Re: [PATCH 1/2] cpufreq: serialize calls to __cpufreq_governor()

["Robert Schöne" <robert.schoene@tu-dresden.de>]

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In v2 my system still crashes when concurrently setting the governors
I wasn't able to get a stack trace.

Robert 

Am Freitag, den 10.10.2014, 07:48 -0400 schrieb Prarit Bhargava:
> 
> On 10/10/2014 07:46 AM, Viresh Kumar wrote:
> > On 10 October 2014 17:08, Prarit Bhargava <prarit@redhat.com> wrote:
> >> Yes, I unfortunately have a different set of issues with vanilla 3.17
> >> (previously mentioned locking issue).  I've done a quick and dirty hack to get
> >> around that, and everything seems okay.
> >>
> >> I apply your patches and I get a panic the first time I read sysfs
> > 
> > All changes in my patches are touching these routines:
> > - cpufreq_set_policy()
> > - __cpufreq_governor()
> > 
> > And these two doesn't get called in the read path at all. And so I am not sure
> > how can these make things bad for you.
> > 
> > I had doubt on just one change, can you please check the v2 branch once to
> > see if that gives the same problem ?
> > 
> 
> Yep, trying it now ...
> 
> P.

-- 

Dipl.-Inf. Robert Schoene
Computer Scientist - R&D Energy Efficient Computing

Technische Universitaet Dresden
Center for Information Services and High Performance Computing
Distributed and Data Intensive Computing
01062 Dresden
Tel.: +49 (351) 463-42483
Fax : +49 (351) 463-37773
E-Mail: Robert.Schoene@tu-dresden.de

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