函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:arch\x86\kernel\fpu\init.c Create Date:2022-07-27 08:49:04
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：fpu__init_system_early_generic

函数原型：static void fpu__init_system_early_generic(struct cpuinfo_x86 *c)

返回类型：void

参数：

类型参数名称
struct cpuinfo_x86 *c
73  如果非boot_cpu_has(CPU has CPUID instruction itself )且非st_bit - Determine whether a bit is set*@nr: bit number to test*@addr: Address to start counting from则
75  如果fpu__probe_without_cpuid()则setup_force_cpu_cap(Onboard FPU )
77  否则setup_clear_cpu_cap(Onboard FPU )
82  如果非test_cpu_cap( & common cpu data for all cpus , Onboard FPU )则
83  These can be used to print at the various log levels.* All of these will print unconditionally, although note that pr_debug()* and other debug macros are compiled out unless either DEBUG is defined* or CONFIG_DYNAMIC_DEBUG is set.("x86/fpu: Giving up, no FPU found and no math emulation present\n")
84  循环asm volatile
调用者
名称描述
fpu__init_systemCalled on the boot CPU once per system bootup, to set up the initial* FPU state that is later cloned into all processes: