Commit-ID: 06aa376903b6e8c8741395a4702d78d47c7c27c6
Gitweb: https://git.kernel.org/tip/06aa376903b6e8c8741395a4702d78d47c7c27c6
Author: Arnd Bergmann <arnd@xxxxxxxx>
AuthorDate: Fri, 27 Apr 2018 15:40:16 +0200
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Sat, 19 May 2018 13:57:33 +0200
timekeeping: Add more coarse clocktai/boottime interfaces
The set of APIs we provide has a few holes for coarse times, e.g. we
provide ktime_get_coarse_boottime() and ktime_get_boottime_ts64(),
but not the combination of the two.
This adds four new functions:
ktime_get_coarse_boottime_ts64()
ktime_get_boottime_seconds()
ktime_get_coarse_clocktai_ts64()
ktime_get_clocktai_seconds()
to fill in some of the missing pieces. I have missed only the
ktime_get_boottime_seconds() accessor in a few occasions in
the past, but it seems better to just provide all four together,
as there is very little cost to having them.
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Stephen Boyd <sboyd@xxxxxxxxxx>
Cc: y2038@xxxxxxxxxxxxxxxx
Cc: John Stultz <john.stultz@xxxxxxxxxx>
Link: https://lkml.kernel.org/r/20180427134016.2525989-6-arnd@xxxxxxxx
---
include/linux/timekeeping.h | 24 +++++++++++++++++++++++-
1 file changed, 23 insertions(+), 1 deletion(-)
diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h
index 42f71f4b658a..86bc2026efce 100644
--- a/include/linux/timekeeping.h
+++ b/include/linux/timekeeping.h
@@ -137,18 +137,40 @@ extern u64 ktime_get_boot_fast_ns(void);
extern u64 ktime_get_real_fast_ns(void);
/*
- * timespec64 interfaces utilizing the ktime based ones
+ * timespec64/time64_t interfaces utilizing the ktime based ones
+ * for API completeness, these could be implemented more efficiently
+ * if needed.
*/
static inline void ktime_get_boottime_ts64(struct timespec64 *ts)
{
*ts = ktime_to_timespec64(ktime_get_boottime());
}
+static inline void ktime_get_coarse_boottime_ts64(struct timespec64 *ts)
+{
+ *ts = ktime_to_timespec64(ktime_get_coarse_boottime());
+}
+
+static inline time64_t ktime_get_boottime_seconds(void)
+{
+ return ktime_divns(ktime_get_coarse_boottime(), NSEC_PER_SEC);
+}
+
static inline void ktime_get_clocktai_ts64(struct timespec64 *ts)
{
*ts = ktime_to_timespec64(ktime_get_clocktai());
}
+static inline void ktime_get_coarse_clocktai_ts64(struct timespec64 *ts)
+{
+ *ts = ktime_to_timespec64(ktime_get_coarse_clocktai());
+}
+
+static inline time64_t ktime_get_clocktai_seconds(void)
+{
+ return ktime_divns(ktime_get_coarse_clocktai(), NSEC_PER_SEC);
+}
+
/*
* RTC specific
*/
--
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