/* afs_osi_TimedSleep
*
* Arguments:
* event - event to sleep on
* ams --- max sleep time in milliseconds
* aintok - 1 if should sleep interruptibly
*
* Returns 0 if timeout, EINTR if signalled, and EGAIN if it might
* have raced.
*/
int
afs_osi_TimedSleep(void *event, afs_int32 ams, int aintok)
{
int code = 0;
long ticks = (ams * HZ / 1000) + 1;
struct afs_event *evp;
int seq;
evp = afs_getevent(event);
if (!evp) {
afs_addevent(event);
evp = afs_getevent(event);
}
seq = evp->seq;
AFS_GUNLOCK();
code = wait_event_freezable_timeout(evp->cond, evp->seq != seq, ticks);
AFS_GLOCK();
if (code == -ERESTARTSYS)
code = EINTR;
else
code = -code;
relevent(evp);
return code;
}
/* afs_osi_SleepSig
*
* Waits for an event to be notified, returning early if a signal
* is received. Returns EINTR if signaled, and 0 otherwise.
*/
int
afs_osi_SleepSig(void *event)
{
struct afs_event *evp;
int seq, retval;
int code;
evp = afs_getevent(event);
if (!evp) {
afs_addevent(event);
evp = afs_getevent(event);
}
seq = evp->seq;
retval = 0;
AFS_GUNLOCK();
code = wait_event_freezable(evp->cond, seq != evp->seq);
AFS_GLOCK();
if (code == -ERESTARTSYS)
code = EINTR;
else
code = -code;
relevent(evp);
return code;
}
/* afs_osi_TimedSleep
*
* Arguments:
* event - event to sleep on
* ams --- max sleep time in milliseconds
* aintok - 1 if should sleep interruptibly
*
* Returns 0 if timeout, EINTR if signalled, and EGAIN if it might
* have raced.
*/
int
afs_osi_TimedSleep(void *event, afs_int32 ams, int aintok)
{
int code = 0;
long ticks = (ams * HZ / 1000) + 1;
struct afs_event *evp;
#ifdef DECLARE_WAITQUEUE
DECLARE_WAITQUEUE(wait, current);
#else
struct wait_queue wait = { current, NULL };
#endif
evp = afs_getevent(event);
if (!evp) {
afs_addevent(event);
evp = afs_getevent(event);
}
add_wait_queue(&evp->cond, &wait);
set_current_state(TASK_INTERRUPTIBLE);
/* always sleep TASK_INTERRUPTIBLE to keep load average
* from artifically increasing. */
AFS_GUNLOCK();
if (aintok) {
if (schedule_timeout(ticks))
code = EINTR;
} else
schedule_timeout(ticks);
#ifdef CONFIG_PM
if (
#ifdef PF_FREEZE
current->flags & PF_FREEZE
#else
#if defined(STRUCT_TASK_STRUCT_HAS_TODO)
!current->todo
#else
#if defined(STRUCT_TASK_STRUCT_HAS_THREAD_INFO)
test_ti_thread_flag(current->thread_info, TIF_FREEZE)
#else
test_ti_thread_flag(task_thread_info(current), TIF_FREEZE)
#endif
#endif
#endif
)
#ifdef LINUX_REFRIGERATOR_TAKES_PF_FREEZE
refrigerator(PF_FREEZE);
#else
refrigerator();
#endif
#endif
AFS_GLOCK();
remove_wait_queue(&evp->cond, &wait);
set_current_state(TASK_RUNNING);
relevent(evp);
return code;
}
/* afs_osi_SleepSig
*
* Waits for an event to be notified, returning early if a signal
* is received. Returns EINTR if signaled, and 0 otherwise.
*/
int
afs_osi_SleepSig(void *event)
{
struct afs_event *evp;
int seq, retval;
#ifdef DECLARE_WAITQUEUE
DECLARE_WAITQUEUE(wait, current);
#else
struct wait_queue wait = { current, NULL };
#endif
evp = afs_getevent(event);
if (!evp) {
afs_addevent(event);
evp = afs_getevent(event);
}
seq = evp->seq;
retval = 0;
add_wait_queue(&evp->cond, &wait);
while (seq == evp->seq) {
set_current_state(TASK_INTERRUPTIBLE);
AFS_ASSERT_GLOCK();
AFS_GUNLOCK();
schedule();
#ifdef CONFIG_PM
if (
#ifdef PF_FREEZE
current->flags & PF_FREEZE
#else
#if defined(STRUCT_TASK_STRUCT_HAS_TODO)
!current->todo
#else
#if defined(STRUCT_TASK_STRUCT_HAS_THREAD_INFO)
test_ti_thread_flag(current->thread_info, TIF_FREEZE)
#else
test_ti_thread_flag(task_thread_info(current), TIF_FREEZE)
#endif
#endif
#endif
)
#ifdef LINUX_REFRIGERATOR_TAKES_PF_FREEZE
refrigerator(PF_FREEZE);
#else
refrigerator();
#endif
#endif
AFS_GLOCK();
if (signal_pending(current)) {
retval = EINTR;
break;
}
}
remove_wait_queue(&evp->cond, &wait);
set_current_state(TASK_RUNNING);
relevent(evp);
return retval;
}
/* afs_osi_SleepSig
*
* Waits for an event to be notified, returning early if a signal
* is received. Returns EINTR if signaled, and 0 otherwise.
*/
int
afs_osi_SleepSig(void *event)
{
struct afs_event *evp;
int seq, retval;
#ifdef DECLARE_WAITQUEUE
DECLARE_WAITQUEUE(wait, current);
#else
struct wait_queue wait = { current, NULL };
#endif
evp = afs_getevent(event);
if (!evp) {
afs_addevent(event);
evp = afs_getevent(event);
}
seq = evp->seq;
retval = 0;
add_wait_queue(&evp->cond, &wait);
while (seq == evp->seq) {
set_current_state(TASK_INTERRUPTIBLE);
AFS_ASSERT_GLOCK();
AFS_GUNLOCK();
schedule();
try_to_freeze();
AFS_GLOCK();
if (signal_pending(current)) {
retval = EINTR;
break;
}
}
remove_wait_queue(&evp->cond, &wait);
set_current_state(TASK_RUNNING);
relevent(evp);
return retval;
}
/* afs_osi_TimedSleep
*
* Arguments:
* event - event to sleep on
* ams --- max sleep time in milliseconds
* aintok - 1 if should sleep interruptibly
*
* Returns 0 if timeout, EINTR if signalled, and EGAIN if it might
* have raced.
*/
int
afs_osi_TimedSleep(void *event, afs_int32 ams, int aintok)
{
int code = 0;
long ticks = (ams * HZ / 1000) + 1;
struct afs_event *evp;
#ifdef DECLARE_WAITQUEUE
DECLARE_WAITQUEUE(wait, current);
#else
struct wait_queue wait = { current, NULL };
#endif
evp = afs_getevent(event);
if (!evp) {
afs_addevent(event);
evp = afs_getevent(event);
}
add_wait_queue(&evp->cond, &wait);
set_current_state(TASK_INTERRUPTIBLE);
/* always sleep TASK_INTERRUPTIBLE to keep load average
* from artifically increasing. */
AFS_GUNLOCK();
if (schedule_timeout(ticks)) {
if (aintok)
code = EINTR;
}
try_to_freeze();
AFS_GLOCK();
remove_wait_queue(&evp->cond, &wait);
set_current_state(TASK_RUNNING);
relevent(evp);
return code;
}
