linux-kernel - Re: [PATCH -v9][RFC] mutex: implement adaptive spinning

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Message-ID: <20090113190142.GA2508@elte.hu>
Date:	Tue, 13 Jan 2009 20:01:42 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Gregory Haskins <ghaskins@...ell.com>,
	Matthew Wilcox <matthew@....cx>,
	Andi Kleen <andi@...stfloor.org>,
	Chris Mason <chris.mason@...cle.com>,
	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>,
	Dmitry Adamushko <dmitry.adamushko@...il.com>
Subject: Re: [PATCH -v9][RFC] mutex: implement adaptive spinning


* Linus Torvalds <torvalds@...ux-foundation.org> wrote:

> 
> 
> On Tue, 13 Jan 2009, Ingo Molnar wrote:
> > 
> > below is the v8 -> v10 delta patch - for all who'd like to review the 
> > changes.
> 
> Hmm. This does seem to indicate that v10 lost many of the preempt 
> changes. Probably because Peter went back to v7 to create it.
> 
> I also wonder about the timing numbers - the numbers were probably done 
> with some random version and then not re-done, so the commit message is 
> not necessarily "sane" in that respect - the timings quoted don't 
> necessarily match the code committed.

yeah - i didnt take care with v10's commit log because it will be redone 
with a structural splitup anyway, instead of the current time based 
history.

	Ingo
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