Re: HEADSUP: cpufreq merged, acpi_throttle changed

From: Freddie Cash (fcash_at_ocis.net)
Date: 02/28/05

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    Date: Mon, 28 Feb 2005 09:41:59 -0800
To: current@freebsd.org

    On February 26, 2005 11:33 am, Nate Lawson wrote:
    > To those running 5.x, I wanted to let you know about a change in
    > behavior for acpi throttling. It is now accessible through the
    > sysctl dev.cpu.0.freq and dev.cpu.0.freq_levels. Also, you can now
    > run -current cpufreq.ko or acpi.ko to get more drivers. Those won't
    > be in 5.4-R but will be MFCd after the release. Please let me know
    > if you have any new problems, especially with throttling.

    Just a note to let you know that the latest round of cpufreq.ko and
    acpi.ko updates have once again made everything work on my Toshiba A60
    laptop. :) Thanks for all the hard work you've done in this area.

    A cvsup to 6-CURRENT sources on Friday, and a recompile of the kernel
    without CPU_ENABLE_TCC gives me the following set of sysctls:
      dev.cpu.0.%desc: ACPI CPU (2 Cx states)
      dev.cpu.0.%driver: cpu
      dev.cpu.0.%location: handle=\_PR_.CPU0
      dev.cpu.0.%pnpinfo: _HID=none _UID=0
      dev.cpu.0.%parent: acpi0
      dev.cpu.0.freq: 2800
      dev.cpu.0.freq_levels: 2800/-1 2450/-1 2100/-1 1750/-1 1400/-1
     1050/-1 700/-1 350/-1
      dev.p4tcc.0.%parent: cpu0
      dev.cpufreq.0.%driver: cpufreq
      dev.cpufreq.0.%parent: cpu0

    I haven't tested any of the freq_levels yet, but it's nice to see them
    listed again. :)

    This is with acpi_load="YES" and cpufreq_load="YES" in loader.conf. 

    -- 
Freddie Cash
fcash@ocis.net
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