}
}
-static bool evtchn_fifo_is_linked(unsigned port)
-{
- event_word_t *word = event_word_from_port(port);
- return sync_test_bit(EVTCHN_FIFO_BIT(LINKED, word), BM(word));
-}
-
static uint32_t clear_linked(volatile event_word_t *word)
{
event_word_t new, old, w;
static void consume_one_event(unsigned cpu,
struct evtchn_fifo_control_block *control_block,
- unsigned priority, unsigned long *ready,
- bool drop)
+ unsigned priority, unsigned long *ready)
{
struct evtchn_fifo_queue *q = &per_cpu(cpu_queue, cpu);
uint32_t head;
if (head == 0)
clear_bit(priority, ready);
- if (evtchn_fifo_is_pending(port) && !evtchn_fifo_is_masked(port)) {
- if (likely(!drop))
- handle_irq_for_port(port);
- }
+ if (evtchn_fifo_is_pending(port) && !evtchn_fifo_is_masked(port))
+ handle_irq_for_port(port);
q->head[priority] = head;
}
-static void __evtchn_fifo_handle_events(unsigned cpu, bool drop)
+static void evtchn_fifo_handle_events(unsigned cpu)
{
struct evtchn_fifo_control_block *control_block;
unsigned long ready;
while (ready) {
q = find_first_bit(&ready, EVTCHN_FIFO_MAX_QUEUES);
- consume_one_event(cpu, control_block, q, &ready, drop);
+ consume_one_event(cpu, control_block, q, &ready);
ready |= xchg(&control_block->ready, 0);
}
}
-static void evtchn_fifo_handle_events(unsigned cpu)
-{
- __evtchn_fifo_handle_events(cpu, false);
-}
-
static void evtchn_fifo_resume(void)
{
unsigned cpu;
event_array_pages = 0;
}
-static void evtchn_fifo_close(unsigned port, unsigned int cpu)
-{
- if (cpu == NR_CPUS)
- return;
-
- get_online_cpus();
- if (cpu_online(cpu)) {
- if (WARN_ON(irqs_disabled()))
- goto out;
-
- while (evtchn_fifo_is_linked(port))
- cpu_relax();
- } else {
- __evtchn_fifo_handle_events(cpu, true);
- }
-
-out:
- put_online_cpus();
-}
-
static const struct evtchn_ops evtchn_ops_fifo = {
.max_channels = evtchn_fifo_max_channels,
.nr_channels = evtchn_fifo_nr_channels,
.unmask = evtchn_fifo_unmask,
.handle_events = evtchn_fifo_handle_events,
.resume = evtchn_fifo_resume,
- .close = evtchn_fifo_close,
};
static int evtchn_fifo_alloc_control_block(unsigned cpu)