linux-kernel - Re: [PATCH v2 1/5] bug: When !CONFIG_BUG, simplify WARN_ON

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Message-Id: <201402261424.59875.arnd@arndb.de>
Date:	Wed, 26 Feb 2014 14:24:59 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Josh Triplett <josh@...htriplett.org>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/5] bug: When !CONFIG_BUG, simplify WARN_ON_ONCE and family

On Wednesday 26 February 2014, Josh Triplett wrote:
> When !CONFIG_BUG, WARN_ON and family become simple passthroughs of their
> condition argument; however, WARN_ON_ONCE and family still have
> conditions and a boolean to detect one-time invocation, even though the
> warning they'd emit doesn't exist.  Make the existing definitions
> conditional on CONFIG_BUG, and add definitions for !CONFIG_BUG that map
> to the passthrough versions of WARN and WARN_ON.
> 
> This saves 4.4k on a minimized configuration (smaller than
> allnoconfig), and 20.6k with defconfig plus CONFIG_BUG=n.
> 
> Signed-off-by: Josh Triplett <josh@...htriplett.org>

Acked-by: Arnd Bergmann <arnd@...db.de>
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