linux-kernel - [PATCH 08/12] time: Expose get_monotonic

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Message-Id: <1416599058-13836-9-git-send-email-john.stultz@linaro.org>
Date:	Fri, 21 Nov 2014 11:44:14 -0800
From:	John Stultz <john.stultz@...aro.org>
To:	lkml <linux-kernel@...r.kernel.org>
Cc:	John Stultz <john.stultz@...aro.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>,
	Arnd Bergmann <arnd.bergmann@...aro.org>,
	"pang.xunlei" <pang.xunlei@...aro.org>,
	Miroslav Lichvar <mlichvar@...hat.com>,
	Richard Cochran <richardcochran@...il.com>,
	Prarit Bhargava <prarit@...hat.com>,
	Alessandro Zummo <a.zummo@...ertech.it>
Subject: [PATCH 08/12] time: Expose get_monotonic_corase64() for in-kernel uses

Adds a timespec64 based get_monotonic_coarse64() implementation
that can be used as we convert internal users of
get_monotonic_corase away from usingtimespecs.

Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Ingo Molnar <mingo@...e.hu>
Cc: Arnd Bergmann <arnd.bergmann@...aro.org>
Cc: pang.xunlei <pang.xunlei@...aro.org>
Cc: Miroslav Lichvar <mlichvar@...hat.com>
Cc: Richard Cochran <richardcochran@...il.com>
Cc: Prarit Bhargava <prarit@...hat.com>
Cc: Alessandro Zummo <a.zummo@...ertech.it>
Signed-off-by: John Stultz <john.stultz@...aro.org>
---
 include/linux/timekeeping.h | 11 ++++++++++-
 kernel/time/timekeeping.c   |  4 ++--
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h
index e40a8d6..8cab4b7 100644
--- a/include/linux/timekeeping.h
+++ b/include/linux/timekeeping.h
@@ -25,7 +25,7 @@ struct timespec __current_kernel_time(void);
 /*
  * timespec based interfaces
  */
-struct timespec get_monotonic_coarse(void);
+struct timespec64 get_monotonic_coarse64(void);
 extern void getrawmonotonic64(struct timespec64 *ts);
 extern void ktime_get_ts64(struct timespec64 *ts);
 
@@ -66,6 +66,10 @@ static inline void getrawmonotonic(struct timespec *ts)
 	getrawmonotonic64(ts);
 }
 
+static inline struct timespec get_monotonic_coarse(void)
+{
+	return get_monotonic_coarse64();
+}
 #else
 /**
  * Deprecated. Use do_settimeofday64().
@@ -118,6 +122,11 @@ static inline void getrawmonotonic(struct timespec *ts)
 	getrawmonotonic64(&ts64);
 	*ts = timespec64_to_timespec(ts64);
 }
+
+static inline struct timespec get_monotonic_coarse(void)
+{
+	return timespec64_to_timespec(get_monotonic_coarse64());
+}
 #endif
 
 extern void getboottime(struct timespec *ts);
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index b329586..62440b1 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -1644,7 +1644,7 @@ struct timespec current_kernel_time(void)
 }
 EXPORT_SYMBOL(current_kernel_time);
 
-struct timespec get_monotonic_coarse(void)
+struct timespec64 get_monotonic_coarse64(void)
 {
 	struct timekeeper *tk = &tk_core.timekeeper;
 	struct timespec64 now, mono;
@@ -1660,7 +1660,7 @@ struct timespec get_monotonic_coarse(void)
 	set_normalized_timespec64(&now, now.tv_sec + mono.tv_sec,
 				now.tv_nsec + mono.tv_nsec);
 
-	return timespec64_to_timespec(now);
+	return now;
 }
 
 /*
-- 
1.9.1

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