From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from internal-mail-relay1.corp.sgi.com (internal-mail-relay1.corp.sgi.com [198.149.32.52]) by omx2.sgi.com (8.12.11/8.12.9/linux-outbound_gateway-1.1) with ESMTP id k8C14rUO011563 for ; Mon, 11 Sep 2006 18:04:53 -0700 Date: Mon, 11 Sep 2006 15:30:12 -0700 (PDT) From: Christoph Lameter Message-Id: <20060911223012.5032.53231.sendpatchset@schroedinger.engr.sgi.com> In-Reply-To: <20060911223001.5032.24593.sendpatchset@schroedinger.engr.sgi.com> References: <20060911223001.5032.24593.sendpatchset@schroedinger.engr.sgi.com> Subject: [PATCH 2/6] Introduce CONFIG_ZONE_DMA Sender: owner-linux-mm@kvack.org Return-Path: To: linux-mm@kvack.org Cc: Christoph Lameter List-ID: Introduce CONFIG_ZONE_DMA This patch simply defines CONFIG_ZONE_DMA for all arches. We later do special things with CONFIG_ZONE_DMA after the VM and an arch are prepared to work without ZONE_DMA. CONFIG_ZONE_DMA can be defined in two ways depending on how an architecture handles ISA DMA. First if CONFIG_GENERIC_ISA_DMA is set by the arch then we know that the arch needs ZONE_DMA because ISA DMA devices are supported. We can catch this in mm/Kconfig and do not need to modify arch code. 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 verified to not depend on ZONE_DMA. Signed-off-by: Christoph Lameter Index: linux-2.6.18-rc6-mm1/mm/Kconfig =================================================================== --- linux-2.6.18-rc6-mm1.orig/mm/Kconfig 2006-09-11 15:42:32.736665338 -0500 +++ linux-2.6.18-rc6-mm1/mm/Kconfig 2006-09-11 15:53:12.072397960 -0500 @@ -139,6 +139,10 @@ default "4096" if PARISC && !PA20 default "4" +config ZONE_DMA + def_bool y + depends on GENERIC_ISA_DMA + # # support for page migration # Index: linux-2.6.18-rc6-mm1/arch/ia64/Kconfig =================================================================== --- linux-2.6.18-rc6-mm1.orig/arch/ia64/Kconfig 2006-09-11 15:42:32.746431796 -0500 +++ linux-2.6.18-rc6-mm1/arch/ia64/Kconfig 2006-09-11 15:53:12.089977582 -0500 @@ -22,6 +22,10 @@ bool default y +config ZONE_DMA + bool + default y + config MMU bool default y Index: linux-2.6.18-rc6-mm1/arch/cris/Kconfig =================================================================== --- linux-2.6.18-rc6-mm1.orig/arch/cris/Kconfig 2006-09-11 15:42:32.754244962 -0500 +++ linux-2.6.18-rc6-mm1/arch/cris/Kconfig 2006-09-11 15:53:12.101697331 -0500 @@ -9,6 +9,10 @@ bool default y +config ZONE_DMA + bool + default y + config RWSEM_GENERIC_SPINLOCK bool default y Index: linux-2.6.18-rc6-mm1/arch/s390/Kconfig =================================================================== --- linux-2.6.18-rc6-mm1.orig/arch/s390/Kconfig 2006-09-11 15:42:32.764988066 -0500 +++ linux-2.6.18-rc6-mm1/arch/s390/Kconfig 2006-09-11 15:53:12.112440433 -0500 @@ -7,6 +7,10 @@ bool default y +config ZONE_DMA + bool + default y + config LOCKDEP_SUPPORT bool default y Index: linux-2.6.18-rc6-mm1/arch/xtensa/Kconfig =================================================================== --- linux-2.6.18-rc6-mm1.orig/arch/xtensa/Kconfig 2006-09-11 15:42:32.773777878 -0500 +++ linux-2.6.18-rc6-mm1/arch/xtensa/Kconfig 2006-09-11 15:53:12.124160181 -0500 @@ -7,6 +7,10 @@ bool default n +config ZONE_DMA + bool + default y + config XTENSA bool default y Index: linux-2.6.18-rc6-mm1/arch/h8300/Kconfig =================================================================== --- linux-2.6.18-rc6-mm1.orig/arch/h8300/Kconfig 2006-09-11 15:42:32.782567690 -0500 +++ linux-2.6.18-rc6-mm1/arch/h8300/Kconfig 2006-09-11 15:53:12.134903284 -0500 @@ -17,6 +17,10 @@ bool default n +config ZONE_DMA + bool + default y + config FPU bool default n Index: linux-2.6.18-rc6-mm1/arch/v850/Kconfig =================================================================== --- linux-2.6.18-rc6-mm1.orig/arch/v850/Kconfig 2006-09-11 15:42:32.791357502 -0500 +++ linux-2.6.18-rc6-mm1/arch/v850/Kconfig 2006-09-11 15:53:12.145646386 -0500 @@ -10,6 +10,9 @@ config MMU bool default n +config ZONE_DMA + bool + default y config RWSEM_GENERIC_SPINLOCK bool default y Index: linux-2.6.18-rc6-mm1/arch/sh/Kconfig =================================================================== --- linux-2.6.18-rc6-mm1.orig/arch/sh/Kconfig 2006-09-11 15:42:32.800147314 -0500 +++ linux-2.6.18-rc6-mm1/arch/sh/Kconfig 2006-09-11 15:53:12.158342780 -0500 @@ -14,6 +14,10 @@ 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-2.6.18-rc6-mm1/arch/frv/Kconfig =================================================================== --- linux-2.6.18-rc6-mm1.orig/arch/frv/Kconfig 2006-09-11 15:42:32.808937126 -0500 +++ linux-2.6.18-rc6-mm1/arch/frv/Kconfig 2006-09-11 15:53:12.171039174 -0500 @@ -6,6 +6,10 @@ bool default y +config ZONE_DMA + bool + default y + config RWSEM_GENERIC_SPINLOCK bool default y Index: linux-2.6.18-rc6-mm1/arch/m68knommu/Kconfig =================================================================== --- linux-2.6.18-rc6-mm1.orig/arch/m68knommu/Kconfig 2006-09-11 15:42:32.820656875 -0500 +++ linux-2.6.18-rc6-mm1/arch/m68knommu/Kconfig 2006-09-11 15:53:12.183735568 -0500 @@ -17,6 +17,10 @@ bool default n +config ZONE_DMA + bool + default y + config RWSEM_GENERIC_SPINLOCK bool default y -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. 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