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From: <sjpark@amazon.com>
To: Randy Dunlap <rdunlap@infradead.org>
Cc: <sjpark@amazon.com>, <akpm@linux-foundation.org>,
	SeongJae Park <sjpark@amazon.de>, <sj38.park@gmail.com>,
	<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>
Subject: Re: Re: [PATCH v2 1/9] mm: Introduce Data Access MONitor (DAMON)
Date: Tue, 28 Jan 2020 17:09:15 +0100
Message-ID: <20200128160915.25653-1-sjpark@amazon.com> (raw)
In-Reply-To: <95f6d1e3-7052-252e-1c29-f320e84df302@infradead.org> (raw)

On Tue, 28 Jan 2020 08:06:38 -0800 Randy Dunlap <rdunlap@infradead.org> wrote:

> On 1/28/20 12:57 AM, sjpark@amazon.com wrote:
> > diff --git a/mm/Kconfig b/mm/Kconfig
> > index ab80933be65f..144fb916aa8b 100644
> > --- a/mm/Kconfig
> > +++ b/mm/Kconfig
> > @@ -739,4 +739,16 @@ config ARCH_HAS_HUGEPD
> >  config MAPPING_DIRTY_HELPERS
> >          bool
> >  
> > +config DAMON
> > +	tristate "Data Access Monitor"
> > +	depends on MMU
> > +	default y
> 
> Might be lightweight but still should not default to 'y'.

Good point, will default to 'n' in next spin.


Thanks,
SeongJae Park

> 
> > +	help
> > +	  Provides data access monitoring.
> > +
> > +	  DAMON is a kernel module that allows users to monitor the actual
> > +	  memory access pattern of specific user-space processes.  It aims to
> > +	  be 1) accurate enough to be useful for performance-centric domains,
> > +	  and 2) sufficiently light-weight so that it can be applied online.
> > +
> >  endmenu
> 
> thanks.
> -- 
> ~Randy
> 


  reply index

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-28  8:57 [PATCH v2 0/9] " sjpark
2020-01-28  8:57 ` [PATCH v2 1/9] mm: " sjpark
2020-01-28 16:06   ` Randy Dunlap
2020-01-28 16:09     ` sjpark [this message]
2020-01-30 23:58   ` Brendan Higgins
2020-01-31  4:38     ` SeongJae Park
2020-01-28  8:57 ` [PATCH v2 2/9] mm/damon: Implement region based sampling sjpark
2020-01-28  8:57 ` [PATCH v2 3/9] mm/damon: Adaptively adjust regions sjpark
2020-01-28  8:57 ` [PATCH v2 4/9] mm/damon: Apply dynamic memory mapping changes sjpark
2020-01-28  8:59 ` [PATCH v2 5/9] mm/damon: Add debugfs interface sjpark
2020-01-28  9:00 ` [PATCH v2 6/9] mm/damon: Add minimal user-space tools sjpark
2020-01-31  0:02   ` Brendan Higgins
2020-01-31  4:44     ` SeongJae Park
2020-02-01  8:52       ` SeongJae Park
2020-01-28  9:00 ` [PATCH v2 7/9] Documentation/admin-guide/mm: Add a document for DAMON sjpark
2020-01-28  9:01 ` [PATCH v2 8/9] mm/damon: Add kunit tests sjpark
2020-01-31  0:14   ` Brendan Higgins
2020-01-31  4:55     ` SeongJae Park
2020-01-28  9:01 ` [PATCH v2 9/9] mm/damon: Add a tracepoint for result buffer writing sjpark
2020-01-28 10:20 ` [PATCH v2 0/9] Introduce Data Access MONitor (DAMON) Qian Cai
2020-01-28 10:49   ` sjpark
2020-01-28 11:20     ` Qian Cai
2020-01-28 12:00       ` sjpark
2020-01-29 12:56         ` Peter Zijlstra
2020-01-29 14:37           ` sjpark
2020-01-29 18:07             ` Peter Zijlstra
2020-01-29 19:06               ` SeongJae Park
2020-01-29 19:36                 ` Peter Zijlstra
2020-01-29 19:59                   ` SeongJae Park

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