diff options
| author | Arjan van de Ven <arjan@linux.intel.com> | 2008-09-07 21:47:46 +0400 |
|---|---|---|
| committer | Arjan van de Ven <arjan@linux.intel.com> | 2008-09-07 21:58:01 +0400 |
| commit | da8f2e170ea94cc20f8ebbc8ee8d127edb8f12f1 (patch) | |
| tree | 08d25027a7769cd250aca5b516a3d8c95e4385be /include/linux | |
| parent | 2ec02270c00f94b08fddfb68c37510a9fb47ac7c (diff) | |
| download | linux-da8f2e170ea94cc20f8ebbc8ee8d127edb8f12f1.tar.xz | |
hrtimer: add a hrtimer_start_range() function
this patch adds a _range version of hrtimer_start() so that range timers
can be created; the hrtimer_start() function is just a wrapper around this.
In addition, hrtimer_start_expires() will now preserve existing ranges.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/hrtimer.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h index 4c1a834b9849..1c0473e8ecb4 100644 --- a/include/linux/hrtimer.h +++ b/include/linux/hrtimer.h @@ -350,13 +350,20 @@ static inline void destroy_hrtimer_on_stack(struct hrtimer *timer) { } /* Basic timer operations: */ extern int hrtimer_start(struct hrtimer *timer, ktime_t tim, const enum hrtimer_mode mode); +extern int hrtimer_start_range_ns(struct hrtimer *timer, ktime_t tim, + unsigned long range_ns, const enum hrtimer_mode 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) { - return hrtimer_start(timer, hrtimer_get_expires(timer), 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, hrtimer_get_expires(timer), delta, mode); } static inline int hrtimer_restart(struct hrtimer *timer) |