Messages in this thread | | | Date | Fri, 12 Nov 2010 16:00:10 +0100 | Subject | Re: [PATCH 2/3] perf: Add support for extra parameters for raw events | From | Stephane Eranian <> |
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On Fri, Nov 12, 2010 at 2:30 PM, Frederic Weisbecker <fweisbec@gmail.com> wrote: > 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. > I'd like to see your proposed kernel API to expose machine state.
> Thanks. > >
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