[PATCH 05/11] time/posix-timers:Convert to the 64bit methods for k_clock callback functions

Baolin Wang
2015-04-20T05:57:33Z

This patch converts the timepsec type to timespec64 type, and converts the
itimerspec type to itimerspec64 type for the k_clock callback functions.

This patch also converts the timespec type to timespec64 type for timekeeping_clocktai()
function which is used only in the posix-timers.c file.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
---
include/linux/timekeeping.h | 4 +-
kernel/time/posix-timers.c | 102 +++++++++++++++++++++++--------------------
kernel/time/timekeeping.h | 2 +-
3 files changed, 57 insertions(+), 51 deletions(-)

diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h
index c6d5ae9..bd3df93 100644
--- a/include/linux/timekeeping.h
+++ b/include/linux/timekeeping.h
@@ -242,9 +242,9 @@ static inline void get_monotonic_boottime64(struct timespec64 *ts)
*ts = ktime_to_timespec64(ktime_get_boottime());
}

-static inline void timekeeping_clocktai(struct timespec *ts)
+static inline void timekeeping_clocktai(struct timespec64 *ts)
{
- *ts = ktime_to_timespec(ktime_get_clocktai());
+ *ts = ktime_to_timespec64(ktime_get_clocktai());
}

/*
diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c
index 9070387..47d1abf 100644
--- a/kernel/time/posix-timers.c
+++ b/kernel/time/posix-timers.c
@@ -132,9 +132,9 @@ static struct k_clock posix_clocks[MAX_CLOCKS];
static int common_nsleep(const clockid_t, int flags, struct timespec *t,
struct timespec __user *rmtp);
static int common_timer_create(struct k_itimer *new_timer);
-static void common_timer_get(struct k_itimer *, struct itimerspec *);
+static void common_timer_get(struct k_itimer *, struct itimerspec64 *);
static int common_timer_set(struct k_itimer *, int,
- struct itimerspec *, struct itimerspec *);
+ struct itimerspec64 *, struct itimerspec64 *);
static int common_timer_del(struct k_itimer *timer);

static enum hrtimer_restart posix_timer_fn(struct hrtimer *data);
@@ -203,17 +203,20 @@ static inline void unlock_timer(struct k_itimer *timr, unsigned long flags)
}

/* Get clock_realtime */
-static int posix_clock_realtime_get(clockid_t which_clock, struct timespec *tp)
+static int posix_clock_realtime_get(clockid_t which_clock,
+ struct timespec64 *tp)
{
- ktime_get_real_ts(tp);
+ ktime_get_real_ts64(tp);
return 0;
}

/* Set clock_realtime */
static int posix_clock_realtime_set(const clockid_t which_clock,
- const struct timespec *tp)
+ const struct timespec64 *tp)
{
- return do_sys_settimeofday(tp, NULL);
+ struct timespec ts = timespec64_to_timespec(*tp);
+
+ return do_sys_settimeofday(&ts, NULL);
}

static int posix_clock_realtime_adj(const clockid_t which_clock,
@@ -225,48 +228,51 @@ static int posix_clock_realtime_adj(const clockid_t which_clock,
/*
* Get monotonic time for posix timers
*/
-static int posix_ktime_get_ts(clockid_t which_clock, struct timespec *tp)
+static int posix_ktime_get_ts(clockid_t which_clock, struct timespec64 *tp)
{
- ktime_get_ts(tp);
+ ktime_get_ts64(tp);
return 0;
}

/*
* Get monotonic-raw time for posix timers
*/
-static int posix_get_monotonic_raw(clockid_t which_clock, struct timespec *tp)
+static int posix_get_monotonic_raw(clockid_t which_clock, struct timespec64 *tp)
{
- getrawmonotonic(tp);
+ getrawmonotonic64(tp);
return 0;
}

