Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261475AbVEISN6 (ORCPT ); Mon, 9 May 2005 14:13:58 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261476AbVEISN6 (ORCPT ); Mon, 9 May 2005 14:13:58 -0400 Received: from gateway-1237.mvista.com ([12.44.186.158]:54265 "EHLO av.mvista.com") by vger.kernel.org with ESMTP id S261475AbVEISN5 (ORCPT ); Mon, 9 May 2005 14:13:57 -0400 Subject: Re: [PATCH] Priority Lists for the RT mutex From: Daniel Walker Reply-To: dwalker@mvista.com To: Ingo Molnar Cc: Oleg Nesterov , "Perez-Gonzalez, Inaky" , linux-kernel@vger.kernel.org In-Reply-To: <20050509091133.GA25959@elte.hu> References: <427C6D7D.878935F1@tv-sign.ru> <20050509073043.GA12976@elte.hu> <427F1A99.58BCCB88@tv-sign.ru> <20050509091133.GA25959@elte.hu> Content-Type: text/plain Organization: MontaVista Message-Id: <1115662430.16016.4.camel@dhcp153.mvista.com> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.2.2 (1.2.2-5) Date: 09 May 2005 11:13:50 -0700 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 731 Lines: 18 On Mon, 2005-05-09 at 02:11, Ingo Molnar wrote: > What would be nice to achieve are [low-cost] reductions of the size of > struct rt_mutex (in include/linux/rt_lock.h), upon which all other > PI-aware locking objects are based. Right now it's 9 words, of which > struct plist is 5 words. Would be nice to trim this to 8 words - which > would give a nice round size of 32 bytes on 32-bit. Why not make rt_mutex->wait_lock a pointer ? Set it to NULL and handle it in rt.c . Daniel - 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/