Messages in this thread Patch in this message | | | Subject | [PATCH 08 of 24] Re: [PATCH 08/12] xen: add resend_irq_on_evtchn() definition into events.c | Date | Wed, 02 Apr 2008 10:53:57 -0700 | From | Jeremy Fitzhardinge <> |
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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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