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authorLinus Torvalds <torvalds@linux-foundation.org>2010-08-25 08:40:31 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-25 08:40:31 -0700
commite09b4e9a8d15dce04bedf1b860abeec00de31aad (patch)
tree8d103be84e6268a847affc3de46c42fd7bffe0b7
parent871eae4891a844e1fd065467b940f98dbf7aad1c (diff)
parentdffe2e1e1a1ddb566a76266136c312801c66dcf7 (diff)
Merge branch 'upstream/core' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen
* 'upstream/core' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen: xen: handle events as edge-triggered xen: use percpu interrupts for IPIs and VIRQs
-rw-r--r--drivers/xen/events.c21
1 files changed, 16 insertions, 5 deletions
diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index 72f91bff29c7..13365ba35218 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -112,6 +112,7 @@ static inline unsigned long *cpu_evtchn_mask(int cpu)
#define VALID_EVTCHN(chn) ((chn) != 0)
static struct irq_chip xen_dynamic_chip;
+static struct irq_chip xen_percpu_chip;
/* Constructor for packed IRQ information. */
static struct irq_info mk_unbound_info(void)
@@ -377,7 +378,7 @@ int bind_evtchn_to_irq(unsigned int evtchn)
irq = find_unbound_irq();
set_irq_chip_and_handler_name(irq, &xen_dynamic_chip,
- handle_level_irq, "event");
+ handle_edge_irq, "event");
evtchn_to_irq[evtchn] = irq;
irq_info[irq] = mk_evtchn_info(evtchn);
@@ -403,8 +404,8 @@ static int bind_ipi_to_irq(unsigned int ipi, unsigned int cpu)
if (irq < 0)
goto out;
- set_irq_chip_and_handler_name(irq, &xen_dynamic_chip,
- handle_level_irq, "ipi");
+ set_irq_chip_and_handler_name(irq, &xen_percpu_chip,
+ handle_percpu_irq, "ipi");
bind_ipi.vcpu = cpu;
if (HYPERVISOR_event_channel_op(EVTCHNOP_bind_ipi,
@@ -444,8 +445,8 @@ static int bind_virq_to_irq(unsigned int virq, unsigned int cpu)
irq = find_unbound_irq();
- set_irq_chip_and_handler_name(irq, &xen_dynamic_chip,
- handle_level_irq, "virq");
+ set_irq_chip_and_handler_name(irq, &xen_percpu_chip,
+ handle_percpu_irq, "virq");
evtchn_to_irq[evtchn] = irq;
irq_info[irq] = mk_virq_info(evtchn, virq);
@@ -964,6 +965,16 @@ static struct irq_chip xen_dynamic_chip __read_mostly = {
.retrigger = retrigger_dynirq,
};
+static struct irq_chip xen_percpu_chip __read_mostly = {
+ .name = "xen-percpu",
+
+ .disable = disable_dynirq,
+ .mask = disable_dynirq,
+ .unmask = enable_dynirq,
+
+ .ack = ack_dynirq,
+};
+
int xen_set_callback_via(uint64_t via)
{
struct xen_hvm_param a;

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