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authorGlauber Costa <gcosta@redhat.com>2008-07-11 15:08:39 -0300
committerIngo Molnar <mingo@elte.hu>2008-10-13 10:21:38 +0200
commit2f97435e57926a5cdc104fe5a7c64932cb62cdda (patch)
treee3be9ae8d6475466db0d154b5610681b4d3d427e /arch
parent2ff298372d03b01c9ca8738ee2791227a81928e2 (diff)
x86: factor out irq initialization for x86_64
Provide apic_intr_init and smp_intr_init functions. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kernel/irqinit_64.c43
1 files changed, 28 insertions, 15 deletions
diff --git a/arch/x86/kernel/irqinit_64.c b/arch/x86/kernel/irqinit_64.c
index 1f26fd9ec4f..18968a78ab3 100644
--- a/arch/x86/kernel/irqinit_64.c
+++ b/arch/x86/kernel/irqinit_64.c
@@ -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);