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| author | Thomas Gleixner <tglx@linutronix.de> | 2006-01-09 20:52:32 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-10 08:01:37 -0800 |
| commit | c0a3132963db68f1fbbd0e316b73de100fee3f08 (patch) | |
| tree | cdd76aacf0ca7ae7780696a06bf9643f8b245ba1 /include/linux/ktime.h | |
| parent | 97fc79f97b1111c80010d34ee66312b88f531e41 (diff) | |
| download | linux-c0a3132963db68f1fbbd0e316b73de100fee3f08.tar.gz linux-c0a3132963db68f1fbbd0e316b73de100fee3f08.tar.bz2 linux-c0a3132963db68f1fbbd0e316b73de100fee3f08.zip | |
[PATCH] hrtimer: hrtimer core code
hrtimer subsystem core. It is initialized at bootup and expired by the timer
interrupt, but is otherwise not utilized by any other subsystem yet.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/ktime.h')
| -rw-r--r-- | include/linux/ktime.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/linux/ktime.h b/include/linux/ktime.h index 5b9a9eb82baa..222a047cc145 100644 --- a/include/linux/ktime.h +++ b/include/linux/ktime.h @@ -266,4 +266,19 @@ static inline u64 ktime_to_ns(const ktime_t kt) #endif +/* + * The resolution of the clocks. The resolution value is returned in + * the clock_getres() system call to give application programmers an + * idea of the (in)accuracy of timers. Timer values are rounded up to + * this resolution values. + */ +#define KTIME_REALTIME_RES (NSEC_PER_SEC/HZ) +#define KTIME_MONOTONIC_RES (NSEC_PER_SEC/HZ) + +/* Get the monotonic time in timespec format: */ +extern void ktime_get_ts(struct timespec *ts); + +/* Get the real (wall-) time in timespec format: */ +#define ktime_get_real_ts(ts) getnstimeofday(ts) + #endif |