Messages in this thread Patch in this message | | | Subject | [PATCH-mm] Use generic timeofday interfaces in hrtimer / ktime | From | Thomas Gleixner <> | Date | Fri, 13 Jan 2006 00:53:40 +0100 |
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When CONFIG_GENERIC_TIME is enabled use the ktime_t based interfaces of timeofday. Also disable the timespec based interfaces in hrtimers and use the timeofday interfaces directly.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
include/linux/hrtimer.h | 1 + include/linux/ktime.h | 11 +++++++++++ kernel/hrtimer.c | 47 ++++++++++++++++++++++++----------------------- 3 files changed, 36 insertions(+), 23 deletions(-)
Index: linux-2.6.15-mm/include/linux/hrtimer.h =================================================================== --- linux-2.6.15-mm.orig/include/linux/hrtimer.h +++ linux-2.6.15-mm/include/linux/hrtimer.h @@ -20,6 +20,7 @@ #include <linux/init.h> #include <linux/list.h> #include <linux/wait.h> +#include <linux/timeofday.h> /* * Mode arguments of xxx_hrtimer functions: Index: linux-2.6.15-mm/include/linux/ktime.h =================================================================== --- linux-2.6.15-mm.orig/include/linux/ktime.h +++ linux-2.6.15-mm/include/linux/ktime.h @@ -275,10 +275,21 @@ static inline u64 ktime_to_ns(const ktim #define KTIME_REALTIME_RES (NSEC_PER_SEC/HZ) #define KTIME_MONOTONIC_RES (NSEC_PER_SEC/HZ) +#ifdef CONFIG_GENERIC_TIME + +#define ktime_get get_monotonic_clock +#define ktime_get_real get_realtime_clock +#define ktime_get_ts(ts) get_monotonic_clock_ts(ts) +#define ktime_get_real_ts(ts) get_realtime_clock_ts(ts) + +#else /* CONFIG_GENERIC_TIME */ + /* 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 /* !CONFIG_GENERIC_TIME */ + #endif Index: linux-2.6.15-mm/kernel/hrtimer.c =================================================================== --- linux-2.6.15-mm.orig/kernel/hrtimer.c +++ linux-2.6.15-mm/kernel/hrtimer.c @@ -29,12 +29,13 @@ #include <linux/percpu.h> #include <linux/hrtimer.h> #include <linux/notifier.h> -#include <linux/timeofday.h> #include <linux/syscalls.h> #include <linux/interrupt.h> #include <asm/uaccess.h> +#ifndef CONFIG_GENERIC_TIME + /** * ktime_get - get the monotonic time in ktime_t format * @@ -62,29 +63,8 @@ static ktime_t ktime_get_real(void) return timespec_to_ktime(now); } - EXPORT_SYMBOL_GPL(ktime_get_real); -/* - * The timer bases: - */ - -#define MAX_HRTIMER_BASES 2 - -static DEFINE_PER_CPU(struct hrtimer_base, hrtimer_bases[MAX_HRTIMER_BASES]) = -{ - { - .index = CLOCK_REALTIME, - .get_time = &ktime_get_real, - .resolution = KTIME_REALTIME_RES, - }, - { - .index = CLOCK_MONOTONIC, - .get_time = &ktime_get, - .resolution = KTIME_MONOTONIC_RES, - }, -}; - /** * ktime_get_ts - get the monotonic clock in timespec format * @@ -111,6 +91,28 @@ void ktime_get_ts(struct timespec *ts) } EXPORT_SYMBOL_GPL(ktime_get_ts); +#endif + +/* + * The timer bases: + */ + +#define MAX_HRTIMER_BASES 2 + +static DEFINE_PER_CPU(struct hrtimer_base, hrtimer_bases[MAX_HRTIMER_BASES]) = +{ + { + .index = CLOCK_REALTIME, + .get_time = &ktime_get_real, + .resolution = KTIME_REALTIME_RES, + }, + { + .index = CLOCK_MONOTONIC, + .get_time = &ktime_get, + .resolution = KTIME_MONOTONIC_RES, + }, +}; + /* * Functions and macros which are different for UP/SMP systems are kept in a * single place Index: linux-2.6.15-mm/kernel/time/timeofday.c =================================================================== --- linux-2.6.15-mm.orig/kernel/time/timeofday.c +++ linux-2.6.15-mm/kernel/time/timeofday.c @@ -238,6 +238,8 @@ ktime_t get_realtime_clock(void) return ret; } +EXPORT_SYMBOL_GPL(get_realtime_clock); + /** * get_realtime_offset - Returns the offset of realtime clock *
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