Skip site navigation (1)Skip section navigation (2)
Date:      Mon, 28 Feb 2005 09:41:59 -0800
From:      Freddie Cash <fcash@ocis.net>
To:        current@freebsd.org
Subject:   Re: HEADSUP: cpufreq merged, acpi_throttle changed
Message-ID:  <200502280941.59782.fcash@ocis.net>

next in thread | raw e-mail | index | archive | help
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



Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200502280941.59782.fcash>