Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6

[pandora-kernel.git] / arch / microblaze / Kconfig

diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
index 505a085..387d5ff 100644 (file)
--- a/arch/microblaze/Kconfig
+++ b/arch/microblaze/Kconfig
@@ -1,8 +1,3 @@
-# For a description of the syntax of this configuration file,
-# see Documentation/kbuild/kconfig-language.txt.
-
-mainmenu "Linux/Microblaze Kernel Configuration"
-
 config MICROBLAZE
        def_bool y
        select HAVE_MEMBLOCK
@@ -14,9 +9,12 @@ config MICROBLAZE
        select USB_ARCH_HAS_EHCI
        select ARCH_WANT_OPTIONAL_GPIOLIB
        select HAVE_OPROFILE
+       select HAVE_ARCH_KGDB
        select HAVE_DMA_ATTRS
        select HAVE_DMA_API_DEBUG
        select TRACING_SUPPORT
+       select OF
+       select OF_FLATTREE
 
 config SWAP
        def_bool n
@@ -48,9 +46,6 @@ config GENERIC_IRQ_PROBE
 config GENERIC_CALIBRATE_DELAY
        def_bool y
 
-config GENERIC_TIME
-       def_bool y
-
 config GENERIC_TIME_VSYSCALL
        def_bool n
 
@@ -75,9 +70,6 @@ config LOCKDEP_SUPPORT
 config HAVE_LATENCYTOP_SUPPORT
        def_bool y
 
-config DTC
-       def_bool y
-
 source "init/Kconfig"
 
 source "kernel/Kconfig.freezer"
@@ -124,17 +116,22 @@ config CMDLINE_FORCE
          Set this to have arguments from the default kernel command string
          override those passed by the boot loader.
 
-config OF
-       def_bool y
-       select OF_FLATTREE
-
-config PROC_DEVICETREE
-       bool "Support for device tree in /proc"
+config SECCOMP
+       bool "Enable seccomp to safely compute untrusted bytecode"
        depends on PROC_FS
+       default y
        help
-         This option adds a device-tree directory under /proc which contains
-         an image of the device tree that the kernel copies from Open
-         Firmware or other boot firmware. If unsure, say Y here.
+         This kernel feature is useful for number crunching applications
+         that may need to compute untrusted bytecode during their
+         execution. By using pipes or other transports made available to
+         the process as file descriptors supporting the read/write
+         syscalls, it's possible to isolate those applications in
+         their own address space using seccomp. Once seccomp is
+         enabled via /proc/<pid>/seccomp, it cannot be disabled
+         and the task is only allowed to execute a few safe syscalls
+         defined by each seccomp mode.
+
+         If unsure, say Y. Only embedded should say N here.
 
 endmenu
 
@@ -223,6 +220,36 @@ config TASK_SIZE
        hex "Size of user task space" if TASK_SIZE_BOOL
        default "0x80000000"
 
+choice
+       prompt "Page size"
+       default MICROBLAZE_4K_PAGES
+       depends on ADVANCED_OPTIONS && !MMU
+       help
+         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.
+
+         If unsure, choose 4K_PAGES.
+
+config MICROBLAZE_4K_PAGES
+       bool "4k page size"
+
+config MICROBLAZE_8K_PAGES
+       bool "8k page size"
+
+config MICROBLAZE_16K_PAGES
+       bool "16k page size"
+
+config MICROBLAZE_32K_PAGES
+       bool "32k page size"
+
+endchoice
+
 endmenu
 
 source "mm/Kconfig"