X-Git-Url: http://pilppa.org/gitweb/?a=blobdiff_plain;f=arch%2Fpowerpc%2FKconfig;h=84b861316ce78b65f90febaf44227d3ffed37c83;hb=85da1fb545e5fe51c35e0576f71780cc557f4277;hp=525c13a4de93ede9cd9451569d41cd20760b3636;hpb=a8022697811c3f2271df5ec14fa6f518b731b46a;p=linux-2.6-omap-h63xx.git

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 525c13a4de9..84b861316ce 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -108,6 +108,8 @@ config ARCH_NO_VIRT_TO_BUS
 config PPC
 	bool
 	default y
+	select HAVE_FTRACE_MCOUNT_RECORD
+	select HAVE_DYNAMIC_FTRACE
 	select HAVE_FUNCTION_TRACER
 	select ARCH_WANT_OPTIONAL_GPIOLIB
 	select HAVE_IDE
@@ -141,7 +143,7 @@ config GENERIC_NVRAM
 	bool
 	default y if PPC32
 
-config SCHED_NO_NO_OMIT_FRAME_POINTER
+config SCHED_OMIT_FRAME_POINTER
 	bool
 	default y
 
@@ -285,6 +287,10 @@ config IOMMU_VMERGE
 config IOMMU_HELPER
 	def_bool PPC64
 
+config PPC_NEED_DMA_SYNC_OPS
+	def_bool y
+	depends on NOT_COHERENT_CACHE
+
 config HOTPLUG_CPU
 	bool "Support for enabling/disabling CPUs"
 	depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
@@ -322,7 +328,8 @@ config KEXEC
 
 config CRASH_DUMP
 	bool "Build a kdump crash kernel"
-	depends on PPC_MULTIPLATFORM && PPC64 && RELOCATABLE
+	depends on PPC64 || 6xx
+	select RELOCATABLE if PPC64
 	help
 	  Build a kernel suitable for use as a kdump capture kernel.
 	  The same kernel binary can be used as production kernel and dump
@@ -401,23 +408,53 @@ config PPC_HAS_HASH_64K
 	depends on PPC64
 	default n
 
-config PPC_64K_PAGES
-	bool "64k page size"
-	depends on PPC64
-	select PPC_HAS_HASH_64K
+choice
+	prompt "Page size"
+	default PPC_4K_PAGES
 	help
-	  This option changes the kernel logical page size to 64k. On machines
-	  without processor support for 64k pages, the kernel will simulate
-	  them by loading each individual 4k page on demand transparently,
-	  while on hardware with such support, it will be used to map
-	  normal application pages.
+	  Select the kernel logical page size. Increasing the page size
+	  will reduce software overhead at each page boundary, allow
+	  hardware prefetch mechanisms to be more effective, and allow
+	  larger dma transfers increasing IO efficiency and reducing
+	  overhead. However the utilization of memory will increase.
+	  For example, each cached file will using a multiple of the
+	  page size to hold its contents and the difference between the
+	  end of file and the end of page is wasted.
+
+	  Some dedicated systems, such as software raid serving with
+	  accelerated calculations, have shown significant increases.
+
+	  If you configure a 64 bit kernel for 64k pages but the
+	  processor does not support them, then the kernel will simulate
+	  them with 4k pages, loading them on demand, but with the
+	  reduced software overhead and larger internal fragmentation.
+	  For the 32 bit kernel, a large page option will not be offered
+	  unless it is supported by the configured processor.
+
+	  If unsure, choose 4K_PAGES.
+
+config PPC_4K_PAGES
+	bool "4k page size"
+
+config PPC_16K_PAGES
+	bool "16k page size" if 44x
+
+config PPC_64K_PAGES
+	bool "64k page size" if 44x || PPC_STD_MMU_64
+	select PPC_HAS_HASH_64K if PPC_STD_MMU_64
+
+endchoice
 
 config FORCE_MAX_ZONEORDER
 	int "Maximum zone order"
-	range 9 64 if PPC_64K_PAGES
-	default "9" if PPC_64K_PAGES
-	range 13 64 if PPC64 && !PPC_64K_PAGES
-	default "13" if PPC64 && !PPC_64K_PAGES
+	range 9 64 if PPC_STD_MMU_64 && PPC_64K_PAGES
+	default "9" if PPC_STD_MMU_64 && PPC_64K_PAGES
+	range 13 64 if PPC_STD_MMU_64 && !PPC_64K_PAGES
+	default "13" if PPC_STD_MMU_64 && !PPC_64K_PAGES
+	range 9 64 if PPC_STD_MMU_32 && PPC_16K_PAGES
+	default "9" if PPC_STD_MMU_32 && PPC_16K_PAGES
+	range 7 64 if PPC_STD_MMU_32 && PPC_64K_PAGES
+	default "7" if PPC_STD_MMU_32 && PPC_64K_PAGES
 	range 11 64
 	default "11"
 	help
@@ -437,7 +474,7 @@ config FORCE_MAX_ZONEORDER
 
 config PPC_SUBPAGE_PROT
 	bool "Support setting protections for 4k subpages"
-	depends on PPC_64K_PAGES
+	depends on PPC_STD_MMU_64 && PPC_64K_PAGES
 	help
 	  This option adds support for a system call to allow user programs
 	  to set access permissions (read/write, readonly, or no access)