Commit 7a959cff authored Aug 19, 2008 by Yinghai Lu Committed by Ingo Molnar Oct 16, 2008

x86: add debug info for 32bit sparse_irq



so could figure out bugs where we get an interrupt, but vector_irq is
not initialized yet.

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

parent 497c9a19

arch/x86/kernel/io_apic_32.c

+6 −2

Original line number	Diff line number	Diff line
		@@ -1114,8 +1114,12 @@ static int __assign_irq_vector(int irq, cpumask_t mask)
		cfg->move_in_progress = 1;
		cfg->old_domain = cfg->domain;
		}
		for_each_cpu_mask_nr(new_cpu, new_mask)
		printk(KERN_DEBUG "assign_irq_vector: irq %d vector %#x cpu ", irq, vector);
		for_each_cpu_mask_nr(new_cpu, new_mask) {
		per_cpu(vector_irq, new_cpu)[vector] = irq;
		printk(KERN_CONT " %d ", new_cpu);
		}
		printk(KERN_CONT "\n");
		cfg->vector = vector;
		cfg->domain = domain;
		return 0;

arch/x86/kernel/io_apic_64.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -1394,6 +1394,8 @@ __apicdebuginit(void) print_IO_APIC(void)
		printk(KERN_DEBUG "IO APIC #%d......\n", mp_ioapics[apic].mp_apicid);
		printk(KERN_DEBUG ".... register #00: %08X\n", reg_00.raw);
		printk(KERN_DEBUG "....... : physical APIC id: %02X\n", reg_00.bits.ID);
		printk(KERN_DEBUG "....... : Delivery Type: %X\n", reg_00.bits.delivery_type);
		printk(KERN_DEBUG "....... : LTS : %X\n", reg_00.bits.LTS);

		printk(KERN_DEBUG ".... register #01: %08X\n", (int )&reg_01);
		printk(KERN_DEBUG "....... : max redirection entries: %04X\n", reg_01.bits.entries);

arch/x86/kernel/irq_32.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -237,8 +237,8 @@ unsigned int do_IRQ(struct pt_regs *regs)

		desc = irq_to_desc(irq);
		if (unlikely(!desc)) {
		printk(KERN_EMERG "%s: cannot handle IRQ %d vector %#x\n",
		__func__, irq, vector);
		printk(KERN_EMERG "%s: cannot handle IRQ %d vector %#x cpu %d\n",
		__func__, irq, vector, smp_processor_id());
		BUG();
		}