diff options
Diffstat (limited to 'arch/microblaze/Kconfig')
| -rw-r--r-- | arch/microblaze/Kconfig | 67 |
1 files changed, 47 insertions, 20 deletions
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig index 505a08592423..387d5ffdfd3a 100644 --- 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" |