PM / sleep: Mark suspend/hibernation start and finish (8915aa20) · Commits · 戴 / test

kernel/power/hibernate.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -692,6 +692,7 @@ int hibernate(void)
		goto Unlock;
		}

		pr_info("hibernation entry\n");
		pm_prepare_console();
		error = __pm_notifier_call_chain(PM_HIBERNATION_PREPARE, -1, &nr_calls);
		if (error) {
		@@ -762,6 +763,8 @@ int hibernate(void)
		atomic_inc(&snapshot_device_available);
		Unlock:
		unlock_system_sleep();
		pr_info("hibernation exit\n");

		return error;
		}

		@@ -868,6 +871,7 @@ static int software_resume(void)
		goto Unlock;
		}

		pr_info("resume from hibernation\n");
		pm_prepare_console();
		error = __pm_notifier_call_chain(PM_RESTORE_PREPARE, -1, &nr_calls);
		if (error) {
		@@ -884,6 +888,7 @@ static int software_resume(void)
		Finish:
		__pm_notifier_call_chain(PM_POST_RESTORE, nr_calls, NULL);
		pm_restore_console();
		pr_info("resume from hibernation failed (%d)\n", error);
		atomic_inc(&snapshot_device_available);
		/* For success case, the suspend path will release the lock */
		Unlock:

+2 −0

Original line number	Diff line number	Diff line
		@@ -584,6 +584,7 @@ int pm_suspend(suspend_state_t state)
		if (state <= PM_SUSPEND_ON \|\| state >= PM_SUSPEND_MAX)
		return -EINVAL;

		pr_info("PM: suspend entry (%s)\n", pm_states[state]);
		error = enter_state(state);
		if (error) {
		suspend_stats.fail++;
		@@ -591,6 +592,7 @@ int pm_suspend(suspend_state_t state)
		} else {
		suspend_stats.success++;
		}
		pr_info("PM: suspend exit\n");
		return error;
		}
		EXPORT_SYMBOL(pm_suspend);