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Commit 2f97435e authored by Glauber Costa's avatar Glauber Costa Committed by Ingo Molnar
Browse files

x86: factor out irq initialization for x86_64 



Provide apic_intr_init and smp_intr_init functions.

Signed-off-by: default avatarGlauber Costa <gcosta@redhat.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 2ff29837

arch/x86/kernel/irqinit_64.c

+28 −15
Original line number Diff line number Diff line
@@ -164,22 +164,8 @@ static void __init init_ISA_irqs (void) 


void init_IRQ(void) __attribute__((weak, alias("native_init_IRQ")));



void __init native_init_IRQ(void)

void __init smp_intr_init(void)

{

	int i;



	init_ISA_irqs();

	/*

	 * Cover the whole vector space, no vector can escape

	 * us. (some of these will be overridden and become

	 * 'special' SMP interrupts)

	 */

	for (i = 0; i < (NR_VECTORS - FIRST_EXTERNAL_VECTOR); i++) {

		int vector = FIRST_EXTERNAL_VECTOR + i;

		if (vector != IA32_SYSCALL_VECTOR)

			set_intr_gate(vector, interrupt[i]);

	}



#ifdef CONFIG_SMP

	/*

	 * The reschedule interrupt is a CPU-to-CPU reschedule-helper
@@ -207,6 +193,14 @@ void __init native_init_IRQ(void) 
	/* Low priority IPI to cleanup after moving an irq */

	set_intr_gate(IRQ_MOVE_CLEANUP_VECTOR, irq_move_cleanup_interrupt);

#endif

}



void __init apic_intr_init(void)

{

#ifdef CONFIG_SMP

	smp_intr_init();

#endif



	alloc_intr_gate(THERMAL_APIC_VECTOR, thermal_interrupt);

	alloc_intr_gate(THRESHOLD_APIC_VECTOR, threshold_interrupt);
@@ -216,6 +210,25 @@ void __init native_init_IRQ(void) 
	/* IPI vectors for APIC spurious and error interrupts */

	alloc_intr_gate(SPURIOUS_APIC_VECTOR, spurious_interrupt);

	alloc_intr_gate(ERROR_APIC_VECTOR, error_interrupt);

}



void __init native_init_IRQ(void)

{

	int i;



	init_ISA_irqs();

	/*

	 * Cover the whole vector space, no vector can escape

	 * us. (some of these will be overridden and become

	 * 'special' SMP interrupts)

	 */

	for (i = 0; i < (NR_VECTORS - FIRST_EXTERNAL_VECTOR); i++) {

		int vector = FIRST_EXTERNAL_VECTOR + i;

		if (vector != IA32_SYSCALL_VECTOR)

			set_intr_gate(vector, interrupt[i]);

	}



	apic_intr_init();



	if (!acpi_ioapic)

		setup_irq(2, &irq2);