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authorMartin Schwidefsky <[email protected]>2009-08-14 15:47:31 +0200
committerThomas Gleixner <[email protected]>2009-08-15 10:55:46 +0200
commitd4f587c67fc39e0030ddd718675e252e208da4d7 (patch)
tree2222681c57966cc6b8404afdff3ab1a09ac7ea69 /include/linux
parent75c5158f70c065b9704b924503d96e8297838f79 (diff)
timekeeping: Increase granularity of read_persistent_clock()
The persistent clock of some architectures (e.g. s390) have a better granularity than seconds. To reduce the delta between the host clock and the guest clock in a virtualized system change the read_persistent_clock function to return a struct timespec. Signed-off-by: Martin Schwidefsky <[email protected]> Cc: Ingo Molnar <[email protected]> Acked-by: John Stultz <[email protected]> Cc: Daniel Walker <[email protected]> LKML-Reference: <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/time.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/time.h b/include/linux/time.h
index e7c844558884..53a3216f0d1b 100644
--- a/include/linux/time.h
+++ b/include/linux/time.h
@@ -101,7 +101,7 @@ extern struct timespec xtime;
extern struct timespec wall_to_monotonic;
extern seqlock_t xtime_lock;
-extern unsigned long read_persistent_clock(void);
+extern void read_persistent_clock(struct timespec *ts);
extern int update_persistent_clock(struct timespec now);
extern int no_sync_cmos_clock __read_mostly;
void timekeeping_init(void);