Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Date:   Wed, 29 Jan 2020 20:36:16 +0100
From:   Peter Zijlstra <peterz@infradead.org>
To:     SeongJae Park <sj38.park@gmail.com>
Cc:     sjpark@amazon.com, akpm@linux-foundation.org,
        SeongJae Park <sjpark@amazon.de>, acme@kernel.org,
        amit@kernel.org, brendan.d.gregg@gmail.com, corbet@lwn.net,
        dwmw@amazon.com, mgorman@suse.de, rostedt@goodmis.org,
        kirill@shutemov.name, brendanhiggins@google.com,
        colin.king@canonical.com, minchan@kernel.org,
        vdavydov.dev@gmail.com, vdavydov@parallels.com, linux-mm@kvack.org,
        linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
        Ingo Molnar <mingo@redhat.com>,
        Mark Rutland <mark.rutland@arm.com>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Jiri Olsa <jolsa@redhat.com>,
        Namhyung Kim <namhyung@kernel.org>
Subject: Re: Re: Re: Re: [PATCH v2 0/9] Introduce Data Access MONitor (DAMON)
Message-ID: <20200129193616.GT14914@hirez.programming.kicks-ass.net>
References: <20200129180709.GS14879@hirez.programming.kicks-ass.net>
 <20200129190645.2137-1-sj38.park@gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20200129190645.2137-1-sj38.park@gmail.com>
User-Agent: Mutt/1.10.1 (2018-07-13)
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

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.