From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932424AbWGHAFZ (ORCPT ); Fri, 7 Jul 2006 20:05:25 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932428AbWGHAFY (ORCPT ); Fri, 7 Jul 2006 20:05:24 -0400 Received: from omx2-ext.sgi.com ([192.48.171.19]:10434 "EHLO omx2.sgi.com") by vger.kernel.org with ESMTP id S932424AbWGHAFS (ORCPT ); Fri, 7 Jul 2006 20:05:18 -0400 Date: Fri, 7 Jul 2006 17:05:06 -0700 (PDT) From: Christoph Lameter To: linux-kernel@vger.kernel.org Cc: Martin Bligh , Christoph Hellwig , Marcelo Tosatti , Arjan van de Ven , Nick Piggin , Christoph Lameter , Andi Kleen , KAMEZAWA Hiroyuki Message-Id: <20060708000506.3829.34340.sendpatchset@schroedinger.engr.sgi.com> In-Reply-To: <20060708000501.3829.25578.sendpatchset@schroedinger.engr.sgi.com> References: <20060708000501.3829.25578.sendpatchset@schroedinger.engr.sgi.com> Subject: [RFC 1/8] Add CONFIG_ZONE_DMA to all archesM Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Introduce CONFIG_ZONE_DMA CONFIG_ZONE_DMA can be defined in two ways depending on how an architecture handles ISA DMA. First when CONFIG_GENERIC_ISA_DMA is set by the arch then we know that the arch needs ZONE_DMA because ISA DMA devices are supported. The arch would need to be modified in order to allow switching ZONE_DMA off. Second, arches may use ZONE_DMA in an unknown way. We set CONFIG_ZONE_DMA for all arches that do not set CONFIG_GENERIC_ISA_DMA in order to insure backwards compatibility. The arches may later undefine ZONE_DMA if their arch code has been modified to not depend on ZONE_DMA. As a result of this patch CONFIG_ZONE_DMA should be defined for every arch. Signed-off-by: Christoph Lameter Index: linux-2.6.17-mm6/mm/Kconfig =================================================================== --- linux-2.6.17-mm6.orig/mm/Kconfig 2006-07-03 13:47:22.616084772 -0700 +++ linux-2.6.17-mm6/mm/Kconfig 2006-07-03 21:26:49.956038556 -0700 @@ -134,6 +134,10 @@ config SPLIT_PTLOCK_CPUS default "4096" if PARISC && !PA20 default "4" +config ZONE_DMA + def_bool y + depends on GENERIC_ISA_DMA + # # support for page migration # Index: linux-2.6.17-mm6/arch/ia64/Kconfig =================================================================== --- linux-2.6.17-mm6.orig/arch/ia64/Kconfig 2006-07-03 21:26:38.944998185 -0700 +++ linux-2.6.17-mm6/arch/ia64/Kconfig 2006-07-03 21:35:54.270151176 -0700 @@ -22,6 +22,10 @@ config 64BIT bool default y +config ZONE_DMA + bool + default y + config MMU bool default y Index: linux-2.6.17-mm6/arch/cris/Kconfig =================================================================== --- linux-2.6.17-mm6.orig/arch/cris/Kconfig 2006-07-03 13:47:12.502452440 -0700 +++ linux-2.6.17-mm6/arch/cris/Kconfig 2006-07-03 21:34:53.678182903 -0700 @@ -9,6 +9,10 @@ config MMU bool default y +config ZONE_DMA + bool + default y + config RWSEM_GENERIC_SPINLOCK bool default y Index: linux-2.6.17-mm6/arch/s390/Kconfig =================================================================== --- linux-2.6.17-mm6.orig/arch/s390/Kconfig 2006-07-03 13:47:13.887132430 -0700 +++ linux-2.6.17-mm6/arch/s390/Kconfig 2006-07-03 21:34:30.527266107 -0700 @@ -7,6 +7,10 @@ config MMU bool default y +config ZONE_DMA + bool + default y + config LOCKDEP_SUPPORT bool default y Index: linux-2.6.17-mm6/arch/xtensa/Kconfig =================================================================== --- linux-2.6.17-mm6.orig/arch/xtensa/Kconfig 2006-07-03 13:47:14.333393893 -0700 +++ linux-2.6.17-mm6/arch/xtensa/Kconfig 2006-07-03 21:37:26.980256509 -0700 @@ -7,6 +7,10 @@ config FRAME_POINTER bool default n +config ZONE_DMA + bool + default y + config XTENSA bool default y Index: linux-2.6.17-mm6/arch/h8300/Kconfig =================================================================== --- linux-2.6.17-mm6.orig/arch/h8300/Kconfig 2006-06-17 18:49:35.000000000 -0700 +++ linux-2.6.17-mm6/arch/h8300/Kconfig 2006-07-03 21:35:38.346328043 -0700 @@ -17,6 +17,10 @@ config SWAP bool default n +config ZONE_DMA + bool + default y + config FPU bool default n Index: linux-2.6.17-mm6/arch/v850/Kconfig =================================================================== --- linux-2.6.17-mm6.orig/arch/v850/Kconfig 2006-06-17 18:49:35.000000000 -0700 +++ linux-2.6.17-mm6/arch/v850/Kconfig 2006-07-03 21:37:04.602729732 -0700 @@ -10,6 +10,9 @@ mainmenu "uClinux/v850 (w/o MMU) Kernel config MMU bool default n +config ZONE_DMA + bool + default y config RWSEM_GENERIC_SPINLOCK bool default y Index: linux-2.6.17-mm6/arch/sh/Kconfig =================================================================== --- linux-2.6.17-mm6.orig/arch/sh/Kconfig 2006-07-03 13:47:13.975017619 -0700 +++ linux-2.6.17-mm6/arch/sh/Kconfig 2006-07-03 21:36:39.118949095 -0700 @@ -14,6 +14,10 @@ config SUPERH gaming console. The SuperH port has a home page at . +config ZONE_DMA + bool + default y + config RWSEM_GENERIC_SPINLOCK bool default y Index: linux-2.6.17-mm6/arch/frv/Kconfig =================================================================== --- linux-2.6.17-mm6.orig/arch/frv/Kconfig 2006-06-17 18:49:35.000000000 -0700 +++ linux-2.6.17-mm6/arch/frv/Kconfig 2006-07-03 21:35:16.328153984 -0700 @@ -6,6 +6,10 @@ config FRV bool default y +config ZONE_DMA + bool + default y + config RWSEM_GENERIC_SPINLOCK bool default y Index: linux-2.6.17-mm6/arch/m68knommu/Kconfig =================================================================== --- linux-2.6.17-mm6.orig/arch/m68knommu/Kconfig 2006-07-03 13:47:12.932113368 -0700 +++ linux-2.6.17-mm6/arch/m68knommu/Kconfig 2006-07-03 21:36:19.860370626 -0700 @@ -17,6 +17,10 @@ config FPU bool default n +config ZONE_DMA + bool + default y + config RWSEM_GENERIC_SPINLOCK bool default y