Function report |
Source Code:arch\x86\kernel\apic\vector.c |
Create Date:2022-07-28 08:28:23 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Name:x86_vector_alloc_irqs
Proto:static int x86_vector_alloc_irqs(struct irq_domain *domain, unsigned int virq, unsigned int nr_irqs, void *arg)
Type:int
Parameter:
Type | Parameter | Name |
---|---|---|
struct irq_domain * | domain | |
unsigned int | virq | |
unsigned int | nr_irqs | |
void * | arg |
536 | If disable_apic Then Return -ENXIO |
540 | If flags & X86_IRQ_ALLOC_CONTIGUOUS_VECTORS && nr_irqs > 1 Then Return -ENOSYS |
544 | irqd = q_domain_get_irq_data - Get irq_data associated with @virq and @domain*@domain: domain to match*@virq: IRQ number to get irq_data |
546 | node = irq_data_get_node(irqd) |
547 | WARN_ON_ONCE(chip_data) |
548 | apicd = alloc_apic_chip_data(node) |
549 | If Not apicd Then |
555 | chip = lapic_controller |
566 | If flags & X86_IRQ_ALLOC_LEGACY Then |
567 | If Not vector_configure_legacy(virq + i, irqd, apicd) Then Continue |
571 | err = assign_irq_vector_policy(irqd, info) |
572 | trace_vector_setup(virq + i, TSC's on different sockets may be reset asynchronously.* This may cause the TSC ADJUST value on socket 0 to be NOT 0., err) |
573 | If err Then |
580 | Return 0 |
582 | error : |
583 | x86_vector_free_irqs(domain, virq, i) |
584 | Return err |
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