diff options
Diffstat (limited to 'arch/x86/kernel/irqinit_64.c')
| -rw-r--r-- | arch/x86/kernel/irqinit_64.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/arch/x86/kernel/irqinit_64.c b/arch/x86/kernel/irqinit_64.c index 8670b3ce626..31ebfe38e96 100644 --- a/arch/x86/kernel/irqinit_64.c +++ b/arch/x86/kernel/irqinit_64.c @@ -69,6 +69,18 @@ DEFINE_PER_CPU(vector_irq_t, vector_irq) = { [IRQ15_VECTOR + 1 ... NR_VECTORS - 1] = -1 }; +int vector_used_by_percpu_irq(unsigned int vector) +{ + int cpu; + + for_each_online_cpu(cpu) { + if (per_cpu(vector_irq, cpu)[vector] != -1) + return 1; + } + + return 0; +} + void __init init_ISA_irqs(void) { int i; @@ -76,8 +88,7 @@ void __init init_ISA_irqs(void) init_bsp_APIC(); init_8259A(0); - for (i = 0; i < 16; i++) { - /* first time call this irq_desc */ + for (i = 0; i < NR_IRQS_LEGACY; i++) { struct irq_desc *desc = irq_to_desc(i); desc->status = IRQ_DISABLED; @@ -122,6 +133,7 @@ static void __init smp_intr_init(void) /* Low priority IPI to cleanup after moving an irq */ set_intr_gate(IRQ_MOVE_CLEANUP_VECTOR, irq_move_cleanup_interrupt); + set_bit(IRQ_MOVE_CLEANUP_VECTOR, used_vectors); #endif } |