forked from Minki/linux
staging: android-alarm: Fix namespace collision with upstreamed alarmtimers
The upstreamed alarmtimers are similar but not quite 100% API compatibile with the android in-kernel alarm api. To aid the transition, prefix the the android in-kernel api with android_ CC: Arve Hjønnevåg <arve@android.com> CC: Android Kernel Team <kernel-team@android.com> Signed-off-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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d47908b20c
commit
f2f28eacf2
drivers/staging/android
@ -55,7 +55,7 @@ static uint32_t alarm_pending;
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static uint32_t alarm_enabled;
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static uint32_t wait_pending;
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static struct alarm alarms[ANDROID_ALARM_TYPE_COUNT];
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static struct android_alarm alarms[ANDROID_ALARM_TYPE_COUNT];
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static long alarm_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
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{
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@ -90,7 +90,7 @@ static long alarm_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
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case ANDROID_ALARM_CLEAR(0):
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spin_lock_irqsave(&alarm_slock, flags);
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pr_alarm(IO, "alarm %d clear\n", alarm_type);
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alarm_try_to_cancel(&alarms[alarm_type]);
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android_alarm_try_to_cancel(&alarms[alarm_type]);
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if (alarm_pending) {
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alarm_pending &= ~alarm_type_mask;
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if (!alarm_pending && !wait_pending)
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@ -121,7 +121,7 @@ from_old_alarm_set:
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pr_alarm(IO, "alarm %d set %ld.%09ld\n", alarm_type,
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new_alarm_time.tv_sec, new_alarm_time.tv_nsec);
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alarm_enabled |= alarm_type_mask;
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alarm_start_range(&alarms[alarm_type],
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android_alarm_start_range(&alarms[alarm_type],
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timespec_to_ktime(new_alarm_time),
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timespec_to_ktime(new_alarm_time));
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spin_unlock_irqrestore(&alarm_slock, flags);
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@ -152,7 +152,7 @@ from_old_alarm_set:
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rv = -EFAULT;
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goto err1;
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}
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rv = alarm_set_rtc(new_rtc_time);
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rv = android_alarm_set_rtc(new_rtc_time);
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spin_lock_irqsave(&alarm_slock, flags);
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alarm_pending |= ANDROID_ALARM_TIME_CHANGE_MASK;
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wake_up(&alarm_wait_queue);
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@ -213,7 +213,7 @@ static int alarm_release(struct inode *inode, struct file *file)
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alarm_enabled &= ~alarm_type_mask;
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}
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spin_unlock_irqrestore(&alarm_slock, flags);
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alarm_cancel(&alarms[i]);
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android_alarm_cancel(&alarms[i]);
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spin_lock_irqsave(&alarm_slock, flags);
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}
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if (alarm_pending | wait_pending) {
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@ -230,7 +230,7 @@ static int alarm_release(struct inode *inode, struct file *file)
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return 0;
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}
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static void alarm_triggered(struct alarm *alarm)
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static void alarm_triggered(struct android_alarm *alarm)
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{
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unsigned long flags;
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uint32_t alarm_type_mask = 1U << alarm->type;
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@ -269,7 +269,7 @@ static int __init alarm_dev_init(void)
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return err;
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for (i = 0; i < ANDROID_ALARM_TYPE_COUNT; i++)
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alarm_init(&alarms[i], i, alarm_triggered);
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android_alarm_init(&alarms[i], i, alarm_triggered);
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wake_lock_init(&alarm_wake_lock, WAKE_LOCK_SUSPEND, "alarm");
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return 0;
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@ -70,7 +70,7 @@ static bool suspended;
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static void update_timer_locked(struct alarm_queue *base, bool head_removed)
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{
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struct alarm *alarm;
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struct android_alarm *alarm;
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bool is_wakeup = base == &alarms[ANDROID_ALARM_RTC_WAKEUP] ||
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base == &alarms[ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP];
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@ -85,7 +85,7 @@ static void update_timer_locked(struct alarm_queue *base, bool head_removed)
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if (!base->first)
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return;
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alarm = container_of(base->first, struct alarm, node);
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alarm = container_of(base->first, struct android_alarm, node);
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pr_alarm(FLOW, "selected alarm, type %d, func %pF at %lld\n",
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alarm->type, alarm->function, ktime_to_ns(alarm->expires));
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@ -102,12 +102,12 @@ static void update_timer_locked(struct alarm_queue *base, bool head_removed)
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hrtimer_start_expires(&base->timer, HRTIMER_MODE_ABS);
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}
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static void alarm_enqueue_locked(struct alarm *alarm)
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static void alarm_enqueue_locked(struct android_alarm *alarm)
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{
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struct alarm_queue *base = &alarms[alarm->type];
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struct rb_node **link = &base->alarms.rb_node;
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struct rb_node *parent = NULL;
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struct alarm *entry;
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struct android_alarm *entry;
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int leftmost = 1;
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pr_alarm(FLOW, "added alarm, type %d, func %pF at %lld\n",
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@ -122,7 +122,7 @@ static void alarm_enqueue_locked(struct alarm *alarm)
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while (*link) {
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parent = *link;
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entry = rb_entry(parent, struct alarm, node);
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entry = rb_entry(parent, struct android_alarm, node);
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/*
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* We dont care about collisions. Nodes with
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* the same expiry time stay together.
