From 8915aa2042f85ecf86d4a202ef6d04bf06f05cca Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 20 Jul 2017 03:38:07 +0200 Subject: 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 Acked-by: Mark Salyzyn --- kernel/power/suspend.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'kernel/power/suspend.c') diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c index 4f10773322fa..18cdb1596d27 100644 --- a/kernel/power/suspend.c +++ b/kernel/power/suspend.c @@ -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); -- cgit v1.2.3