hrtimer: Add hrtimer support for CLOCK_TAI
Add hrtimer support for CLOCK_TAI, as well as posix timer interfaces.
Signed-off-by: John Stultz <john.stultz@linaro.org>
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index 8a84275..8061ae0 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -67,6 +67,7 @@
tk->wall_to_monotonic = wtm;
set_normalized_timespec(&tmp, -wtm.tv_sec, -wtm.tv_nsec);
tk->offs_real = timespec_to_ktime(tmp);
+ tk->offs_tai = ktime_sub(tk->offs_real, ktime_set(tk->tai_offset, 0));
}
static void tk_set_sleep_time(struct timekeeper *tk, struct timespec t)
@@ -409,6 +410,20 @@
EXPORT_SYMBOL(timekeeping_clocktai);
+/**
+ * ktime_get_clocktai - Returns the TAI time of day in a ktime
+ *
+ * Returns the time of day in a ktime.
+ */
+ktime_t ktime_get_clocktai(void)
+{
+ struct timespec ts;
+
+ timekeeping_clocktai(&ts);
+ return timespec_to_ktime(ts);
+}
+EXPORT_SYMBOL(ktime_get_clocktai);
+
#ifdef CONFIG_NTP_PPS
/**
@@ -569,6 +584,7 @@
void __timekeeping_set_tai_offset(struct timekeeper *tk, s32 tai_offset)
{
tk->tai_offset = tai_offset;
+ tk->offs_tai = ktime_sub(tk->offs_real, ktime_set(tai_offset, 0));
}
/**
@@ -1539,7 +1555,8 @@
* Returns current monotonic time and updates the offsets
* Called from hrtimer_interupt() or retrigger_next_event()
*/
-ktime_t ktime_get_update_offsets(ktime_t *offs_real, ktime_t *offs_boot)
+ktime_t ktime_get_update_offsets(ktime_t *offs_real, ktime_t *offs_boot,
+ ktime_t *offs_tai)
{
struct timekeeper *tk = &timekeeper;
ktime_t now;
@@ -1554,6 +1571,7 @@
*offs_real = tk->offs_real;
*offs_boot = tk->offs_boot;
+ *offs_tai = tk->offs_tai;
} while (read_seqretry(&tk->lock, seq));
now = ktime_add_ns(ktime_set(secs, 0), nsecs);