diff options
Diffstat (limited to 'sys/kern/kern_intr.c')
| -rw-r--r-- | sys/kern/kern_intr.c | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/sys/kern/kern_intr.c b/sys/kern/kern_intr.c index 8d63c9b..63d8469 100644 --- a/sys/kern/kern_intr.c +++ b/sys/kern/kern_intr.c @@ -841,7 +841,7 @@ ok: * again and remove this handler if it has already passed * it on the list. */ - ie->ie_thread->it_need = 1; + atomic_store_rel_int(&ie->ie_thread->it_need, 1); } else TAILQ_REMOVE(&ie->ie_handlers, handler, ih_next); thread_unlock(ie->ie_thread->it_thread); @@ -912,7 +912,7 @@ intr_event_schedule_thread(struct intr_event *ie) * running. Then, lock the thread and see if we actually need to * put it on the runqueue. */ - it->it_need = 1; + atomic_store_rel_int(&it->it_need, 1); thread_lock(td); if (TD_AWAITING_INTR(td)) { CTR3(KTR_INTR, "%s: schedule pid %d (%s)", __func__, p->p_pid, @@ -990,7 +990,7 @@ ok: * again and remove this handler if it has already passed * it on the list. */ - it->it_need = 1; + atomic_store_rel_int(&it->it_need, 1); } else TAILQ_REMOVE(&ie->ie_handlers, handler, ih_next); thread_unlock(it->it_thread); @@ -1066,7 +1066,7 @@ intr_event_schedule_thread(struct intr_event *ie, struct intr_thread *it) * running. Then, lock the thread and see if we actually need to * put it on the runqueue. */ - it->it_need = 1; + atomic_store_rel_int(&it->it_need, 1); thread_lock(td); if (TD_AWAITING_INTR(td)) { CTR3(KTR_INTR, "%s: schedule pid %d (%s)", __func__, p->p_pid, @@ -1247,7 +1247,7 @@ intr_event_execute_handlers(struct proc *p, struct intr_event *ie) * interrupt threads always invoke all of their handlers. */ if (ie->ie_flags & IE_SOFT) { - if (!ih->ih_need) + if (atomic_load_acq_int(&ih->ih_need) == 0) continue; else atomic_store_rel_int(&ih->ih_need, 0); @@ -1349,7 +1349,7 @@ ithread_loop(void *arg) * we are running, it will set it_need to note that we * should make another pass. */ - while (ithd->it_need) { + while (atomic_load_acq_int(&ithd->it_need) != 0) { /* * This might need a full read and write barrier * to make sure that this write posts before any @@ -1368,7 +1368,8 @@ ithread_loop(void *arg) * set again, so we have to check it again. */ thread_lock(td); - if (!ithd->it_need && !(ithd->it_flags & (IT_DEAD | IT_WAIT))) { + if ((atomic_load_acq_int(&ithd->it_need) == 0) && + !(ithd->it_flags & (IT_DEAD | IT_WAIT))) { TD_SET_IWAIT(td); ie->ie_count = 0; mi_switch(SW_VOL | SWT_IWAIT, NULL); @@ -1529,7 +1530,7 @@ ithread_loop(void *arg) * we are running, it will set it_need to note that we * should make another pass. */ - while (ithd->it_need) { + while (atomic_load_acq_int(&ithd->it_need) != 0) { /* * This might need a full read and write barrier * to make sure that this write posts before any @@ -1551,7 +1552,8 @@ ithread_loop(void *arg) * set again, so we have to check it again. */ thread_lock(td); - if (!ithd->it_need && !(ithd->it_flags & (IT_DEAD | IT_WAIT))) { + if ((atomic_load_acq_int(&ithd->it_need) == 0) && + !(ithd->it_flags & (IT_DEAD | IT_WAIT))) { TD_SET_IWAIT(td); ie->ie_count = 0; mi_switch(SW_VOL | SWT_IWAIT, NULL); |
