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Groups > linux.kernel > #1320354

[PATCH] cputime: Fix timeval-->cputime conversion

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The structure:
struct timeval {
	__kernel_time_t		tv_sec;		/* seconds */
	__kernel_suseconds_t	tv_usec;	/* microseconds */
};
both __kernel_time_t and __kernel_suseconds_t are short than u64
when it is 32bit platform, so force u64 conversion here.

Signed-off-by: zengtao <prime.zeng@huawei.com>
---
 include/asm-generic/cputime_nsecs.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/asm-generic/cputime_nsecs.h b/include/asm-generic/cputime_nsecs.h
index 0419485..e2f7ff9 100644
--- a/include/asm-generic/cputime_nsecs.h
+++ b/include/asm-generic/cputime_nsecs.h
@@ -91,7 +91,8 @@ static inline void cputime_to_timespec(const cputime_t ct, struct timespec *val)
  */
 static inline cputime_t timeval_to_cputime(const struct timeval *val)
 {
-	u64 ret = val->tv_sec * NSEC_PER_SEC + val->tv_usec * NSEC_PER_USEC;
+	u64 ret = (u64)val->tv_sec * NSEC_PER_SEC +
+			val->tv_usec * NSEC_PER_USEC;
 	return (__force cputime_t) ret;
 }
 static inline void cputime_to_timeval(const cputime_t ct, struct timeval *val)
-- 
1.9.1

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[PATCH] cputime: Fix timeval-->cputime conversion zengtao <prime.zeng@huawei.com> - 2016-01-28 08:10 +0100
  Re: [PATCH] cputime: Fix timeval-->cputime conversion Thomas Gleixner <tglx@linutronix.de> - 2016-01-28 09:30 +0100
    Re: [PATCH] cputime: Fix timeval-->cputime conversion Arnd Bergmann <arnd@arndb.de> - 2016-01-28 13:00 +0100
      RE: [PATCH] cputime: Fix timeval-->cputime conversion "Zengtao (B)" <prime.zeng@hisilicon.com> - 2016-01-29 04:20 +0100
        Re: [PATCH] cputime: Fix timeval-->cputime conversion Arnd Bergmann <arnd@arndb.de> - 2016-01-29 09:50 +0100
          RE: [PATCH] cputime: Fix timeval-->cputime conversion "Zengtao (B)" <prime.zeng@hisilicon.com> - 2016-01-30 03:40 +0100
          RE: [PATCH] cputime: Fix timeval-->cputime conversion "Zengtao (B)" <prime.zeng@hisilicon.com> - 2016-02-01 05:00 +0100
            RE: [PATCH] cputime: Fix timeval-->cputime conversion Thomas Gleixner <tglx@linutronix.de> - 2016-02-01 09:50 +0100
              RE: [PATCH] cputime: Fix timeval-->cputime conversion "Zengtao (B)" <prime.zeng@hisilicon.com> - 2016-02-02 04:00 +0100

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