xen: Use evtchn_type_t as a type for event channels

Make event channel functions pass event channel port using evtchn_port_t type. It eliminates signed <-> unsigned conversion. Signed-off-by: Yan Yankovskyi <[email protected]> Reviewed-by: Boris Ostrovsky <[email protected]> Link: https://lore.kernel.org/r/20200323152343.GA28422@kbp1-lhp-F74019 Signed-off-by: Juergen Gross <[email protected]>
berg · Apr 7, 2020 · 0102e4e · 0102e4e
1 parent c3881eb
commit 0102e4e
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Showing 15 changed files with 128 additions and 116 deletions.
diff --git a/drivers/xen/events/events_2l.c b/drivers/xen/events/events_2l.c
@@ -53,37 +53,37 @@ static void evtchn_2l_bind_to_cpu(struct irq_info *info, unsigned cpu)
 	set_bit(info->evtchn, BM(per_cpu(cpu_evtchn_mask, cpu)));
 }
 
-static void evtchn_2l_clear_pending(unsigned port)
+static void evtchn_2l_clear_pending(evtchn_port_t port)
 {
 	struct shared_info *s = HYPERVISOR_shared_info;
 	sync_clear_bit(port, BM(&s->evtchn_pending[0]));
 }
 
-static void evtchn_2l_set_pending(unsigned port)
+static void evtchn_2l_set_pending(evtchn_port_t port)
 {
 	struct shared_info *s = HYPERVISOR_shared_info;
 	sync_set_bit(port, BM(&s->evtchn_pending[0]));
 }
 
-static bool evtchn_2l_is_pending(unsigned port)
+static bool evtchn_2l_is_pending(evtchn_port_t port)
 {
 	struct shared_info *s = HYPERVISOR_shared_info;
 	return sync_test_bit(port, BM(&s->evtchn_pending[0]));
 }
 
-static bool evtchn_2l_test_and_set_mask(unsigned port)
+static bool evtchn_2l_test_and_set_mask(evtchn_port_t port)
 {
 	struct shared_info *s = HYPERVISOR_shared_info;
 	return sync_test_and_set_bit(port, BM(&s->evtchn_mask[0]));
 }
 
-static void evtchn_2l_mask(unsigned port)
+static void evtchn_2l_mask(evtchn_port_t port)
 {
 	struct shared_info *s = HYPERVISOR_shared_info;
 	sync_set_bit(port, BM(&s->evtchn_mask[0]));
 }
 
-static void evtchn_2l_unmask(unsigned port)
+static void evtchn_2l_unmask(evtchn_port_t port)
 {
 	struct shared_info *s = HYPERVISOR_shared_info;
 	unsigned int cpu = get_cpu();
@@ -173,7 +173,7 @@ static void evtchn_2l_handle_events(unsigned cpu)
 	/* Timer interrupt has highest priority. */
 	irq = irq_from_virq(cpu, VIRQ_TIMER);
 	if (irq != -1) {
-		unsigned int evtchn = evtchn_from_irq(irq);
+		evtchn_port_t evtchn = evtchn_from_irq(irq);
 		word_idx = evtchn / BITS_PER_LONG;
 		bit_idx = evtchn % BITS_PER_LONG;
 		if (active_evtchns(cpu, s, word_idx) & (1ULL << bit_idx))
@@ -228,7 +228,7 @@ static void evtchn_2l_handle_events(unsigned cpu)
 
 		do {
 			xen_ulong_t bits;
-			int port;
+			evtchn_port_t port;
 
 			bits = MASK_LSBS(pending_bits, bit_idx);