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Subject: Re: [PATCH v3] mm, sysctl: make NUMA stats configurable
References: <1506579101-5457-1-git-send-email-kemi.wang@intel.com>
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From: kemi <kemi.wang@intel.com>
Message-ID: <1e3cb07f-84b0-47cd-b3de-542cd2f68320@intel.com>
Date: Tue, 10 Oct 2017 13:54:10 +0800
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To: Michal Hocko <mhocko@kernel.org>
Cc: "Luis R . Rodriguez" <mcgrof@kernel.org>, Kees Cook <keescook@chromium.org>, Andrew Morton <akpm@linux-foundation.org>, Jonathan Corbet <corbet@lwn.net>, Mel Gorman <mgorman@techsingularity.net>, Johannes Weiner <hannes@cmpxchg.org>, Christopher Lameter <cl@linux.com>, Sebastian Andrzej Siewior <bigeasy@linutronix.de>, Vlastimil Babka <vbabka@suse.cz>, Dave <dave.hansen@linux.intel.com>, Tim Chen <tim.c.chen@intel.com>, Andi Kleen <andi.kleen@intel.com>, Jesper Dangaard Brouer <brouer@redhat.com>, Ying Huang <ying.huang@intel.com>, Aaron Lu <aaron.lu@intel.com>, Proc sysctl <linux-fsdevel@vger.kernel.org>, Linux MM <linux-mm@kvack.org>, Linux Kernel <linux-kernel@vger.kernel.org>



On 2017a1'10ae??10ae?JPY 13:49, Michal Hocko wrote:
> On Mon 09-10-17 09:55:49, Michal Hocko wrote:
>> I haven't checked closely but what happens (or should happen) when you
>> do a partial read? Should you get an inconsistent results? Or is this
>> impossible?
> 
> Well, after thinking about it little bit more, partial reads are always
> inconsistent so this wouldn't add a new problem.
> 
> Anyway I still stand by my position that this sounds over-engineered and
> a simple 0/1 resp. on/off interface would be both simpler and safer. If
> anybody wants an auto mode it can be added later (as a value 2 resp.
> auto).
> 

It sounds good to me. If Andrew also tends to be a simple 0/1, I will submit
V4 patch for it. Thanks

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