timekeeping: Add CLOCK_TAI clockid

[~andy/linux] / kernel / posix-timers.c

diff --git a/kernel/posix-timers.c b/kernel/posix-timers.c
index 6edbb2c55c22fd56a61eb6665e32087592a81fc3..fbfc5f1b7710528bd2138b14967cdcae12f48712 100644 (file)
--- a/kernel/posix-timers.c
+++ b/kernel/posix-timers.c
@@ -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,