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authorThomas Gleixner <tglx@linutronix.de>2013-02-22 02:51:38 +0400
committerJohn Stultz <john.stultz@linaro.org>2013-04-05 00:18:31 +0400
commit14a3b6abe98c8f53a13522610c257accef7321df (patch)
treea14383c4c852d5d2268607443a61bfa437cd9bfd /include/linux/timekeeper_internal.h
parenta076b2146fabb0894cae5e0189a8ba3f1502d737 (diff)
downloadlinux-14a3b6abe98c8f53a13522610c257accef7321df.tar.xz
timekeeping: Store cycle_last value in timekeeper struct as well
For implementing a shadow timekeeper and a split calculation/update region we need to store the cycle_last value in the timekeeper and update the value in the clocksource struct only in the update region. Add the extra storage to the timekeeper. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: John Stultz <john.stultz@linaro.org>
Diffstat (limited to 'include/linux/timekeeper_internal.h')
-rw-r--r--include/linux/timekeeper_internal.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/timekeeper_internal.h b/include/linux/timekeeper_internal.h
index a151bd70e52b..c1825eb436ed 100644
--- a/include/linux/timekeeper_internal.h
+++ b/include/linux/timekeeper_internal.h
@@ -20,6 +20,8 @@ struct timekeeper {
u32 shift;
/* Number of clock cycles in one NTP interval. */
cycle_t cycle_interval;
+ /* Last cycle value (also stored in clock->cycle_last) */
+ cycle_t cycle_last;
/* Number of clock shifted nano seconds in one NTP interval. */
u64 xtime_interval;
/* shifted nano seconds left over when rounding cycle_interval */