linux-kernel - Re: [PATCH v23 11/15] tools: Introduce a minimal user-space tool for DAMON

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Date:   Wed, 23 Dec 2020 19:37:21 +0100
From:   SeongJae Park <sjpark@...zon.com>
To:     SeongJae Park <sjpark@...zon.com>
CC:     <akpm@...ux-foundation.org>, <Jonathan.Cameron@...wei.com>,
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Subject: Re: [PATCH v23 11/15] tools: Introduce a minimal user-space tool for DAMON

On Tue, 15 Dec 2020 12:54:44 +0100 SeongJae Park <sjpark@...zon.com> wrote:

> From: SeongJae Park <sjpark@...zon.de>
> 
> 'damon-dbgfs' provides simple user space interface for DAMON, but using
> the interface for complex usages could require annoying repetitive
> works.  Writing a user space data access monitoring applications on top
> of the debugfs interface and using the application would be better for
> such complex cases.
> 
> This commit introduces a reference implementation of such user space
> application built on top of the debugfs interface, namely 'DAMon
> Operator' (DAMO).  It contains a shallow wrapper python script of the
> debugfs interface and various visualization of the monitoring results
> convenient user interface.
> 
> Note that it is initially aimed to be used for minimal reference of the
> 'damon-dbgfs' interface and for debugging of the DAMON itself.
> 
> Signed-off-by: SeongJae Park <sjpark@...zon.de>
> ---
>  tools/damon/.gitignore    |   1 +
>  tools/damon/_damon.py     | 130 ++++++++++++++
>  tools/damon/_dist.py      |  35 ++++
>  tools/damon/_recfile.py   |  23 +++
>  tools/damon/bin2txt.py    |  67 +++++++
>  tools/damon/damo          |  37 ++++
>  tools/damon/heats.py      | 362 ++++++++++++++++++++++++++++++++++++++
>  tools/damon/nr_regions.py |  91 ++++++++++
>  tools/damon/record.py     | 135 ++++++++++++++
>  tools/damon/report.py     |  45 +++++
>  tools/damon/wss.py        | 100 +++++++++++
>  11 files changed, 1026 insertions(+)

I will drop this patch from the next version of this patchset, because this is
not the essential part but could only make the code review time consuming.  I
will post another DAMON RFC patchset for convenient user space usages including
this and the perf integration.