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

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Message-Id: <57D63CB2.8070003@linux.vnet.ibm.com>
Date:   Mon, 12 Sep 2016 10:57:14 +0530
From:   Anshuman Khandual <khandual@...ux.vnet.ibm.com>
To:     Dave Hansen <dave.hansen@...el.com>,
        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 09/09/2016 01:54 AM, Dave Hansen wrote:
> 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?

Yeah sure. Will make it a debugfs interface.

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

Hmm, thought it to be an additional information. But yes its additional
and can be dropped.