From: Christoph Lameter <clameter@sgi.com>
To: linux-arch@vger.kernel.org
Cc: Paul Mundt <lethal@linux-sh.org>,
Christoph Hellwig <hch@infradead.org>,
James Bottomley <James.Bottomley@SteelEye.com>,
Arjan van de Ven <arjan@infradead.org>,
linux-mm@kvack.org, Russell King <rmk@arm.linux.org.uk>,
Christoph Lameter <clameter@sgi.com>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Andi Kleen <ak@suse.de>
Subject: [PATCH 2/8] Introduce CONFIG_ZONE_DMA
Date: Mon, 18 Sep 2006 11:36:24 -0700 (PDT) [thread overview]
Message-ID: <20060918183624.19679.78159.sendpatchset@schroedinger.engr.sgi.com> (raw)
In-Reply-To: <20060918183614.19679.50359.sendpatchset@schroedinger.engr.sgi.com>
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 <clameter@sgi.com>
Index: linux-2.6.18-rc6-mm2/mm/Kconfig
===================================================================
--- linux-2.6.18-rc6-mm2.orig/mm/Kconfig 2006-09-15 12:17:39.778004366 -0500
+++ linux-2.6.18-rc6-mm2/mm/Kconfig 2006-09-18 12:27:12.303278031 -0500
@@ -139,6 +139,10 @@ 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-2.6.18-rc6-mm2/arch/ia64/Kconfig
===================================================================
--- linux-2.6.18-rc6-mm2.orig/arch/ia64/Kconfig 2006-09-15 12:17:39.786794169 -0500
+++ linux-2.6.18-rc6-mm2/arch/ia64/Kconfig 2006-09-18 12:27:12.361876548 -0500
@@ -22,6 +22,10 @@ config 64BIT
bool
default y
+config ZONE_DMA
+ bool
+ default y
+
config MMU
bool
default y
Index: linux-2.6.18-rc6-mm2/arch/cris/Kconfig
===================================================================
--- linux-2.6.18-rc6-mm2.orig/arch/cris/Kconfig 2006-09-15 12:17:39.795583972 -0500
+++ linux-2.6.18-rc6-mm2/arch/cris/Kconfig 2006-09-18 12:27:12.388245880 -0500
@@ -9,6 +9,10 @@ config MMU
bool
default y
+config ZONE_DMA
+ bool
+ default y
+
config RWSEM_GENERIC_SPINLOCK
bool
default y
Index: linux-2.6.18-rc6-mm2/arch/s390/Kconfig
===================================================================
--- linux-2.6.18-rc6-mm2.orig/arch/s390/Kconfig 2006-09-15 12:17:39.804373775 -0500
+++ linux-2.6.18-rc6-mm2/arch/s390/Kconfig 2006-09-18 12:27:12.426334916 -0500
@@ -7,6 +7,10 @@ config MMU
bool
default y
+config ZONE_DMA
+ bool
+ default y
+
config LOCKDEP_SUPPORT
bool
default y
Index: linux-2.6.18-rc6-mm2/arch/xtensa/Kconfig
===================================================================
--- linux-2.6.18-rc6-mm2.orig/arch/xtensa/Kconfig 2006-09-15 12:17:39.813163578 -0500
+++ linux-2.6.18-rc6-mm2/arch/xtensa/Kconfig 2006-09-18 12:27:12.459540742 -0500
@@ -7,6 +7,10 @@ config FRAME_POINTER
bool
default n
+config ZONE_DMA
+ bool
+ default y
+
config XTENSA
bool
default y
Index: linux-2.6.18-rc6-mm2/arch/h8300/Kconfig
===================================================================
--- linux-2.6.18-rc6-mm2.orig/arch/h8300/Kconfig 2006-09-15 12:17:39.820976736 -0500
+++ linux-2.6.18-rc6-mm2/arch/h8300/Kconfig 2006-09-18 12:27:12.496653135 -0500
@@ -17,6 +17,10 @@ config SWAP
bool
default n
+config ZONE_DMA
+ bool
+ default y
+
config FPU
bool
default n
Index: linux-2.6.18-rc6-mm2/arch/v850/Kconfig
===================================================================
--- linux-2.6.18-rc6-mm2.orig/arch/v850/Kconfig 2006-09-15 12:17:39.830743184 -0500
