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-rw-r--r--include/trace/events/timer.h16
-rw-r--r--kernel/time/itimer.c158
2 files changed, 104 insertions, 70 deletions
diff --git a/include/trace/events/timer.h b/include/trace/events/timer.h
index b7a904825e7d..5998789ed91f 100644
--- a/include/trace/events/timer.h
+++ b/include/trace/events/timer.h
@@ -303,7 +303,7 @@ DEFINE_EVENT(hrtimer_class, hrtimer_cancel,
*/
TRACE_EVENT(itimer_state,
- TP_PROTO(int which, const struct itimerval *const value,
+ TP_PROTO(int which, const struct itimerspec64 *const value,
unsigned long long expires),
TP_ARGS(which, value, expires),
@@ -312,24 +312,24 @@ TRACE_EVENT(itimer_state,
__field( int, which )
__field( unsigned long long, expires )
__field( long, value_sec )
- __field( long, value_usec )
+ __field( long, value_nsec )
__field( long, interval_sec )
- __field( long, interval_usec )
+ __field( long, interval_nsec )
),
TP_fast_assign(
__entry->which = which;
__entry->expires = expires;
__entry->value_sec = value->it_value.tv_sec;
- __entry->value_usec = value->it_value.tv_usec;
+ __entry->value_nsec = value->it_value.tv_nsec;
__entry->interval_sec = value->it_interval.tv_sec;
- __entry->interval_usec = value->it_interval.tv_usec;
+ __entry->interval_nsec = value->it_interval.tv_nsec;
),
- TP_printk("which=%d expires=%llu it_value=%ld.%ld it_interval=%ld.%ld",
+ TP_printk("which=%d expires=%llu it_value=%ld.%06ld it_interval=%ld.%06ld",
__entry->which, __entry->expires,
- __entry->value_sec, __entry->value_usec,
- __entry->interval_sec, __entry->interval_usec)
+ __entry->value_sec, __entry->value_nsec / NSEC_PER_USEC,
+ __entry->interval_sec, __entry->interval_nsec / NSEC_PER_USEC)
);
/**
diff --git a/kernel/time/itimer.c b/kernel/time/itimer.c
index ce9cd19ce72e..5872db9bd5f7 100644
--- a/kernel/time/itimer.c
+++ b/kernel/time/itimer.c
@@ -26,7 +26,7 @@
* Returns the delta between the expiry time and now, which can be
* less than zero or 1usec for an pending expired timer
*/
-static struct timeval itimer_get_remtime(struct hrtimer *timer)
+static struct timespec64 itimer_get_remtime(struct hrtimer *timer)
{
ktime_t rem = __hrtimer_get_remaining(timer, true);
@@ -41,11 +41,11 @@ static struct timeval itimer_get_remtime(struct hrtimer *timer)
} else
rem = 0;
- return ktime_to_timeval(rem);
+ return ktime_to_timespec64(rem);
}
static void get_cpu_itimer(struct task_struct *tsk, unsigned int clock_id,
- struct itimerval *const value)
+ struct itimerspec64 *const value)
{
u64 val, interval;
struct cpu_itimer *it = &tsk->signal->it[clock_id];
@@ -69,11 +69,11 @@ static void get_cpu_itimer(struct task_struct *tsk, unsigned int clock_id,
spin_unlock_irq(&tsk->sighand->siglock);
- value->it_value = ns_to_timeval(val);
- value->it_interval = ns_to_timeval(interval);
+ value->it_value = ns_to_timespec64(val);
+ value->it_interval = ns_to_timespec64(interval);
}
-static int do_getitimer(int which, struct itimerval *value)
+static int do_getitimer(int which, struct itimerspec64 *value)
{
struct task_struct *tsk = current;
