Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:arch\x86\kernel\fpu\init.c Create Date:2022-07-28 07:49:02
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:fpu__init_system_early_generic

Proto:static void fpu__init_system_early_generic(struct cpuinfo_x86 *c)

Type:void

Parameter:

TypeParameterName
struct cpuinfo_x86 *c
73  If Not boot_cpu_has(CPU has CPUID instruction itself ) && Not st_bit - Determine whether a bit is set*@nr: bit number to test*@addr: Address to start counting from Then
75  If fpu__probe_without_cpuid() Then setup_force_cpu_cap(Onboard FPU )
77  Else setup_clear_cpu_cap(Onboard FPU )
82  If Not test_cpu_cap( & common cpu data for all cpus , Onboard FPU ) Then
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  cycle asm volatile
Caller
NameDescribe
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: