函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:arch\x86\kernel\cpu\common.c Create Date:2022-07-27 08:55:20
Last Modify:2020-03-16 20:28:31 Copyright©Brick
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函数名称：Current gdt points %fs at the "master" per-cpu area: after this,* it's on the real one.

函数原型：void switch_to_new_gdt(int cpu)

返回类型：void

参数：

类型参数名称
intcpu
617  Load the original GDT from the per-cpu structure
619  load_percpu_segment(cpu)
调用者
名称描述
cpu_initpu_init() initializes state that is per-CPU. Some data is already* initialized (naturally) in the bootstrap process, such as the GDT* and IDT. We reload them nevertheless, this function acts as a* 'CPU state barrier', nothing should get across.
native_smp_prepare_boot_cpuEarly setup to make printk work.
setup_per_cpu_areasSMP体系CPU分配内存