Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030491AbWAHHyV (ORCPT ); Sun, 8 Jan 2006 02:54:21 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030505AbWAHHyV (ORCPT ); Sun, 8 Jan 2006 02:54:21 -0500 Received: from ozlabs.org ([203.10.76.45]:18409 "EHLO ozlabs.org") by vger.kernel.org with ESMTP id S1030491AbWAHHyU (ORCPT ); Sun, 8 Jan 2006 02:54:20 -0500 Date: Sun, 8 Jan 2006 18:43:57 +1100 From: Anton Blanchard To: Andrew Morton Cc: Joel Schopp , jes@trained-monkey.org, rmk+lkml@arm.linux.org.uk, hch@infradead.org, linux-kernel@vger.kernel.org, ak@suse.de, torvalds@osdl.org, viro@ftp.linux.org.uk, linuxppc64-dev@ozlabs.org, mingo@elte.hu, nico@cam.org, oleg@tv-sign.ru, alan@lxorguk.ukuu.org.uk, arjan@infradead.org Subject: Re: PowerPC fastpaths for mutex subsystem Message-ID: <20060108074356.GM26499@krispykreme> References: <20060104144151.GA27646@elte.hu> <43BC5E15.207@austin.ibm.com> <20060105143502.GA16816@elte.hu> <43BD4C66.60001@austin.ibm.com> <20060105222106.GA26474@elte.hu> <43BDA672.4090704@austin.ibm.com> <20060106002919.GA29190@pb15.lixom.net> <43BFFF1D.7030007@austin.ibm.com> <20060107143722.25afd85d.akpm@osdl.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060107143722.25afd85d.akpm@osdl.org> User-Agent: Mutt/1.5.11 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 456 Lines: 12 > Doens't this mean that the sped-up mutexes are still slower than semaphores? Wasnt most of the x86 mutex gain a result of going from fair to unfair operation? The current ppc64 semaphores are unfair. Anton - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/