*/
bool napi_schedule_prep(struct napi_struct *n)
{
- unsigned long val, new;
+ unsigned long new, val = READ_ONCE(n->state);
do {
- val = READ_ONCE(n->state);
if (unlikely(val & NAPIF_STATE_DISABLE))
return false;
new = val | NAPIF_STATE_SCHED;
*/
new |= (val & NAPIF_STATE_SCHED) / NAPIF_STATE_SCHED *
NAPIF_STATE_MISSED;
- } while (cmpxchg(&n->state, val, new) != val);
+ } while (!try_cmpxchg(&n->state, &val, new));
return !(val & NAPIF_STATE_SCHED);
}
local_irq_restore(flags);
}
+ val = READ_ONCE(n->state);
do {
- val = READ_ONCE(n->state);
-
WARN_ON_ONCE(!(val & NAPIF_STATE_SCHED));
new = val & ~(NAPIF_STATE_MISSED | NAPIF_STATE_SCHED |
*/
new |= (val & NAPIF_STATE_MISSED) / NAPIF_STATE_MISSED *
NAPIF_STATE_SCHED;
- } while (cmpxchg(&n->state, val, new) != val);
+ } while (!try_cmpxchg(&n->state, &val, new));
if (unlikely(val & NAPIF_STATE_MISSED)) {
__napi_schedule(n);