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ktime: Cleanup ktime_set() usage

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ktime_set(S,N) was required for the timespec storage type and is still
useful for situations where a Seconds and Nanoseconds part of a time value
needs to be converted. For anything where the Seconds argument is 0, this
is pointless and can be replaced with a simple assignment.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
This commit is contained in:
Thomas Gleixner
2016-12-25 12:30:41 +01:00
parent 2456e85535
commit 8b0e195314
56 changed files with 84 additions and 95 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
kernel/sched/core.c
View File

@@ -1456,7 +1456,7 @@ unsigned long wait_task_inactive(struct task_struct *p, long match_state)
* yield - it could be a while.
*/
if (unlikely(queued)) {
ktime_t to = ktime_set(0, NSEC_PER_SEC/HZ);
ktime_t to = NSEC_PER_SEC / HZ;
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_hrtimeout(&to, HRTIMER_MODE_REL);

4
kernel/time/alarmtimer.c
View File

@@ -234,7 +234,7 @@ static int alarmtimer_suspend(struct device *dev)
min = freezer_delta;
expires = freezer_expires;
type = freezer_alarmtype;
freezer_delta = ktime_set(0, 0);
freezer_delta = 0;
spin_unlock_irqrestore(&freezer_delta_lock, flags);
rtc = alarmtimer_get_rtcdev();
@@ -277,7 +277,7 @@ static int alarmtimer_suspend(struct device *dev)
now = ktime_add(now, min);
/* Set alarm, if in the past reject suspend briefly to handle */
ret = rtc_timer_start(rtc, &rtctimer, now, ktime_set(0, 0));
ret = rtc_timer_start(rtc, &rtctimer, now, 0);
if (ret < 0)
__pm_wakeup_event(ws, MSEC_PER_SEC);
return ret;

2
kernel/time/hrtimer.c
View File

@@ -955,7 +955,7 @@ static inline ktime_t hrtimer_update_lowres(struct hrtimer *timer, ktime_t tim,
*/
timer->is_rel = mode & HRTIMER_MODE_REL;
if (timer->is_rel)
tim = ktime_add_safe(tim, ktime_set(0, hrtimer_resolution));
tim = ktime_add_safe(tim, hrtimer_resolution);
#endif
return tim;
}

2
kernel/time/posix-timers.c
View File

@@ -485,7 +485,7 @@ static enum hrtimer_restart posix_timer_fn(struct hrtimer *timer)
*/
#ifdef CONFIG_HIGH_RES_TIMERS
{
ktime_t kj = ktime_set(0, NSEC_PER_SEC / HZ);
ktime_t kj = NSEC_PER_SEC / HZ;
if (timr->it.real.interval < kj)
now = ktime_add(now, kj);

4
kernel/time/tick-common.c
View File

@@ -178,8 +178,8 @@ static void tick_setup_device(struct tick_device *td,
struct clock_event_device *newdev, int cpu,
const struct cpumask *cpumask)
{
ktime_t next_event;
void (*handler)(struct clock_event_device *) = NULL;
ktime_t next_event = 0;
/*
* First device setup ?
@@ -195,7 +195,7 @@ static void tick_setup_device(struct tick_device *td,
else
tick_do_timer_cpu = TICK_DO_TIMER_NONE;
tick_next_period = ktime_get();
tick_period = ktime_set(0, NSEC_PER_SEC / HZ);
tick_period = NSEC_PER_SEC / HZ;
}
/*