timekeeping: Convert xtime_lock to raw_seqlock

Convert xtime_lock to raw_seqlock and fix up all users.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

5 files changed, 30 insertions, 31 deletions

diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c
index f6117a4c7cb8..b510ba954fe1 100644
--- a/kernel/time/ntp.c
+++ b/kernel/time/ntp.c
@@ -358,7 +358,7 @@ static enum hrtimer_restart ntp_leap_second(struct hrtimer *timer)
 {
 	enum hrtimer_restart res = HRTIMER_NORESTART;
 
-	write_seqlock(&xtime_lock);
+	raw_write_seqlock(&xtime_lock);
 
 	switch (time_state) {
 	case TIME_OK:
@@ -388,7 +388,7 @@ static enum hrtimer_restart ntp_leap_second(struct hrtimer *timer)
 		break;
 	}
 
-	write_sequnlock(&xtime_lock);
+	raw_write_sequnlock(&xtime_lock);
 
 	return res;
 }
@@ -663,7 +663,7 @@ int do_adjtimex(struct timex *txc)
 
 	getnstimeofday(&ts);
 
-	write_seqlock_irq(&xtime_lock);
+	raw_write_seqlock_irq(&xtime_lock);
 
 	if (txc->modes & ADJ_ADJTIME) {
 		long save_adjust = time_adjust;
@@ -705,7 +705,7 @@ int do_adjtimex(struct timex *txc)
 	/* fill PPS status fields */
 	pps_fill_timex(txc);
 
-	write_sequnlock_irq(&xtime_lock);
+	raw_write_sequnlock_irq(&xtime_lock);
 
 	txc->time.tv_sec = ts.tv_sec;
 	txc->time.tv_usec = ts.tv_nsec;
@@ -903,7 +903,7 @@ void hardpps(const struct timespec *phase_ts, const struct timespec *raw_ts)
 
 	pts_norm = pps_normalize_ts(*phase_ts);
 
-	write_seqlock_irqsave(&xtime_lock, flags);
+	raw_write_seqlock_irqsave(&xtime_lock, flags);
 
 	/* clear the error bits, they will be set again if needed */
 	time_status &= ~(STA_PPSJITTER | STA_PPSWANDER | STA_PPSERROR);
@@ -916,7 +916,7 @@ void hardpps(const struct timespec *phase_ts, const struct timespec *raw_ts)
 	 * just start the frequency interval */
 	if (unlikely(pps_fbase.tv_sec == 0)) {
 		pps_fbase = *raw_ts;
-		write_sequnlock_irqrestore(&xtime_lock, flags);
+		raw_write_sequnlock_irqrestore(&xtime_lock, flags);
 		return;
 	}
 
@@ -931,7 +931,7 @@ void hardpps(const struct timespec *phase_ts, const struct timespec *raw_ts)
 		time_status |= STA_PPSJITTER;
 		/* restart the frequency calibration interval */
 		pps_fbase = *raw_ts;
-		write_sequnlock_irqrestore(&xtime_lock, flags);
+		raw_write_sequnlock_irqrestore(&xtime_lock, flags);
 		pr_err("hardpps: PPSJITTER: bad pulse\n");
 		return;
 	}
@@ -948,7 +948,7 @@ void hardpps(const struct timespec *phase_ts, const struct timespec *raw_ts)
 
 	hardpps_update_phase(pts_norm.nsec);
 
-	write_sequnlock_irqrestore(&xtime_lock, flags);
+	raw_write_sequnlock_irqrestore(&xtime_lock, flags);
 }
 EXPORT_SYMBOL(hardpps);
 
diff --git a/kernel/time/tick-common.c b/kernel/time/tick-common.c
index 119528de8235..174dba1f0bd8 100644
--- a/kernel/time/tick-common.c
+++ b/kernel/time/tick-common.c
@@ -63,13 +63,13 @@ int tick_is_oneshot_available(void)
 static void tick_periodic(int cpu)
 {
 	if (tick_do_timer_cpu == cpu) {
-		write_seqlock(&xtime_lock);
+		raw_write_seqlock(&xtime_lock);
 
