linux-kernel - Re: [tip:core/urgent] WARN_ON_SMP(): Allow use in if() statements on UP

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Message-ID: <1301082788.14261.204.camel@gandalf.stny.rr.com>
Date:	Fri, 25 Mar 2011 15:53:08 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Alexey Dobriyan <adobriyan@...il.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>, mingo@...hat.com,
	hpa@...or.com, linux-kernel@...r.kernel.org,
	dvhart@...ux.intel.com, peterz@...radead.org,
	akpm@...ux-foundation.org, srostedt@...hat.com, tglx@...utronix.de,
	laijs@...fujitsu.com, mingo@...e.hu,
	linux-tip-commits@...r.kernel.org
Subject: Re: [tip:core/urgent] WARN_ON_SMP(): Allow use in if() statements
 on UP

On Fri, 2011-03-25 at 21:47 +0200, Alexey Dobriyan wrote:

> I always thought if (WARN_ON(x)) is confusing and should be banned.

I think that's the preferred method (I use it all the time).

	if (WARN_ON(blah))
		goto fail;

Better than:

	if (x) {
		WARN_ON(1);
		goto fail;
	}

-- Steve


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