[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20071113213313.GD5747@frankl.hpl.hp.com>
Date: Tue, 13 Nov 2007 13:33:13 -0800
From: Stephane Eranian <eranian@....hp.com>
To: Greg KH <gregkh@...e.de>
Cc: Philip Mucci <mucci@...utk.edu>, William Cohen <wcohen@...hat.com>,
akpm@...l.org, Robert Richter <robert.richter@....com>,
linux-kernel@...r.kernel.org, Perfmon <perfmon@...ali.hpl.hp.com>,
Andi Kleen <andi@...stfloor.org>,
perfmon2-devel@...ts.sourceforge.net,
OSPAT devel <ospat-devel@...utk.edu>,
papi list <ptools-perfapi@...utk.edu>,
perfmon@...ali.hpl.hp.com
Subject: Re: [perfmon] Re: [perfmon2] perfmon2 merge news
Greg,
On Tue, Nov 13, 2007 at 10:59:24AM -0800, Greg KH wrote:
> On Tue, Nov 13, 2007 at 10:47:45AM -0800, Philip Mucci wrote:
> > Hi folks,
> >
> > Well, I can say the mood here at supercomputing'07 is pretty somber in
> > regards to the latest exchange of messages regarding the perfmon patches.
>
> "somber"?
>
I am the core developer of this and I am not as pessimistic as Phil. Yet I admit
Phil has been asking for this kind of kernel interface for a very very long time ;-<
> Why?
>
> We (a number of the kernel developers) want to see the perfmon code make
> it into the kernel tree, unfortunatly, in the current state it is in,
> that's not going to happen.
>
> Andi specified a way that this can happen, just refactor your patches
> into smaller bits that can be reviewed and applied.
>
I think I understand your concerns. I will work on this. I think it is possible to
refactor. It will certainly be painful (for me), but I think it can be done within
some reasonable delay. Of course, it would be help if you could better qualify what
you mean by 'smaller'.
> If you, or anyone else has any questions about this, please let us know.
> So far, I have not seen any response to his message, so I'm guessing
> that the perfmon developers either are off working on this, or don't
> care.
>
I will start working on this once I fix the tickless/hrtimer issues.
> And if they don't care, then yes, I agree with your "somber" feeling...
>
I do care a lot actually. Believe me, I do spend a lot of effort and energy
on this project everyday, like many others around the world, and I intend for
it to succeed. We have reached a point in the development of processor hardware
where this kind of features is crucial and it is not just for HPC folks anymore.
--
-Stephane
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists