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-   -   -*- cpu idle pm support (https://www.linuxquestions.org/questions/linux-kernel-70/%2A-cpu-idle-pm-support-818171/)

Pale 07-05-2010 09:57 PM
-*- cpu idle pm support
 
Server OS: Gentoo Linux
Processor: AMD Athlon64 3700 2.4GHZ
(Let me know if more info is needed)

I need CPU IDLE PM SUPPORT disabled.

In 'make menuconfig' of my kernel, I can't disable CPU IDLE PM SUPPORT because something is dependent on it I suppose.

Does anyone know what is dependent on it, or can tell me how to find what is dependent on it?

Any help is appreciated.

H_TeXMeX_H 07-07-2010 01:39 PM
I doubt you can turn it off. Just select the help option and it will tell you the dependencies, for this one they are:

Code:
  ┌────────────────────────── CPU idle PM support ──────────────────────────┐
  │ CONFIG_CPU_IDLE:                                                        │ 
  │                                                                        │ 
  │ CPU idle is a generic framework for supporting software-controlled      │ 
  │ idle processor power management.  It includes modular cross-platform    │ 
  │ governors that can be swapped during runtime.                          │ 
  │                                                                        │ 
  │ If you're using an ACPI-enabled platform, you should say Y here.        │ 
  │                                                                        │ 
  │ Symbol: CPU_IDLE [=y]                                                  │ 
  │ Prompt: CPU idle PM support                                            │ 
  │  Defined at drivers/cpuidle/Kconfig:2                                  │ 
  │  Location:                                                            │ 
  │    -> Power management and ACPI options                                │ 
  │  Selected by: ACPI [=y] && !IA64_HP_SIM [=IA64_HP_SIM] && (IA64 [=IA64 ] || X86 [=y]) && PCI [=y] && PM [=y] │ 
You would have to disable PM = power management or PCI, which is a bad idea.


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