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time: Remove all direct references to timekeeper

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Ingo noted that the numerous timekeeper.value references made
the timekeeping code ugly and caused many long lines that
had to be broken up. He recommended replacing timekeeper.value
references with tk->value.

This patch provides a local tk value for all top level time
functions and sets it to &timekeeper. Then all timekeeper
access is done via a tk pointer.

Signed-off-by: John Stultz <john.stultz@linaro.org>
Cc: Prarit Bhargava <prarit@redhat.com>
Link: http://lkml.kernel.org/r/1343414893-45779-6-git-send-email-john.stultz@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
John Stultz 2012-07-27 14:48:13 -04:00 committed by Ingo Molnar
parent 6d0ef903e2
commit 4e250fdde9
1 changed files with 154 additions and 128 deletions
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282
kernel/time/timekeeping.c
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@ -292,18 +292,19 @@ static void timekeeping_forward_now(struct timekeeper *tk)
*/
void getnstimeofday(struct timespec *ts)
{
struct timekeeper *tk = &timekeeper;
unsigned long seq;
s64 nsecs = 0;
WARN_ON(timekeeping_suspended);
do {
seq = read_seqbegin(&timekeeper.lock);
seq = read_seqbegin(&tk->lock);
ts->tv_sec = timekeeper.xtime_sec;
ts->tv_nsec = timekeeping_get_ns(&timekeeper);
ts->tv_sec = tk->xtime_sec;
ts->tv_nsec = timekeeping_get_ns(tk);
} while (read_seqretry(&timekeeper.lock, seq));
} while (read_seqretry(&tk->lock, seq));
timespec_add_ns(ts, nsecs);
}
@ -311,19 +312,18 @@ EXPORT_SYMBOL(getnstimeofday);
ktime_t ktime_get(void)
{
struct timekeeper *tk = &timekeeper;
unsigned int seq;
s64 secs, nsecs;
WARN_ON(timekeeping_suspended);
do {
seq = read_seqbegin(&timekeeper.lock);
secs = timekeeper.xtime_sec +
timekeeper.wall_to_monotonic.tv_sec;
nsecs = timekeeping_get_ns(&timekeeper) +
timekeeper.wall_to_monotonic.tv_nsec;
seq = read_seqbegin(&tk->lock);
secs = tk->xtime_sec + tk->wall_to_monotonic.tv_sec;
nsecs = timekeeping_get_ns(tk) + tk->wall_to_monotonic.tv_nsec;
} while (read_seqretry(&timekeeper.lock, seq));
} while (read_seqretry(&tk->lock, seq));
/*
* Use ktime_set/ktime_add_ns to create a proper ktime on
* 32-bit architectures without CONFIG_KTIME_SCALAR.
@ -342,18 +342,19 @@ EXPORT_SYMBOL_GPL(ktime_get);
*/
void ktime_get_ts(struct timespec *ts)
{
struct timekeeper *tk = &timekeeper;
struct timespec tomono;
unsigned int seq;
WARN_ON(timekeeping_suspended);
do {
seq = read_seqbegin(&timekeeper.lock);
ts->tv_sec = timekeeper.xtime_sec;
ts->tv_nsec = timekeeping_get_ns(&timekeeper);
tomono = timekeeper.wall_to_monotonic;
seq = read_seqbegin(&tk->lock);
ts->tv_sec = tk->xtime_sec;
ts->tv_nsec = timekeeping_get_ns(tk);
tomono = tk->wall_to_monotonic;
} while (read_seqretry(&timekeeper.lock, seq));
} while (read_seqretry(&tk->lock, seq));
set_normalized_timespec(ts, ts->tv_sec + tomono.tv_sec,
ts->tv_nsec + tomono.tv_nsec);
@ -373,22 +374,23 @@ EXPORT_SYMBOL_GPL(ktime_get_ts);
*/
void getnstime_raw_and_real(struct timespec *ts_raw, struct timespec *ts_real)
{
struct timekeeper *tk = &timekeeper;
unsigned long seq;
s64 nsecs_raw, nsecs_real;
WARN_ON_ONCE(timekeeping_suspended);
do {
seq = read_seqbegin(&timekeeper.lock);
seq = read_seqbegin(&tk->lock);
*ts_raw = timekeeper.raw_time;
