clockevents: Provide functions to set and get the state
We want to rename dev->state, so provide proper get and set functions. Rename clockevents_set_state() to clockevents_switch_state() to avoid confusion. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Viresh Kumar <viresh.kumar@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org>
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472c4a9437
Коммит
d7eb231c71
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@ -94,8 +94,8 @@ u64 clockevent_delta2ns(unsigned long latch, struct clock_event_device *evt)
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}
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EXPORT_SYMBOL_GPL(clockevent_delta2ns);
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static int __clockevents_set_state(struct clock_event_device *dev,
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enum clock_event_state state)
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static int __clockevents_switch_state(struct clock_event_device *dev,
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enum clock_event_state state)
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{
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/* Transition with legacy set_mode() callback */
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if (dev->set_mode) {
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@ -151,17 +151,17 @@ static int __clockevents_set_state(struct clock_event_device *dev,
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}
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/**
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* clockevents_set_state - set the operating state of a clock event device
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* clockevents_switch_state - set the operating state of a clock event device
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* @dev: device to modify
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* @state: new state
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*
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* Must be called with interrupts disabled !
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*/
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void clockevents_set_state(struct clock_event_device *dev,
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enum clock_event_state state)
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void clockevents_switch_state(struct clock_event_device *dev,
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enum clock_event_state state)
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{
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if (dev->state != state) {
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if (__clockevents_set_state(dev, state))
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if (__clockevents_switch_state(dev, state))
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return;
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dev->state = state;
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@ -185,7 +185,7 @@ void clockevents_set_state(struct clock_event_device *dev,
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*/
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void clockevents_shutdown(struct clock_event_device *dev)
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{
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clockevents_set_state(dev, CLOCK_EVT_STATE_SHUTDOWN);
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clockevents_switch_state(dev, CLOCK_EVT_STATE_SHUTDOWN);
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dev->next_event.tv64 = KTIME_MAX;
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}
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@ -565,7 +565,7 @@ int __clockevents_update_freq(struct clock_event_device *dev, u32 freq)
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return clockevents_program_event(dev, dev->next_event, false);
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if (clockevent_state_periodic(dev))
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return __clockevents_set_state(dev, CLOCK_EVT_STATE_PERIODIC);
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return __clockevents_switch_state(dev, CLOCK_EVT_STATE_PERIODIC);
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return 0;
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}
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@ -619,7 +619,7 @@ void clockevents_exchange_device(struct clock_event_device *old,
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*/
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if (old) {
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module_put(old->owner);
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clockevents_set_state(old, CLOCK_EVT_STATE_DETACHED);
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clockevents_switch_state(old, CLOCK_EVT_STATE_DETACHED);
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list_del(&old->list);
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list_add(&old->list, &clockevents_released);
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}
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@ -529,7 +529,7 @@ static void tick_broadcast_set_event(struct clock_event_device *bc, int cpu,
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ktime_t expires)
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{
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if (!clockevent_state_oneshot(bc))
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clockevents_set_state(bc, CLOCK_EVT_STATE_ONESHOT);
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clockevents_switch_state(bc, CLOCK_EVT_STATE_ONESHOT);
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clockevents_program_event(bc, expires, 1);
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tick_broadcast_set_affinity(bc, cpumask_of(cpu));
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@ -537,7 +537,7 @@ static void tick_broadcast_set_event(struct clock_event_device *bc, int cpu,
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static void tick_resume_broadcast_oneshot(struct clock_event_device *bc)
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{
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clockevents_set_state(bc, CLOCK_EVT_STATE_ONESHOT);
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clockevents_switch_state(bc, CLOCK_EVT_STATE_ONESHOT);
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}
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/*
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@ -555,7 +555,7 @@ void tick_check_oneshot_broadcast_this_cpu(void)
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* switched over, leave the device alone.
