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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-07-19 02:38:44 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-07-22 02:31:27 +0200 |
| commit | 8d8b2441db9647890251538f60b75a4e45fdef8d (patch) | |
| tree | 57f0acb27062c75ece6982231b81d67f7909f834 /kernel/power/suspend.c | |
| parent | PM / suspend: Export pm_suspend_target_state (diff) | |
| download | linux-8d8b2441db9647890251538f60b75a4e45fdef8d.tar.xz linux-8d8b2441db9647890251538f60b75a4e45fdef8d.zip | |
PM / sleep: Do not print debug messages by default
Debug messages from the system suspend/hibernation infrastructure can
fill up the entire kernel log buffer in some cases and anyway they
are only useful for debugging. They depend on CONFIG_PM_DEBUG, but
that is set as a rule as some generally useful diagnostic facilities
depend on it too.
For this reason, avoid printing those messages by default, but make
it possible to turn them on as needed with the help of a new sysfs
attribute under /sys/power/.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'kernel/power/suspend.c')
| -rw-r--r-- | kernel/power/suspend.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c index d0c0b96c2383..4f10773322fa 100644 --- a/kernel/power/suspend.c +++ b/kernel/power/suspend.c @@ -106,7 +106,7 @@ static void freeze_enter(void) static void s2idle_loop(void) { - pr_debug("PM: suspend-to-idle\n"); + pm_pr_dbg("suspend-to-idle\n"); do { freeze_enter(); @@ -124,7 +124,7 @@ static void s2idle_loop(void) pm_wakeup_clear(false); } while (!dpm_suspend_noirq(PMSG_SUSPEND)); - pr_debug("PM: resume from suspend-to-idle\n"); + pm_pr_dbg("resume from suspend-to-idle\n"); } void freeze_wake(void) @@ -547,7 +547,7 @@ static int enter_state(suspend_state_t state) trace_suspend_resume(TPS("sync_filesystems"), 0, false); #endif - pr_debug("PM: Preparing system for sleep (%s)\n", pm_states[state]); + pm_pr_dbg("Preparing system for sleep (%s)\n", pm_states[state]); pm_suspend_clear_flags(); error = suspend_prepare(state); if (error) @@ -557,13 +557,13 @@ static int enter_state(suspend_state_t state) goto Finish; trace_suspend_resume(TPS("suspend_enter"), state, false); - pr_debug("PM: Suspending system (%s)\n", pm_states[state]); + pm_pr_dbg("Suspending system (%s)\n", pm_states[state]); pm_restrict_gfp_mask(); error = suspend_devices_and_enter(state); pm_restore_gfp_mask(); Finish: - pr_debug("PM: Finishing wakeup.\n"); + pm_pr_dbg("Finishing wakeup.\n"); suspend_finish(); Unlock: mutex_unlock(&pm_mutex); |