ts_real->tv_sec = timekeeper.xtime_sec;
*ts_raw = tk->raw_time;
ts_real->tv_sec = tk->xtime_sec;
ts_real->tv_nsec = 0;
nsecs_raw = timekeeping_get_ns_raw(&timekeeper);
nsecs_real = timekeeping_get_ns(&timekeeper);
nsecs_raw = timekeeping_get_ns_raw(tk);
nsecs_real = timekeeping_get_ns(tk);
} while (read_seqretry(&timekeeper.lock, seq));
} while (read_seqretry(&tk->lock, seq));
timespec_add_ns(ts_raw, nsecs_raw);
timespec_add_ns(ts_real, nsecs_real);
@ -421,28 +423,28 @@ EXPORT_SYMBOL(do_gettimeofday);
*/
int do_settimeofday(const struct timespec *tv)
{
struct timekeeper *tk = &timekeeper;
struct timespec ts_delta, xt;
unsigned long flags;
if ((unsigned long)tv->tv_nsec >= NSEC_PER_SEC)
return -EINVAL;
write_seqlock_irqsave(&timekeeper.lock, flags);
write_seqlock_irqsave(&tk->lock, flags);
timekeeping_forward_now(&timekeeper);
timekeeping_forward_now(tk);
xt = tk_xtime(&timekeeper);
xt = tk_xtime(tk);
ts_delta.tv_sec = tv->tv_sec - xt.tv_sec;
ts_delta.tv_nsec = tv->tv_nsec - xt.tv_nsec;
tk_set_wall_to_mono(&timekeeper,
timespec_sub(timekeeper.wall_to_monotonic, ts_delta));
tk_set_wall_to_mono(tk, timespec_sub(tk->wall_to_monotonic, ts_delta));
tk_set_xtime(&timekeeper, tv);
tk_set_xtime(tk, tv);
timekeeping_update(&timekeeper, true);
timekeeping_update(tk, true);
write_sequnlock_irqrestore(&timekeeper.lock, flags);
write_sequnlock_irqrestore(&tk->lock, flags);
/* signal hrtimers about time change */
clock_was_set();
@ -459,23 +461,23 @@ EXPORT_SYMBOL(do_settimeofday);
*/
int timekeeping_inject_offset(struct timespec *ts)
{
struct timekeeper *tk = &timekeeper;
unsigned long flags;
if ((unsigned long)ts->tv_nsec >= NSEC_PER_SEC)
return -EINVAL;
write_seqlock_irqsave(&timekeeper.lock, flags);
write_seqlock_irqsave(&tk->lock, flags);
timekeeping_forward_now(&timekeeper);
timekeeping_forward_now(tk);
tk_xtime_add(&timekeeper, ts);
tk_set_wall_to_mono(&timekeeper,
timespec_sub(timekeeper.wall_to_monotonic, *ts));
tk_xtime_add(tk, ts);
tk_set_wall_to_mono(tk, timespec_sub(tk->wall_to_monotonic, *ts));
timekeeping_update(&timekeeper, true);
timekeeping_update(tk, true);
write_sequnlock_irqrestore(&timekeeper.lock, flags);
write_sequnlock_irqrestore(&tk->lock, flags);
/* signal hrtimers about time change */
clock_was_set();
@ -491,23 +493,24 @@ EXPORT_SYMBOL(timekeeping_inject_offset);
*/
static int change_clocksource(void *data)
{
struct timekeeper *tk = &timekeeper;
struct clocksource *new, *old;
unsigned long flags;
new = (struct clocksource *) data;
write_seqlock_irqsave(&timekeeper.lock, flags);
write_seqlock_irqsave(&tk->lock, flags);
timekeeping_forward_now(&timekeeper);
timekeeping_forward_now(tk);
if (!new->enable || new->enable(new) == 0) {
old = timekeeper.clock;
tk_setup_internals(&timekeeper, new);
old = tk->clock;
tk_setup_internals(tk, new);
if (old->disable)
old->disable(old);
}
timekeeping_update(&timekeeper, true);
timekeeping_update(tk, true);
write_sequnlock_irqrestore(&timekeeper.lock, flags);
write_sequnlock_irqrestore(&tk->lock, flags);
return 0;
}
@ -521,7 +524,9 @@ static int change_clocksource(void *data)
*/
void timekeeping_notify(struct clocksource *clock)
{
if (timekeeper.clock == clock)
struct timekeeper *tk = &timekeeper;
if (tk->clock == clock)
return;
stop_machine(change_clocksource, clock, NULL);
tick_clock_notify();
@ -550,15 +555,16 @@ EXPORT_SYMBOL_GPL(ktime_get_real);
*/