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*/
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if (td->mode == TICKDEV_MODE_ONESHOT) {
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clockevents_set_state(td->evtdev,
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clockevents_switch_state(td->evtdev,
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CLOCK_EVT_STATE_ONESHOT);
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}
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}
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@ -659,7 +659,7 @@ static void broadcast_shutdown_local(struct clock_event_device *bc,
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if (dev->next_event.tv64 < bc->next_event.tv64)
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return;
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}
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clockevents_set_state(dev, CLOCK_EVT_STATE_SHUTDOWN);
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clockevents_switch_state(dev, CLOCK_EVT_STATE_SHUTDOWN);
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}
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/**
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@ -729,7 +729,7 @@ int tick_broadcast_oneshot_control(enum tick_broadcast_state state)
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cpumask_clear_cpu(cpu, tick_broadcast_oneshot_mask);
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} else {
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if (cpumask_test_and_clear_cpu(cpu, tick_broadcast_oneshot_mask)) {
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clockevents_set_state(dev, CLOCK_EVT_STATE_ONESHOT);
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clockevents_switch_state(dev, CLOCK_EVT_STATE_ONESHOT);
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/*
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* The cpu which was handling the broadcast
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* timer marked this cpu in the broadcast
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@ -847,7 +847,7 @@ void tick_broadcast_setup_oneshot(struct clock_event_device *bc)
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tick_broadcast_oneshot_mask, tmpmask);
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if (was_periodic && !cpumask_empty(tmpmask)) {
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clockevents_set_state(bc, CLOCK_EVT_STATE_ONESHOT);
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clockevents_switch_state(bc, CLOCK_EVT_STATE_ONESHOT);
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tick_broadcast_init_next_event(tmpmask,
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tick_next_period);
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tick_broadcast_set_event(bc, cpu, tick_next_period);
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@ -150,7 +150,7 @@ void tick_setup_periodic(struct clock_event_device *dev, int broadcast)
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if ((dev->features & CLOCK_EVT_FEAT_PERIODIC) &&
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!tick_broadcast_oneshot_active()) {
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clockevents_set_state(dev, CLOCK_EVT_STATE_PERIODIC);
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clockevents_switch_state(dev, CLOCK_EVT_STATE_PERIODIC);
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} else {
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unsigned long seq;
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ktime_t next;
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@ -160,7 +160,7 @@ void tick_setup_periodic(struct clock_event_device *dev, int broadcast)
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next = tick_next_period;
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} while (read_seqretry(&jiffies_lock, seq));
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clockevents_set_state(dev, CLOCK_EVT_STATE_ONESHOT);
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clockevents_switch_state(dev, CLOCK_EVT_STATE_ONESHOT);
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for (;;) {
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if (!clockevents_program_event(dev, next, false))
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@ -36,11 +36,22 @@ static inline int tick_device_is_functional(struct clock_event_device *dev)
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return !(dev->features & CLOCK_EVT_FEAT_DUMMY);
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}
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static inline enum clock_event_state clockevent_get_state(struct clock_event_device *dev)
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{
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return dev->state;
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}
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static inline void clockevent_set_state(struct clock_event_device *dev,
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enum clock_event_state state)
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{
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dev->state = state;
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}
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extern void clockevents_shutdown(struct clock_event_device *dev);
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extern void clockevents_exchange_device(struct clock_event_device *old,
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struct clock_event_device *new);
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extern void clockevents_set_state(struct clock_event_device *dev,
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enum clock_event_state state);
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extern void clockevents_switch_state(struct clock_event_device *dev,
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enum clock_event_state state);
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extern int clockevents_program_event(struct clock_event_device *dev,
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ktime_t expires, bool force);
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extern void clockevents_handle_noop(struct clock_event_device *dev);
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@ -32,7 +32,7 @@ int tick_program_event(ktime_t expires, int force)
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/*
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* We don't need the clock event device any more, stop it.
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*/
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clockevents_set_state(dev, CLOCK_EVT_STATE_ONESHOT_STOPPED);
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clockevents_switch_state(dev, CLOCK_EVT_STATE_ONESHOT_STOPPED);
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return 0;
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}
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@ -41,7 +41,7 @@ int tick_program_event(ktime_t expires, int force)
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* We need the clock event again, configure it in ONESHOT mode
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* before using it.
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*/
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clockevents_set_state(dev, CLOCK_EVT_STATE_ONESHOT);
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clockevents_switch_state(dev, CLOCK_EVT_STATE_ONESHOT);
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}
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return clockevents_program_event(dev, expires, force);
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@ -54,7 +54,7 @@ void tick_resume_oneshot(void)
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{
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struct clock_event_device *dev = __this_cpu_read(tick_cpu_device.evtdev);
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clockevents_set_state(dev, CLOCK_EVT_STATE_ONESHOT);
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clockevents_switch_state(dev, CLOCK_EVT_STATE_ONESHOT);
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clockevents_program_event(dev, ktime_get(), true);
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}
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@ -66,7 +66,7 @@ void tick_setup_oneshot(struct clock_event_device *newdev,
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ktime_t next_event)
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{
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newdev->event_handler = handler;
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clockevents_set_state(newdev, CLOCK_EVT_STATE_ONESHOT);
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clockevents_switch_state(newdev, CLOCK_EVT_STATE_ONESHOT);
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clockevents_program_event(newdev, next_event, true);
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}
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@ -97,7 +97,7 @@ int tick_switch_to_oneshot(void (*handler)(struct clock_event_device *))
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td->mode = TICKDEV_MODE_ONESHOT;
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dev->event_handler = handler;
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clockevents_set_state(dev, CLOCK_EVT_STATE_ONESHOT);
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clockevents_switch_state(dev, CLOCK_EVT_STATE_ONESHOT);
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tick_broadcast_switch_to_oneshot();
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return 0;
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}
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