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Message-ID: <1513805032.31684.2.camel@megha-Z97X-UD7-TH>
Subject: Re: [PATCH V2 2/3] perf/x86/intel/bm.c: Add Intel Branch Monitoring
 support
From: Megha Dey <megha.dey@intel.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: x86@kernel.org, linux-kernel@vger.kernel.org,
        linux-doc@vger.kernel.org, tglx@linutronix.de, mingo@redhat.com,
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        grzegorz.andrejczuk@intel.com, tony.luck@intel.com, corbet@lwn.net,
        ravi.v.shankar@intel.com, Mark Rutland <mark.rutland@arm.com>
Date: Wed, 20 Dec 2017 13:23:52 -0800
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On Wed, 2017-12-13 at 08:21 +0100, Peter Zijlstra wrote:
> 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.

Could you give us an estimate on the amount of time it could take to
implement this?

I am not sure what the current status is or if Mark has been working on
it.