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timers: Export CLOCK_BOOTTIME via the posix timers interface

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This patch exports CLOCK_BOOTTIME through the posix timers interface

CC: Jamie Lokier <jamie@shareable.org>
CC: Thomas Gleixner <tglx@linutronix.de>
CC: Alexander Shishkin <virtuoso@slind.org>
CC: Arve Hjønnevåg <arve@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
This commit is contained in:
John Stultz 2011-02-15 10:52:57 -08:00
parent 70a08cca12
commit 7fdd7f8900
1 changed files with 20 additions and 1 deletions
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21
kernel/posix-timers.c
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@ -187,7 +187,7 @@ static int posix_ktime_get_ts(clockid_t which_clock, struct timespec *tp)
} }
/* /*
* Get monotonic time for posix timers * Get monotonic-raw time for posix timers
*/ */
static int posix_get_monotonic_raw(clockid_t which_clock, struct timespec *tp) static int posix_get_monotonic_raw(clockid_t which_clock, struct timespec *tp)
{ {
@ -214,6 +214,14 @@ static int posix_get_coarse_res(const clockid_t which_clock, struct timespec *tp
*tp = ktime_to_timespec(KTIME_LOW_RES); *tp = ktime_to_timespec(KTIME_LOW_RES);
return 0; return 0;
} }
static int posix_get_boottime(const clockid_t which_clock, struct timespec *tp)
{
get_monotonic_boottime(tp);
return 0;
}
/* /*
* Initialize everything, well, just everything in Posix clocks/timers ;) * Initialize everything, well, just everything in Posix clocks/timers ;)
*/ */
@ -253,12 +261,23 @@ static __init int init_posix_timers(void)
.clock_getres = posix_get_coarse_res, .clock_getres = posix_get_coarse_res,
.clock_get = posix_get_monotonic_coarse, .clock_get = posix_get_monotonic_coarse,
}; };
struct k_clock clock_boottime = {
.clock_getres = hrtimer_get_res,
.clock_get = posix_get_boottime,
.nsleep = common_nsleep,
.nsleep_restart = hrtimer_nanosleep_restart,
.timer_create = common_timer_create,
.timer_set = common_timer_set,
.timer_get = common_timer_get,
.timer_del = common_timer_del,
};
posix_timers_register_clock(CLOCK_REALTIME, &clock_realtime); posix_timers_register_clock(CLOCK_REALTIME, &clock_realtime);
posix_timers_register_clock(CLOCK_MONOTONIC, &clock_monotonic); posix_timers_register_clock(CLOCK_MONOTONIC, &clock_monotonic);
posix_timers_register_clock(CLOCK_MONOTONIC_RAW, &clock_monotonic_raw); posix_timers_register_clock(CLOCK_MONOTONIC_RAW, &clock_monotonic_raw);
posix_timers_register_clock(CLOCK_REALTIME_COARSE, &clock_realtime_coarse); posix_timers_register_clock(CLOCK_REALTIME_COARSE, &clock_realtime_coarse);
posix_timers_register_clock(CLOCK_MONOTONIC_COARSE, &clock_monotonic_coarse); posix_timers_register_clock(CLOCK_MONOTONIC_COARSE, &clock_monotonic_coarse);
posix_timers_register_clock(CLOCK_BOOTTIME, &clock_boottime);
posix_timers_cache = kmem_cache_create("posix_timers_cache", posix_timers_cache = kmem_cache_create("posix_timers_cache",
sizeof (struct k_itimer), 0, SLAB_PANIC, sizeof (struct k_itimer), 0, SLAB_PANIC,