From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Rafael J. Wysocki" Subject: Re: Problem with cpufreq and i5 since post 3.9.0 Date: Sat, 28 Dec 2013 01:50:40 +0100 Message-ID: <1593264.QxQbtiBB9a@vostro.rjw.lan> References: <20131227185924.GH17115@Blackswan> <20131227195350.GI17115@Blackswan> <20131228000900.GJ17115@Blackswan> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7Bit Return-path: Received: from v094114.home.net.pl ([79.96.170.134]:64342 "HELO v094114.home.net.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1753208Ab3L1AhJ (ORCPT ); Fri, 27 Dec 2013 19:37:09 -0500 In-Reply-To: <20131228000900.GJ17115@Blackswan> Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: David Woodfall Cc: linux-kernel@vger.kernel.org, Viresh Kumar , linux-pm@vger.kernel.org CC: +Viresh and linux-pm On Saturday, December 28, 2013 12:09:01 AM David Woodfall wrote: > On (27/12/13 19:53), Dave Woodfall put forth the proposition: > >On (27/12/13 20:44), Heinz Diehl put forth the proposition: > >>On 27.12.2013, David Woodfall wrote: > >> > >>>But any of the newer kernel versions I've tested only give me > >>>performance and powersave. > >> > >>I don't use any Fedora kernel, so I can't tell which governors are > >>enabled in those. You should check the value of "CONFIG_CPU_FREQ_GOV" > >>in the respective .config file for your installed kernel. > >> > >>In short: It seems that only "performance" and "powersave" are > >>compiled in. > > > >No, I used the same .config in all versions that I tested. I've also > >tried setting them as modules rather than built-in. This is the stock > >slackware .config: > > > >CONFIG_CPU_FREQ=y > >CONFIG_CPU_FREQ_TABLE=m > >CONFIG_CPU_FREQ_GOV_COMMON=y > >CONFIG_CPU_FREQ_STAT=m > >CONFIG_CPU_FREQ_STAT_DETAILS=y > ># CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set > >CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE=y > ># CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set > ># CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set > >CONFIG_CPU_FREQ_GOV_PERFORMANCE=m > >CONFIG_CPU_FREQ_GOV_POWERSAVE=m > >CONFIG_CPU_FREQ_GOV_USERSPACE=y > >CONFIG_CPU_FREQ_GOV_ONDEMAND=m > >CONFIG_CPU_FREQ_GOV_CONSERVATIVE=m > > > >And modprobing any governor module does not change the output of > >scaling_available_governors. > > > >-Dave > > I'm also experiencing this with a Intel G640 dual core machine. > Exactly the same effect. Do you have CONFIG_X86_INTEL_PSTATE set? -- I speak only for myself. Rafael J. Wysocki, Intel Open Source Technology Center.