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[PATCH] hrtimer: hrtimer core code

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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>
This commit is contained in:
Thomas Gleixner
2006-01-09 20:52:32 -08:00
committed by Linus Torvalds
parent 97fc79f97b
commit c0a3132963
6 changed files with 828 additions and 1 deletions
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15
include/linux/ktime.h
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@ -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