From d4c045364d3107603187f21a56ec231e74d26441 Mon Sep 17 00:00:00 2001 From: Ian Campbell Date: Fri, 6 Feb 2009 19:20:31 -0800 Subject: xen: add irq_from_evtchn Given an evtchn, return the corresponding irq. Signed-off-by: Ian Campbell Signed-off-by: Jeremy Fitzhardinge --- drivers/xen/events.c | 6 ++++++ include/xen/events.h | 3 +++ 2 files changed, 9 insertions(+) diff --git a/drivers/xen/events.c b/drivers/xen/events.c index 30963af5dba..1cd2a0e15ae 100644 --- a/drivers/xen/events.c +++ b/drivers/xen/events.c @@ -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); diff --git a/include/xen/events.h b/include/xen/events.h index 0d5f1adc036..e68d59a90ca 100644 --- a/include/xen/events.h +++ b/include/xen/events.h @@ -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 */ -- cgit v1.2.3