linux-kernel - Re: Support Intel uncore event lists v4

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Date:   Wed, 11 Jan 2017 19:53:44 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     Andi Kleen <andi@...stfloor.org>
Cc:     acme@...nel.org, jolsa@...nel.org, mingo@...nel.org,
        linux-kernel@...r.kernel.org
Subject: Re: Support Intel uncore event lists v4

On Mon, Jan 09, 2017 at 05:33:26PM -0800, Andi Kleen wrote:
> This adds uncore support on top of the recently merged JSON event list
> infrastructure for core events. Uncore is everything outside the core,
> including memory controllers, PCI, interconnect etc.
> 
> Uncore is more complicated to handle than core events because it uses
> many duplicated PMUs, which leads to long event lists and verbose duplicated
> outputs. 
> 
> In fact previously it was nearly unusable for many cases without special 
> tools to generate event list and aggregate data (such as 
> https://github.com/andikleen/pmu-tools/tree/master/ucevent)
> 
> With this patchkit we add:
> - Basic support for uncore events in JSON events
> - Support aliases that get duplicated over many PMUs transparently
> - Support summing up duplicated PMUs per socket
> - Support extending the perf stat builtin metrics with simple expressions
> specified in the event list.
> 
> So far mainly servers are supported. Also this is not using full event lists
> (which are full of very obscure events) but only for a smaller subset of
> curated useful and understandable metrics.
> 
> The actual event lists are not posted, but available at
> git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-misc perf/intel-uncore-json-files-3
> 
> The code is available here
> git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-misc perf/builtin-json-22
> 
> v1: Initial post
> v2: Address review feedback. See changelog in commits.
> v3: Repost. Rebase to latest tree.
> v4: Rebase. Change DividedBy to generic simple expression parser.
> Fix refactoring problem that broke git bisect.
> Address review feedback.
>

what's the difference to the post from Jan 03?

jirka