Re: [PATCH v3 2/2] mm: be more verbose about zonelist initialization
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- To: Michal Hocko <mhocko@xxxxxxxxxx>, linux-mm@xxxxxxxxx
- Subject: Re: [PATCH v3 2/2] mm: be more verbose about zonelist initialization
- From: Dave Hansen <dave.hansen@xxxxxxxxx>
- Date: Wed, 13 Feb 2019 08:14:50 -0800
- Cc: Pingfan Liu <kernelfans@xxxxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, x86@xxxxxxxxxx, Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>, Michael Ellerman <mpe@xxxxxxxxxxxxxx>, Tony Luck <tony.luck@xxxxxxxxx>, linuxppc-dev@xxxxxxxxxxxxxxxx, linux-ia64@xxxxxxxxxxxxxxx, LKML <linux-kernel@xxxxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxx>, Michal Hocko <mhocko@xxxxxxxx>
- In-reply-to: <20190213094315.3504-1-mhocko@kernel.org>
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- References: <20190212095343.23315-3-mhocko@kernel.org> <20190213094315.3504-1-mhocko@kernel.org>
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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?
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