Function report |
Source Code:arch\x86\kernel\irq.c |
Create Date:2022-07-28 07:33:10 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:do_IRQ handles all normal device IRQ's (the special* SMP cross-CPU interrupts have their own specific* handlers).
Proto:__visible unsigned int __irq_entry do_IRQ(struct pt_regs *regs)
Type:unsigned int
Parameter:
Type | Parameter | Name |
---|---|---|
struct pt_regs * | regs |
235 | old_regs = set_irq_regs(regs) |
240 | entering_irq() |
245 | desc = Operations for contexts that are safe from preemption/interrupts. These* operations verify that preemption is disabled.(vector_irq[vector]) |
246 | If Value is more likely to compile time(!IS_ERR_OR_NULL(desc)) Then |
251 | Else |
252 | ack_APIC_irq() |
254 | If desc == VECTOR_UNUSED Then |
255 | pr_emerg_ratelimited("%s: %d.%d No irq handler for vector\n", __func__, smp_processor_id(), vector) |
258 | Else |
263 | exiting_irq() |
265 | set_irq_regs(old_regs) |
266 | Return 1 |
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