硬中断--irq_matrix结构体

用户态接口root@vm0:~# cat /sys/kernel/debug/irq/domains/DMAR-MSI name: DMAR-MSI size: 0 mapped: 1 flags: 0x00000013 parent: VECTOR name: VEC ...
2024-12-03

硬中断--x86中断初始化

[ 0.001000] irq: ===================== ...
2024-12-03

硬中断--中断号映射

hwirq 和 irq 的映射int irq_domain_alloc_descs(int virq, unsigned int cnt, irq_hw_number_t hwirq, int node, const struct irq_affinity_desc * ...
2024-12-03

硬中断--数据结构

struct irqaction { irq_handler_t handler; // request_irq 初始化 void *dev_id; void __percpu ...
2024-12-03

硬中断--初始化

kernel/irq/irqdesc.c: early_trap_initarch/arm/kernel/irq.c: init_IRQ // 非稀疏irq int __init early_irq_init(void) { in ...
2024-12-03

硬中断--硬中断号的解析

irq_of_parse_and_mapirq_create_of_mapping armstruct of_phandle_args { struct device_node *np; int args_count; uint32_t args[MAX_PHAND ...
2024-12-03

软中断--wakeup_softirqd

static void wakeup_softirqd(void) { /* Interrupts are disabled: no need to stop preemption */ struct task_struct *tsk = __this_cpu_read(k ...
2024-12-03

硬中断--apic

硬件规范APIC的信息在SDM vol3中有比较详细的介绍外设的中断过程 linux.git/arch/x86/kernel/apic/io_apic.c static void __ioapic_write_entry(int apic, int pin, struct IO_APIC_route ...
2024-12-03

dpdk_legacy_memory

...
2024-12-03

dpdk_iova

https://www.intel.com/content/www/us/en/developer/articles/technical/memory-in-dpdk-part-2-deep-dive-into-iova.html ...
2024-12-03
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