From: Christoph Lameter <clameter@sgi.com>
To: linux-kernel@vger.kernel.org
Cc: Martin Bligh <mbligh@google.com>,
Christoph Hellwig <hch@infradead.org>,
Marcelo Tosatti <marcelo@kvack.org>,
Arjan van de Ven <arjan@infradead.org>,
Nick Piggin <nickpiggin@yahoo.com.au>,
Christoph Lameter <clameter@sgi.com>, Andi Kleen <ak@suse.de>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Subject: [RFC 1/8] Add CONFIG_ZONE_DMA to all archesM
Date: Fri, 7 Jul 2006 17:05:06 -0700 (PDT) [thread overview]
Message-ID: <20060708000506.3829.34340.sendpatchset@schroedinger.engr.sgi.com> (raw)
In-Reply-To: <20060708000501.3829.25578.sendpatchset@schroedinger.engr.sgi.com>
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 <clameter@sgi.com>
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
<http://www.linux-sh.org/>.
+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
next prev parent reply other threads:[~2006-07-08 0:05 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-08 0:05 [RFC 0/8] Optional ZONE_DMA Christoph Lameter
2006-07-08 0:05 ` Christoph Lameter [this message]
2006-07-10 0:52 ` [RFC 1/8] Add CONFIG_ZONE_DMA to all archesM KAMEZAWA Hiroyuki
2006-07-10 15:56 ` Christoph Lameter
2006-07-11 7:11 ` KAMEZAWA Hiroyuki
2006-07-08 0:05 ` [RFC 2/8] slab allocator: Make DMA support configurable Christoph Lameter
2006-07-08 0:05 ` [RFC 3/8] eventcounters: Optional ZONE_DMA Christoph Lameter
2006-07-08 0:05 ` [RFC 4/8] page allocator: " Christoph Lameter
2006-07-08 0:23 ` Andi Kleen
2006-07-08 0:41 ` Christoph Lameter
2006-07-08 0:05 ` [RFC 5/8] x86_64 without ZONE_DMA Christoph Lameter
2006-07-08 0:20 ` Andi Kleen
2006-07-08 0:42 ` Christoph Lameter
2006-07-08 1:00 ` Andi Kleen
2006-07-08 1:25 ` Christoph Lameter
2006-07-08 0:05 ` [RFC 6/8] i386 " Christoph Lameter
2006-07-08 0:05 ` [RFC 7/8] Single zone optimizations Christoph Lameter
2006-07-08 0:19 ` Andi Kleen
2006-07-08 0:05 ` [RFC 8/8] Optimize mempolicies for a single zone Christoph Lameter
2006-07-08 0:17 ` Andi Kleen
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