void getrawmonotonic(struct timespec *ts)
{
struct timekeeper *tk = &timekeeper;
unsigned long seq;
s64 nsecs;
do {
seq = read_seqbegin(&timekeeper.lock);
nsecs = timekeeping_get_ns_raw(&timekeeper);
*ts = timekeeper.raw_time;
seq = read_seqbegin(&tk->lock);
nsecs = timekeeping_get_ns_raw(tk);
*ts = tk->raw_time;
} while (read_seqretry(&timekeeper.lock, seq));
} while (read_seqretry(&tk->lock, seq));
timespec_add_ns(ts, nsecs);
}
@ -569,15 +575,16 @@ EXPORT_SYMBOL(getrawmonotonic);
*/
int timekeeping_valid_for_hres(void)
{
struct timekeeper *tk = &timekeeper;
unsigned long seq;
int ret;
do {
seq = read_seqbegin(&timekeeper.lock);
seq = read_seqbegin(&tk->lock);
ret = timekeeper.clock->flags & CLOCK_SOURCE_VALID_FOR_HRES;
ret = tk->clock->flags & CLOCK_SOURCE_VALID_FOR_HRES;
} while (read_seqretry(&timekeeper.lock, seq));
} while (read_seqretry(&tk->lock, seq));
return ret;
}
@ -587,15 +594,16 @@ int timekeeping_valid_for_hres(void)
*/
u64 timekeeping_max_deferment(void)
{
struct timekeeper *tk = &timekeeper;
unsigned long seq;
u64 ret;
do {
seq = read_seqbegin(&timekeeper.lock);
seq = read_seqbegin(&tk->lock);
ret = timekeeper.clock->max_idle_ns;
ret = tk->clock->max_idle_ns;
} while (read_seqretry(&timekeeper.lock, seq));
} while (read_seqretry(&tk->lock, seq));
return ret;
}
@ -635,6 +643,7 @@ void __attribute__((weak)) read_boot_clock(struct timespec *ts)
*/
void __init timekeeping_init(void)
{
struct timekeeper *tk = &timekeeper;
struct clocksource *clock;
unsigned long flags;
struct timespec now, boot, tmp;
@ -642,30 +651,30 @@ void __init timekeeping_init(void)
read_persistent_clock(&now);
read_boot_clock(&boot);
seqlock_init(&timekeeper.lock);
seqlock_init(&tk->lock);
ntp_init();
write_seqlock_irqsave(&timekeeper.lock, flags);
write_seqlock_irqsave(&tk->lock, flags);
clock = clocksource_default_clock();
if (clock->enable)
clock->enable(clock);
tk_setup_internals(&timekeeper, clock);
tk_setup_internals(tk, clock);
tk_set_xtime(&timekeeper, &now);
timekeeper.raw_time.tv_sec = 0;
timekeeper.raw_time.tv_nsec = 0;
tk_set_xtime(tk, &now);
tk->raw_time.tv_sec = 0;
tk->raw_time.tv_nsec = 0;
if (boot.tv_sec == 0 && boot.tv_nsec == 0)
boot = tk_xtime(&timekeeper);
boot = tk_xtime(tk);
set_normalized_timespec(&tmp, -boot.tv_sec, -boot.tv_nsec);
tk_set_wall_to_mono(&timekeeper, tmp);
tk_set_wall_to_mono(tk, tmp);
tmp.tv_sec = 0;
tmp.tv_nsec = 0;
tk_set_sleep_time(&timekeeper, tmp);
tk_set_sleep_time(tk, tmp);
write_sequnlock_irqrestore(&timekeeper.lock, flags);
write_sequnlock_irqrestore(&tk->lock, flags);
}
/* time in seconds when suspend began */
@ -703,6 +712,7 @@ static void __timekeeping_inject_sleeptime(struct timekeeper *tk,
*/
void timekeeping_inject_sleeptime(struct timespec *delta)
{
struct timekeeper *tk = &timekeeper;
unsigned long flags;
struct timespec ts;
@ -711,15 +721,15 @@ void timekeeping_inject_sleeptime(struct timespec *delta)
if (!(ts.tv_sec == 0 && ts.tv_nsec == 0))
return;
write_seqlock_irqsave(&timekeeper.lock, flags);
write_seqlock_irqsave(&tk->lock, flags);
timekeeping_forward_now(&timekeeper);
timekeeping_forward_now(tk);
__timekeeping_inject_sleeptime(&timekeeper, delta);
__timekeeping_inject_sleeptime(tk, delta);
timekeeping_update(&timekeeper, true);
timekeeping_update(tk, true);
write_sequnlock_irqrestore(&timekeeper.lock, flags);
write_sequnlock_irqrestore(&tk->lock, flags);
/* signal hrtimers about time change */
