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time: Extend get_xtime_and_monotonic_offset() to also return sleep 

Extend get_xtime_and_monotonic_offset to
get_xtime_and_monotonic_and_sleep_offset().

CC: Jamie Lokier <jamie@shareable.org>
CC: Thomas Gleixner <tglx@linutronix.de>
CC: Alexander Shishkin <virtuoso@slind.org>
CC: Arve Hjønnevåg <arve@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
This commit is contained in:
John Stultz 2011-02-14 18:43:08 -08:00
parent abb3a4ea2e
commit 314ac37150
3 changed files with 13 additions and 7 deletions
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3
include/linux/time.h
View File

@ -124,7 +124,8 @@ unsigned long get_seconds(void);
struct timespec current_kernel_time(void);
struct timespec __current_kernel_time(void); /* does not take xtime_lock */
struct timespec get_monotonic_coarse(void);
void get_xtime_and_monotonic_offset(struct timespec *xtim, struct timespec *wtom);
void get_xtime_and_monotonic_and_sleep_offset(struct timespec *xtim,
struct timespec *wtom, struct timespec *sleep);
#define CURRENT_TIME (current_kernel_time())
#define CURRENT_TIME_SEC ((struct timespec) { get_seconds(), 0 })

9
kernel/hrtimer.c
View File

@ -91,9 +91,9 @@ static inline int hrtimer_clockid_to_base(clockid_t clock_id)
static void hrtimer_get_softirq_time(struct hrtimer_cpu_base *base)
{
ktime_t xtim, tomono;
struct timespec xts, tom;
struct timespec xts, tom, slp;
get_xtime_and_monotonic_offset(&xts, &tom);
get_xtime_and_monotonic_and_sleep_offset(&xts, &tom, &slp);
xtim = timespec_to_ktime(xts);
tomono = timespec_to_ktime(tom);
@ -614,12 +614,13 @@ static int hrtimer_reprogram(struct hrtimer *timer,
static void retrigger_next_event(void *arg)
{
struct hrtimer_cpu_base *base;
struct timespec realtime_offset, wtm;
struct timespec realtime_offset, wtm, sleep;
if (!hrtimer_hres_active())
return;
get_xtime_and_monotonic_offset(&realtime_offset, &wtm);
get_xtime_and_monotonic_and_sleep_offset(&realtime_offset, &wtm,
&sleep);
set_normalized_timespec(&realtime_offset, -wtm.tv_sec, -wtm.tv_nsec);
base = &__get_cpu_var(hrtimer_bases);

8
kernel/time/timekeeping.c
View File

@ -1040,11 +1040,14 @@ void do_timer(unsigned long ticks)
}
/**
* get_xtime_and_monotonic_offset() - get xtime and wall_to_monotonic
* get_xtime_and_monotonic_and_sleep_offset() - get xtime, wall_to_monotonic,
* and sleep offsets.
* @xtim: pointer to timespec to be set with xtime
* @wtom: pointer to timespec to be set with wall_to_monotonic
* @sleep: pointer to timespec to be set with time in suspend
*/
void get_xtime_and_monotonic_offset(struct timespec *xtim, struct timespec *wtom)
void get_xtime_and_monotonic_and_sleep_offset(struct timespec *xtim,
struct timespec *wtom, struct timespec *sleep)
{
unsigned long seq;
@ -1052,6 +1055,7 @@ void get_xtime_and_monotonic_offset(struct timespec *xtim, struct timespec *wtom
seq = read_seqbegin(&xtime_lock);
*xtim = xtime;
*wtom = wall_to_monotonic;
*sleep = total_sleep_time;
} while (read_seqretry(&xtime_lock, seq));
}