linux-kernel - [PATCH 07/12] time: Expose getrawmonotonic64 for in-kernel uses

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Message-Id: <1416599058-13836-8-git-send-email-john.stultz@linaro.org>
Date:	Fri, 21 Nov 2014 11:44:13 -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 07/12] time: Expose getrawmonotonic64 for in-kernel uses

Adds a timespec64 based getrawmonotonic64() implementation
that can be used as we convert internal users of
getrawmonotonic away from using timespecs.

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 | 15 ++++++++++++++-
 kernel/time/timekeeping.c   | 11 ++++++-----
 2 files changed, 20 insertions(+), 6 deletions(-)

diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h
index 6d76c65..e40a8d6 100644
--- a/include/linux/timekeeping.h
+++ b/include/linux/timekeeping.h
@@ -26,7 +26,7 @@ struct timespec __current_kernel_time(void);
  * timespec based interfaces
  */
 struct timespec get_monotonic_coarse(void);
-extern void getrawmonotonic(struct timespec *ts);
+extern void getrawmonotonic64(struct timespec64 *ts);
 extern void ktime_get_ts64(struct timespec64 *ts);
 
 extern int __getnstimeofday64(struct timespec64 *tv);
@@ -61,6 +61,11 @@ static inline void ktime_get_real_ts(struct timespec *ts)
 	getnstimeofday64(ts);
 }
 
+static inline void getrawmonotonic(struct timespec *ts)
+{
+	getrawmonotonic64(ts);
+}
+
 #else
 /**
  * Deprecated. Use do_settimeofday64().
@@ -105,6 +110,14 @@ static inline void ktime_get_real_ts(struct timespec *ts)
 	getnstimeofday64(&ts64);
 	*ts = timespec64_to_timespec(ts64);
 }
+
+static inline void getrawmonotonic(struct timespec *ts)
+{
+	struct timespec64 ts64;
+
+	getrawmonotonic64(&ts64);
+	*ts = timespec64_to_timespec(ts64);
+}
 #endif
 
 extern void getboottime(struct timespec *ts);
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index d37f775..b329586 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -894,12 +894,12 @@ int timekeeping_notify(struct clocksource *clock)
 }
 
 /**
- * getrawmonotonic - Returns the raw monotonic time in a timespec
- * @ts:		pointer to the timespec to be set
+ * getrawmonotonic64 - Returns the raw monotonic time in a timespec
+ * @ts:		pointer to the timespec64 to be set
  *
  * Returns the raw monotonic time (completely un-modified by ntp)
  */
-void getrawmonotonic(struct timespec *ts)
+void getrawmonotonic64(struct timespec64 *ts)
 {
 	struct timekeeper *tk = &tk_core.timekeeper;
 	struct timespec64 ts64;
@@ -914,9 +914,10 @@ void getrawmonotonic(struct timespec *ts)
 	} while (read_seqcount_retry(&tk_core.seq, seq));
 
 	timespec64_add_ns(&ts64, nsecs);
-	*ts = timespec64_to_timespec(ts64);
+	*ts = ts64;
 }
-EXPORT_SYMBOL(getrawmonotonic);
+EXPORT_SYMBOL(getrawmonotonic64);
+
 
 /**
  * timekeeping_valid_for_hres - Check if timekeeping is suitable for hres
-- 
1.9.1

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