From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932478AbXCJJvj (ORCPT ); Sat, 10 Mar 2007 04:51:39 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932080AbXCJJvi (ORCPT ); Sat, 10 Mar 2007 04:51:38 -0500 Received: from mtagate6.uk.ibm.com ([195.212.29.139]:25894 "EHLO mtagate6.uk.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751320AbXCJJvh (ORCPT ); Sat, 10 Mar 2007 04:51:37 -0500 Subject: Re: [PATCH] Complain about missing system calls. From: Martin Schwidefsky Reply-To: schwidefsky@de.ibm.com To: Andi Kleen Cc: Benjamin Herrenschmidt , David Woodhouse , akpm@osdl.org, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org, sam@ravnborg.org, rmk@arm.linux.org.uk In-Reply-To: <200703091954.13982.ak@suse.de> References: <1173394873.3461.510.camel@pmac.infradead.org> <1173458854.24454.27.camel@localhost.localdomain> <200703091954.13982.ak@suse.de> Content-Type: text/plain; charset=ISO-8859-1 Organization: IBM Corporation Date: Sat, 10 Mar 2007 10:51:36 +0100 Message-Id: <1173520296.7128.9.camel@localhost> Mime-Version: 1.0 X-Mailer: Evolution 2.6.3 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2007-03-09 at 19:54 +0100, Andi Kleen wrote: > > We need additional gunk for syscalls that can be called from SPEs on > > cell > > Can that gunk not be auto generated? > > I know s390 does in some cases, but it looks quite auto generatable to me. The system call tables and the compat wrapper are all manually created. If we manage to get the prototypes for the system calls in a parseable format at least the compat wrappers could be auto-generated. I see two pitfalls: 1) some compat system calls are directly wired to the system call table while others need the compat_wrapper detour, 2) override of system calls with "meta" system calls like sys_socket or sys_ipc. -- blue skies, IBM Deutschland Entwicklung GmbH Martin Vorsitzender des Aufsichtsrats: Johann Weihen Geschäftsführung: Herbert Kircher Martin Schwidefsky Sitz der Gesellschaft: Böblingen Linux on zSeries Registergericht: Amtsgericht Stuttgart, Development HRB 243294 "Reality continues to ruin my life." - Calvin.