Commit 7a959cff authored by Yinghai Lu's avatar Yinghai Lu Committed by Ingo Molnar
Browse files

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: default avatarYinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: default avatarIngo 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 @@ next: 
                        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();

	}

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