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Commit 3588fe2e authored by Jeremy Fitzhardinge's avatar Jeremy Fitzhardinge
Browse files

xen/events: change to using fasteoi 



Change event delivery to:
 - mask+clear event in the upcall function
 - use handle_fasteoi_irq as the handler
 - unmask in the eoi function (and handle migration)

Signed-off-by: default avatarJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
parent 1e17fc7e

drivers/xen/events.c

+7 −4
Original line number Diff line number Diff line
@@ -378,7 +378,7 @@ int bind_evtchn_to_irq(unsigned int evtchn) 
		irq = find_unbound_irq();



		set_irq_chip_and_handler_name(irq, &xen_dynamic_chip,

					      handle_edge_irq, "event");

					      handle_fasteoi_irq, "event");



		evtchn_to_irq[evtchn] = irq;

		irq_info[irq] = mk_evtchn_info(evtchn);
@@ -664,6 +664,9 @@ static void __xen_evtchn_do_upcall(void) 
				int irq = evtchn_to_irq[port];

				struct irq_desc *desc;



				mask_evtchn(port);

				clear_evtchn(port);



				if (irq != -1) {

					desc = irq_to_desc(irq);

					if (desc)
@@ -801,10 +804,10 @@ static void ack_dynirq(unsigned int irq) 
{

	int evtchn = evtchn_from_irq(irq);



	move_native_irq(irq);

	move_masked_irq(irq);



	if (VALID_EVTCHN(evtchn))

		clear_evtchn(evtchn);

		unmask_evtchn(evtchn);

}



static int retrigger_dynirq(unsigned int irq)
@@ -960,7 +963,7 @@ static struct irq_chip xen_dynamic_chip __read_mostly = { 
	.mask		= disable_dynirq,

	.unmask		= enable_dynirq,



	.ack		= ack_dynirq,

	.eoi		= ack_dynirq,

	.set_affinity	= set_affinity_irq,

	.retrigger	= retrigger_dynirq,

};