linux-kernel - Re: [v2 PATCH 1/3] panic: Change nmi

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Message-ID: <20160302132251.GH16954@pd.tnic>
Date:	Wed, 2 Mar 2016 14:22:51 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	Michal Hocko <mhocko@...nel.org>
Cc:	Hidehiro Kawai <hidehiro.kawai.ez@...achi.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Mingarelli <thomas.mingarelli@....com>,
	Wim Van Sebroeck <wim@...ana.be>,
	Corey Minyard <minyard@....org>,
	Javi Merino <javi.merino@....com>,
	linux-watchdog@...r.kernel.org,
	"Steven Rostedt (Red Hat)" <rostedt@...dmis.org>,
	Rasmus Villemoes <linux@...musvillemoes.dk>,
	linux-kernel@...r.kernel.org,
	Michal Nazarewicz <mina86@...a86.com>,
	Vitaly Kuznetsov <vkuznets@...hat.com>,
	HATAYAMA Daisuke <d.hatayama@...fujitsu.com>,
	Gobinda Charan Maji <gobinda.cemk07@...il.com>,
	Tejun Heo <tj@...nel.org>,
	Nicolas Iooss <nicolas.iooss_linux@....org>,
	openipmi-developer@...ts.sourceforge.net,
	Borislav Petkov <bp@...e.de>,
	Thomas Gleixner <tglx@...utronix.de>,
	Guenter Roeck <linux@...ck-us.net>
Subject: Re: [v2 PATCH 1/3] panic: Change nmi_panic from macro to function

On Wed, Mar 02, 2016 at 02:18:24PM +0100, Michal Hocko wrote:
> On Wed 02-03-16 19:36:26, Hidehiro Kawai wrote:
> [...]
> > +void nmi_panic(struct pt_regs *regs, const char *fmt, ...)
> 
> Do we really need vargs? All the current users seem to be OK with a
> simple string. This makes the code slightly more complicated without any
> apparent reason.

I was just wondering the exactly same thing...

The contra-arg would be that in case someone wants to do nmi_panic()
with more than a string, then it won't work.

The question is, does nmi_panic() even need to dump something more than
regs and a string?

-- 
Regards/Gruss,
    Boris.

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