-static int posix_get_realtime_coarse(clockid_t which_clock, struct timespec *tp)
+static int posix_get_realtime_coarse(clockid_t which_clock,
+ struct timespec64 *tp)
{
- *tp = current_kernel_time();
+ *tp = current_kernel_time64();
return 0;
}

static int posix_get_monotonic_coarse(clockid_t which_clock,
- struct timespec *tp)
+ struct timespec64 *tp)
{
- *tp = get_monotonic_coarse();
+ *tp = get_monotonic_coarse64();
return 0;
}

-static int posix_get_coarse_res(const clockid_t which_clock, struct timespec *tp)
+static int posix_get_coarse_res(const clockid_t which_clock,
+ struct timespec64 *tp)
{
- *tp = ktime_to_timespec(KTIME_LOW_RES);
+ *tp = ktime_to_timespec64(KTIME_LOW_RES);
return 0;
}

-static int posix_get_boottime(const clockid_t which_clock, struct timespec *tp)
+static int posix_get_boottime(const clockid_t which_clock,
+ struct timespec64 *tp)
{
- get_monotonic_boottime(tp);
+ get_monotonic_boottime64(tp);
return 0;
}

-static int posix_get_tai(clockid_t which_clock, struct timespec *tp)
+static int posix_get_tai(clockid_t which_clock, struct timespec64 *tp)
{
timekeeping_clocktai(tp);
return 0;
@@ -278,57 +284,57 @@ static int posix_get_tai(clockid_t which_clock, struct timespec *tp)
static __init int init_posix_timers(void)
{
struct k_clock clock_realtime = {
- .clock_getres = hrtimer_get_res,
- .clock_get = posix_clock_realtime_get,
- .clock_set = posix_clock_realtime_set,
+ .clock_getres64 = hrtimer_get_res64,
+ .clock_get64 = posix_clock_realtime_get,
+ .clock_set64 = posix_clock_realtime_set,
.clock_adj = posix_clock_realtime_adj,
.nsleep = common_nsleep,
.nsleep_restart = hrtimer_nanosleep_restart,
.timer_create = common_timer_create,
- .timer_set = common_timer_set,
- .timer_get = common_timer_get,
+ .timer_set64 = common_timer_set,
+ .timer_get64 = common_timer_get,
.timer_del = common_timer_del,
};
struct k_clock clock_monotonic = {
- .clock_getres = hrtimer_get_res,
- .clock_get = posix_ktime_get_ts,
+ .clock_getres64 = hrtimer_get_res64,
+ .clock_get64 = posix_ktime_get_ts,
.nsleep = common_nsleep,
.nsleep_restart = hrtimer_nanosleep_restart,
.timer_create = common_timer_create,
- .timer_set = common_timer_set,
- .timer_get = common_timer_get,
+ .timer_set64 = common_timer_set,
+ .timer_get64 = common_timer_get,
.timer_del = common_timer_del,
};
struct k_clock clock_monotonic_raw = {
- .clock_getres = hrtimer_get_res,
- .clock_get = posix_get_monotonic_raw,
+ .clock_getres64 = hrtimer_get_res64,
+ .clock_get64 = posix_get_monotonic_raw,
};
struct k_clock clock_realtime_coarse = {
- .clock_getres = posix_get_coarse_res,
- .clock_get = posix_get_realtime_coarse,
+ .clock_getres64 = posix_get_coarse_res,
+ .clock_get64 = posix_get_realtime_coarse,
};
struct k_clock clock_monotonic_coarse = {
- .clock_getres = posix_get_coarse_res,
- .clock_get = posix_get_monotonic_coarse,
+ .clock_getres64 = posix_get_coarse_res,
+ .clock_get64 = posix_get_monotonic_coarse,
};
struct k_clock clock_tai = {
- .clock_getres = hrtimer_get_res,
- .clock_get = posix_get_tai,
+ .clock_getres64 = hrtimer_get_res64,
+ .clock_get64 = posix_get_tai,
.nsleep = common_nsleep,
.nsleep_restart = hrtimer_nanosleep_restart,
.timer_create = common_timer_create,
- .timer_set = common_timer_set,
- .timer_get = common_timer_get,
+ .timer_set64 = common_timer_set,
+ .timer_get64 = common_timer_get,
.timer_del = common_timer_del,
};
struct k_clock clock_boottime = {
- .clock_getres = hrtimer_get_res,
- .clock_get = posix_get_boottime,
+ .clock_getres64 = hrtimer_get_res64,
+ .clock_get64 = posix_get_boottime,
.nsleep = common_nsleep,
.nsleep_restart = hrtimer_nanosleep_restart,
.timer_create = common_timer_create,
- .timer_set = common_timer_set,
- .timer_get = common_timer_get,
+ .timer_set64 = common_timer_set,
+ .timer_get64 = common_timer_get,
.timer_del = common_timer_del,
};

