# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1238495972 -3600
# Node ID 1f893d68a6ad79e60348a4e27aec23157240d054
# Parent d64a487d6c32e43864d4ccca065d87606ff7b737
xen: include MSI/MSI-X information in interrupt debug output
With per-domain irq-to-vector mappings, dump_irqs() omitted some
vectors. This patch cycles through the vectors rather than
interrupts and prints the same debug information. The patch also
prints out information about mapped but unbound interrupts.
Signed-off-by: Rolf Neugebauer <rolf.neugebauer@xxxxxxxxxxxxx>
---
xen/arch/x86/irq.c | 38 ++++++++++++++++++++++----------------
1 files changed, 22 insertions(+), 16 deletions(-)
diff -r d64a487d6c32 -r 1f893d68a6ad xen/arch/x86/irq.c
--- a/xen/arch/x86/irq.c Tue Mar 31 11:38:05 2009 +0100
+++ b/xen/arch/x86/irq.c Tue Mar 31 11:39:32 2009 +0100
@@ -1069,7 +1069,7 @@ extern void dump_ioapic_irq_info(void);
static void dump_irqs(unsigned char key)
{
- int i, irq, vector;
+ int i, glob_irq, irq, vector;
irq_desc_t *desc;
irq_guest_action_t *action;
struct domain *d;
@@ -1077,41 +1077,47 @@ static void dump_irqs(unsigned char key)
printk("Guest interrupt information:\n");
- for ( irq = 0; irq < NR_IRQS; irq++ )
- {
- vector = irq_to_vector(irq);
- if ( vector == 0 )
+ for ( vector = 0; vector < NR_VECTORS; vector++ )
+ {
+
+ glob_irq = vector_to_irq(vector);
+
+ desc = &irq_desc[vector];
+ if ( desc == NULL || desc->handler == &no_irq_type )
continue;
- desc = &irq_desc[vector];
-
spin_lock_irqsave(&desc->lock, flags);
- if ( desc->status & IRQ_GUEST )
+ if ( !(desc->status & IRQ_GUEST) )
+ printk(" Vec%3d IRQ%3d: type=%-15s status=%08x "
+ "mapped, unbound\n",
+ vector, glob_irq, desc->handler->typename, desc->status);
+ else
{
action = (irq_guest_action_t *)desc->action;
- printk(" IRQ%3d Vec%3d: type=%-15s status=%08x "
+ printk(" Vec%3d IRQ%3d: type=%-15s status=%08x "
"in-flight=%d domain-list=",
- irq, vector, desc->handler->typename,
+ vector, glob_irq, desc->handler->typename,
desc->status, action->in_flight);
for ( i = 0; i < action->nr_guests; i++ )
{
d = action->guest[i];
- printk("%u(%c%c%c%c)",
- d->domain_id,
- (test_bit(d->pirq_to_evtchn[irq],
+ irq = domain_vector_to_irq(d, vector);
+ printk("%u:%3d(%c%c%c%c)",
+ d->domain_id, irq,
+ (test_bit(d->pirq_to_evtchn[glob_irq],
&shared_info(d, evtchn_pending)) ?
'P' : '-'),
- (test_bit(d->pirq_to_evtchn[irq] /
+ (test_bit(d->pirq_to_evtchn[glob_irq] /
BITS_PER_EVTCHN_WORD(d),
&vcpu_info(d->vcpu[0], evtchn_pending_sel)) ?
'S' : '-'),
- (test_bit(d->pirq_to_evtchn[irq],
+ (test_bit(d->pirq_to_evtchn[glob_irq],
&shared_info(d, evtchn_mask)) ?
'M' : '-'),
- (test_bit(irq, d->pirq_mask) ?
+ (test_bit(glob_irq, d->pirq_mask) ?
'M' : '-'));
if ( i != action->nr_guests )
printk(",");
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