linux-kernel - Re: Re: Re: Re: Re: [PATCH v2 0/9] Introduce Data Access MONitor (DAMON)

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Message-Id: <20200129195907.4589-1-sj38.park@gmail.com>
Date:   Wed, 29 Jan 2020 20:59:07 +0100
From:   SeongJae Park <sj38.park@...il.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     SeongJae Park <sj38.park@...il.com>, sjpark@...zon.com,
        akpm@...ux-foundation.org, SeongJae Park <sjpark@...zon.de>,
        acme@...nel.org, amit@...nel.org, brendan.d.gregg@...il.com,
        corbet@....net, dwmw@...zon.com, mgorman@...e.de,
        rostedt@...dmis.org, kirill@...temov.name,
        brendanhiggins@...gle.com, colin.king@...onical.com,
        minchan@...nel.org, vdavydov.dev@...il.com, linux-mm@...ck.org,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        Ingo Molnar <mingo@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>
Subject: Re: Re: Re: Re: Re: [PATCH v2 0/9] Introduce Data Access MONitor (DAMON)

On Wed, 29 Jan 2020 20:36:16 +0100 Peter Zijlstra <peterz@...radead.org> wrote:

> On Wed, Jan 29, 2020 at 08:06:45PM +0100, SeongJae Park wrote:
> > > Perf can do address based sampling of memops, I suspect you can create
> > > something using that.
> > 
> > If you're saying implementing DAMON in 'perf mem', I think it would conflict
> > with abovely explained DAMON's goal.
> > 
> > Else, if you're saying it would be the right place to handle the DAMON
> > generated data, I agree, thank you for pointing me that.  Will keep it in mind
> > while shaping the interface of DAMON.
> 
> I'm saying it might be able to provide the data you need; without damon.
> 
> Might; because I'm not entirely sure what you're looking for, nor
> exactly what events we have that provide address information.

Thank you for further clarifying this :)  Will also address this concern in
next spin.


Thanks,
SeongJae Park