[Xen-devel] [PATCH v2 1/7] timekeeping: introduce __current_kernel_time64

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

__current_kernel_time64 returns a struct timespec64, without taking the
xtime lock. Mirrors __current_kernel_time/current_kernel_time.

Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
CC: arnd@xxxxxxxx
CC: john.stultz@xxxxxxxxxx
CC: tglx@xxxxxxxxxxxxx
CC: mingo@xxxxxxxxxx
CC: peterz@xxxxxxxxxxxxx
---
 include/linux/timekeeping.h |    3 ++-
 kernel/time/timekeeping.c   |    7 +++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h
index ec89d84..b5802bf 100644
--- a/include/linux/timekeeping.h
+++ b/include/linux/timekeeping.h
@@ -19,7 +19,8 @@ extern int do_sys_settimeofday(const struct timespec *tv,
  */
 unsigned long get_seconds(void);
 struct timespec64 current_kernel_time64(void);
-/* does not take xtime_lock */
+/* do not take xtime_lock */
+struct timespec64 __current_kernel_time64(void);
 struct timespec __current_kernel_time(void);
 
 static inline struct timespec current_kernel_time(void)
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index b1356b7..c1221c2 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -1881,6 +1881,13 @@ struct timespec __current_kernel_time(void)
        return timespec64_to_timespec(tk_xtime(tk));
 }
 
+struct timespec64 __current_kernel_time64(void)
+{
+       struct timekeeper *tk = &tk_core.timekeeper;
+
+       return tk_xtime(tk);
+}
+
 struct timespec64 current_kernel_time64(void)
 {
        struct timekeeper *tk = &tk_core.timekeeper;
-- 
1.7.10.4


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