From: Jan Beulich <jbeulich@suse.com>
To: Juergen Gross <jgross@suse.com>
Cc: "Stefano Stabellini" <sstabellini@kernel.org>,
"Julien Grall" <julien@xen.org>, "Wei Liu" <wl@xen.org>,
"Konrad Rzeszutek Wilk" <konrad.wilk@oracle.com>,
"George Dunlap" <George.Dunlap@eu.citrix.com>,
"Andrew Cooper" <andrew.cooper3@citrix.com>,
"Ian Jackson" <ian.jackson@eu.citrix.com>,
xen-devel@lists.xenproject.org,
"Roger Pau Monné" <roger.pau@citrix.com>
Subject: Re: [Xen-devel] [PATCH v2 1/2] xen: add config option to include failing condition in BUG_ON() message
Date: Tue, 14 Jan 2020 16:47:39 +0100 [thread overview]
Message-ID: <f1e82975-0789-68b8-691b-02f557c27400@suse.com> (raw)
In-Reply-To: <20200109134825.31482-2-jgross@suse.com>
On 09.01.2020 14:48, Juergen Gross wrote:
> --- a/xen/Kconfig.debug
> +++ b/xen/Kconfig.debug
> @@ -81,6 +81,12 @@ config PERF_ARRAYS
> ---help---
> Enables software performance counter array histograms.
>
> +config DEBUG_BUGVERBOSE
> + bool "Verbose BUG_ON messages"
> + default DEBUG
> + ---help---
> + In case a BUG_ON triggers additionally print the triggering
> + condition on the console.
>
> config VERBOSE_DEBUG
While I can see reasons to put this here, doing so means the option
will be unavailable in non-EXPERT release builds. Is it intended to
be that way?
> --- a/xen/include/xen/lib.h
> +++ b/xen/include/xen/lib.h
> @@ -8,7 +8,12 @@
> #include <xen/string.h>
> #include <asm/bug.h>
>
> +#define BUG_ON_VERBOSE(p) do { if (unlikely(p)) BUG_VERBOSE(#p); } while (0)
> +#ifdef CONFIG_DEBUG_BUGVERBOSE
> +#define BUG_ON(p) BUG_ON_VERBOSE(p)
Looks like this will fail to build on Arm? Also - any particular
reason for the introduction of the separate BUG_ON_VERBOSE(),
when BUG_ON() could directly use BUG_VERBOSE()? I don't think we
want to encourage use of BUG_ON_VERBOSE() elsewhere ...
Jan
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next prev parent reply other threads:[~2020-01-14 15:48 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-09 13:48 [Xen-devel] [PATCH v2 0/2] xen: fix CONFIG_DEBUG_LOCKS Juergen Gross
2020-01-09 13:48 ` [Xen-devel] [PATCH v2 1/2] xen: add config option to include failing condition in BUG_ON() message Juergen Gross
2020-01-14 15:47 ` Jan Beulich [this message]
2020-01-14 16:00 ` Jürgen Groß
2020-01-14 16:12 ` Jan Beulich
2020-01-16 18:54 ` Andrew Cooper
2020-01-17 8:39 ` Jan Beulich
2020-01-17 8:53 ` Jürgen Groß
2020-01-09 13:48 ` [Xen-devel] [PATCH v2 2/2] xen: make CONFIG_DEBUG_LOCKS usable without CONFIG_DEBUG Juergen Gross
2020-01-09 14:13 ` Jan Beulich
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