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Groups > linux.kernel > #1690511

[PATCH 3/4] PM: Print wall time at suspend entry and exit

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Permits power state and battery life diagnosis.

Feature activated by CONFIG_RTC_SHOW_TIME.

Signed-off-by: Mark Salyzyn <salyzyn@android.com>
---
 kernel/power/suspend.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c
index 3ecf275d7e44..f44d2152ab3f 100644
--- a/kernel/power/suspend.c
+++ b/kernel/power/suspend.c
@@ -26,6 +26,7 @@
 #include <linux/suspend.h>
 #include <linux/syscore_ops.h>
 #include <linux/ftrace.h>
+#include <linux/rtc.h>
 #include <trace/events/power.h>
 #include <linux/compiler.h>
 #include <linux/moduleparam.h>
@@ -579,6 +580,7 @@ int pm_suspend(suspend_state_t state)
 	if (state <= PM_SUSPEND_ON || state >= PM_SUSPEND_MAX)
 		return -EINVAL;
 
+	rtc_show_time("PM: suspend entry");
 	error = enter_state(state);
 	if (error) {
 		suspend_stats.fail++;
@@ -586,6 +588,7 @@ int pm_suspend(suspend_state_t state)
 	} else {
 		suspend_stats.success++;
 	}
+	rtc_show_time("PM: suspend exit");
 	return error;
 }
 EXPORT_SYMBOL(pm_suspend);
-- 
2.13.2.932.g7449e964c-goog

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[PATCH 3/4] PM: Print wall time at suspend entry and exit Mark Salyzyn <salyzyn@android.com> - 2017-07-18 19:30 +0200
  Re: [PATCH 3/4] PM: Print wall time at suspend entry and exit "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2017-07-19 00:40 +0200
    Re: [PATCH 3/4] PM: Print wall time at suspend entry and exit Mark Salyzyn <salyzyn@android.com> - 2017-07-19 01:30 +0200

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