linux-kernel - Re: [PATCH v2 7/7] proc/kcore: add vmcoreinfo note to /proc/kcore

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Message-ID: <20180718032742.GC29351@vader>
Date:   Tue, 17 Jul 2018 20:27:42 -0700
From:   Omar Sandoval <osandov@...ndov.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        Alexey Dobriyan <adobriyan@...il.com>,
        Eric Biederman <ebiederm@...ssion.com>,
        James Morse <james.morse@....com>,
        Bhupesh Sharma <bhsharma@...hat.com>, kernel-team@...com
Subject: Re: [PATCH v2 7/7] proc/kcore: add vmcoreinfo note to /proc/kcore

On Tue, Jul 17, 2018 at 07:44:21PM -0700, Andrew Morton wrote:
> On Thu, 12 Jul 2018 17:09:39 -0700 Omar Sandoval <osandov@...ndov.com> wrote:
> 
> > From: Omar Sandoval <osandov@...com>
> > 
> > The vmcoreinfo information is useful for runtime debugging tools, not
> > just for crash dumps. A lot of this information can be determined by
> > other means, but this is much more convenient.
> > 
> 
> What effect does this have upon the overall size of the dump file?

About 2 kB on my machine, and no more than one page + the few bytes of
extra headers.