@@ -82,7 +82,7 @@ static int do_getitimer(int which, struct itimerval *value)
spin_lock_irq(&tsk->sighand->siglock);
value->it_value = itimer_get_remtime(&tsk->signal->real_timer);
value->it_interval =
- ktime_to_timeval(tsk->signal->it_real_incr);
+ ktime_to_timespec64(tsk->signal->it_real_incr);
spin_unlock_irq(&tsk->sighand->siglock);
break;
case ITIMER_VIRTUAL:
@@ -97,17 +97,26 @@ static int do_getitimer(int which, struct itimerval *value)
return 0;
}
+static int put_itimerval(struct itimerval __user *o,
+ const struct itimerspec64 *i)
+{
+ struct itimerval v;
+
+ v.it_interval.tv_sec = i->it_interval.tv_sec;
+ v.it_interval.tv_usec = i->it_interval.tv_nsec / NSEC_PER_USEC;
+ v.it_value.tv_sec = i->it_value.tv_sec;
+ v.it_value.tv_usec = i->it_value.tv_nsec / NSEC_PER_USEC;
+ return copy_to_user(o, &v, sizeof(struct itimerval)) ? -EFAULT : 0;
+}
+
+
SYSCALL_DEFINE2(getitimer, int, which, struct itimerval __user *, value)
{
- int error = -EFAULT;
- struct itimerval get_buffer;
+ struct itimerspec64 get_buffer;
+ int error = do_getitimer(which, &get_buffer);
- if (value) {
- error = do_getitimer(which, &get_buffer);
- if (!error &&
- copy_to_user(value, &get_buffer, sizeof(get_buffer)))
- error = -EFAULT;
- }
+ if (!error && put_itimerval(value, &get_buffer))
+ error = -EFAULT;
return error;
}
@@ -117,24 +126,25 @@ struct old_itimerval32 {
struct old_timeval32 it_value;
};
-static int put_old_itimerval32(struct old_itimerval32 __user *o, const struct itimerval *i)
+static int put_old_itimerval32(struct old_itimerval32 __user *o,
+ const struct itimerspec64 *i)
{
struct old_itimerval32 v32;
v32.it_interval.tv_sec = i->it_interval.tv_sec;
- v32.it_interval.tv_usec = i->it_interval.tv_usec;
+ v32.it_interval.tv_usec = i->it_interval.tv_nsec / NSEC_PER_USEC;
v32.it_value.tv_sec = i->it_value.tv_sec;
- v32.it_value.tv_usec = i->it_value.tv_usec;
+ v32.it_value.tv_usec = i->it_value.tv_nsec / NSEC_PER_USEC;
return copy_to_user(o, &v32, sizeof(struct old_itimerval32)) ? -EFAULT : 0;
}
COMPAT_SYSCALL_DEFINE2(getitimer, int, which,
- struct old_itimerval32 __user *, it)
+ struct old_itimerval32 __user *, value)
{
- struct itimerval kit;
- int error = do_getitimer(which, &kit);
+ struct itimerspec64 get_buffer;
+ int error = do_getitimer(which, &get_buffer);
- if (!error && put_old_itimerval32(it, &kit))
+ if (!error && put_old_itimerval32(value, &get_buffer))
error = -EFAULT;
return error;
}
@@ -156,8 +166,8 @@ enum hrtimer_restart it_real_fn(struct hrtimer *timer)
}
static void set_cpu_itimer(struct task_struct *tsk, unsigned int clock_id,
- const struct itimerval *const value,
- struct itimerval *const ovalue)
+ const struct itimerspec64 *const value,
+ struct itimerspec64 *const ovalue)
{
u64 oval, nval, ointerval, ninterval;
struct cpu_itimer *it = &tsk->signal->it[clock_id];
@@ -166,8 +176,8 @@ static void set_cpu_itimer(struct task_struct *tsk, unsigned int clock_id,
* Use the to_ktime conversion because that clamps the maximum
* value to KTIME_MAX and avoid multiplication overflows.
