netdev - [PATCH 01/11] linux/time64.h:Introduce the 'struct itimerspec64' for 64bit

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Message-Id: <1429509459-17068-2-git-send-email-baolin.wang@linaro.org>
Date:	Mon, 20 Apr 2015 13:57:29 +0800
From:	Baolin Wang <baolin.wang@...aro.org>
To:	tglx@...utronix.de
Cc:	arnd@...db.de, john.stultz@...aro.org, heenasirwani@...il.com,
	pang.xunlei@...aro.org, peterz@...radead.org,
	rafael.j.wysocki@...el.com, gregkh@...uxfoundation.org,
	richardcochran@...il.com, benh@...nel.crashing.org,
	paulus@...ba.org, mpe@...erman.id.au, schwidefsky@...ibm.com,
	heiko.carstens@...ibm.com, linux390@...ibm.com, rth@...ddle.net,
	riel@...hat.com, cl@...ux.com, tj@...nel.org, fweisbec@...il.com,
	ahh@...gle.com, pjt@...gle.com, linuxppc-dev@...ts.ozlabs.org,
	linux-s390@...r.kernel.org, linux-arch@...r.kernel.org,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	baolin.wang@...aro.org, y2038@...ts.linaro.org
Subject: [PATCH 01/11] linux/time64.h:Introduce the 'struct itimerspec64' for 64bit

This patch introduces the 'struct itimerspec64' for 64bit to replace itimerspec,
and also introduces the conversion methods: itimerspec64_to_itimerspec() and
itimerspec_to_itimerspec64(), that makes itimerspec to ready for 2038 year.

Signed-off-by: Baolin Wang <baolin.wang@...aro.org>
---
 include/linux/time64.h |   13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/include/linux/time64.h b/include/linux/time64.h
index a383147..3647bdd 100644
--- a/include/linux/time64.h
+++ b/include/linux/time64.h
@@ -18,6 +18,11 @@ struct timespec64 {
 };
 #endif
 
+struct itimerspec64 {
+	struct timespec64 it_interval;  /* timer period */
+	struct timespec64 it_value;     /* timer expiration */
+};
+
 /* Parameters used to convert the timespec values: */
 #define MSEC_PER_SEC	1000L
 #define USEC_PER_MSEC	1000L
@@ -187,4 +192,12 @@ static __always_inline void timespec64_add_ns(struct timespec64 *a, u64 ns)
 
 #endif
 
+#define itimerspec64_to_itimerspec(its64) \
+	({ (struct itimerspec){ .it_interval = timespec64_to_timespec((its64).it_interval), \
+				.it_value = timespec64_to_timespec((its64).it_value) }; })
+
+#define itimerspec_to_itimerspec64(its) \
+	({ (struct itimerspec64){ .it_interval = timespec_to_timespec64((its).it_interval), \
+				  .it_value = timespec_to_timespec64((its).it_value) }; })
+
 #endif /* _LINUX_TIME64_H */
-- 
1.7.9.5

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