Bug 14377

Summary: "conservative" cpufreq governor broken
Product: Power Management Reporter: Rafael J. Wysocki (rjw)
Component: cpufreqAssignee: cpufreq
Status: CLOSED CODE_FIX    
Severity: normal    
Priority: P1    
Hardware: All   
OS: Linux   
Kernel Version: 2.6.31 Subsystem:
Regression: Yes Bisected commit-id:
Bug Depends on:    
Bug Blocks: 13615    

Description Rafael J. Wysocki 2009-10-11 20:46:47 UTC 
Subject    : [BISECTED] "conservative" cpufreq governor broken
Submitter  : Steven Noonan <steven@uplinklabs.net>
Date       : 2009-10-05 16:32
References : http://marc.info/?l=linux-kernel&m=125476067108252&w=4

This entry is being used for tracking a regression from 2.6.30.  Please don't
close it until the problem is fixed in the mainline.

Caused by:

commit f2e21c9610991e95621a81407cdbab881226419b
Author: Eero Nurkkala <ext-eero.nurkkala@nokia.com>
Date:   Mon May 25 09:57:37 2009 +0300

    NOHZ: Properly feed cpufreq ondemand governor

    Signed-off-by: Eero Nurkkala <ext-eero.nurkkala@nokia.com>
    Reported-by: Tero Kristo <tero.kristo@nokia.com>
    Acked-by: Rik van Riel <riel@redhat.com>
    Acked-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
    Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Comment 1 Rafael J. Wysocki 2009-10-11 20:47:05 UTC 
First-Bad-Commit : f2e21c9610991e95621a81407cdbab881226419b
Comment 2 Rafael J. Wysocki 2009-10-12 21:37:54 UTC 
On Monday 12 October 2009, Steven Noonan wrote:
> Hi Rafael,
> 
> There's a commit to fix this in the stable queue for 2.6.31.x and said
> fix is already in the 2.6.32 tree. The commit is titled "NOHZ: update
> idle state also when NOHZ is inactive" (fdc6f192e7).
> 
> - Steven
> 
> On Sun, Oct 11, 2009 at 4:01 PM, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> > This message has been generated automatically as a part of a report
> > of regressions introduced between 2.6.30 and 2.6.31.
> >
> > The following bug entry is on the current list of known regressions
> > introduced between 2.6.30 and 2.6.31.  Please verify if it still should
> > be listed and let me know (either way).
> >
> >
> > Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=14377
> > Subject         : "conservative" cpufreq governor broken
> > Submitter       : Steven Noonan <steven@uplinklabs.net>
> > Date            : 2009-10-05 16:32 (7 days old)