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Date: Fri, 12 Nov 2010 14:30:22 +0100
From: Frederic Weisbecker <fweisbec@gmail.com>
To: Stephane Eranian <eranian@google.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>, Andi Kleen <andi@firstfloor.org>,
        Corey Ashford <cjashfor@linux.vnet.ibm.com>,
        Andi Kleen <ak@linux.intel.com>, linux-kernel@vger.kernel.org,
        mingo@elte.hu, acme@redhat.com, paulus <paulus@samba.org>
Subject: Re: [PATCH 2/3] perf: Add support for extra parameters for raw
	events
Message-ID: <20101112133019.GA5595@nowhere>
References: <4CDC3845.4030104@linux.intel.com> <4CDC4628.8020109@linux.vnet.ibm.com> <20101111194936.GJ18718@basil.fritz.box> <1289505587.2084.193.camel@laptop> <20101111201259.GL18718@basil.fritz.box> <1289507858.2084.195.camel@laptop> <20101112102748.GA8020@basil.fritz.box> <AANLkTi=idvNVyccD53Xwjp5mWfJb=S8UXekhXNqhzRPC@mail.gmail.com> <1289561817.2084.240.camel@laptop> <AANLkTinjzZnv8dzfKPzgGtRnk5C-XsAt=gyf_4G0+gf8@mail.gmail.com>
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On Fri, Nov 12, 2010 at 02:00:43PM +0100, Stephane Eranian wrote:
> On Fri, Nov 12, 2010 at 12:36 PM, Peter Zijlstra <a.p.zijlstra@chello.nl> wrote:
> > On Fri, 2010-11-12 at 11:49 +0100, Stephane Eranian wrote:
> >> The difficulty with PEBS-LL (load latency) is not so much the encoding of the
> >> latency. It is more how to expose the data back to user. You get a full PEBS
> >> record for each miss. So you get the PEBS machine state + data addr, miss
> >> latency, and data source (where did the line come from). We have already
> >> discussed how to expose machine state in general. I'll work on a patch for this.
> >
> > Frederic was working on this PERF_SAMPLE_REGS stuff as well for his copy
> > the stack top and let dwarfs go wild at it patches.
> >
> Ok, I'll talk to him again about this then.


Would you like me to respin this isolated chunk of my dwarf cfi unwinding patchset?
So that we can discuss the ABI.

Thanks.

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