 		/* Keep track of the next tick event */
 		tick_next_period = ktime_add(tick_next_period, tick_period);
 
 		do_timer(1);
-		write_sequnlock(&xtime_lock);
+		raw_write_sequnlock(&xtime_lock);
 	}
 
 	update_process_times(user_mode(get_irq_regs()));
diff --git a/kernel/time/tick-internal.h b/kernel/time/tick-internal.h
index 1009b06d6f89..dbda970721dc 100644
--- a/kernel/time/tick-internal.h
+++ b/kernel/time/tick-internal.h
@@ -143,4 +143,4 @@ static inline int tick_device_is_functional(struct clock_event_device *dev)
 #endif
 
 extern void do_timer(unsigned long ticks);
-extern seqlock_t xtime_lock;
+extern raw_seqlock_t xtime_lock;
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index d5097c44b407..b7ae45b013eb 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -56,7 +56,7 @@ static void tick_do_update_jiffies64(ktime_t now)
 		return;
 
 	/* Reevalute with xtime_lock held */
-	write_seqlock(&xtime_lock);
+	raw_write_seqlock(&xtime_lock);
 
 	delta = ktime_sub(now, last_jiffies_update);
 	if (delta.tv64 >= tick_period.tv64) {
@@ -79,7 +79,7 @@ static void tick_do_update_jiffies64(ktime_t now)
 		/* Keep the tick_next_period variable up to date */
 		tick_next_period = ktime_add(last_jiffies_update, tick_period);
 	}
-	write_sequnlock(&xtime_lock);
+	raw_write_sequnlock(&xtime_lock);
 }
 
 /*
@@ -89,12 +89,12 @@ static ktime_t tick_init_jiffy_update(void)
 {
 	ktime_t period;
 
-	write_seqlock(&xtime_lock);
+	raw_write_seqlock(&xtime_lock);
 	/* Did we start the jiffies update yet ? */
 	if (last_jiffies_update.tv64 == 0)
 		last_jiffies_update = tick_next_period;
 	period = last_jiffies_update;
-	write_sequnlock(&xtime_lock);
+	raw_write_sequnlock(&xtime_lock);
 	return period;
 }
 
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index 342408cf68dd..bdbf452fe5b4 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -139,8 +139,7 @@ static inline s64 timekeeping_get_ns_raw(void)
  * This read-write spinlock protects us from races in SMP while
  * playing with xtime.
  */
-__cacheline_aligned_in_smp DEFINE_SEQLOCK(xtime_lock);
-
+__cacheline_aligned_in_smp DEFINE_RAW_SEQLOCK(xtime_lock);
 
 /*
  * The current time
@@ -361,7 +360,7 @@ int do_settimeofday(const struct timespec *tv)
 	if ((unsigned long)tv->tv_nsec >= NSEC_PER_SEC)
 		return -EINVAL;
 
-	write_seqlock_irqsave(&xtime_lock, flags);
+	raw_write_seqlock_irqsave(&xtime_lock, flags);
 
 	timekeeping_forward_now();
 
@@ -377,7 +376,7 @@ int do_settimeofday(const struct timespec *tv)
 	update_vsyscall(&xtime, &wall_to_monotonic, timekeeper.clock,
 				timekeeper.mult);
 
-	write_sequnlock_irqrestore(&xtime_lock, flags);
+	raw_write_sequnlock_irqrestore(&xtime_lock, flags);
 
 	/* signal hrtimers about time change */
 	clock_was_set();
@@ -401,7 +400,7 @@ int timekeeping_inject_offset(struct timespec *ts)
 	if ((unsigned long)ts->tv_nsec >= NSEC_PER_SEC)
 		return -EINVAL;
 
-	write_seqlock_irqsave(&xtime_lock, flags);
+	raw_write_seqlock_irqsave(&xtime_lock, flags);
 
 	timekeeping_forward_now();
 
