linux-kernel - [RFC PATCH 03/30] cputime: Introduce nsecs_to

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Message-Id: <1417199040-21044-4-git-send-email-fweisbec@gmail.com>
Date:	Fri, 28 Nov 2014 19:23:33 +0100
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	Frederic Weisbecker <fweisbec@...il.com>,
	Tony Luck <tony.luck@...el.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Oleg Nesterov <oleg@...hat.com>,
	Paul Mackerras <paulus@...ba.org>,
	Wu Fengguang <fengguang.wu@...el.com>,
	Ingo Molnar <mingo@...nel.org>, Rik van Riel <riel@...hat.com>,
	Martin Schwidefsky <schwidefsky@...ibm.com>
Subject: [RFC PATCH 03/30] cputime: Introduce nsecs_to_cputime64()

This will be needed for the conversion of kernel stat to nsecs.

Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc: Heiko Carstens <heiko.carstens@...ibm.com>
Cc: Ingo Molnar <mingo@...nel.org>
Cc: Martin Schwidefsky <schwidefsky@...ibm.com>
Cc: Oleg Nesterov <oleg@...hat.com>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Rik van Riel <riel@...hat.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Tony Luck <tony.luck@...el.com>
Cc: Wu Fengguang <fengguang.wu@...el.com>
Signed-off-by: Frederic Weisbecker <fweisbec@...il.com>
---
 include/linux/cputime.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/include/linux/cputime.h b/include/linux/cputime.h
index f2eb2ee..a225ab9 100644
--- a/include/linux/cputime.h
+++ b/include/linux/cputime.h
@@ -13,4 +13,14 @@
 	usecs_to_cputime((__nsecs) / NSEC_PER_USEC)
 #endif
 
+#ifndef nsecs_to_cputime
+# define nsecs_to_cputime(__nsecs)	\
+	usecs_to_cputime((__nsecs) / NSEC_PER_USEC)
+#endif
+
+#ifndef nsecs_to_cputime64
+# define nsecs_to_cputime64(__nsecs)	\
+	((__force cputime64_t) nsecs_to_cputime(__nsecs))
+#endif
+
 #endif /* __LINUX_CPUTIME_H */
-- 
2.1.3

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