linux-kernel - Re: [PATCH v2] clarify usage expectations for cnt32_to

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Message-ID: <20081109134303.GA10654@flint.arm.linux.org.uk>
Date:	Sun, 9 Nov 2008 13:43:03 +0000
From:	Russell King <rmk+lkml@....linux.org.uk>
To:	Nicolas Pitre <nico@....org>
Cc:	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	David Howells <dhowells@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	lkml <linux-kernel@...r.kernel.org>,
	Ralf Baechle <ralf@...ux-mips.org>, benh@...nel.crashing.org,
	paulus@...ba.org, David Miller <davem@...emloft.net>,
	Ingo Molnar <mingo@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Steven Rostedt <rostedt@...dmis.org>,
	linux-arch@...r.kernel.org
Subject: Re: [PATCH v2] clarify usage expectations for cnt32_to_63()

On Sun, Nov 09, 2008 at 08:34:23AM -0500, Nicolas Pitre wrote:
> Do you really have such instances where multiple call sites are needed?  
> That sounds even more confusing to me than the current model.  Better 
> encapsulate the usage of this macro within some function which has a 
> stronger meaning, such as sched_clock(), and call _that_ from multiple 
> sites instead.

What if sched_clock() is inline and uses cnt32_to_63()?  I think that's
where the problem lies.  Better add a comment that it shouldn't be used
inside another inline function.

-- 
Russell King
 Linux kernel    2.6 ARM Linux   - http://www.arm.linux.org.uk/
 maintainer of:
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