Commit-ID: d6d29896c665dfd50e6e0be7a9039901640433a3
Gitweb: http://git.kernel.org/tip/d6d29896c665dfd50e6e0be7a9039901640433a3
Author: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
AuthorDate: Wed, 16 Jul 2014 21:04:04 +0000
Committer: John Stultz <john.stultz@xxxxxxxxxx>
CommitDate: Wed, 23 Jul 2014 10:17:55 -0700
timekeeping: Provide timespec64 based interfaces
To convert callers of the core code to timespec64 we need to provide
the proper interfaces.
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Signed-off-by: John Stultz <john.stultz@xxxxxxxxxx>
---
include/linux/timekeeping.h | 66 +++++++++++++++++++++++++++++++++++++++++----
kernel/time/ntp.c | 7 ++---
kernel/time/timekeeping.c | 47 +++++++++++++++-----------------
3 files changed, 87 insertions(+), 33 deletions(-)
diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h
index e81c35b..3eb19e3 100644
--- a/include/linux/timekeeping.h
+++ b/include/linux/timekeeping.h
@@ -29,15 +29,71 @@ struct timespec get_monotonic_coarse(void);
extern void getrawmonotonic(struct timespec *ts);
extern void monotonic_to_bootbased(struct timespec *ts);
extern void get_monotonic_boottime(struct timespec *ts);
-extern void ktime_get_ts(struct timespec *ts);
+extern void ktime_get_ts64(struct timespec64 *ts);
+
+extern int __getnstimeofday64(struct timespec64 *tv);
+extern void getnstimeofday64(struct timespec64 *tv);
+
+#if BITS_PER_LONG == 64
+static inline int __getnstimeofday(struct timespec *ts)
+{
+ return __getnstimeofday64(ts);
+}
+
+static inline void getnstimeofday(struct timespec *ts)
+{
+ getnstimeofday64(ts);
+}
+
+static inline void ktime_get_ts(struct timespec *ts)
+{
+ ktime_get_ts64(ts);
+}
+
+static inline void ktime_get_real_ts(struct timespec *ts)
+{
+ getnstimeofday64(ts);
+}
+
+#else
+static inline int __getnstimeofday(struct timespec *ts)
+{
+ struct timespec64 ts64;
+ int ret = __getnstimeofday64(&ts64);
+
+ *ts = timespec64_to_timespec(ts64);
+ return ret;
+}
+
+static inline void getnstimeofday(struct timespec *ts)
+{
+ struct timespec64 ts64;
+
+ getnstimeofday64(&ts64);
+ *ts = timespec64_to_timespec(ts64);
+}
+
+static inline void ktime_get_ts(struct timespec *ts)
+{
+ struct timespec64 ts64;
+
+ ktime_get_ts64(&ts64);
+ *ts = timespec64_to_timespec(ts64);
+}
+
+static inline void ktime_get_real_ts(struct timespec *ts)
+{
+ struct timespec64 ts64;
+
+ getnstimeofday64(&ts64);
+ *ts = timespec64_to_timespec(ts64);
+}
+#endif
-extern int __getnstimeofday(struct timespec *tv);
-extern void getnstimeofday(struct timespec *tv);
extern void getboottime(struct timespec *ts);
#define do_posix_clock_monotonic_gettime(ts) ktime_get_ts(ts)
-#define ktime_get_real_ts(ts) getnstimeofday(ts)
-
+#define ktime_get_real_ts64(ts) getnstimeofday64(ts)
/*
* ktime_t based interfaces
diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c
index 6e87df9..87a346f 100644
--- a/kernel/time/ntp.c
+++ b/kernel/time/ntp.c
@@ -466,7 +466,8 @@ static DECLARE_DELAYED_WORK(sync_cmos_work, sync_cmos_clock);
static void sync_cmos_clock(struct work_struct *work)
{
- struct timespec now, next;
+ struct timespec64 now;
+ struct timespec next;
int fail = 1;
/*
@@ -485,9 +486,9 @@ static void sync_cmos_clock(struct work_struct *work)
return;
}
- getnstimeofday(&now);
+ getnstimeofday64(&now);
if (abs(now.tv_nsec - (NSEC_PER_SEC / 2)) <= tick_nsec * 5) {
- struct timespec adjust = now;
+ struct timespec adjust = timespec64_to_timespec(now);
fail = -ENODEV;
if (persistent_clock_is_local)
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index 84a2075..3210c9e 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -285,13 +285,13 @@ static void timekeeping_forward_now(struct timekeeper *tk)
}
/**
- * __getnstimeofday - Returns the time of day in a timespec.
+ * __getnstimeofday64 - Returns the time of day in a timespec64.
* @ts: pointer to the timespec to be set
*
* Updates the time of day in the timespec.
