[PATCH 08/11] time/posix-clock:Convert to the 64bit methods for k_clock and posix_clock_operations structure

Baolin Wang
2015-04-20T05:57:36Z

This patch converts the posix clock operations over to the new methods with
timespec64/itimerspec64 type to making them ready for 2038, and it is based on
the ptp patch series.

And also changes to the 64bit methods for k_clock structure, that
converts the timespec/itimerspec type to timespec64/itimerspec64 type.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
---
drivers/ptp/ptp_clock.c | 26 ++++++++------------------
include/linux/posix-clock.h | 10 +++++-----
kernel/time/posix-clock.c | 20 ++++++++++----------
3 files changed, 23 insertions(+), 33 deletions(-)

diff --git a/drivers/ptp/ptp_clock.c b/drivers/ptp/ptp_clock.c
index bee8270..8c086e7 100644
--- a/drivers/ptp/ptp_clock.c
+++ b/drivers/ptp/ptp_clock.c
@@ -97,32 +97,24 @@ static s32 scaled_ppm_to_ppb(long ppm)

/* posix clock implementation */

-static int ptp_clock_getres(struct posix_clock *pc, struct timespec *tp)
+static int ptp_clock_getres(struct posix_clock *pc, struct timespec64 *tp)
{
tp->tv_sec = 0;
tp->tv_nsec = 1;
return 0;
}

-static int ptp_clock_settime(struct posix_clock *pc, const struct timespec *tp)
+static int ptp_clock_settime(struct posix_clock *pc,
+ const struct timespec64 *tp)
{
struct ptp_clock *ptp = container_of(pc, struct ptp_clock, clock);
- struct timespec64 ts = timespec_to_timespec64(*tp);
-
- return ptp->info->settime64(ptp->info, &ts);
+ return ptp->info->settime64(ptp->info, tp);
}

-static int ptp_clock_gettime(struct posix_clock *pc, struct timespec *tp)
+static int ptp_clock_gettime(struct posix_clock *pc, struct timespec64 *tp)
{
struct ptp_clock *ptp = container_of(pc, struct ptp_clock, clock);
- struct timespec64 ts;
- int err;
-
- err = ptp->info->gettime64(ptp->info, &ts);
- if (!err)
- *tp = timespec64_to_timespec(ts);
-
- return err;
+ return ptp->info->gettime64(ptp->info, tp);
}

static int ptp_clock_adjtime(struct posix_clock *pc, struct timex *tx)
@@ -134,8 +126,7 @@ static int ptp_clock_adjtime(struct posix_clock *pc, struct timex *tx)
ops = ptp->info;

if (tx->modes & ADJ_SETOFFSET) {
- struct timespec ts;
- ktime_t kt;
+ struct timespec64 ts;
s64 delta;

ts.tv_sec = tx->time.tv_sec;
@@ -147,8 +138,7 @@ static int ptp_clock_adjtime(struct posix_clock *pc, struct timex *tx)
if ((unsigned long) ts.tv_nsec >= NSEC_PER_SEC)
return -EINVAL;

- kt = timespec_to_ktime(ts);
- delta = ktime_to_ns(kt);
+ delta = timespec64_to_ns(&ts);
err = ops->adjtime(ops, delta);
} else if (tx->modes & ADJ_FREQUENCY) {
s32 ppb = scaled_ppm_to_ppb(tx->freq);
diff --git a/include/linux/posix-clock.h b/include/linux/posix-clock.h
index 34c4498..fd7e22c 100644
--- a/include/linux/posix-clock.h
+++ b/include/linux/posix-clock.h
@@ -59,23 +59,23 @@ struct posix_clock_operations {

int (*clock_adjtime)(struct posix_clock *pc, struct timex *tx);

- int (*clock_gettime)(struct posix_clock *pc, struct timespec *ts);
+ int (*clock_gettime)(struct posix_clock *pc, struct timespec64 *ts);

- int (*clock_getres) (struct posix_clock *pc, struct timespec *ts);
+ int (*clock_getres)(struct posix_clock *pc, struct timespec64 *ts);

int (*clock_settime)(struct posix_clock *pc,
- const struct timespec *ts);
+ const struct timespec64 *ts);

int (*timer_create) (struct posix_clock *pc, struct k_itimer *kit);

int (*timer_delete) (struct posix_clock *pc, struct k_itimer *kit);

void (*timer_gettime)(struct posix_clock *pc,
- struct k_itimer *kit, struct itimerspec *tsp);
+ struct k_itimer *kit, struct itimerspec64 *tsp);

int (*timer_settime)(struct posix_clock *pc,
struct k_itimer *kit, int flags,
- struct itimerspec *tsp, struct itimerspec *old);
+ struct itimerspec64 *tsp, struct itimerspec64 *old);
/*
* Optional character device methods:
*/
diff --git a/kernel/time/posix-clock.c b/kernel/time/posix-clock.c
index ce033c7..e21e4c1 100644
--- a/kernel/time/posix-clock.c
+++ b/kernel/time/posix-clock.c
@@ -297,7 +297,7 @@ out:
return err;
}

-static int pc_clock_gettime(clockid_t id, struct timespec *ts)
+static int pc_clock_gettime(clockid_t id, struct timespec64 *ts)
{
struct posix_clock_desc cd;
int err;
@@ -316,7 +316,7 @@ static int pc_clock_gettime(clockid_t id, struct timespec *ts)
return err;
}

-static int pc_clock_getres(clockid_t id, struct timespec *ts)
+static int pc_clock_getres(clockid_t id, struct timespec64 *ts)
{
struct posix_clock_desc cd;
int err;
@@ -335,7 +335,7 @@ static int pc_clock_getres(clockid_t id, struct timespec *ts)
return err;
}

-static int pc_clock_settime(clockid_t id, const struct timespec *ts)
+static int pc_clock_settime(clockid_t id, const struct timespec64 *ts)
{
struct posix_clock_desc cd;
int err;
@@ -399,7 +399,7 @@ static int pc_timer_delete(struct k_itimer *kit)
return err;
}

-static void pc_timer_gettime(struct k_itimer *kit, struct itimerspec *ts)
+static void pc_timer_gettime(struct k_itimer *kit, struct itimerspec64 *ts)
{
clockid_t id = kit->it_clock;
struct posix_clock_desc cd;
@@ -414,7 +414,7 @@ static void pc_timer_gettime(struct k_itimer *kit, struct itimerspec *ts)
}

static int pc_timer_settime(struct k_itimer *kit, int flags,
- struct itimerspec *ts, struct itimerspec *old)
+ struct itimerspec64 *ts, struct itimerspec64 *old)
{
clockid_t id = kit->it_clock;
struct posix_clock_desc cd;
@@ -435,12 +435,12 @@ static int pc_timer_settime(struct k_itimer *kit, int flags,
}

struct k_clock clock_posix_dynamic = {
- .clock_getres = pc_clock_getres,
- .clock_set = pc_clock_settime,
- .clock_get = pc_clock_gettime,
+ .clock_getres64 = pc_clock_getres,
+ .clock_set64 = pc_clock_settime,
+ .clock_get64 = pc_clock_gettime,
.clock_adj = pc_clock_adjtime,
.timer_create = pc_timer_create,
- .timer_set = pc_timer_settime,
+ .timer_set64 = pc_timer_settime,
.timer_del = pc_timer_delete,
- .timer_get = pc_timer_gettime,
+ .timer_get64 = pc_timer_gettime,
};
--
1.7.9.5