From: "H. Peter Anvin" <hpa-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
To: Ingo Molnar <mingo-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: Linux-sh list <linux-sh-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Catalin Marinas <Catalin.Marinas-5wv7dgnIgG8@public.gmane.org>,
Benjamin Herrenschmidt
<benh-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>,
Chen Gang <gang.chen-bOixZGp5f+dBDgjK7y7TUQ@public.gmane.org>,
Heiko Carstens
<heiko.carstens-tA70FqPdS9bQT0dZR+AlfA@public.gmane.org>,
"paulus-eUNUBHrolfbYtjvyW6yDsg@public.gmane.org"
<paulus-eUNUBHrolfbYtjvyW6yDsg@public.gmane.org>,
Michel Lespinasse
<walken-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>,
Hans-Christian Egtvedt
<egtvedt-BrfabpQBY5qlHtIdYg32fQ@public.gmane.org>,
Linux-Arch <linux-arch-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
linux-s390-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Russell King - ARM Linux
<linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org>,
uml-devel
<user-mode-linux-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>,
Yoshinori Sato
<ysato-Rn4VEauK+AKRv+LV9MX5uooqe+aC9MnS@public.gmane.org>,
Richard Weinberger <richard-/L3Ra7n9ekc@public.gmane.org>,
Helge Deller <deller-Mmb7MZpHnFY@public.gmane.org>,
the arch/x86 maintainers
<x86-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
"James E.J. Bottomley"
<jejb-6jwH94ZQLHl74goWV3ctuw@public.gmane.org>,
"mingo-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org"
<mingo-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
Geert
Subject: Re: [PATCH] arch: configuration, deleting 'CONFIG_BUG' since always need it.
Date: Tue, 28 May 2013 07:55:32 -0700 [thread overview]
Message-ID: <51A4C564.4040301@zytor.com> (raw)
In-Reply-To: <20130528081910.GA29557-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
On 05/28/2013 01:19 AM, Ingo Molnar wrote:
>
> So I think the same principle applies to it as to any other debugging
> code: it's fine to be able to turn debugging off. It's a performance
> versus kernel robustness/determinism trade-off.
>
I suspect, rather, that BUG() should turn into a trap (or jump to a
death routine) under any circumstances. The one thing that can be
omitted for small configurations are the annotations, which only serve
to output a more human-readable error message.
-hpa
next prev parent reply other threads:[~2013-05-28 14:55 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-23 7:57 [PATCH] arch: configuration, deleting 'CONFIG_BUG' since always need it Chen Gang
2013-05-23 7:57 ` Chen Gang
2013-05-23 8:40 ` Geert Uytterhoeven
2013-05-23 8:54 ` Arnd Bergmann
[not found] ` <CAMuHMdU7QuzgmWCH145p8PVebBzPo8DBAvbY+0AZa2cmGXmRHw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-05-23 9:05 ` Russell King - ARM Linux
2013-05-23 9:12 ` Geert Uytterhoeven
2013-05-23 9:39 ` Arnd Bergmann
[not found] ` <201305231139.38233.arnd-r2nGTMty4D4@public.gmane.org>
2013-05-23 10:04 ` Russell King - ARM Linux
2013-05-23 10:41 ` Chen Gang
2013-05-23 10:59 ` Arnd Bergmann
[not found] ` <201305231259.43750.arnd-r2nGTMty4D4@public.gmane.org>
2013-05-23 11:19 ` Chen Gang
2013-05-23 11:24 ` Russell King - ARM Linux
[not found] ` <20130523112401.GO18614-l+eeeJia6m9vn6HldHNs0ANdhmdF6hFW@public.gmane.org>
2013-05-23 12:09 ` Arnd Bergmann
2013-05-23 12:50 ` Russell King - ARM Linux
2013-05-23 14:10 ` Geert Uytterhoeven
2013-05-24 2:13 ` Chen Gang
2013-05-24 4:17 ` Chen Gang
2013-05-26 4:43 ` [PATCH v2] arch: configuration issue, random return value when disable 'CONFIG_BUG' Chen Gang
2013-05-28 8:19 ` [PATCH] arch: configuration, deleting 'CONFIG_BUG' since always need it Ingo Molnar
2013-05-28 10:25 ` Chen Gang
2013-05-28 14:49 ` Arnd Bergmann
[not found] ` <20130528081910.GA29557-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2013-05-28 14:55 ` H. Peter Anvin [this message]
2013-05-28 15:43 ` Arnd Bergmann
[not found] ` <201305281743.52649.arnd-r2nGTMty4D4@public.gmane.org>
2013-05-28 16:06 ` H. Peter Anvin
[not found] ` <51A4D618.3080208-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
2013-05-28 17:20 ` Arnd Bergmann
2013-05-23 10:09 ` Eric W. Biederman
[not found] ` <878v369fdd.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2013-05-23 10:29 ` Russell King - ARM Linux
2013-05-23 10:05 ` Chen Gang
2013-05-24 5:59 ` Eric W. Biederman
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