@@ -726,7 +732,7 @@ static struct k_itimer *__lock_timer(timer_t timer_id, unsigned long *flags)
* report.
*/
static void
-common_timer_get(struct k_itimer *timr, struct itimerspec *cur_setting)
+common_timer_get(struct k_itimer *timr, struct itimerspec64 *cur_setting)
{
ktime_t now, remaining, iv;
struct hrtimer *timer = &timr->it.real.timer;
@@ -737,7 +743,7 @@ common_timer_get(struct k_itimer *timr, struct itimerspec *cur_setting)

/* interval timer ? */
if (iv.tv64)
- cur_setting->it_interval = ktime_to_timespec(iv);
+ cur_setting->it_interval = ktime_to_timespec64(iv);
else if (!hrtimer_active(timer) &&
(timr->it_sigev_notify & ~SIGEV_THREAD_ID) != SIGEV_NONE)
return;
@@ -763,7 +769,7 @@ common_timer_get(struct k_itimer *timr, struct itimerspec *cur_setting)
if ((timr->it_sigev_notify & ~SIGEV_THREAD_ID) != SIGEV_NONE)
cur_setting->it_value.tv_nsec = 1;
} else
- cur_setting->it_value = ktime_to_timespec(remaining);
+ cur_setting->it_value = ktime_to_timespec64(remaining);
}

/* Get the time remaining on a POSIX.1b interval timer. */
@@ -830,7 +836,7 @@ SYSCALL_DEFINE1(timer_getoverrun, timer_t, timer_id)
/* timr->it_lock is taken. */
static int
common_timer_set(struct k_itimer *timr, int flags,
- struct itimerspec *new_setting, struct itimerspec *old_setting)
+ struct itimerspec64 *new_setting, struct itimerspec64 *old_setting)
{
struct hrtimer *timer = &timr->it.real.timer;
enum hrtimer_mode mode;
@@ -859,10 +865,10 @@ common_timer_set(struct k_itimer *timr, int flags,
hrtimer_init(&timr->it.real.timer, timr->it_clock, mode);
timr->it.real.timer.function = posix_timer_fn;

- hrtimer_set_expires(timer, timespec_to_ktime(new_setting->it_value));
+ hrtimer_set_expires(timer, timespec64_to_ktime(new_setting->it_value));

/* Convert interval */
- timr->it.real.interval = timespec_to_ktime(new_setting->it_interval);
+ timr->it.real.interval = timespec64_to_ktime(new_setting->it_interval);

/* SIGEV_NONE timers are not queued ! See common_timer_get */
if (((timr->it_sigev_notify & ~SIGEV_THREAD_ID) == SIGEV_NONE)) {
diff --git a/kernel/time/timekeeping.h b/kernel/time/timekeeping.h
index 1d91416..144af14 100644
--- a/kernel/time/timekeeping.h
+++ b/kernel/time/timekeeping.h
@@ -15,7 +15,7 @@ extern u64 timekeeping_max_deferment(void);
extern int timekeeping_inject_offset(struct timespec *ts);
extern s32 timekeeping_get_tai_offset(void);
extern void timekeeping_set_tai_offset(s32 tai_offset);
-extern void timekeeping_clocktai(struct timespec *ts);
+extern void timekeeping_clocktai(struct timespec64 *ts);
extern int timekeeping_suspend(void);
extern void timekeeping_resume(void);

--
1.7.9.5