Date: Sun, 19 Mar 2006 12:00:47 +0000
From: Alexander Clouter <alex@digriz.org.uk>
To: Parag Warudkar <kernel-stuff@comcast.net>
Cc: Andrew Morton <akpm@osdl.org>, Linus Torvalds <torvalds@osdl.org>,
       linux-kernel@vger.kernel.org, jun.nakajima@intel.com, davej@redhat.com
Subject: Re: OOPS: 2.6.16-rc6 cpufreq_conservative
Message-ID: <20060319120047.GA26018@inskipp.digriz.org.uk>
References: <200603181525.14127.kernel-stuff@comcast.net> <Pine.LNX.4.64.0603181321310.3826@g5.osdl.org> <20060318165302.62851448.akpm@osdl.org> <200603190134.01833.kernel-stuff@comcast.net>
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Hi,

Parag Warudkar <kernel-stuff@comcast.net> [20060319 01:34:01 -0500]:
>
> On Saturday 18 March 2006 19:53, Andrew Morton wrote:
> > I might stick a once-off WARN_ON() in there so someone gets in
> > and works out why we keep on having to graft mysterious null-pointer
> > avoidances into cpufreq.
> cpufreq_conservative should be marked broken on SMP - I have used it on U=
P=20
> boxes without trouble but I can't even safely modprobe it on SMP - it nea=
rly=20
> ate my filesystem. =20
>=20
> And there seem to be multiple different problems with it - I get differen=
t=20
> oopses depending upon whether or not I have loaded it before or after the=
=20
> ondemand module.  Weird enough - cpufreq_conservative shares much of it's=
=20
> code with cpufreq_ondemand, which works without any problem.=20
>=20
Well its drifted a bit, however I submitted a number of patches here about=
=20
two weeks ago to bring it back into line and hopefully make it HOTPLUG safe.

The new set of patches pretty much make conservative's codebase identical t=
o=20
ondemands....as no one has posted back having used these or anything what a=
m=20
I to do?!

> Let me know if anyone has objection to marking cpufreq_conservative=20
> depends !SMP - I am planning to submit  a patch soon.
>=20
Doesn't bother me, what does is no one is trying to updates to conservative=
=20
before deciding to declare it borked?

Hey ho....

Alex

> Parag

--=20
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