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Subject: Re: [PATCH v2 1/9] mm: Introduce Data Access MONitor (DAMON)
To:     sjpark@amazon.com, akpm@linux-foundation.org
Cc:     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
References: <20200128085742.14566-1-sjpark@amazon.com>
 <20200128085742.14566-2-sjpark@amazon.com>
From:   Randy Dunlap <rdunlap@infradead.org>
Message-ID: <95f6d1e3-7052-252e-1c29-f320e84df302@infradead.org>
Date:   Tue, 28 Jan 2020 08:06:38 -0800
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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'.

> +	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