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[PATCH] hrtimers: add high resolution timer support

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Implement high resolution timers on top of the hrtimers infrastructure and the
clockevents / tick-management framework.  This provides accurate timers for
all hrtimer subsystem users.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Thomas Gleixner 2007-02-16 01:28:11 -08:00 • committed by Linus Torvalds
parent d40891e75f
commit 54cdfdb47f
8 changed files with 650 additions and 58 deletions
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3
include/linux/ktime.h
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@ -261,8 +261,7 @@ static inline s64 ktime_to_ns(const ktime_t kt)
* idea of the (in)accuracy of timers. Timer values are rounded up to
* this resolution values.
*/
#define KTIME_REALTIME_RES (ktime_t){ .tv64 = TICK_NSEC }
#define KTIME_MONOTONIC_RES (ktime_t){ .tv64 = TICK_NSEC }
#define KTIME_LOW_RES (ktime_t){ .tv64 = TICK_NSEC }
/* Get the monotonic time in timespec format: */
extern void ktime_get_ts(struct timespec *ts);