linux-kernel - Re: [PATCH] remove volatile from nmi.c

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Message-ID: <Pine.LNX.4.64.0607141040550.5623@g5.osdl.org>
Date:	Fri, 14 Jul 2006 10:41:58 -0700 (PDT)
From:	Linus Torvalds <torvalds@...l.org>
To:	Steven Rostedt <rostedt@...dmis.org>
cc:	Andrew Morton <akpm@...l.org>, Ingo Molnar <mingo@...e.hu>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] remove volatile from nmi.c



On Fri, 14 Jul 2006, Steven Rostedt wrote:
> 
> > 	endflag = 1;
> > 	smp_wmb();
> 
> This was what I originally wrote, and then I saw the set_wmb which made
> me think that it was the proper way to do things (why else is it
> there?). So if it shouldn't be used, then we should get rid of it or at
> least mark it deprecated, otherwise you have people like me thinking
> that we should use it.

Yeah, we should probably get rid of it. No need to even mark it 
deprecated, since nobody uses it anyway. 

At a minimum, I think we should not document it in the locking 
documentation, making people incorrectly think it might be a good idea.

Hmm? Andrew?

		Linus
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