linux-kernel - Re: [git pull] scheduler fixes

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Message-ID: <20080511151909.GA3887@elte.hu>
Date:	Sun, 11 May 2008 17:19:09 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Matthew Wilcox <matthew@....cx>
Cc:	Sven Wegener <sven.wegener@...aler.net>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"Zhang, Yanmin" <yanmin_zhang@...ux.intel.com>,
	Andi Kleen <andi@...stfloor.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Alexander Viro <viro@....linux.org.uk>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [git pull] scheduler fixes


* Matthew Wilcox <matthew@....cx> wrote:

> > exactly what usecase is that? Perhaps it could be converted to an 
> > atomic counter + the wait_event() APIs.
> 
> Effectively, it's a completion.  It just works better with staggered 
> wakeups than it does with the naive completion.

So why not transform it to real completions instead? And if our current 
'struct completion' abstraction is insufficient for whatever reason, why 
not extend that instead?

	Ingo
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