Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 7 Mar 2002 07:50:29 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 7 Mar 2002 07:50:19 -0500 Received: from dell-paw-3.cambridge.redhat.com ([195.224.55.237]:14832 "HELO executor.cambridge.redhat.com") by vger.kernel.org with SMTP id ; Thu, 7 Mar 2002 07:50:09 -0500 Message-ID: <3C8761FF.A10E50D9@redhat.com> Date: Thu, 07 Mar 2002 12:50:07 +0000 From: Arjan van de Ven Reply-To: arjanv@redhat.com Organization: Red Hat, Inc X-Mailer: Mozilla 4.78 [en] (X11; U; Linux 2.4.9-26beta.16smp i686) X-Accept-Language: en MIME-Version: 1.0 To: Rusty Russell Cc: linux-kernel@vger.kernel.org Subject: Re: furwocks: Fast Userspace Read/Write Locks In-Reply-To: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Rusty Russell wrote: > > This is a userspace implementation of rwlocks on top of futexes. question: if rwlocks aren't actually slower in the fast path than futexes, would it make sense to only do the rw variant and in some userspace layer map "traditional" semaphores to write locks ? Saves half the implementation and testing.... - 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/