linux-kernel - Re: [PATCH -v7][RFC]: mutex: implement adaptive spinning

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Date:	Sat, 10 Jan 2009 00:53:42 +0000
From:	Jamie Lokier <jamie@...reable.org>
To:	Harvey Harrison <harvey.harrison@...il.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>,
	Andi Kleen <andi@...stfloor.org>,
	Chris Mason <chris.mason@...cle.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	paulmck@...ux.vnet.ibm.com, Gregory Haskins <ghaskins@...ell.com>,
	Matthew Wilcox <matthew@....cx>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>,
	linux-btrfs <linux-btrfs@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Nick Piggin <npiggin@...e.de>,
	Peter Morreale <pmorreale@...ell.com>,
	Sven Dietrich <SDietrich@...ell.com>
Subject: Re: [PATCH -v7][RFC]: mutex: implement adaptive spinning

Harvey Harrison wrote:
> Oh yeah, and figure out what actually breaks on alpha such that they added
> the following (arch/alpha/include/asm/compiler.h)
> 
> #ifdef __KERNEL__
> /* Some idiots over in <linux/compiler.h> thought inline should imply
>    always_inline.  This breaks stuff.  We'll include this file whenever
>    we run into such problems.  */

Does "always_inline" complain if the function isn't inlinable, while
"inline" allows it?  That would explain the alpha comment.

-- Jamie
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