From: luodw1 <luodw1@motorola.com>
Date: Wed, 9 Jan 2019 02:48:29 +0000 (+0800)
Subject: power:add UTC time when entry and exit suspend
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=696e7f067b515a8690fcd44b8a82814b71857fb0;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

power:add UTC time when entry and exit suspend

Change-Id: I1cb923cd01cec3c669dde0789a8c51a870d394fe
Signed-off-by: luodw1 <luodw1@motorola.com>
Reviewed-on: https://gerrit.mot.com/1291266
SLTApproved: Slta Waiver
SME-Granted: SME Approvals Granted
Tested-by: Jira Key
Reviewed-by: Xiangpo Zhao <zhaoxp3@motorola.com>
Submit-Approved: Jira Key
---

diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c
index 06a118fb6ded..45548e0e8be2 100644
--- a/kernel/power/suspend.c
+++ b/kernel/power/suspend.c
@@ -23,6 +23,7 @@
 #include <linux/kernel.h>
 #include <linux/list.h>
 #include <linux/mm.h>
+#include <linux/rtc.h>
 #include <linux/slab.h>
 #include <linux/export.h>
 #include <linux/suspend.h>
@@ -624,6 +625,18 @@ static int enter_state(suspend_state_t state)
 	return error;
 }
 
+static void pm_suspend_marker(char *annotation)
+{
+	struct timespec ts;
+	struct rtc_time tm;
+
+	getnstimeofday(&ts);
+	rtc_time_to_tm(ts.tv_sec, &tm);
+	pr_info("PM: suspend %s %d-%02d-%02d %02d:%02d:%02d.%09lu UTC\n",
+		annotation, tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday,
+		tm.tm_hour, tm.tm_min, tm.tm_sec, ts.tv_nsec);
+}
+
 /**
  * pm_suspend - Externally visible function for suspending the system.
  * @state: System sleep state to enter.
@@ -638,7 +651,7 @@ int pm_suspend(suspend_state_t state)
 	if (state <= PM_SUSPEND_ON || state >= PM_SUSPEND_MAX)
 		return -EINVAL;
 
-	pr_info("suspend entry (%s)\n", mem_sleep_labels[state]);
+	pm_suspend_marker("entry");
 	error = enter_state(state);
 	if (error) {
 		suspend_stats.fail++;
@@ -646,7 +659,7 @@ int pm_suspend(suspend_state_t state)
 	} else {
 		suspend_stats.success++;
 	}
-	pr_info("suspend exit\n");
+	pm_suspend_marker("exit");
 	return error;
 }
 EXPORT_SYMBOL(pm_suspend);