diff options
Diffstat (limited to 'drivers/base/Kconfig')
| -rw-r--r-- | drivers/base/Kconfig | 61 |
1 files changed, 33 insertions, 28 deletions
diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig index 9b21469482a..23b8726962a 100644 --- a/drivers/base/Kconfig +++ b/drivers/base/Kconfig @@ -1,11 +1,10 @@ menu "Generic Driver Options" -config UEVENT_HELPER_PATH - string "path to uevent helper" - depends on HOTPLUG - default "" +config UEVENT_HELPER + bool "Support for uevent helper" + default y help - Path to uevent helper program forked by the kernel for + The uevent helper program is forked by the kernel for every uevent. Before the switch to the netlink-based uevent source, this was used to hook hotplug scripts into kernel device events. It @@ -16,14 +15,18 @@ config UEVENT_HELPER_PATH that it creates a high system load, or on smaller systems it is known to create out-of-memory situations during bootup. - To disable user space helper program execution at early boot - time specify an empty string here. This setting can be altered +config UEVENT_HELPER_PATH + string "path to uevent helper" + depends on UEVENT_HELPER + default "" + help + To disable user space helper program execution at by default + specify an empty string here. This setting can still be altered via /proc/sys/kernel/hotplug or via /sys/kernel/uevent_helper later at runtime. config DEVTMPFS bool "Maintain a devtmpfs filesystem to mount at /dev" - depends on HOTPLUG help This creates a tmpfs/ramfs filesystem instance early at bootup. In this filesystem, the kernel driver core maintains device @@ -51,13 +54,13 @@ config DEVTMPFS_MOUNT with the commandline parameter: devtmpfs.mount=0|1. This option does not affect initramfs based booting, here the devtmpfs filesystem always needs to be mounted manually - after the roots is mounted. + after the rootfs is mounted. With this option enabled, it allows to bring up a system in rescue mode with init=/bin/sh, even when the /dev directory on the rootfs is completely empty. config STANDALONE - bool "Select only drivers that don't need compile-time external firmware" if EXPERIMENTAL + bool "Select only drivers that don't need compile-time external firmware" default y help Select this option if you don't have magic firmware for drivers that @@ -145,6 +148,17 @@ config EXTRA_FIRMWARE_DIR this option you can point it elsewhere, such as /lib/firmware/ or some other directory containing the firmware files. +config FW_LOADER_USER_HELPER + bool "Fallback user-helper invocation for firmware loading" + depends on FW_LOADER + default y + help + This option enables / disables the invocation of user-helper + (e.g. udev) for loading firmware files as a fallback after the + direct file loading in kernel fails. The user-mode helper is + no longer required unless you have a special firmware file that + resides in a non-standard path. + config DEBUG_DRIVER bool "Driver Core verbose debug messages" depends on DEBUG_KERNEL @@ -176,6 +190,9 @@ config GENERIC_CPU_DEVICES bool default n +config GENERIC_CPU_AUTOPROBE + bool + config SOC_BUS bool @@ -185,17 +202,15 @@ config DMA_SHARED_BUFFER bool default n select ANON_INODES - depends on EXPERIMENTAL help This option enables the framework for buffer-sharing between multiple drivers. A buffer is associated with a file using driver APIs extension; the file's descriptor can then be passed on to other driver. -config CMA - bool "Contiguous Memory Allocator (EXPERIMENTAL)" - depends on HAVE_DMA_CONTIGUOUS && HAVE_MEMBLOCK && EXPERIMENTAL - select MIGRATION +config DMA_CMA + bool "DMA Contiguous Memory Allocator" + depends on HAVE_DMA_CONTIGUOUS && CMA help This enables the Contiguous Memory Allocator which allows drivers to allocate big physically-contiguous blocks of memory for use with @@ -204,17 +219,7 @@ config CMA For more information see <include/linux/dma-contiguous.h>. If unsure, say "n". -if CMA - -config CMA_DEBUG - bool "CMA debug messages (DEVELOPMENT)" - depends on DEBUG_KERNEL - help - Turns on debug messages in CMA. This produces KERN_DEBUG - messages for every CMA call as well as various messages while - processing calls such as dma_alloc_from_contiguous(). - This option does not affect warning and error messages. - +if DMA_CMA comment "Default contiguous memory area size:" config CMA_SIZE_MBYTES @@ -235,7 +240,7 @@ config CMA_SIZE_PERCENTAGE choice prompt "Selected region size" - default CMA_SIZE_SEL_ABSOLUTE + default CMA_SIZE_SEL_MBYTES config CMA_SIZE_SEL_MBYTES bool "Use mega bytes value only" @@ -253,7 +258,7 @@ endchoice config CMA_ALIGNMENT int "Maximum PAGE_SIZE order of alignment for contiguous buffers" - range 4 9 + range 4 12 default 8 help DMA mapping framework by default aligns all buffers to the smallest |