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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1513805032.31684.2.camel@megha-Z97X-UD7-TH>
Date:   Wed, 20 Dec 2017 13:23:52 -0800
From:   Megha Dey <megha.dey@...el.com>
To:     Peter Zijlstra <peterz@...radead.org>
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 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.