clock_was_set();
@ -734,6 +744,7 @@ void timekeeping_inject_sleeptime(struct timespec *delta)
*/
static void timekeeping_resume(void)
{
struct timekeeper *tk = &timekeeper;
unsigned long flags;
struct timespec ts;
@ -741,18 +752,18 @@ static void timekeeping_resume(void)
clocksource_resume();
write_seqlock_irqsave(&timekeeper.lock, flags);
write_seqlock_irqsave(&tk->lock, flags);
if (timespec_compare(&ts, &timekeeping_suspend_time) > 0) {
ts = timespec_sub(ts, timekeeping_suspend_time);
__timekeeping_inject_sleeptime(&timekeeper, &ts);
__timekeeping_inject_sleeptime(tk, &ts);
}
/* re-base the last cycle value */
timekeeper.clock->cycle_last = timekeeper.clock->read(timekeeper.clock);
timekeeper.ntp_error = 0;
tk->clock->cycle_last = tk->clock->read(tk->clock);
tk->ntp_error = 0;
timekeeping_suspended = 0;
timekeeping_update(&timekeeper, false);
write_sequnlock_irqrestore(&timekeeper.lock, flags);
timekeeping_update(tk, false);
write_sequnlock_irqrestore(&tk->lock, flags);
touch_softlockup_watchdog();
@ -764,14 +775,15 @@ static void timekeeping_resume(void)
static int timekeeping_suspend(void)
{
struct timekeeper *tk = &timekeeper;
unsigned long flags;
struct timespec delta, delta_delta;
static struct timespec old_delta;
read_persistent_clock(&timekeeping_suspend_time);
write_seqlock_irqsave(&timekeeper.lock, flags);
timekeeping_forward_now(&timekeeper);
write_seqlock_irqsave(&tk->lock, flags);
timekeeping_forward_now(tk);
timekeeping_suspended = 1;
/*
@ -780,7 +792,7 @@ static int timekeeping_suspend(void)
* try to compensate so the difference in system time
* and persistent_clock time stays close to constant.
*/
delta = timespec_sub(tk_xtime(&timekeeper), timekeeping_suspend_time);
delta = timespec_sub(tk_xtime(tk), timekeeping_suspend_time);
delta_delta = timespec_sub(delta, old_delta);
if (abs(delta_delta.tv_sec) >= 2) {
/*
@ -793,7 +805,7 @@ static int timekeeping_suspend(void)
timekeeping_suspend_time =
timespec_add(timekeeping_suspend_time, delta_delta);
}
write_sequnlock_irqrestore(&timekeeper.lock, flags);
write_sequnlock_irqrestore(&tk->lock, flags);
clockevents_notify(CLOCK_EVT_NOTIFY_SUSPEND, NULL);
clocksource_suspend();
@ -904,7 +916,7 @@ static void timekeeping_adjust(struct timekeeper *tk, s64 offset)
* the error. This causes the likely below to be unlikely.
*
* The proper fix is to avoid rounding up by using
* the high precision timekeeper.xtime_nsec instead of
* the high precision tk->xtime_nsec instead of
* xtime.tv_nsec everywhere. Fixing this will take some
* time.
*/
@ -1094,21 +1106,22 @@ static cycle_t logarithmic_accumulation(struct timekeeper *tk, cycle_t offset,
static void update_wall_time(void)
{
struct clocksource *clock;
struct timekeeper *tk = &timekeeper;
cycle_t offset;
int shift = 0, maxshift;
unsigned long flags;
s64 remainder;
write_seqlock_irqsave(&timekeeper.lock, flags);
write_seqlock_irqsave(&tk->lock, flags);
/* Make sure we're fully resumed: */
if (unlikely(timekeeping_suspended))
goto out;
clock = timekeeper.clock;
clock = tk->clock;
#ifdef CONFIG_ARCH_USES_GETTIMEOFFSET
offset = timekeeper.cycle_interval;
offset = tk->cycle_interval;
#else
offset = (clock->read(clock) - clock->cycle_last) & clock->mask;
#endif
@ -1121,19 +1134,19 @@ static void update_wall_time(void)
* chunk in one go, and then try to consume the next smaller
* doubled multiple.
