From: Peter Zijlstra <peterz@infradead.org>
To: Ingo Molnar <mingo@kernel.org>
Cc: 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
Date: Fri, 6 Jun 2014 10:17:26 +0200 [thread overview]
Message-ID: <20140606081726.GT6758@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <20140507164014.GB16034@gmail.com>
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On Wed, May 07, 2014 at 06:40:14PM +0200, Ingo Molnar wrote:
> Agreed, that's a very good point.
>
> Also, consider the following holistic argument, what is easier to
> achieve, when looking at an oops and not seeing the bug:
>
> - if only I had more information
> - if only I had less information
>
> we cannot put in information that we cut out, but it's not
> particularly hard to skip overly verbose information in most cases.
>
> Yes, there's a line to be drawn with verbosity: scroll-off is a
> concern when the oops does not make it to a log file.
>
> So I don't really know.
So it really stinks its so hard to debug laptops, and it doesn't help
the ehci debug dongle costs an arm and a leg.
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 :-(
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 :/
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next prev parent reply other threads:[~2014-06-06 8:17 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-26 18:10 Richard Yao
2014-04-27 12:08 ` Ingo Molnar
2014-04-27 19:42 ` Peter Zijlstra
2014-04-27 19:51 ` Richard Yao
2014-04-27 20:08 ` Linus Torvalds
2014-04-27 20:36 ` Richard Yao
2014-05-07 17:18 ` Ingo Molnar
2014-05-07 17:37 ` Peter Zijlstra
2014-04-30 21:56 ` Frederic Weisbecker
2014-05-07 16:40 ` Ingo Molnar
2014-06-06 8:17 ` Peter Zijlstra [this message]
2014-06-06 8:24 ` Borislav Petkov
2014-06-06 9:35 ` Peter Zijlstra
2014-06-07 3:08 ` H. Peter Anvin
2014-06-07 3:09 ` H. Peter Anvin
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