diff options
Diffstat (limited to 'kernel/time')
| -rw-r--r-- | kernel/time/alarmtimer.c | 12 | ||||
| -rw-r--r-- | kernel/time/tick-broadcast.c | 16 | ||||
| -rw-r--r-- | kernel/time/timekeeping.c | 17 |
3 files changed, 35 insertions, 10 deletions
diff --git a/kernel/time/alarmtimer.c b/kernel/time/alarmtimer.c index 9265014cb4db..c6027fe9a4e6 100644 --- a/kernel/time/alarmtimer.c +++ b/kernel/time/alarmtimer.c @@ -669,12 +669,20 @@ static int __init has_wakealarm(struct device *dev, void *name_ptr) */ static int __init alarmtimer_init_late(void) { + struct device *dev; char *str; /* Find an rtc device and init the rtc_timer */ - class_find_device(rtc_class, NULL, &str, has_wakealarm); - if (str) + dev = class_find_device(rtc_class, NULL, &str, has_wakealarm); + /* If we have a device then str is valid. See has_wakealarm() */ + if (dev) { rtcdev = rtc_class_open(str); + /* + * Drop the reference we got in class_find_device, + * rtc_open takes its own. + */ + put_device(dev); + } if (!rtcdev) { printk(KERN_WARNING "No RTC device found, ALARM timers will" " not wake from suspend"); diff --git a/kernel/time/tick-broadcast.c b/kernel/time/tick-broadcast.c index 723c7637e55a..c7218d132738 100644 --- a/kernel/time/tick-broadcast.c +++ b/kernel/time/tick-broadcast.c @@ -456,23 +456,27 @@ void tick_broadcast_oneshot_control(unsigned long reason) unsigned long flags; int cpu; - raw_spin_lock_irqsave(&tick_broadcast_lock, flags); - /* * Periodic mode does not care about the enter/exit of power * states */ if (tick_broadcast_device.mode == TICKDEV_MODE_PERIODIC) - goto out; + return; - bc = tick_broadcast_device.evtdev; + /* + * We are called with preemtion disabled from the depth of the + * idle code, so we can't be moved away. + */ cpu = smp_processor_id(); td = &per_cpu(tick_cpu_device, cpu); dev = td->evtdev; if (!(dev->features & CLOCK_EVT_FEAT_C3STOP)) - goto out; + return; + + bc = tick_broadcast_device.evtdev; + raw_spin_lock_irqsave(&tick_broadcast_lock, flags); if (reason == CLOCK_EVT_NOTIFY_BROADCAST_ENTER) { if (!cpumask_test_cpu(cpu, tick_get_broadcast_oneshot_mask())) { cpumask_set_cpu(cpu, tick_get_broadcast_oneshot_mask()); @@ -489,8 +493,6 @@ void tick_broadcast_oneshot_control(unsigned long reason) tick_program_event(dev->next_event, 1); } } - -out: raw_spin_unlock_irqrestore(&tick_broadcast_lock, flags); } diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index 8e6a05a5915a..342408cf68dd 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -680,7 +680,7 @@ static void timekeeping_resume(void) clockevents_notify(CLOCK_EVT_NOTIFY_RESUME, NULL); /* Resume hrtimers */ - hres_timers_resume(); + hrtimers_resume(); } static int timekeeping_suspend(void) @@ -1099,6 +1099,21 @@ void get_xtime_and_monotonic_and_sleep_offset(struct timespec *xtim, } /** + * ktime_get_monotonic_offset() - get wall_to_monotonic in ktime_t format + */ +ktime_t ktime_get_monotonic_offset(void) +{ + unsigned long seq; + struct timespec wtom; + + do { + seq = read_seqbegin(&xtime_lock); + wtom = wall_to_monotonic; + } while (read_seqretry(&xtime_lock, seq)); + return timespec_to_ktime(wtom); +} + +/** * xtime_update() - advances the timekeeping infrastructure * @ticks: number of ticks, that have elapsed since the last call. * |
