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authorThomas Gleixner <tglx@linutronix.de>2006-01-09 20:52:22 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-10 08:01:35 -0800
commit753be6222728996974e9e12c185108fcabbb7c6e (patch)
treee7bce7ef8885919c2f0c11dbfe2e6d8c289096c3
parent67924be88607303a4459fe1c7dcd75527c338cf4 (diff)
downloadop-kernel-dev-753be6222728996974e9e12c185108fcabbb7c6e.zip
op-kernel-dev-753be6222728996974e9e12c185108fcabbb7c6e.tar.gz
[PATCH] hrtimer: deinline mktime and set_normalized_timespec
mktime() and set_normalized_timespec() are large inline functions used in many places: deinline them. From: George Anzinger, off-by-1 bugfix Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--include/linux/time.h52
-rw-r--r--kernel/time.c61
2 files changed, 66 insertions, 47 deletions
diff --git a/include/linux/time.h b/include/linux/time.h
index 797ccd8..9c444d9 100644
--- a/include/linux/time.h
+++ b/include/linux/time.h
@@ -38,38 +38,9 @@ static __inline__ int timespec_equal(struct timespec *a, struct timespec *b)
return (a->tv_sec == b->tv_sec) && (a->tv_nsec == b->tv_nsec);
}
-/* Converts Gregorian date to seconds since 1970-01-01 00:00:00.
- * Assumes input in normal date format, i.e. 1980-12-31 23:59:59
- * => year=1980, mon=12, day=31, hour=23, min=59, sec=59.
- *
- * [For the Julian calendar (which was used in Russia before 1917,
- * Britain & colonies before 1752, anywhere else before 1582,
- * and is still in use by some communities) leave out the
- * -year/100+year/400 terms, and add 10.]
- *
- * This algorithm was first published by Gauss (I think).
- *
- * WARNING: this function will overflow on 2106-02-07 06:28:16 on
- * machines were long is 32-bit! (However, as time_t is signed, we
- * will already get problems at other places on 2038-01-19 03:14:08)
- */
-static inline unsigned long
-mktime (unsigned int year, unsigned int mon,
- unsigned int day, unsigned int hour,
- unsigned int min, unsigned int sec)
-{
- if (0 >= (int) (mon -= 2)) { /* 1..12 -> 11,12,1..10 */
- mon += 12; /* Puts Feb last since it has leap day */
- year -= 1;
- }
-
- return (((
- (unsigned long) (year/4 - year/100 + year/400 + 367*mon/12 + day) +
- year*365 - 719499
- )*24 + hour /* now have hours */
- )*60 + min /* now have minutes */
- )*60 + sec; /* finally seconds */
-}
+extern unsigned long mktime (unsigned int year, unsigned int mon,
+ unsigned int day, unsigned int hour,
+ unsigned int min, unsigned int sec);
extern struct timespec xtime;
extern struct timespec wall_to_monotonic;
@@ -80,6 +51,8 @@ static inline unsigned long get_seconds(void)
return xtime.tv_sec;
}
+extern void set_normalized_timespec (struct timespec *ts, time_t sec, long nsec);
+
struct timespec current_kernel_time(void);
#define CURRENT_TIME (current_kernel_time())
@@ -99,21 +72,6 @@ extern void getnstimestamp(struct timespec *ts);
extern struct timespec timespec_trunc(struct timespec t, unsigned gran);
-static inline void
-set_normalized_timespec (struct timespec *ts, time_t sec, long nsec)
-{
- while (nsec >= NSEC_PER_SEC) {
- nsec -= NSEC_PER_SEC;
- ++sec;
- }
- while (nsec < 0) {
- nsec += NSEC_PER_SEC;
- --sec;
- }
- ts->tv_sec = sec;
- ts->tv_nsec = nsec;
-}
-
#endif /* __KERNEL__ */
#define NFDBITS __NFDBITS
diff --git a/kernel/time.c b/kernel/time.c
index b94bfa8..fa56988 100644
--- a/kernel/time.c
+++ b/kernel/time.c
@@ -583,6 +583,67 @@ void getnstimestamp(struct timespec *ts)
}
EXPORT_SYMBOL_GPL(getnstimestamp);
+/* Converts Gregorian date to seconds since 1970-01-01 00:00:00.
+ * Assumes input in normal date format, i.e. 1980-12-31 23:59:59
+ * => year=1980, mon=12, day=31, hour=23, min=59, sec=59.
+ *
+ * [For the Julian calendar (which was used in Russia before 1917,
+ * Britain & colonies before 1752, anywhere else before 1582,
+ * and is still in use by some communities) leave out the
+ * -year/100+year/400 terms, and add 10.]
+ *
+ * This algorithm was first published by Gauss (I think).
+ *
+ * WARNING: this function will overflow on 2106-02-07 06:28:16 on
+ * machines were long is 32-bit! (However, as time_t is signed, we
+ * will already get problems at other places on 2038-01-19 03:14:08)
+ */
+unsigned long
+mktime (unsigned int year, unsigned int mon,
+ unsigned int day, unsigned int hour,
+ unsigned int min, unsigned int sec)
+{
+ if (0 >= (int) (mon -= 2)) { /* 1..12 -> 11,12,1..10 */
+ mon += 12; /* Puts Feb last since it has leap day */
+ year -= 1;
+ }
+
+ return ((((unsigned long)
+ (year/4 - year/100 + year/400 + 367*mon/12 + day) +
+ year*365 - 719499
+ )*24 + hour /* now have hours */
+ )*60 + min /* now have minutes */
+ )*60 + sec; /* finally seconds */
+}
+
+/**
+ * set_normalized_timespec - set timespec sec and nsec parts and normalize
+ *
+ * @ts: pointer to timespec variable to be set
+ * @sec: seconds to set
+ * @nsec: nanoseconds to set
+ *
+ * Set seconds and nanoseconds field of a timespec variable and
+ * normalize to the timespec storage format
+ *
+ * Note: The tv_nsec part is always in the range of
+ * 0 <= tv_nsec < NSEC_PER_SEC
+ * For negative values only the tv_sec field is negative !
+ */
+void set_normalized_timespec (struct timespec *ts, time_t sec, long nsec)
+{
+ while (nsec >= NSEC_PER_SEC) {
+ nsec -= NSEC_PER_SEC;
+ ++sec;
+ }
+ while (nsec < 0) {
+ nsec += NSEC_PER_SEC;
+ --sec;
+ }
+ ts->tv_sec = sec;
+ ts->tv_nsec = nsec;
+}
+
#if (BITS_PER_LONG < 64)
u64 get_jiffies_64(void)
{
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