linux-kernel - Re: [PATCH 4/4] acpi: semaphore removal

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Message-Id: <1219779046.3797.12.camel@dhcp32.mvista.com>
Date:	Tue, 26 Aug 2008 12:30:46 -0700
From:	Daniel Walker <dwalker@...sta.com>
To:	Matthew Wilcox <matthew@....cx>
Cc:	Andi Kleen <ak@...ux.intel.com>, linux-kernel@...r.kernel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <peterz@...radead.org>,
	Len Brown <len.brown@...el.com>,
	Robert Moore <robert.moore@...el.com>,
	linux-acpi@...r.kernel.org
Subject: Re: [PATCH 4/4] acpi: semaphore removal

On Tue, 2008-08-26 at 13:13 -0600, Matthew Wilcox wrote:
> On Tue, Aug 26, 2008 at 11:59:49AM -0700, Daniel Walker wrote:
> > The semaphore usage in ACPI is more like completions. The ASL
> 
> Huh?  They are semaphores.  They're not 'more like completions' at all.

You can clearly make a completion out of a semaphore, but we have a
completion API .. ACPI is using locked semaphores, and essentially
re-making completions with the semaphore API..

Daniel

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