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Merge branch 'x86/paravirt-spinlocks' into x86/for-linus

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Ingo Molnar
2008-07-21 16:45:56 +02:00
parent acee709cab 1c29dd9a9e
commit 2e2dcc7631
9 changed files with 379 additions and 17 deletions
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27
drivers/xen/events.c
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@@ -734,6 +734,33 @@ static void restore_cpu_ipis(unsigned int cpu)
}
}
/* Clear an irq's pending state, in preparation for polling on it */
void xen_clear_irq_pending(int irq)
{
int evtchn = evtchn_from_irq(irq);
if (VALID_EVTCHN(evtchn))
clear_evtchn(evtchn);
}
/* Poll waiting for an irq to become pending. In the usual case, the
irq will be disabled so it won't deliver an interrupt. */
void xen_poll_irq(int irq)
{
evtchn_port_t evtchn = evtchn_from_irq(irq);
if (VALID_EVTCHN(evtchn)) {
struct sched_poll poll;
poll.nr_ports = 1;
poll.timeout = 0;
poll.ports = &evtchn;
if (HYPERVISOR_sched_op(SCHEDOP_poll, &poll) != 0)
BUG();
}
}
void xen_irq_resume(void)
{
unsigned int cpu, irq, evtchn;