函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:arch\x86\kernel\apic\io_apic.c Create Date:2022-07-27 09:28:56
Last Modify:2020-03-16 21:24:45 Copyright©Brick
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函数名称：__ioapic_read_entry

函数原型：static struct IO_APIC_route_entry __ioapic_read_entry(int apic, int pin)

返回类型：struct IO_APIC_route_entry

参数：

类型参数名称
intapic
intpin
311  w1等于io_apic_read(apic, 0x10 + 2 * pin)
312  w2等于io_apic_read(apic, 0x11 + 2 * pin)
314  返回:entry
调用者
名称描述
ioapic_read_entry
__eoi_ioapic_pinIO-APIC versions below 0x20 don't support EOI register
ioapic_irq_get_chip_stateInterrupt shutdown masks the ioapic pin, but the interrupt might already* be in flight, but not yet serviced by the target CPU. That means* __synchronize_hardirq() would return and claim that everything is calmed* down