+++ linux-2.6.18-rc6-mm2/arch/v850/Kconfig 2006-09-18 12:27:12.524975752 -0500
@@ -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-2.6.18-rc6-mm2/arch/frv/Kconfig
===================================================================
--- linux-2.6.18-rc6-mm2.orig/arch/frv/Kconfig 2006-09-15 12:17:39.847346146 -0500
+++ linux-2.6.18-rc6-mm2/arch/frv/Kconfig 2006-09-18 12:27:12.604083749 -0500
@@ -6,6 +6,10 @@ config FRV
bool
default y
+config ZONE_DMA
+ bool
+ default y
+
config RWSEM_GENERIC_SPINLOCK
bool
default y
Index: linux-2.6.18-rc6-mm2/arch/m68knommu/Kconfig
===================================================================
--- linux-2.6.18-rc6-mm2.orig/arch/m68knommu/Kconfig 2006-09-15 12:17:39.860042528 -0500
+++ linux-2.6.18-rc6-mm2/arch/m68knommu/Kconfig 2006-09-18 12:27:12.630453081 -0500
@@ -17,6 +17,10 @@ config FPU
bool
default n
+config ZONE_DMA
+ bool
+ default y
+
config RWSEM_GENERIC_SPINLOCK
bool
default y
--
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next prev parent reply other threads:[~2006-09-18 18:36 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-09-18 18:36 [PATCH 0/8] Optional ZONE_DMA V2 Christoph Lameter
2006-09-18 18:36 ` [PATCH 1/8] Deal with cases of ZONE_DMA meaning the first zone Christoph Lameter
2006-09-18 18:36 ` Christoph Lameter [this message]
2006-09-18 18:36 ` [PATCH 3/8] Optional ZONE_DMA in the VM Christoph Lameter
2006-09-18 18:36 ` [PATCH 4/8] Optional ZONE_DMA for i386 Christoph Lameter
2006-09-18 18:36 ` [PATCH 5/8] Optional ZONE_DMA for x86_64 Christoph Lameter
2006-09-18 18:36 ` [PATCH 6/8] Optional ZONE_DMA for ia64 Christoph Lameter
2006-09-18 18:36 ` [PATCH 7/8] Remove ZONE_DMA remains from parisc Christoph Lameter
2006-09-18 18:36 ` [PATCH 8/8] Remove ZONE_DMA remains from sh/sh64 Christoph Lameter
[not found] ` <20060911222729.4849.69497.sendpatchset@schroedinger.engr.sgi.com>
[not found] ` <20060911222744.4849.26386.sendpatchset@schroedinger.engr.sgi.com>
[not found] ` <450600C7.7090801@yahoo.com.au>
2006-09-12 1:40 ` [PATCH 3/6] Optional ZONE_DMA in the VM Christoph Lameter
[not found] ` <20060912133457.GC10689@sgi.com>
[not found] ` <Pine.LNX.4.64.0609121032310.11278@schroedinger.engr.sgi.com>
2006-09-12 17:47 ` [PATCH 0/8] Optional ZONE_DMA V1 Martin Bligh
2006-09-12 17:53 ` Christoph Lameter
[not found] ` <1158046205.2992.1.camel@laptopd505.fenrus.org>
[not found] ` <Pine.LNX.4.64.0609121024290.11188@schroedinger.engr.sgi.com>
[not found] ` <yq0d5a0fbcj.fsf@jaguar.mkp.net>
[not found] ` <Pine.LNX.4.64.0609130109030.15792@schroedinger.engr.sgi.com>
[not found] ` <4507D4EE.4060501@sgi.com>
2006-09-13 17:23 ` Christoph Lameter
2006-09-13 17:49 ` Jack Steiner
2006-09-13 18:00 ` Christoph Lameter
2006-09-14 8:52 ` Jes Sorensen
2006-09-14 16:55 ` Christoph Lameter
[not found] ` <20060911222739.4849.79915.sendpatchset@schroedinger.engr.sgi.com>
[not found] ` <20060918135559.GB15096@infradead.org>
[not found] ` <20060918152243.GA4320@localhost.na.rta>
2006-09-18 17:33 ` [PATCH 2/6] Introduce CONFIG_ZONE_DMA Christoph Lameter
2006-09-18 22:45 ` Paul Mundt
2006-09-18 22:58 ` Christoph Lameter
2006-09-18 23:25 ` Paul Mundt
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