linux-kernel - perf PMU support for Haswell: Extended functionality v1

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Message-Id: <1359153192-13409-1-git-send-email-andi@firstfloor.org>
Date:	Fri, 25 Jan 2013 14:32:54 -0800
From:	Andi Kleen <andi@...stfloor.org>
To:	mingo@...nel.org
Cc:	linux-kernel@...r.kernel.org, a.p.zijlstra@...llo.nl,
	akpm@...ux-foundation.org, acme@...hat.com, eranian@...gle.com,
	jolsa@...hat.com, namhyung@...nel.org
Subject: perf PMU support for Haswell: Extended functionality v1

This is based on v7 of the earlier combined Haswell PMU patchkit.
The basic functionality has moved into a separate patchkit.
These patches implement more advanced functionality. Most
of the functionality is related to TSX.

This applies on top of the basic hsw/pmu4-basics patchkit posted
separately.

Some of this touches similar areas as Stephane's patchkit, with
some shared patches too.

Available at 
git://git.kernel.org/pub/scm/linux/kernel/ak/linux-misc.git hsw/pmu4

High level overview:

- Easy high level TSX measurement in perf stat -T
- Transaction events and attributes implemented with sysfs enumeration
- Export arch perfmon events in sysfs 
- Generic weightend profiling for memory latency and transaction abort costs.
- Support for address profiling
- KVM support to do basic TSX profiling from guests
- Support for filtering/displaying transaction abort types based on 
PEBS information

For more details on the Haswell PMU please see the SDM. For more details on TSX
please see http://halobates.de/adding-lock-elision-to-linux.pdf

Some of the added features could be added to older CPUs too. I plan
to do this, but in separate patches.

Open:
- Weight sorting does not work (see thread), not a show stopper.

-Andi
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