From mboxrd@z Thu Jan  1 00:00:00 1970
From: Dave Hansen <dave.hansen@intel.com>
Date: Wed, 13 Feb 2019 16:14:50 +0000
Subject: Re: [PATCH v3 2/2] mm: be more verbose about zonelist initialization
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References: <20190212095343.23315-3-mhocko@kernel.org>
 <20190213094315.3504-1-mhocko@kernel.org>
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To: Michal Hocko <mhocko@kernel.org>, linux-mm@kvack.org
Cc: Pingfan Liu <kernelfans@gmail.com>, Peter Zijlstra <peterz@infradead.org>, x86@kernel.org, Benjamin Herrenschmidt <benh@kernel.crashing.org>, Michael Ellerman <mpe@ellerman.id.au>, Tony Luck <tony.luck@intel.com>, linuxppc-dev@lists.ozlabs.org, linux-ia64@vger.kernel.org, LKML <linux-kernel@vger.kernel.org>, Ingo Molnar <mingo@elte.hu>, Michal Hocko <mhocko@suse.com>

On 2/13/19 1:43 AM, Michal Hocko wrote:
> 
> We have seen several bugs where zonelists have not been initialized
> properly and it is not really straightforward to track those bugs down.
> One way to help a bit at least is to dump zonelists of each node when
> they are (re)initialized.

Were you thinking of boot-time bugs and crashes, or just stuff going
wonky after boot?

We don't have the zonelists dumped in /proc anywhere, do we?  Would that
help?