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Commit d4c04536 authored by Ian Campbell's avatar Ian Campbell Committed by Jeremy Fitzhardinge
Browse files

xen: add irq_from_evtchn 



Given an evtchn, return the corresponding irq.

Signed-off-by: default avatarIan Campbell <ian.campbell@citrix.com>
Signed-off-by: default avatarJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
parent 6d02c426

drivers/xen/events.c

+6 −0
Original line number Diff line number Diff line
@@ -151,6 +151,12 @@ static unsigned int evtchn_from_irq(unsigned irq) 
	return info_for_irq(irq)->evtchn;

}



unsigned irq_from_evtchn(unsigned int evtchn)

{

	return evtchn_to_irq[evtchn];

}

EXPORT_SYMBOL_GPL(irq_from_evtchn);



static enum ipi_vector ipi_from_irq(unsigned irq)

{

	struct irq_info *info = info_for_irq(irq);

include/xen/events.h

+3 −0
Original line number Diff line number Diff line
@@ -53,4 +53,7 @@ bool xen_test_irq_pending(int irq); 
   irq will be disabled so it won't deliver an interrupt. */

void xen_poll_irq(int irq);



/* Determine the IRQ which is bound to an event channel */

unsigned irq_from_evtchn(unsigned int evtchn);



#endif	/* _XEN_EVENTS_H */