From: Borislav Petkov <bp@alien8.de>
To: Vince Weaver <vweaver1@eecs.utk.edu>
Cc: Ingo Molnar <mingo@elte.hu>,
torvalds@linux-foundation.org, linux-kernel@vger.kernel.org,
Peter Zijlstra <peterz@infradead.org>,
Stephane Eranian <eranian@gmail.com>,
Andi Kleen <ak@linux.intel.com>,
Thomas Gleixner <tglx@linutronix.de>,
Robert Richter <robert.richter@amd.com>
Subject: Re: re-enable Nehalem raw Offcore-Events support
Date: Sat, 30 Apr 2011 10:11:32 +0200 [thread overview]
Message-ID: <20110430081132.GA3705@liondog.tnic> (raw)
In-Reply-To: <alpine.DEB.2.00.1104292200110.9459@cl320.eecs.utk.edu>
On Fri, Apr 29, 2011 at 10:17:04PM -0400, Vince Weaver wrote:
> > AMD managed to keep a large chunk of their events stable even across very
> > radical changes of the underlying hardware. I have two AMD systems produced
> > *10* years apart and they even use the same event encodings for the major
> > events.
>
> Well guess what, AMD family 15h changes all of that.
I don't see a big problem here, Robert has a patch that takes care of
counter constraints. It probably needs a bit more work but we'll get
where we need to be.
> And you're not going to like LWP. They got tired of waiting for a
> workable kernel perf counter interface and moved it completely to
> usersapce,
I don't know where you get your information but that's absolutely and
completely not nearly even beginning to smell the truth.
> and there's nothing you can do about it unless you start blocking the
> xsave patches from getting in.
Look at tip/x86/xsave, looks like LWP support will most likely be in
2.6.40.
--
Regards/Gruss,
Boris.
next prev parent reply other threads:[~2011-04-30 8:11 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-29 15:04 Vince Weaver
2011-04-29 15:27 ` Andi Kleen
2011-04-29 16:49 ` Ingo Molnar
2011-04-29 16:42 ` Ingo Molnar
2011-04-29 18:01 ` Vince Weaver
2011-04-29 18:57 ` Ingo Molnar
2011-04-30 2:17 ` Vince Weaver
2011-04-30 7:14 ` Pekka Enberg
2011-04-30 20:47 ` Vince Weaver
2011-05-01 18:31 ` Ingo Molnar
2011-04-30 8:11 ` Borislav Petkov [this message]
2011-04-30 21:03 ` Vince Weaver
2011-05-09 11:01 ` stephane eranian
2011-05-10 9:35 ` Ingo Molnar
2011-04-29 22:16 ` Borislav Petkov
2011-04-30 1:49 ` Vince Weaver
2011-04-30 1:53 ` Vince Weaver
2011-04-30 20:58 ` Vince Weaver
2011-04-30 21:09 ` Alan Cox
2011-04-29 17:17 ` Pekka Enberg
2011-04-29 17:25 ` Andi Kleen
2011-04-29 17:37 ` Pekka Enberg
2011-04-29 17:46 ` Vince Weaver
2011-04-29 17:59 ` Pekka Enberg
2011-04-29 17:42 ` Thomas Gleixner
2011-04-30 20:06 ` Corey Ashford
2011-05-01 4:45 ` Andi Kleen
2011-05-01 18:00 ` Ingo Molnar
2011-05-01 17:55 ` Ingo Molnar
2011-05-02 18:32 ` Corey Ashford
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