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@ -144,13 +144,13 @@ static void alarm_enqueue_locked(struct alarm *alarm)
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}
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/**
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* alarm_init - initialize an alarm
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* android_alarm_init - initialize an alarm
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* @alarm: the alarm to be initialized
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* @type: the alarm type to be used
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* @function: alarm callback function
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*/
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void alarm_init(struct alarm *alarm,
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enum android_alarm_type type, void (*function)(struct alarm *))
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void android_alarm_init(struct android_alarm *alarm,
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enum android_alarm_type type, void (*function)(struct android_alarm *))
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{
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RB_CLEAR_NODE(&alarm->node);
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alarm->type = type;
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@ -161,12 +161,13 @@ void alarm_init(struct alarm *alarm,
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/**
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* alarm_start_range - (re)start an alarm
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* android_alarm_start_range - (re)start an alarm
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* @alarm: the alarm to be added
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* @start: earliest expiry time
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* @end: expiry time
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*/
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void alarm_start_range(struct alarm *alarm, ktime_t start, ktime_t end)
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void android_alarm_start_range(struct android_alarm *alarm, ktime_t start,
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ktime_t end)
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{
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unsigned long flags;
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@ -178,7 +179,7 @@ void alarm_start_range(struct alarm *alarm, ktime_t start, ktime_t end)
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}
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/**
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* alarm_try_to_cancel - try to deactivate an alarm
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* android_alarm_try_to_cancel - try to deactivate an alarm
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* @alarm: alarm to stop
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*
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* Returns:
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@ -187,7 +188,7 @@ void alarm_start_range(struct alarm *alarm, ktime_t start, ktime_t end)
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* -1 when the alarm may currently be excuting the callback function and
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* cannot be stopped (it may also be inactive)
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*/
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int alarm_try_to_cancel(struct alarm *alarm)
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int android_alarm_try_to_cancel(struct android_alarm *alarm)
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{
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struct alarm_queue *base = &alarms[alarm->type];
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unsigned long flags;
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@ -218,17 +219,17 @@ int alarm_try_to_cancel(struct alarm *alarm)
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}
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/**
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* alarm_cancel - cancel an alarm and wait for the handler to finish.
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* android_alarm_cancel - cancel an alarm and wait for the handler to finish.
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* @alarm: the alarm to be cancelled
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*
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* Returns:
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* 0 when the alarm was not active
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* 1 when the alarm was active
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*/
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int alarm_cancel(struct alarm *alarm)
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int android_alarm_cancel(struct android_alarm *alarm)
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{
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for (;;) {
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int ret = alarm_try_to_cancel(alarm);
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int ret = android_alarm_try_to_cancel(alarm);
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if (ret >= 0)
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return ret;
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cpu_relax();
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@ -239,7 +240,7 @@ int alarm_cancel(struct alarm *alarm)
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* alarm_set_rtc - set the kernel and rtc walltime
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* @new_time: timespec value containing the new time
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*/
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int alarm_set_rtc(struct timespec new_time)
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int android_alarm_set_rtc(struct timespec new_time)
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{
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int i;
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int ret;
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@ -317,7 +318,7 @@ ktime_t alarm_get_elapsed_realtime(void)
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static enum hrtimer_restart alarm_timer_triggered(struct hrtimer *timer)
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{
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struct alarm_queue *base;
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struct alarm *alarm;
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struct android_alarm *alarm;
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unsigned long flags;
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ktime_t now;
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@ -331,7 +332,7 @@ static enum hrtimer_restart alarm_timer_triggered(struct hrtimer *timer)
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base - alarms, ktime_to_ns(now));
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while (base->first) {
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alarm = container_of(base->first, struct alarm, node);
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alarm = container_of(base->first, struct android_alarm, node);
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if (alarm->softexpires.tv64 > now.tv64) {
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pr_alarm(FLOW, "don't call alarm, %pF, %lld (s %lld)\n",
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alarm->function, ktime_to_ns(alarm->expires),
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@ -57,23 +57,24 @@ enum android_alarm_type {
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*
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*/
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struct alarm {
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struct android_alarm {
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struct rb_node node;
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enum android_alarm_type type;
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ktime_t softexpires;
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ktime_t expires;
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void (*function)(struct alarm *);
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void (*function)(struct android_alarm *);
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};
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void alarm_init(struct alarm *alarm,
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enum android_alarm_type type, void (*function)(struct alarm *));
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void alarm_start_range(struct alarm *alarm, ktime_t start, ktime_t end);
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int alarm_try_to_cancel(struct alarm *alarm);
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int alarm_cancel(struct alarm *alarm);
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void android_alarm_init(struct android_alarm *alarm,
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enum android_alarm_type type, void (*function)(struct android_alarm *));
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void android_alarm_start_range(struct android_alarm *alarm, ktime_t start,
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ktime_t end);
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int android_alarm_try_to_cancel(struct android_alarm *alarm);
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int android_alarm_cancel(struct android_alarm *alarm);
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ktime_t alarm_get_elapsed_realtime(void);
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/* set rtc while preserving elapsed realtime */
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int alarm_set_rtc(const struct timespec ts);
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int android_alarm_set_rtc(const struct timespec ts);
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#endif
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