diff options
Diffstat (limited to 'kernel/time')
| -rw-r--r-- | kernel/time/timekeeping.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index 9201474..d647773 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -161,18 +161,34 @@ static struct timespec xtime __attribute__ ((aligned (16))); static struct timespec wall_to_monotonic __attribute__ ((aligned (16))); static struct timespec total_sleep_time; +/* Offset clock monotonic -> clock realtime */ +static ktime_t offs_real; + +/* Offset clock monotonic -> clock boottime */ +static ktime_t offs_boot; + /* * The raw monotonic time for the CLOCK_MONOTONIC_RAW posix clock. */ static struct timespec raw_time; /* must hold write on xtime_lock */ +static void update_rt_offset(void) +{ + struct timespec tmp, *wtm = &wall_to_monotonic; + + set_normalized_timespec(&tmp, -wtm->tv_sec, -wtm->tv_nsec); + offs_real = timespec_to_ktime(tmp); +} + +/* must hold write on xtime_lock */ static void timekeeping_update(bool clearntp) { if (clearntp) { timekeeper.ntp_error = 0; ntp_clear(); } + update_rt_offset(); update_vsyscall(&xtime, &wall_to_monotonic, timekeeper.clock, timekeeper.mult); } @@ -587,6 +603,7 @@ void __init timekeeping_init(void) } set_normalized_timespec(&wall_to_monotonic, -boot.tv_sec, -boot.tv_nsec); + update_rt_offset(); total_sleep_time.tv_sec = 0; total_sleep_time.tv_nsec = 0; write_sequnlock_irqrestore(&xtime_lock, flags); @@ -595,6 +612,12 @@ void __init timekeeping_init(void) /* time in seconds when suspend began */ static struct timespec timekeeping_suspend_time; +static void update_sleep_time(struct timespec t) +{ + total_sleep_time = t; + offs_boot = timespec_to_ktime(t); +} + /** * __timekeeping_inject_sleeptime - Internal function to add sleep interval * @delta: pointer to a timespec delta value @@ -606,7 +629,7 @@ static void __timekeeping_inject_sleeptime(struct timespec *delta) { xtime = timespec_add(xtime, *delta); wall_to_monotonic = timespec_sub(wall_to_monotonic, *delta); - total_sleep_time = timespec_add(total_sleep_time, *delta); + update_sleep_time(timespec_add(total_sleep_time, *delta)); } |