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hrtimer: Remove hrtimer_start() return value

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No user was ever interested whether the timer was active or not when
it was started. All abusers of the return value are gone, so get rid
of it.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Preeti U Murthy <preeti@linux.vnet.ibm.com>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Link: http://lkml.kernel.org/r/20150414203503.483556394@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner 2015-04-14 21:09:23 +00:00
parent b8a62f1ff0
commit 61699e1307
3 changed files with 19 additions and 32 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

22
include/linux/hrtimer.h
View file

@ -355,7 +355,7 @@ static inline void destroy_hrtimer_on_stack(struct hrtimer *timer) { }
#endif
/* Basic timer operations: */
extern int hrtimer_start_range_ns(struct hrtimer *timer, ktime_t tim,
extern void hrtimer_start_range_ns(struct hrtimer *timer, ktime_t tim,
unsigned long range_ns, const enum hrtimer_mode mode);
/**
@ -364,34 +364,30 @@ extern int hrtimer_start_range_ns(struct hrtimer *timer, ktime_t tim,
* @tim: expiry time
* @mode: expiry mode: absolute (HRTIMER_MODE_ABS) or
* relative (HRTIMER_MODE_REL)
*
* Returns:
* 0 on success
* 1 when the timer was active
*/
static inline int hrtimer_start(struct hrtimer *timer, ktime_t tim,
const enum hrtimer_mode mode)
static inline void hrtimer_start(struct hrtimer *timer, ktime_t tim,
const enum hrtimer_mode mode)
{
return hrtimer_start_range_ns(timer, tim, 0, mode);
hrtimer_start_range_ns(timer, tim, 0, mode);
}
extern int hrtimer_cancel(struct hrtimer *timer);
extern int hrtimer_try_to_cancel(struct hrtimer *timer);
static inline int hrtimer_start_expires(struct hrtimer *timer,
enum hrtimer_mode mode)
static inline void hrtimer_start_expires(struct hrtimer *timer,
enum hrtimer_mode mode)
{
unsigned long delta;
ktime_t soft, hard;
soft = hrtimer_get_softexpires(timer);
hard = hrtimer_get_expires(timer);
delta = ktime_to_ns(ktime_sub(hard, soft));
return hrtimer_start_range_ns(timer, soft, delta, mode);
hrtimer_start_range_ns(timer, soft, delta, mode);
}
static inline int hrtimer_restart(struct hrtimer *timer)
static inline void hrtimer_restart(struct hrtimer *timer)
{
return hrtimer_start_expires(timer, HRTIMER_MODE_ABS);
hrtimer_start_expires(timer, HRTIMER_MODE_ABS);
}
/* Query timers: */

6
include/linux/interrupt.h
View file

@ -593,10 +593,10 @@ tasklet_hrtimer_init(struct tasklet_hrtimer *ttimer,
clockid_t which_clock, enum hrtimer_mode mode);
static inline
int tasklet_hrtimer_start(struct tasklet_hrtimer *ttimer, ktime_t time,
const enum hrtimer_mode mode)
void tasklet_hrtimer_start(struct tasklet_hrtimer *ttimer, ktime_t time,
const enum hrtimer_mode mode)
{
return hrtimer_start(&ttimer->timer, time, mode);
hrtimer_start(&ttimer->timer, time, mode);
}
static inline

23
kernel/time/hrtimer.c
View file

@ -923,22 +923,18 @@ remove_hrtimer(struct hrtimer *timer, struct hrtimer_clock_base *base)
* @delta_ns: "slack" range for the timer
* @mode: expiry mode: absolute (HRTIMER_MODE_ABS) or
* relative (HRTIMER_MODE_REL)
*
* Returns:
* 0 on success
* 1 when the timer was active
*/
int hrtimer_start_range_ns(struct hrtimer *timer, ktime_t tim,
unsigned long delta_ns, const enum hrtimer_mode mode)
void hrtimer_start_range_ns(struct hrtimer *timer, ktime_t tim,
unsigned long delta_ns, const enum hrtimer_mode mode)
{
struct hrtimer_clock_base *base, *new_base;
unsigned long flags;
int ret, leftmost;
int leftmost;
base = lock_hrtimer_base(timer, &flags);
/* Remove an active timer from the queue: */
ret = remove_hrtimer(timer, base);
remove_hrtimer(timer, base);
if (mode & HRTIMER_MODE_REL) {
tim = ktime_add_safe(tim, base->get_time());
@ -962,11 +958,8 @@ int hrtimer_start_range_ns(struct hrtimer *timer, ktime_t tim,
timer_stats_hrtimer_set_start_info(timer);
leftmost = enqueue_hrtimer(timer, new_base);
if (!leftmost) {
unlock_hrtimer_base(timer, &flags);
return ret;
}
if (!leftmost)
goto unlock;
if (!hrtimer_is_hres_active(timer)) {
/*
@ -977,10 +970,8 @@ int hrtimer_start_range_ns(struct hrtimer *timer, ktime_t tim,
} else {
hrtimer_reprogram(timer, new_base);
}
unlock:
unlock_hrtimer_base(timer, &flags);
return ret;
}
EXPORT_SYMBOL_GPL(hrtimer_start_range_ns);