Re: [PATCH 1/7] perf: introduce raw_type attribute to specify thetype of a raw sample

From: Ingo Molnar
Date: Thu May 20 2010 - 02:52:16 EST

* Corey Ashford <cjashfor@xxxxxxxxxxxxxxxxxx> wrote:

> [...]
> Have you looked at Lin Ming's patch series? I think it
> offers another way to support IBS and other
> arch-specific and off-chip PMUs in a more general way,
> though it's not quite fully-baked yet.

Robert, check out this thread on lkml:

[RFC][PATCH v2 06/11] perf: core, export pmus via sysfs

Here is Peter's post that describes the high level design:

And please help out Lin Ming with this work - we dont want
to add new, special-purpose ABI extensions for enumeration
purposes, it should be introduced using a new event_source
node via the sysfs enumeration.

Whether IBS fits that category is an open question -
ideally it should have similar high level usage as the
PEBS/LBR bits on Intel CPUs. (at least as far as tooling


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