diff options
| author | Torben Hohn <torbenh@gmx.de> | 2011-01-27 15:59:10 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2011-01-31 14:55:43 +0100 |
| commit | f0af911a9dec9de702645182c8d269449e24d24b (patch) | |
| tree | 17cd5683ab3878479b59d9786102fcf699d3051a | |
| parent | 79ecaf0d15344d78904becf0f25de3fc9b49d430 (diff) | |
time: Provide xtime_update()
xtime_update() takes xtime_lock write locked and calls
do_timer(). Provided to replace the do_timer() calls in the
architecture code.
Signed-off-by: Torben Hohn <torbenh@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: johnstul@us.ibm.com
Cc: yong.zhang0@gmail.com
Cc: hch@infradead.org
LKML-Reference: <20110127145910.23248.21379.stgit@localhost>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| -rw-r--r-- | include/linux/sched.h | 1 | ||||
| -rw-r--r-- | kernel/time/timekeeping.c | 13 |
2 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index d747f948b34..9d9a0787eed 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -2050,6 +2050,7 @@ extern void release_uids(struct user_namespace *ns); #include <asm/current.h> extern void do_timer(unsigned long ticks); +extern void xtime_update(unsigned long ticks); extern int wake_up_state(struct task_struct *tsk, unsigned int state); extern int wake_up_process(struct task_struct *tsk); diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index 8da35d1b9e1..02c13a313d1 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -969,3 +969,16 @@ void get_xtime_and_monotonic_offset(struct timespec *xtim, struct timespec *wtom *wtom = wall_to_monotonic; } while (read_seqretry(&xtime_lock, seq)); } + +/** + * xtime_update() - advances the timekeeping infrastructure + * @ticks: number of ticks, that have elapsed since the last call. + * + * Must be called with interrupts disabled. + */ +void xtime_update(unsigned long ticks) +{ + write_seqlock(&xtime_lock); + do_timer(ticks); + write_sequnlock(&xtime_lock); +} |