* Returns 0 on success, or -ve when suspended (timespec will be undefined).
*/
-int __getnstimeofday(struct timespec *ts)
+int __getnstimeofday64(struct timespec64 *ts)
{
struct timekeeper *tk = &timekeeper;
unsigned long seq;
@@ -306,7 +306,7 @@ int __getnstimeofday(struct timespec *ts)
} while (read_seqcount_retry(&timekeeper_seq, seq));
ts->tv_nsec = 0;
- timespec_add_ns(ts, nsecs);
+ timespec64_add_ns(ts, nsecs);
/*
* Do not bail out early, in case there were callers still using
@@ -316,19 +316,19 @@ int __getnstimeofday(struct timespec *ts)
return -EAGAIN;
return 0;
}
-EXPORT_SYMBOL(__getnstimeofday);
+EXPORT_SYMBOL(__getnstimeofday64);
/**
- * getnstimeofday - Returns the time of day in a timespec.
+ * getnstimeofday64 - Returns the time of day in a timespec64.
* @ts: pointer to the timespec to be set
*
* Returns the time of day in a timespec (WARN if suspended).
*/
-void getnstimeofday(struct timespec *ts)
+void getnstimeofday64(struct timespec64 *ts)
{
- WARN_ON(__getnstimeofday(ts));
+ WARN_ON(__getnstimeofday64(ts));
}
-EXPORT_SYMBOL(getnstimeofday);
+EXPORT_SYMBOL(getnstimeofday64);
ktime_t ktime_get(void)
{
@@ -350,17 +350,17 @@ ktime_t ktime_get(void)
EXPORT_SYMBOL_GPL(ktime_get);
/**
- * ktime_get_ts - get the monotonic clock in timespec format
+ * ktime_get_ts64 - get the monotonic clock in timespec64 format
* @ts: pointer to timespec variable
*
* The function calculates the monotonic clock from the realtime
* clock and the wall_to_monotonic offset and stores the result
* in normalized timespec format in the variable pointed to by @ts.
*/
-void ktime_get_ts(struct timespec *ts)
+void ktime_get_ts64(struct timespec64 *ts)
{
struct timekeeper *tk = &timekeeper;
- struct timespec64 ts64, tomono;
+ struct timespec64 tomono;
s64 nsec;
unsigned int seq;
@@ -368,18 +368,17 @@ void ktime_get_ts(struct timespec *ts)
do {
seq = read_seqcount_begin(&timekeeper_seq);
- ts64.tv_sec = tk->xtime_sec;
+ ts->tv_sec = tk->xtime_sec;
nsec = timekeeping_get_ns(tk);
tomono = tk->wall_to_monotonic;
} while (read_seqcount_retry(&timekeeper_seq, seq));
- ts64.tv_sec += tomono.tv_sec;
- ts64.tv_nsec = 0;
- timespec64_add_ns(&ts64, nsec + tomono.tv_nsec);
- *ts = timespec64_to_timespec(ts64);
+ ts->tv_sec += tomono.tv_sec;
+ ts->tv_nsec = 0;
+ timespec64_add_ns(ts, nsec + tomono.tv_nsec);
}
-EXPORT_SYMBOL_GPL(ktime_get_ts);
+EXPORT_SYMBOL_GPL(ktime_get_ts64);
/**
@@ -473,9 +472,9 @@ EXPORT_SYMBOL(getnstime_raw_and_real);
*/
void do_gettimeofday(struct timeval *tv)
{
- struct timespec now;
+ struct timespec64 now;
- getnstimeofday(&now);
+ getnstimeofday64(&now);
tv->tv_sec = now.tv_sec;
tv->tv_usec = now.tv_nsec/1000;
}
@@ -680,11 +679,11 @@ int timekeeping_notify(struct clocksource *clock)
*/
ktime_t ktime_get_real(void)
{
- struct timespec now;
+ struct timespec64 now;
- getnstimeofday(&now);
+ getnstimeofday64(&now);
- return timespec_to_ktime(now);
+ return timespec64_to_ktime(now);
}
EXPORT_SYMBOL_GPL(ktime_get_real);
@@ -1689,7 +1688,6 @@ int do_adjtimex(struct timex *txc)
struct timekeeper *tk = &timekeeper;
unsigned long flags;
struct timespec64 ts;
- struct timespec tmp;
s32 orig_tai, tai;
int ret;
@@ -1709,8 +1707,7 @@ int do_adjtimex(struct timex *txc)
return ret;
}
- getnstimeofday(&tmp);
- ts = timespec_to_timespec64(tmp);
+ getnstimeofday64(&ts);
raw_spin_lock_irqsave(&timekeeper_lock, flags);
write_seqcount_begin(&timekeeper_seq);
--
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