linux-kernel - Re: [PATCH V4] mm: Add sysfs interface to dump each node's zonelist information

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Message-ID: <57D1C914.9090403@intel.com>
Date:   Thu, 8 Sep 2016 13:24:52 -0700
From:   Dave Hansen <dave.hansen@...el.com>
To:     Anshuman Khandual <khandual@...ux.vnet.ibm.com>,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Cc:     akpm@...ux-foundation.org
Subject: Re: [PATCH V4] mm: Add sysfs interface to dump each node's zonelist
 information

On 09/07/2016 07:46 PM, Anshuman Khandual wrote:
> after memory or node hot[un]plug is desirable. This change adds one
> new sysfs interface (/sys/devices/system/memory/system_zone_details)
> which will fetch and dump this information.

Doesn't this violate the "one value per file" sysfs rule?  Does it
belong in debugfs instead?

I also really question the need to dump kernel addresses out, filtered
or not.  What's the point?