[4/4] PM: Print wall time at hibernate entry and exit

Commit Message

Mark Salyzyn July 18, 2017, 5:26 p.m. UTC

Permits power state and battery life diagnosis.

Feature activated by CONFIG_RTC_SHOW_TIME.

Signed-off-by: Mark Salyzyn <[e-mail]>
---
 kernel/power/hibernate.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

Patch

diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c
index e1914c7b85b1..0b5460f9189b 100644
--- a/kernel/power/hibernate.c
+++ b/kernel/power/hibernate.c
@@ -32,11 +32,11 @@ 
 #include <linux/ctype.h>
 #include <linux/genhd.h>
 #include <linux/ktime.h>
+#include <linux/rtc.h>
 #include <trace/events/power.h>
 
 #include "power.h"
 
-
 static int nocompress;
 static int noresume;
 static int nohibernate;
@@ -342,6 +342,7 @@  int hibernation_snapshot(int platform_mode)
 	pm_message_t msg;
 	int error;
 
+	rtc_show_time("PM: hibernation entry");
 	pm_suspend_clear_flags();
 	error = platform_begin(platform_mode);
 	if (error)
@@ -409,6 +410,7 @@  int hibernation_snapshot(int platform_mode)
 	thaw_kernel_threads();
  Cleanup:
 	swsusp_free();
+	rtc_show_time("PM: hibernation exit");
 	goto Close;
 }