linux-kernel - [PATCH v2] timekeeping: Prints the amounts of time spent during suspend

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Message-Id: <1470951301-17179-1-git-send-email-kandoiruchi@google.com>
Date:	Thu, 11 Aug 2016 14:35:01 -0700
From:	Ruchi Kandoi <kandoiruchi@...gle.com>
To:	John Stultz <john.stultz@...aro.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	linux-kernel@...r.kernel.org,
	Ruchi Kandoi <kandoiruchi@...gle.com>,
	Dimitry Shmidt <dimitrysh@...gle.com>
Subject: [PATCH v2] timekeeping: Prints the amounts of time spent during suspend

This helps to keep track of real time while debugging using kernel logs.

Cc: John Stultz <john.stultz@...aro.org>
Signed-off-by: Ruchi Kandoi <kandoiruchi@...gle.com>
---
Changelog since v1:
- removed cross platform warnings.

 kernel/time/timekeeping_debug.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/kernel/time/timekeeping_debug.c b/kernel/time/timekeeping_debug.c
index f6bd652..7fdb34f 100644
--- a/kernel/time/timekeeping_debug.c
+++ b/kernel/time/timekeeping_debug.c
@@ -70,5 +70,7 @@ late_initcall(tk_debug_sleep_time_init);
 void tk_debug_account_sleep_time(struct timespec64 *t)
 {
 	sleep_time_bin[fls(t->tv_sec)]++;
+	pr_info("Suspended for %lld.%03lu seconds\n", (s64)t->tv_sec,
+			t->tv_nsec / NSEC_PER_MSEC);
 }
 
-- 
2.8.0.rc3.226.g39d4020