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[209.132.180.67]) by mx.google.com with ESMTP id oe2si17597402pdb.149.2015.05.11.04.28.45; Mon, 11 May 2015 04:28:46 -0700 (PDT) Received-SPF: none (google.com: linux-kernel-owner@vger.kernel.org does not designate permitted sender hosts) client-ip=209.132.180.67; Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754171AbbEKL2j (ORCPT + 28 others); Mon, 11 May 2015 07:28:39 -0400 Received: from mail-pa0-f54.google.com ([209.85.220.54]:34312 "EHLO mail-pa0-f54.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753879AbbEKL2h (ORCPT ); Mon, 11 May 2015 07:28:37 -0400 Received: by pacyx8 with SMTP id yx8so107827756pac.1 for ; Mon, 11 May 2015 04:28:36 -0700 (PDT) X-Received: by 10.70.55.199 with SMTP id u7mr18461112pdp.42.1431343716726; Mon, 11 May 2015 04:28:36 -0700 (PDT) Received: from baolinwangubtpc.spreadtrum.com ([175.111.195.49]) by mx.google.com with ESMTPSA id bx6sm12862017pdb.39.2015.05.11.04.28.30 (version=TLSv1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 11 May 2015 04:28:36 -0700 (PDT) From: Baolin Wang To: arnd@arndb.de Cc: benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au, schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com, linux390@de.ibm.com, rth@twiddle.net, riel@redhat.com, cl@linux.com, tj@kernel.org, fweisbec@gmail.com, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, baolin.wang@linaro.org, y2038@lists.linaro.org Subject: [PATCH v3 20/22] cputime:Introduce the cputime_to_timespec64/timespec64_to_cputime function Date: Mon, 11 May 2015 19:28:25 +0800 Message-Id: <1431343705-30158-1-git-send-email-baolin.wang@linaro.org> X-Mailer: git-send-email 1.7.9.5 Sender: linux-kernel-owner@vger.kernel.org Precedence: list List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Removed-Original-Auth: Dkim didn't pass. X-Original-Sender: baolin.wang@linaro.org X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of patch+caf_=patchwork-forward=linaro.org@linaro.org designates 209.85.217.170 as permitted sender) smtp.mail=patch+caf_=patchwork-forward=linaro.org@linaro.org Mailing-list: list patchwork-forward@linaro.org; contact patchwork-forward+owners@linaro.org X-Google-Group-Id: 836684582541 List-Post: , List-Help: , List-Archive: List-Unsubscribe: , This patch introduces some functions for converting cputime to timespec64 and back, that repalce the timespec type with timespec64 type, as well as for arch/s390 and arch/powerpc architecture. And these new methods will replace the old cputime_to_timespec/timespec_to_cputime function to ready for 2038 issue. The cputime_to_timespec/timespec_to_cputime functions are moved to include/linux/cputime.h file for removing conveniently. Signed-off-by: Baolin Wang --- arch/powerpc/include/asm/cputime.h | 6 +++--- arch/s390/include/asm/cputime.h | 8 ++++---- include/asm-generic/cputime_jiffies.h | 10 +++++----- include/asm-generic/cputime_nsecs.h | 4 ++-- include/linux/cputime.h | 15 +++++++++++++++ 5 files changed, 29 insertions(+), 14 deletions(-) diff --git a/arch/powerpc/include/asm/cputime.h b/arch/powerpc/include/asm/cputime.h index e245255..5dda5c0 100644 --- a/arch/powerpc/include/asm/cputime.h +++ b/arch/powerpc/include/asm/cputime.h @@ -154,9 +154,9 @@ static inline cputime_t secs_to_cputime(const unsigned long sec) } /* - * Convert cputime <-> timespec + * Convert cputime <-> timespec64 */ -static inline void cputime_to_timespec(const cputime_t ct, struct timespec *p) +static inline void