alarmtimer: add debug to identify alarmtimers
porting (CR).Based on KBA-200505201040 Print out timer wake-up info to debug the sources of pm8xxx_rtc_alarm wake-ups. Change-Id: I39f24dad0613a08844eefcd25076831589256e52 Signed-off-by: Ryan Lattrel <ryanl@motorola.com> Reviewed-on: https://gerrit.mot.com/1668046 SLTApproved: Slta Waiver SME-Granted: SME Approvals Granted Tested-by: Jira Key Reviewed-by: Ling Jin <lingjin@motorola.com> Submit-Approved: Jira Key (cherry picked from commit 0aa8db75da991b42037336ad28cbd629f3483636) Reviewed-on: https://gerrit.mot.com/1781686 Reviewed-by: Xiangpo Zhao <zhaoxp3@motorola.com>
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2 changed files with 23 additions and 0 deletions
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@ -238,6 +238,12 @@ static __poll_t timerfd_poll(struct file *file, poll_table *wait)
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spin_lock_irqsave(&ctx->wqh.lock, flags);
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if (ctx->ticks)
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events |= EPOLLIN;
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if (ctx->expired && isalarm(ctx))
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pr_info("%s: comm:%s pid:%d exp:%llu\n", __func__,
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current->comm, current->pid,
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ktime_to_ms(ctx->t.alarm.node.expires));
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spin_unlock_irqrestore(&ctx->wqh.lock, flags);
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return events;
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@ -63,6 +63,7 @@ static struct wakeup_source *ws;
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/* rtc timer and device for setting alarm wakeups at suspend */
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static struct rtc_timer rtctimer;
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static struct rtc_device *rtcdev;
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static int alarm_debug = 0;
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static DEFINE_SPINLOCK(rtcdev_lock);
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/**
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@ -211,6 +212,12 @@ static enum hrtimer_restart alarmtimer_fired(struct hrtimer *timer)
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alarmtimer_dequeue(base, alarm);
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spin_unlock_irqrestore(&base->lock, flags);
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if(alarm_debug & 0x1){
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pr_info("%s: type=%d, func=%pf, exp:%llu\n", __func__,
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alarm->type, alarm->function, ktime_to_ms(alarm->node.expires));
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alarm_debug &= 0xFE;
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}
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if (alarm->function)
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restart = alarm->function(alarm, base->gettime());
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@ -252,6 +259,7 @@ static int alarmtimer_suspend(struct device *dev)
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struct rtc_device *rtc;
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unsigned long flags;
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struct rtc_time tm;
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struct alarm* min_timer = NULL;
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spin_lock_irqsave(&freezer_delta_lock, flags);
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min = freezer_delta;
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@ -278,6 +286,7 @@ static int alarmtimer_suspend(struct device *dev)
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continue;
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delta = ktime_sub(next->expires, base->gettime());
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if (!min || (delta < min)) {
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min_timer = container_of(next, struct alarm, node);
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expires = next->expires;
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min = delta;
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type = i;
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@ -286,6 +295,14 @@ static int alarmtimer_suspend(struct device *dev)
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if (min == 0)
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return 0;
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if (min_timer){
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pr_info("%s: [%p]type=%d, func=%pf, exp:%llu\n", __func__,
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min_timer, min_timer->type, min_timer->function,
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ktime_to_ms(min_timer->node.expires));
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min_timer = NULL;
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}
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alarm_debug = 0x1;
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if (ktime_to_ns(min) < 2 * NSEC_PER_SEC) {
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__pm_wakeup_event(ws, 2 * MSEC_PER_SEC);
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return -EBUSY;
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