*/
shift = ilog2(offset) - ilog2(timekeeper.cycle_interval);
shift = ilog2(offset) - ilog2(tk->cycle_interval);
shift = max(0, shift);
/* Bound shift to one less than what overflows tick_length */
maxshift = (64 - (ilog2(ntp_tick_length())+1)) - 1;
shift = min(shift, maxshift);
while (offset >= timekeeper.cycle_interval) {
offset = logarithmic_accumulation(&timekeeper, offset, shift);
if(offset < timekeeper.cycle_interval<<shift)
while (offset >= tk->cycle_interval) {
offset = logarithmic_accumulation(tk, offset, shift);
if (offset < tk->cycle_interval<<shift)
shift--;
}
/* correct the clock when NTP error is too big */
timekeeping_adjust(&timekeeper, offset);
timekeeping_adjust(tk, offset);
/*
@ -1145,21 +1158,21 @@ static void update_wall_time(void)
* the vsyscall implementations are converted to use xtime_nsec
* (shifted nanoseconds), this can be killed.
*/
remainder = timekeeper.xtime_nsec & ((1 << timekeeper.shift) - 1);
timekeeper.xtime_nsec -= remainder;
timekeeper.xtime_nsec += 1 << timekeeper.shift;
timekeeper.ntp_error += remainder << timekeeper.ntp_error_shift;
remainder = tk->xtime_nsec & ((1 << tk->shift) - 1);
tk->xtime_nsec -= remainder;
tk->xtime_nsec += 1 << tk->shift;
tk->ntp_error += remainder << tk->ntp_error_shift;
/*
* Finally, make sure that after the rounding
* xtime_nsec isn't larger than NSEC_PER_SEC
*/
accumulate_nsecs_to_secs(&timekeeper);
accumulate_nsecs_to_secs(tk);
timekeeping_update(&timekeeper, false);
timekeeping_update(tk, false);
out:
write_sequnlock_irqrestore(&timekeeper.lock, flags);
write_sequnlock_irqrestore(&tk->lock, flags);
}
@ -1176,11 +1189,12 @@ out:
*/
void getboottime(struct timespec *ts)
{
struct timekeeper *tk = &timekeeper;
struct timespec boottime = {
.tv_sec = timekeeper.wall_to_monotonic.tv_sec +
timekeeper.total_sleep_time.tv_sec,
.tv_nsec = timekeeper.wall_to_monotonic.tv_nsec +
timekeeper.total_sleep_time.tv_nsec
.tv_sec = tk->wall_to_monotonic.tv_sec +
tk->total_sleep_time.tv_sec,
.tv_nsec = tk->wall_to_monotonic.tv_nsec +
tk->total_sleep_time.tv_nsec
};
set_normalized_timespec(ts, -boottime.tv_sec, -boottime.tv_nsec);
@ -1198,19 +1212,20 @@ EXPORT_SYMBOL_GPL(getboottime);
*/
void get_monotonic_boottime(struct timespec *ts)
{
struct timekeeper *tk = &timekeeper;
struct timespec tomono, sleep;
unsigned int seq;
WARN_ON(timekeeping_suspended);
do {
seq = read_seqbegin(&timekeeper.lock);
ts->tv_sec = timekeeper.xtime_sec;
ts->tv_nsec = timekeeping_get_ns(&timekeeper);
tomono = timekeeper.wall_to_monotonic;
sleep = timekeeper.total_sleep_time;
seq = read_seqbegin(&tk->lock);
ts->tv_sec = tk->xtime_sec;
ts->tv_nsec = timekeeping_get_ns(tk);
tomono = tk->wall_to_monotonic;
sleep = tk->total_sleep_time;
} while (read_seqretry(&timekeeper.lock, seq));
} while (read_seqretry(&tk->lock, seq));
set_normalized_timespec(ts, ts->tv_sec + tomono.tv_sec + sleep.tv_sec,
ts->tv_nsec + tomono.tv_nsec + sleep.tv_nsec);
@ -1240,31 +1255,38 @@ EXPORT_SYMBOL_GPL(ktime_get_boottime);
*/
void monotonic_to_bootbased(struct timespec *ts)
{
*ts = timespec_add(*ts, timekeeper.total_sleep_time);
struct timekeeper *tk = &timekeeper;
