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timekeeping: Add CLOCK_TAI clockid

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This add a CLOCK_TAI clockid and the needed accessors.

CC: Thomas Gleixner <tglx@linutronix.de>
CC: Eric Dumazet <eric.dumazet@gmail.com>
CC: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
This commit is contained in:
John Stultz 2012-05-03 12:43:40 -07:00
parent cc244ddae6
commit 1ff3c9677b
4 changed files with 43 additions and 4 deletions
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10
kernel/posix-timers.c
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@ -221,6 +221,11 @@ static int posix_get_boottime(const clockid_t which_clock, struct timespec *tp)
return 0;
}
static int posix_get_tai(clockid_t which_clock, struct timespec *tp)
{
timekeeping_clocktai(tp);
return 0;
}
/*
* Initialize everything, well, just everything in Posix clocks/timers ;)
@ -261,6 +266,10 @@ static __init int init_posix_timers(void)
.clock_getres = posix_get_coarse_res,
.clock_get = posix_get_monotonic_coarse,
};
struct k_clock clock_tai = {
.clock_getres = hrtimer_get_res,
.clock_get = posix_get_tai,
};
struct k_clock clock_boottime = {
.clock_getres = hrtimer_get_res,
.clock_get = posix_get_boottime,
@ -278,6 +287,7 @@ static __init int init_posix_timers(void)
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_BOOTTIME, &clock_boottime);
posix_timers_register_clock(CLOCK_TAI, &clock_tai);
posix_timers_cache = kmem_cache_create("posix_timers_cache",
sizeof (struct k_itimer), 0, SLAB_PANIC,