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Subject[PATCH v3 19/22] time/time:Introduce the timespec64_to_jiffies/jiffies_to_timespec64 function
Date
This patch introduces the timespec64_to_jiffies() and jiffies_to_timespec64()
functions, that implement the conversion between cputime and timespec64. And
remove the old functions timespec64_to_jiffies()/jiffies_to_timespec64() to
jiffies.h file.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
---
include/linux/jiffies.h | 21 ++++++++++++++++++---
kernel/time/time.c | 12 ++++++------
2 files changed, 24 insertions(+), 9 deletions(-)

diff --git a/include/linux/jiffies.h b/include/linux/jiffies.h
index c367cbd..16a30c1 100644
--- a/include/linux/jiffies.h
+++ b/include/linux/jiffies.h
@@ -290,9 +290,24 @@ static inline u64 jiffies_to_nsecs(const unsigned long j)

extern unsigned long msecs_to_jiffies(const unsigned int m);
extern unsigned long usecs_to_jiffies(const unsigned int u);
-extern unsigned long timespec_to_jiffies(const struct timespec *value);
-extern void jiffies_to_timespec(const unsigned long jiffies,
- struct timespec *value);
+extern unsigned long __timespec_to_jiffies(unsigned long sec, long nsec);
+extern unsigned long timespec64_to_jiffies(const struct timespec64 *value);
+extern void jiffies_to_timespec64(const unsigned long jiffies,
+ struct timespec64 *value);
+static inline unsigned long timespec_to_jiffies(const struct timespec *value)
+{
+ return __timespec_to_jiffies(value->tv_sec, value->tv_nsec);
+}
+
+static inline void jiffies_to_timespec(const unsigned long jiffies,
+ struct timespec *value)
+{
+ struct timespec64 *ts;
+
+ *ts = timespec_to_timespec64(*value);
+ jiffies_to_timespec64(jiffies, ts);
+}
+
extern unsigned long timeval_to_jiffies(const struct timeval *value);
extern void jiffies_to_timeval(const unsigned long jiffies,
struct timeval *value);
diff --git a/kernel/time/time.c b/kernel/time/time.c
index f43011b..3aba16f 100644
--- a/kernel/time/time.c
+++ b/kernel/time/time.c
@@ -571,7 +571,7 @@ EXPORT_SYMBOL(usecs_to_jiffies);
* The >> (NSEC_JIFFIE_SC - SEC_JIFFIE_SC) converts the scaled nsec
* value to a scaled second value.
*/
-static unsigned long
+unsigned long
__timespec_to_jiffies(unsigned long sec, long nsec)
{
nsec = nsec + TICK_NSEC - 1;
@@ -585,17 +585,17 @@ __timespec_to_jiffies(unsigned long sec, long nsec)
(NSEC_JIFFIE_SC - SEC_JIFFIE_SC))) >> SEC_JIFFIE_SC;

}
+EXPORT_SYMBOL(__timespec_to_jiffies);

unsigned long
-timespec_to_jiffies(const struct timespec *value)
+timespec64_to_jiffies(const struct timespec64 *value)
{
return __timespec_to_jiffies(value->tv_sec, value->tv_nsec);
}
-
-EXPORT_SYMBOL(timespec_to_jiffies);
+EXPORT_SYMBOL(timespec64_to_jiffies);

void
-jiffies_to_timespec(const unsigned long jiffies, struct timespec *value)
+jiffies_to_timespec64(const unsigned long jiffies, struct timespec64 *value)
{
/*
* Convert jiffies to nanoseconds and separate with
@@ -606,7 +606,7 @@ jiffies_to_timespec(const unsigned long jiffies, struct timespec *value)
NSEC_PER_SEC, &rem);
value->tv_nsec = rem;
}
-EXPORT_SYMBOL(jiffies_to_timespec);
+EXPORT_SYMBOL(jiffies_to_timespec64);

/*
* We could use a similar algorithm to timespec_to_jiffies (with a
--
1.7.9.5


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