*ts = timespec_add(*ts, tk->total_sleep_time);
}
EXPORT_SYMBOL_GPL(monotonic_to_bootbased);
unsigned long get_seconds(void)
{
return timekeeper.xtime_sec;
struct timekeeper *tk = &timekeeper;
return tk->xtime_sec;
}
EXPORT_SYMBOL(get_seconds);
struct timespec __current_kernel_time(void)
{
return tk_xtime(&timekeeper);
struct timekeeper *tk = &timekeeper;
return tk_xtime(tk);
}
struct timespec current_kernel_time(void)
{
struct timekeeper *tk = &timekeeper;
struct timespec now;
unsigned long seq;
do {
seq = read_seqbegin(&timekeeper.lock);
seq = read_seqbegin(&tk->lock);
now = tk_xtime(&timekeeper);
} while (read_seqretry(&timekeeper.lock, seq));
now = tk_xtime(tk);
} while (read_seqretry(&tk->lock, seq));
return now;
}
@ -1272,15 +1294,16 @@ EXPORT_SYMBOL(current_kernel_time);
struct timespec get_monotonic_coarse(void)
{
struct timekeeper *tk = &timekeeper;
struct timespec now, mono;
unsigned long seq;
do {
seq = read_seqbegin(&timekeeper.lock);
seq = read_seqbegin(&tk->lock);
now = tk_xtime(&timekeeper);
mono = timekeeper.wall_to_monotonic;
} while (read_seqretry(&timekeeper.lock, seq));
now = tk_xtime(tk);
mono = tk->wall_to_monotonic;
} while (read_seqretry(&tk->lock, seq));
set_normalized_timespec(&now, now.tv_sec + mono.tv_sec,
now.tv_nsec + mono.tv_nsec);
@ -1309,14 +1332,15 @@ void do_timer(unsigned long ticks)
void get_xtime_and_monotonic_and_sleep_offset(struct timespec *xtim,
struct timespec *wtom, struct timespec *sleep)
{
struct timekeeper *tk = &timekeeper;
unsigned long seq;
do {
seq = read_seqbegin(&timekeeper.lock);
*xtim = tk_xtime(&timekeeper);
*wtom = timekeeper.wall_to_monotonic;
*sleep = timekeeper.total_sleep_time;
} while (read_seqretry(&timekeeper.lock, seq));
seq = read_seqbegin(&tk->lock);
*xtim = tk_xtime(tk);
*wtom = tk->wall_to_monotonic;
*sleep = tk->total_sleep_time;
} while (read_seqretry(&tk->lock, seq));
}
#ifdef CONFIG_HIGH_RES_TIMERS
@ -1330,19 +1354,20 @@ void get_xtime_and_monotonic_and_sleep_offset(struct timespec *xtim,
*/
ktime_t ktime_get_update_offsets(ktime_t *offs_real, ktime_t *offs_boot)
{
struct timekeeper *tk = &timekeeper;
ktime_t now;
unsigned int seq;
u64 secs, nsecs;
do {
seq = read_seqbegin(&timekeeper.lock);
seq = read_seqbegin(&tk->lock);
secs = timekeeper.xtime_sec;
nsecs = timekeeping_get_ns(&timekeeper);
secs = tk->xtime_sec;
nsecs = timekeeping_get_ns(tk);
*offs_real = timekeeper.offs_real;
*offs_boot = timekeeper.offs_boot;
} while (read_seqretry(&timekeeper.lock, seq));
*offs_real = tk->offs_real;
*offs_boot = tk->offs_boot;
} while (read_seqretry(&tk->lock, seq));
now = ktime_add_ns(ktime_set(secs, 0), nsecs);
now = ktime_sub(now, *offs_real);
@ -1355,13 +1380,14 @@ ktime_t ktime_get_update_offsets(ktime_t *offs_real, ktime_t *offs_boot)
*/
ktime_t ktime_get_monotonic_offset(void)
{
struct timekeeper *tk = &timekeeper;
unsigned long seq;
struct timespec wtom;
do {
seq = read_seqbegin(&timekeeper.lock);
wtom = timekeeper.wall_to_monotonic;
} while (read_seqretry(&timekeeper.lock, seq));
seq = read_seqbegin(&tk->lock);
wtom = tk->wall_to_monotonic;
} while (read_seqretry(&tk->lock, seq));
return timespec_to_ktime(wtom);
}