
remove_hrtimer(timer, base, true);
@ -935,12 +924,27 @@ void hrtimer_start_range_ns(struct hrtimer *timer, ktime_t tim,
/* Switch the timer base, if necessary: */
new_base = switch_hrtimer_base(timer, base, mode & HRTIMER_MODE_PINNED);
leftmost = enqueue_hrtimer(timer, new_base, mode);
if (!leftmost)
goto unlock;
return enqueue_hrtimer(timer, new_base, mode);
}
/**
* 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: 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)
{
struct hrtimer_clock_base *base;
unsigned long flags;
base = lock_hrtimer_base(timer, &flags);
if (__hrtimer_start_range_ns(timer, tim, delta_ns, mode, base))
hrtimer_reprogram(timer);
hrtimer_reprogram(timer);
unlock:
unlock_hrtimer_base(timer, &flags);
}
EXPORT_SYMBOL_GPL(hrtimer_start_range_ns);