@@ -414,7 +413,7 @@ int timekeeping_inject_offset(struct timespec *ts)
 	update_vsyscall(&xtime, &wall_to_monotonic, timekeeper.clock,
 				timekeeper.mult);
 
-	write_sequnlock_irqrestore(&xtime_lock, flags);
+	raw_write_sequnlock_irqrestore(&xtime_lock, flags);
 
 	/* signal hrtimers about time change */
 	clock_was_set();
@@ -568,7 +567,7 @@ void __init timekeeping_init(void)
 	read_persistent_clock(&now);
 	read_boot_clock(&boot);
 
-	write_seqlock_irqsave(&xtime_lock, flags);
+	raw_write_seqlock_irqsave(&xtime_lock, flags);
 
 	ntp_init();
 
@@ -589,7 +588,7 @@ void __init timekeeping_init(void)
 				-boot.tv_sec, -boot.tv_nsec);
 	total_sleep_time.tv_sec = 0;
 	total_sleep_time.tv_nsec = 0;
-	write_sequnlock_irqrestore(&xtime_lock, flags);
+	raw_write_sequnlock_irqrestore(&xtime_lock, flags);
 }
 
 /* time in seconds when suspend began */
@@ -630,7 +629,7 @@ void timekeeping_inject_sleeptime(struct timespec *delta)
 	if (!(ts.tv_sec == 0 && ts.tv_nsec == 0))
 		return;
 
-	write_seqlock_irqsave(&xtime_lock, flags);
+	raw_write_seqlock_irqsave(&xtime_lock, flags);
 	timekeeping_forward_now();
 
 	__timekeeping_inject_sleeptime(delta);
@@ -640,7 +639,7 @@ void timekeeping_inject_sleeptime(struct timespec *delta)
 	update_vsyscall(&xtime, &wall_to_monotonic, timekeeper.clock,
 				timekeeper.mult);
 
-	write_sequnlock_irqrestore(&xtime_lock, flags);
+	raw_write_sequnlock_irqrestore(&xtime_lock, flags);
 
 	/* signal hrtimers about time change */
 	clock_was_set();
@@ -663,7 +662,7 @@ static void timekeeping_resume(void)
 
 	clocksource_resume();
 
-	write_seqlock_irqsave(&xtime_lock, flags);
+	raw_write_seqlock_irqsave(&xtime_lock, flags);
 
 	if (timespec_compare(&ts, &timekeeping_suspend_time) > 0) {
 		ts = timespec_sub(ts, timekeeping_suspend_time);
@@ -673,7 +672,7 @@ static void timekeeping_resume(void)
 	timekeeper.clock->cycle_last = timekeeper.clock->read(timekeeper.clock);
 	timekeeper.ntp_error = 0;
 	timekeeping_suspended = 0;
-	write_sequnlock_irqrestore(&xtime_lock, flags);
+	raw_write_sequnlock_irqrestore(&xtime_lock, flags);
 
 	touch_softlockup_watchdog();
 
@@ -689,10 +688,10 @@ static int timekeeping_suspend(void)
 
 	read_persistent_clock(&timekeeping_suspend_time);
 
-	write_seqlock_irqsave(&xtime_lock, flags);
+	raw_write_seqlock_irqsave(&xtime_lock, flags);
 	timekeeping_forward_now();
 	timekeeping_suspended = 1;
-	write_sequnlock_irqrestore(&xtime_lock, flags);
+	raw_write_sequnlock_irqrestore(&xtime_lock, flags);
 
 	clockevents_notify(CLOCK_EVT_NOTIFY_SUSPEND, NULL);
 	clocksource_suspend();
@@ -1121,7 +1120,7 @@ ktime_t ktime_get_monotonic_offset(void)
  */
 void xtime_update(unsigned long ticks)
 {
-	write_seqlock(&xtime_lock);
+	raw_write_seqlock(&xtime_lock);
 	do_timer(ticks);
-	write_sequnlock(&xtime_lock);
+	raw_write_sequnlock(&xtime_lock);
 }