linux-kernel - Re: [PATCH V2 2/3] perf/x86/intel/bm.c: Add Intel Branch Monitoring support

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Date:   Wed, 13 Dec 2017 08:21:47 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Megha Dey <megha.dey@...el.com>
Cc:     x86@...nel.org, linux-kernel@...r.kernel.org,
        linux-doc@...r.kernel.org, tglx@...utronix.de, mingo@...hat.com,
        hpa@...or.com, andriy.shevchenko@...ux.intel.com,
        kstewart@...uxfoundation.org, yu-cheng.yu@...el.com,
        len.brown@...el.com, gregkh@...uxfoundation.org, acme@...nel.org,
        alexander.shishkin@...ux.intel.com, jolsa@...hat.com,
        namhyung@...nel.org, vikas.shivappa@...ux.intel.com,
        pombredanne@...b.com, me@...ehuey.com, bp@...e.de,
        grzegorz.andrejczuk@...el.com, tony.luck@...el.com, corbet@....net,
        ravi.v.shankar@...el.com, Mark Rutland <mark.rutland@....com>
Subject: Re: [PATCH V2 2/3] perf/x86/intel/bm.c: Add Intel Branch Monitoring
 support

On Tue, Dec 12, 2017 at 03:08:00PM -0800, Megha Dey wrote:
> > 
> > There's work on the way to allow multiple HW PMUs. You'll either have to
> > wait for that or help in making that happen. What you do not do is
> > silently hack around it.
> 
> Could I get a pointer to the code implementing this?
> 

There isn't much code now; but it could be build on top of the stuff
here:

  git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git perf/core

It was mostly Mark I think who wanted this for big litte stuffs.