*/
- nval = ktime_to_ns(timeval_to_ktime(value->it_value));
- ninterval = ktime_to_ns(timeval_to_ktime(value->it_interval));
+ nval = timespec64_to_ns(&value->it_value);
+ ninterval = timespec64_to_ns(&value->it_interval);
spin_lock_irq(&tsk->sighand->siglock);
@@ -186,8 +196,8 @@ static void set_cpu_itimer(struct task_struct *tsk, unsigned int clock_id,
spin_unlock_irq(&tsk->sighand->siglock);
if (ovalue) {
- ovalue->it_value = ns_to_timeval(oval);
- ovalue->it_interval = ns_to_timeval(ointerval);
+ ovalue->it_value = ns_to_timespec64(oval);
+ ovalue->it_interval = ns_to_timespec64(ointerval);
}
}
@@ -197,19 +207,13 @@ static void set_cpu_itimer(struct task_struct *tsk, unsigned int clock_id,
#define timeval_valid(t) \
(((t)->tv_sec >= 0) && (((unsigned long) (t)->tv_usec) < USEC_PER_SEC))
-static int do_setitimer(int which, struct itimerval *value, struct itimerval *ovalue)
+static int do_setitimer(int which, struct itimerspec64 *value,
+ struct itimerspec64 *ovalue)
{
struct task_struct *tsk = current;
struct hrtimer *timer;
ktime_t expires;
- /*
- * Validate the timevals in value.
- */
- if (!timeval_valid(&value->it_value) ||
- !timeval_valid(&value->it_interval))
- return -EINVAL;
-
switch (which) {
case ITIMER_REAL:
again:
@@ -218,7 +222,7 @@ again:
if (ovalue) {
ovalue->it_value = itimer_get_remtime(timer);
ovalue->it_interval
- = ktime_to_timeval(tsk->signal->it_real_incr);
+ = ktime_to_timespec64(tsk->signal->it_real_incr);
}
/* We are sharing ->siglock with it_real_fn() */
if (hrtimer_try_to_cancel(timer) < 0) {
@@ -226,10 +230,10 @@ again:
hrtimer_cancel_wait_running(timer);
goto again;
}
- expires = timeval_to_ktime(value->it_value);
+ expires = timespec64_to_ktime(value->it_value);
if (expires != 0) {
tsk->signal->it_real_incr =
- timeval_to_ktime(value->it_interval);
+ timespec64_to_ktime(value->it_interval);
hrtimer_start(timer, expires, HRTIMER_MODE_REL);
} else
tsk->signal->it_real_incr = 0;
@@ -252,7 +256,7 @@ again:
#ifdef CONFIG_SECURITY_SELINUX
void clear_itimer(void)
{
- struct itimerval v = {};
+ struct itimerspec64 v = {};
int i;
for (i = 0; i < 3; i++)
@@ -276,15 +280,15 @@ void clear_itimer(void)
*/
static unsigned int alarm_setitimer(unsigned int seconds)
{
- struct itimerval it_new, it_old;
+ struct itimerspec64 it_new, it_old;
#if BITS_PER_LONG < 64
if (seconds > INT_MAX)
seconds = INT_MAX;
#endif
it_new.it_value.tv_sec = seconds;
- it_new.it_value.tv_usec = 0;
- it_new.it_interval.tv_sec = it_new.it_interval.tv_usec = 0;
+ it_new.it_value.tv_nsec = 0;
+ it_new.it_interval.tv_sec = it_new.it_interval.tv_nsec = 0;
do_setitimer(ITIMER_REAL, &it_new, &it_old);
@@ -292,8 +296,8 @@ static unsigned int alarm_setitimer(unsigned int seconds)
* We can't return 0 if we have an alarm pending ... And we'd
* better return too much than too little anyway
*/
- if ((!it_old.it_value.tv_sec && it_old.it_value.tv_usec) ||
- it_old.it_value.tv_usec >= 500000)
+ if ((!it_old.it_value.tv_sec && it_old.it_value.tv_nsec) ||
+ it_old.it_value.tv_nsec >= 500000)
it_old.it_value.tv_sec++;
return it_old.it_value.tv_sec;
@@ -310,15 +314,35 @@ SYSCALL_DEFINE1(alarm, unsigned int, seconds)
#endif
