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| author | Andrew Cooper <andrew.cooper3@citrix.com> | 2012-02-07 18:44:12 +0000 |
|---|---|---|
| committer | Andrew Cooper <andrew.cooper3@citrix.com> | 2012-02-07 18:44:12 +0000 |
| commit | 2ae8b9173fb2388af6514c730d620ed5f450bc34 (patch) | |
| tree | 38a6a0de8164d46d9d6d930287dc0da6b01978d6 /xen/arch/x86/irq.c | |
| parent | 7af6c7ad830ede5b9aad3fe58140e3f0aa0787af (diff) | |
| download | xen-2ae8b9173fb2388af6514c730d620ed5f450bc34.tar.gz xen-2ae8b9173fb2388af6514c730d620ed5f450bc34.tar.bz2 xen-2ae8b9173fb2388af6514c730d620ed5f450bc34.zip | |
irq: Add extra debugging to help track down why an assertion is failing
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Keir Fraser <keir@xen.org>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
Diffstat (limited to 'xen/arch/x86/irq.c')
| -rw-r--r-- | xen/arch/x86/irq.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/xen/arch/x86/irq.c b/xen/arch/x86/irq.c index bbcfa0988a..e9e1a9e552 100644 --- a/xen/arch/x86/irq.c +++ b/xen/arch/x86/irq.c @@ -608,6 +608,8 @@ void move_native_irq(struct irq_desc *desc) desc->handler->enable(desc); } +static void dump_irqs(unsigned char key); + fastcall void smp_irq_move_cleanup_interrupt(struct cpu_user_regs *regs) { unsigned vector, me; @@ -667,7 +669,18 @@ fastcall void smp_irq_move_cleanup_interrupt(struct cpu_user_regs *regs) if ( desc->arch.used_vectors ) { - ASSERT(test_bit(vector, desc->arch.used_vectors)); + if ( unlikely(!test_bit(vector, desc->arch.used_vectors)) ) + { + bitmap_scnlistprintf(keyhandler_scratch, + sizeof(keyhandler_scratch), + desc->arch.used_vectors->_bits, + NR_VECTORS); + printk("*** IRQ BUG found ***\n" + "CPU%d -Testing vector %d from bitmap %s\n", + me, vector, keyhandler_scratch); + dump_irqs('i'); + BUG(); + } clear_bit(vector, desc->arch.used_vectors); } } |