Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932425AbVLNLYt (ORCPT ); Wed, 14 Dec 2005 06:24:49 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932093AbVLNLYt (ORCPT ); Wed, 14 Dec 2005 06:24:49 -0500 Received: from clock-tower.bc.nu ([81.2.110.250]:16778 "EHLO lxorguk.ukuu.org.uk") by vger.kernel.org with ESMTP id S932283AbVLNLYs (ORCPT ); Wed, 14 Dec 2005 06:24:48 -0500 Subject: Re: [PATCH 1/19] MUTEX: Introduce simple mutex implementation From: Alan Cox To: Arjan van de Ven Cc: David Howells , Christopher Friesen , torvalds@osdl.org, akpm@osdl.org, hch@infradead.org, matthew@wil.cx, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org In-Reply-To: <1134558507.2894.22.camel@laptopd505.fenrus.org> References: <439EDC3D.5040808@nortel.com> <1134479118.11732.14.camel@localhost.localdomain> <3874.1134480759@warthog.cambridge.redhat.com> <15167.1134488373@warthog.cambridge.redhat.com> <1134490205.11732.97.camel@localhost.localdomain> <1134556187.2894.7.camel@laptopd505.fenrus.org> <1134558188.25663.5.camel@localhost.localdomain> <1134558507.2894.22.camel@laptopd505.fenrus.org> Content-Type: text/plain Content-Transfer-Encoding: 7bit Date: Wed, 14 Dec 2005 11:24:30 +0000 Message-Id: <1134559470.25663.22.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.2.3 (2.2.3-2.fc4) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 753 Lines: 18 On Mer, 2005-12-14 at 12:08 +0100, Arjan van de Ven wrote: > 1) the BKL change hasn't finished, and we're 5 years down the line. API > changes done gradual tend to take forever in practice, esp if there's no > "compile" incentive for people to fix things. This isn't a "fix" however, its merely a performance tweak. Drivers using the old API are not a problem because a) The old API is needed long term for true counting sem users b) Its a minor performance hit at most Thats rather different to the BKL - 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/