PM / sleep: Mark suspend/hibernation start and finish
Regardless of whether or not debug messages from the core system suspend/hibernation code are enabled, it is useful to know when system-wide transitions start and finish (or fail), so print "info" messages at these points. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Mark Salyzyn <salyzyn@android.com>zero-colors
parent
8d8b2441db
commit
8915aa2042
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@ -692,6 +692,7 @@ int hibernate(void)
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goto Unlock;
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goto Unlock;
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}
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}
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pr_info("hibernation entry\n");
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pm_prepare_console();
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pm_prepare_console();
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error = __pm_notifier_call_chain(PM_HIBERNATION_PREPARE, -1, &nr_calls);
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error = __pm_notifier_call_chain(PM_HIBERNATION_PREPARE, -1, &nr_calls);
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if (error) {
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if (error) {
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@ -762,6 +763,8 @@ int hibernate(void)
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atomic_inc(&snapshot_device_available);
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atomic_inc(&snapshot_device_available);
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Unlock:
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Unlock:
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unlock_system_sleep();
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unlock_system_sleep();
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pr_info("hibernation exit\n");
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return error;
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return error;
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}
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}
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@ -868,6 +871,7 @@ static int software_resume(void)
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goto Unlock;
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goto Unlock;
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}
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}
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pr_info("resume from hibernation\n");
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pm_prepare_console();
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pm_prepare_console();
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error = __pm_notifier_call_chain(PM_RESTORE_PREPARE, -1, &nr_calls);
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error = __pm_notifier_call_chain(PM_RESTORE_PREPARE, -1, &nr_calls);
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if (error) {
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if (error) {
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@ -884,6 +888,7 @@ static int software_resume(void)
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Finish:
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Finish:
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__pm_notifier_call_chain(PM_POST_RESTORE, nr_calls, NULL);
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__pm_notifier_call_chain(PM_POST_RESTORE, nr_calls, NULL);
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pm_restore_console();
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pm_restore_console();
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pr_info("resume from hibernation failed (%d)\n", error);
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atomic_inc(&snapshot_device_available);
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atomic_inc(&snapshot_device_available);
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/* For success case, the suspend path will release the lock */
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/* For success case, the suspend path will release the lock */
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Unlock:
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Unlock:
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@ -584,6 +584,7 @@ int pm_suspend(suspend_state_t state)
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if (state <= PM_SUSPEND_ON || state >= PM_SUSPEND_MAX)
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if (state <= PM_SUSPEND_ON || state >= PM_SUSPEND_MAX)
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return -EINVAL;
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return -EINVAL;
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pr_info("PM: suspend entry (%s)\n", pm_states[state]);
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error = enter_state(state);
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error = enter_state(state);
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if (error) {
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if (error) {
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suspend_stats.fail++;
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suspend_stats.fail++;
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@ -591,6 +592,7 @@ int pm_suspend(suspend_state_t state)
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} else {
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} else {
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suspend_stats.success++;
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suspend_stats.success++;
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}
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}
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pr_info("PM: suspend exit\n");
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return error;
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return error;
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}
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}
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EXPORT_SYMBOL(pm_suspend);
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EXPORT_SYMBOL(pm_suspend);
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