From cc244ddae6d4c6902ac9d7d64023534f8c44a7eb Mon Sep 17 00:00:00 2001 From: John Stultz Date: Thu, 3 May 2012 12:30:07 -0700 Subject: timekeeping: Move TAI managment into timekeeping core from ntp Currently NTP manages the TAI offset. Since there's plans for a CLOCK_TAI clockid, push the TAI management into the timekeeping core. CC: Thomas Gleixner CC: Eric Dumazet CC: Richard Cochran Signed-off-by: John Stultz --- include/linux/timekeeper_internal.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux/timekeeper_internal.h') diff --git a/include/linux/timekeeper_internal.h b/include/linux/timekeeper_internal.h index e1d558e237ec..ff94f436f8b7 100644 --- a/include/linux/timekeeper_internal.h +++ b/include/linux/timekeeper_internal.h @@ -62,6 +62,9 @@ struct timekeeper { ktime_t offs_boot; /* The raw monotonic time for the CLOCK_MONOTONIC_RAW posix clock. */ struct timespec raw_time; + /* The current UTC to TAI offset in seconds */ + s32 tai_offset; + /* Seqlock for all timekeeper values */ seqlock_t lock; }; -- cgit v1.2.2 From 90adda98b89aaf68b06014ecf805b6c477daa19b Mon Sep 17 00:00:00 2001 From: John Stultz Date: Mon, 21 Jan 2013 17:00:11 -0800 Subject: hrtimer: Add hrtimer support for CLOCK_TAI Add hrtimer support for CLOCK_TAI, as well as posix timer interfaces. Signed-off-by: John Stultz --- include/linux/timekeeper_internal.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux/timekeeper_internal.h') diff --git a/include/linux/timekeeper_internal.h b/include/linux/timekeeper_internal.h index ff94f436f8b7..26700d870506 100644 --- a/include/linux/timekeeper_internal.h +++ b/include/linux/timekeeper_internal.h @@ -64,6 +64,8 @@ struct timekeeper { struct timespec raw_time; /* The current UTC to TAI offset in seconds */ s32 tai_offset; + /* Offset clock monotonic -> clock tai */ + ktime_t offs_tai; /* Seqlock for all timekeeper values */ seqlock_t lock; -- cgit v1.2.2 From 7e40672d930b369c1984457233ec5557aa53bfb8 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Thu, 21 Feb 2013 22:51:37 +0000 Subject: timekeeping: Move lock out of timekeeper struct Make the lock a separate entity. Preparatory patch for shadow timekeeper structure. Signed-off-by: Thomas Gleixner [Merged with CLOCK_TAI changes] Signed-off-by: John Stultz --- include/linux/timekeeper_internal.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux/timekeeper_internal.h') diff --git a/include/linux/timekeeper_internal.h b/include/linux/timekeeper_internal.h index 26700d870506..a151bd70e52b 100644 --- a/include/linux/timekeeper_internal.h +++ b/include/linux/timekeeper_internal.h @@ -67,8 +67,6 @@ struct timekeeper { /* Offset clock monotonic -> clock tai */ ktime_t offs_tai; - /* Seqlock for all timekeeper values */ - seqlock_t lock; }; static inline struct timespec tk_xtime(struct timekeeper *tk) -- cgit v1.2.2 From 14a3b6abe98c8f53a13522610c257accef7321df Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Thu, 21 Feb 2013 22:51:38 +0000 Subject: 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 Signed-off-by: John Stultz --- include/linux/timekeeper_internal.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux/timekeeper_internal.h') 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 */ -- cgit v1.2.2