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Old 07-05-2010, 10:57 PM   #1
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-*- 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.
Old 07-07-2010, 02:39 PM   #2
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I doubt you can turn it off. Just select the help option and it will tell you the dependencies, for this one they are:

  ┌────────────────────────── 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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