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Subject[PATCH 08 of 24] Re: [PATCH 08/12] xen: add resend_irq_on_evtchn() definition into events.c
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From: Isaku Yamahata <yamahata@valinux.co.jp>

Define resend_irq_on_evtchn() which ia64/xen uses.
Although it isn't used by current x86/xen code, it's arch generic
so that put it into common code.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
---
drivers/xen/events.c | 16 ++++++++++++++++
include/xen/events.h | 3 +--
2 files changed, 17 insertions(+), 2 deletions(-)
diff --git a/drivers/xen/events.c b/drivers/xen/events.c
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -586,6 +586,22 @@
rebind_irq_to_cpu(irq, tcpu);
}

+int resend_irq_on_evtchn(unsigned int irq)
+{
+ int masked, evtchn = evtchn_from_irq(irq);
+ struct shared_info *s = HYPERVISOR_shared_info;
+
+ if (!VALID_EVTCHN(evtchn))
+ return 1;
+
+ masked = sync_test_and_set_bit(evtchn, s->evtchn_mask);
+ sync_set_bit(evtchn, s->evtchn_pending);
+ if (!masked)
+ unmask_evtchn(evtchn);
+
+ return 1;
+}
+
static void enable_dynirq(unsigned int irq)
{
int evtchn = evtchn_from_irq(irq);
diff --git a/include/xen/events.h b/include/xen/events.h
--- a/include/xen/events.h
+++ b/include/xen/events.h
@@ -31,6 +31,7 @@
void unbind_from_irqhandler(unsigned int irq, void *dev_id);

void xen_send_IPI_one(unsigned int cpu, enum ipi_vector vector);
+int resend_irq_on_evtchn(unsigned int irq);

static inline void notify_remote_via_evtchn(int port)
{



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