函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:arch\x86\kernel\cpu\umwait.c Create Date:2022-07-27 08:57:07
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：umwait_update_control_msr

函数原型：static void umwait_update_control_msr(void *unused)

返回类型：void

参数：

类型参数名称
void *unused
40  lockdep_assert_irqs_disabled()
41  wrmsr(MSR_IA32_UMWAIT_CONTROL, READ_ONCE(Cache IA32_UMWAIT_CONTROL MSR. This is a systemwide control. By default,* umwait max time is 100000 in TSC-quanta and C0.2 is enabled), 0)
调用者
名称描述
umwait_cpu_onlineThe CPU hotplug callback sets the control MSR to the global control* value
umwait_syscore_resumeOn resume, restore IA32_UMWAIT_CONTROL MSR on the boot processor which* is the only active CPU at this time