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| author | Isaku Yamahata <yamahata@valinux.co.jp> | 2008-04-02 10:53:57 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-04-24 23:57:32 +0200 |
| commit | 642e0c882cd5369429c833d97e4804c8be473e8a (patch) | |
| tree | c9032832801bd68379b30983ce61fd80f823adb0 | |
| parent | e849c3e9e0b786619c451d89ef0c47ac9a28fbc1 (diff) | |
| download | linux-642e0c882cd5369429c833d97e4804c8be473e8a.tar.bz2 | |
xen: add resend_irq_on_evtchn() definition into events.c
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>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| -rw-r--r-- | drivers/xen/events.c | 16 | ||||
| -rw-r--r-- | include/xen/events.h | 1 |
2 files changed, 17 insertions, 0 deletions
diff --git a/drivers/xen/events.c b/drivers/xen/events.c index 2396b4492f70..4f0f22b020ea 100644 --- a/drivers/xen/events.c +++ b/drivers/xen/events.c @@ -586,6 +586,22 @@ static void set_affinity_irq(unsigned irq, cpumask_t dest) 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 index d99a3e0df880..acd8e062c85f 100644 --- a/include/xen/events.h +++ b/include/xen/events.h @@ -31,6 +31,7 @@ int bind_ipi_to_irqhandler(enum ipi_vector ipi, 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) { |