cputime_to_timespec64(const cputime_t ct, struct timespec64 *p) { u64 x = (__force u64) ct; unsigned int frac; @@ -168,7 +168,7 @@ static inline void cputime_to_timespec(const cputime_t ct, struct timespec *p) p->tv_nsec = x; } -static inline cputime_t timespec_to_cputime(const struct timespec *p) +static inline cputime_t timespec64_to_cputime(const struct timespec64 *p) { u64 ct; diff --git a/arch/s390/include/asm/cputime.h b/arch/s390/include/asm/cputime.h index b91e960..1266697 100644 --- a/arch/s390/include/asm/cputime.h +++ b/arch/s390/include/asm/cputime.h @@ -89,16 +89,16 @@ static inline cputime_t secs_to_cputime(const unsigned int s) } /* - * Convert cputime to timespec and back. + * Convert cputime to timespec64 and back. */ -static inline cputime_t timespec_to_cputime(const struct timespec *value) +static inline cputime_t timespec64_to_cputime(const struct timespec64 *value) { unsigned long long ret = value->tv_sec * CPUTIME_PER_SEC; return (__force cputime_t)(ret + __div(value->tv_nsec * CPUTIME_PER_USEC, NSEC_PER_USEC)); } -static inline void cputime_to_timespec(const cputime_t cputime, - struct timespec *value) +static inline void cputime_to_timespec64(const cputime_t cputime, + struct timespec64 *value) { unsigned long long __cputime = (__force unsigned long long) cputime; #ifndef CONFIG_64BIT diff --git a/include/asm-generic/cputime_jiffies.h b/include/asm-generic/cputime_jiffies.h index fe386fc..54e034c 100644 --- a/include/asm-generic/cputime_jiffies.h +++ b/include/asm-generic/cputime_jiffies.h @@ -44,12 +44,12 @@ typedef u64 __nocast cputime64_t; #define secs_to_cputime(sec) jiffies_to_cputime((sec) * HZ) /* - * Convert cputime to timespec and back. + * Convert cputime to timespec64 and back. */ -#define timespec_to_cputime(__val) \ - jiffies_to_cputime(timespec_to_jiffies(__val)) -#define cputime_to_timespec(__ct,__val) \ - jiffies_to_timespec(cputime_to_jiffies(__ct),__val) +#define timespec64_to_cputime(__val) \ + jiffies_to_cputime(timespec64_to_jiffies(__val)) +#define cputime_to_timespec64(__ct,__val) \ + jiffies_to_timespec64(cputime_to_jiffies(__ct),__val) /* * Convert cputime to timeval and back. diff --git a/include/asm-generic/cputime_nsecs.h b/include/asm-generic/cputime_nsecs.h index 0419485..65c875b 100644 --- a/include/asm-generic/cputime_nsecs.h +++ b/include/asm-generic/cputime_nsecs.h @@ -73,12 +73,12 @@ typedef u64 __nocast cputime64_t; /* * Convert cputime <-> timespec (nsec) */ -static inline cputime_t timespec_to_cputime(const struct timespec *val) +static inline cputime_t timespec64_to_cputime(const struct timespec64 *val) { u64 ret = val->tv_sec * NSEC_PER_SEC + val->tv_nsec; return (__force cputime_t) ret; } -static inline void cputime_to_timespec(const cputime_t ct, struct timespec *val) +static inline void cputime_to_timespec64(const cputime_t ct, struct timespec64 *val) { u32 rem; diff --git a/include/linux/cputime.h b/include/linux/cputime.h index f2eb2ee..f01896f 100644 --- a/include/linux/cputime.h +++ b/include/linux/cputime.h @@ -13,4 +13,19 @@ usecs_to_cputime((__nsecs) / NSEC_PER_USEC) #endif +static inline cputime_t timespec_to_cputime(const struct timespec *ts) +{ + struct timespec64 ts64 = timespec_to_timespec64(*ts); + return timespec64_to_cputime(&ts64); +} + +static inline void cputime_to_timespec(const cputime_t cputime, + struct timespec *value) +{ + struct timespec64 *ts64; + + *ts64 = timespec_to_timespec64(*value); + cputime_to_timespec64(cputime, ts64); +} + #endif /* __LINUX_CPUTIME_H */