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Date: Fri, 6 Jun 2014 10:24:20 +0200
From: Borislav Petkov <bp@alien8.de>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@kernel.org>, Frederic Weisbecker <fweisbec@gmail.com>,
        Richard Yao <ryao@gentoo.org>, Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
        x86@kernel.org, Andrew Morton <akpm@linux-foundation.org>,
        Tejun Heo <tj@kernel.org>, Vineet Gupta <vgupta@synopsys.com>,
        Jesper Nilsson <jesper.nilsson@axis.com>, Jiri Slaby <jslaby@suse.cz>,
        linux-kernel@vger.kernel.org, kernel@gentoo.org,
        Brian Behlendorf <behlendorf1@llnl.gov>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Arnaldo Carvalho de Melo <acme@infradead.org>,
        Jiri Olsa <jolsa@redhat.com>
Subject: Re: [PATCH] x86/dumpstack: Walk frames when built with frame pointers
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On Fri, Jun 06, 2014 at 10:17:26AM +0200, Peter Zijlstra wrote:
> Hopefully the EFI pstore thing will work out, but I've already heard
> that can wear out very quickly and render your machine a brick :-(

And not only that - write speed is awfully low. I hear you might be ok
to record an oops or so. Continuous debug output, not so much.

> Me, I simply refuse to work on machines if they don't have a serial
> line, but in general that's not a tenable position I suppose :/

Well, with all the other crap they put in modern machines, how hard it
is to put a goddam stupid serial line out everywhere...? WTF do I need a
goddam adaptive keyboard and other idiotic bling-bling if I can't have a
simple serial line for debugging... Blergh.
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