+static int get_itimerval(struct itimerspec64 *o, const struct itimerval __user *i)
+{
+ struct itimerval v;
+
+ if (copy_from_user(&v, i, sizeof(struct itimerval)))
+ return -EFAULT;
+
+ /* Validate the timevals in value. */
+ if (!timeval_valid(&v.it_value) ||
+ !timeval_valid(&v.it_interval))
+ return -EINVAL;
+
+ o->it_interval.tv_sec = v.it_interval.tv_sec;
+ o->it_interval.tv_nsec = v.it_interval.tv_usec * NSEC_PER_USEC;
+ o->it_value.tv_sec = v.it_value.tv_sec;
+ o->it_value.tv_nsec = v.it_value.tv_usec * NSEC_PER_USEC;
+ return 0;
+}
+
SYSCALL_DEFINE3(setitimer, int, which, struct itimerval __user *, value,
struct itimerval __user *, ovalue)
{
- struct itimerval set_buffer, get_buffer;
+ struct itimerspec64 set_buffer, get_buffer;
int error;
if (value) {
- if(copy_from_user(&set_buffer, value, sizeof(set_buffer)))
- return -EFAULT;
+ error = get_itimerval(&set_buffer, value);
+ if (error)
+ return error;
} else {
memset(&set_buffer, 0, sizeof(set_buffer));
printk_once(KERN_WARNING "%s calls setitimer() with new_value NULL pointer."
@@ -330,43 +354,53 @@ SYSCALL_DEFINE3(setitimer, int, which, struct itimerval __user *, value,
if (error || !ovalue)
return error;
- if (copy_to_user(ovalue, &get_buffer, sizeof(get_buffer)))
+ if (put_itimerval(ovalue, &get_buffer))
return -EFAULT;
return 0;
}
#if defined(CONFIG_COMPAT) || defined(CONFIG_ALPHA)
-static int get_old_itimerval32(struct itimerval *o, const struct old_itimerval32 __user *i)
+static int get_old_itimerval32(struct itimerspec64 *o, const struct old_itimerval32 __user *i)
{
struct old_itimerval32 v32;
if (copy_from_user(&v32, i, sizeof(struct old_itimerval32)))
return -EFAULT;
+
+ /* Validate the timevals in value. */
+ if (!timeval_valid(&v32.it_value) ||
+ !timeval_valid(&v32.it_interval))
+ return -EINVAL;
+
o->it_interval.tv_sec = v32.it_interval.tv_sec;
- o->it_interval.tv_usec = v32.it_interval.tv_usec;
+ o->it_interval.tv_nsec = v32.it_interval.tv_usec * NSEC_PER_USEC;
o->it_value.tv_sec = v32.it_value.tv_sec;
- o->it_value.tv_usec = v32.it_value.tv_usec;
+ o->it_value.tv_nsec = v32.it_value.tv_usec * NSEC_PER_USEC;
return 0;
}
COMPAT_SYSCALL_DEFINE3(setitimer, int, which,
- struct old_itimerval32 __user *, in,
- struct old_itimerval32 __user *, out)
+ struct old_itimerval32 __user *, value,
+ struct old_itimerval32 __user *, ovalue)
{
- struct itimerval kin, kout;
+ struct itimerspec64 set_buffer, get_buffer;
int error;
- if (in) {
- if (get_old_itimerval32(&kin, in))
- return -EFAULT;
+ if (value) {
+ error = get_old_itimerval32(&set_buffer, value);
+ if (error)
+ return error;
} else {
- memset(&kin, 0, sizeof(kin));
+ memset(&set_buffer, 0, sizeof(set_buffer));
+ printk_once(KERN_WARNING "%s calls setitimer() with new_value NULL pointer."
+ " Misfeature support will be removed\n",
+ current->comm);
}
- error = do_setitimer(which, &kin, out ? &kout : NULL);
- if (error || !out)
+ error = do_setitimer(which, &set_buffer, ovalue ? &get_buffer : NULL);
+ if (error || !ovalue)
return error;
- if (put_old_itimerval32(out, &kout))
+ if (put_old_itimerval32(ovalue, &get_buffer))
return -EFAULT;
return 0;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-16 14:18:30 +0000