# # For a description of the syntax of this configuration file, # see scripts/kbuild/config-language.txt. # comment "-------------------------------------------------" comment "Linux Module Utilities" comment "-------------------------------------------------" config KEMBTK_BUSYB_MODINFO bool "modinfo" default y select KEMBTK_BUSYB_PLATFORM_LINUX help Show information about a Linux Kernel module config KEMBTK_BUSYB_MODPROBE_SMALL bool "Simplified modutils" default y select KEMBTK_BUSYB_PLATFORM_LINUX help Simplified modutils. With this option modprobe does not require modules.dep file and does not use /etc/modules.conf file. It scans module files in /lib/modules/`uname -r` and determines dependencies and module alias names on the fly. This may make module loading slower, most notably when one needs to load module by alias (this requires scanning through module _bodies_). At the first attempt to load a module by alias modprobe will try to generate modules.dep.bb file in order to speed up future loads by alias. Failure to do so (read-only /lib/modules, etc) is not reported, and future modprobes will be slow too. NB: modules.dep.bb file format is not compatible with modules.dep file as created/used by standard module tools. Additional module parameters can be stored in /etc/modules/$module_name files. Apart from modprobe, other utilities are also provided: - insmod is an alias to modprobe - rmmod is an alias to modprobe -r - depmod generates modules.dep.bb As of 2008-07, this code is experimental. It is 14kb smaller than "non-small" modutils. config KEMBTK_BUSYB_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE bool "Accept module options on modprobe command line" default y depends on KEMBTK_BUSYB_MODPROBE_SMALL select KEMBTK_BUSYB_PLATFORM_LINUX help Allow insmod and modprobe take module options from command line. config KEMBTK_BUSYB_FEATURE_MODPROBE_SMALL_CHECK_ALREADY_LOADED bool "Skip loading of already loaded modules" default y depends on KEMBTK_BUSYB_MODPROBE_SMALL help Check if the module is already loaded. config KEMBTK_BUSYB_INSMOD bool "insmod" depends on !KEMBTK_BUSYB_MODPROBE_SMALL select KEMBTK_BUSYB_PLATFORM_LINUX help insmod is used to load specified modules in the running kernel. config KEMBTK_BUSYB_RMMOD bool "rmmod" depends on !KEMBTK_BUSYB_MODPROBE_SMALL select KEMBTK_BUSYB_PLATFORM_LINUX help rmmod is used to unload specified modules from the kernel. config KEMBTK_BUSYB_LSMOD bool "lsmod" depends on !KEMBTK_BUSYB_MODPROBE_SMALL select KEMBTK_BUSYB_PLATFORM_LINUX help lsmod is used to display a list of loaded modules. config KEMBTK_BUSYB_FEATURE_LSMOD_PRETTY_2_6_OUTPUT bool "Pretty output" depends on KEMBTK_BUSYB_LSMOD select KEMBTK_BUSYB_PLATFORM_LINUX help This option makes output format of lsmod adjusted to the format of module-init-tools for Linux kernel 2.6. Increases size somewhat. config KEMBTK_BUSYB_MODPROBE bool "modprobe" depends on !KEMBTK_BUSYB_MODPROBE_SMALL select KEMBTK_BUSYB_PLATFORM_LINUX help Handle the loading of modules, and their dependencies on a high level. config KEMBTK_BUSYB_FEATURE_MODPROBE_BLACKLIST bool "Blacklist support" depends on KEMBTK_BUSYB_MODPROBE select KEMBTK_BUSYB_PLATFORM_LINUX help Say 'y' here to enable support for the 'blacklist' command in modprobe.conf. This prevents the alias resolver to resolve blacklisted modules. This is useful if you want to prevent your hardware autodetection scripts to load modules like evdev, frame buffer drivers etc. config KEMBTK_BUSYB_DEPMOD bool "depmod" depends on !KEMBTK_BUSYB_MODPROBE_SMALL select KEMBTK_BUSYB_PLATFORM_LINUX help depmod generates modules.dep (and potentially modules.alias and modules.symbols) that contain dependency information for modprobe. comment "Options common to multiple modutils" config KEMBTK_BUSYB_FEATURE_2_4_MODULES bool "Support version 2.2/2.4 Linux kernels" depends on KEMBTK_BUSYB_INSMOD || KEMBTK_BUSYB_RMMOD || KEMBTK_BUSYB_LSMOD select KEMBTK_BUSYB_PLATFORM_LINUX help Support module loading for 2.2.x and 2.4.x Linux kernels. This increases size considerably. Say N unless you plan to run ancient kernels. config KEMBTK_BUSYB_FEATURE_INSMOD_TRY_MMAP bool "Try to load module from a mmap'ed area" depends on KEMBTK_BUSYB_INSMOD || KEMBTK_BUSYB_MODPROBE_SMALL select KEMBTK_BUSYB_PLATFORM_LINUX help This option causes module loading code to try to mmap module first. If it does not work (for example, it does not work for compressed modules), module will be read (and unpacked if needed) into a memory block allocated by malloc. The only case when mmap works but malloc does not is when you are trying to load a big module on a very memory-constrained machine. Malloc will momentarily need 2x as much memory as mmap. Choosing N saves about 250 bytes of code (on 32-bit x86). config KEMBTK_BUSYB_FEATURE_INSMOD_VERSION_CHECKING bool "Enable module version checking" depends on KEMBTK_BUSYB_FEATURE_2_4_MODULES && (KEMBTK_BUSYB_INSMOD || KEMBTK_BUSYB_MODPROBE) select KEMBTK_BUSYB_PLATFORM_LINUX help Support checking of versions for modules. This is used to ensure that the kernel and module are made for each other. config KEMBTK_BUSYB_FEATURE_INSMOD_KSYMOOPS_SYMBOLS bool "Add module symbols to kernel symbol table" depends on KEMBTK_BUSYB_FEATURE_2_4_MODULES && (KEMBTK_BUSYB_INSMOD || KEMBTK_BUSYB_MODPROBE) select KEMBTK_BUSYB_PLATFORM_LINUX help By adding module symbols to the kernel symbol table, Oops messages occuring within kernel modules can be properly debugged. By enabling this feature, module symbols will always be added to the kernel symbol table for proper debugging support. If you are not interested in Oops messages from kernel modules, say N. config KEMBTK_BUSYB_FEATURE_INSMOD_LOADINKMEM bool "In kernel memory optimization (uClinux only)" depends on KEMBTK_BUSYB_FEATURE_2_4_MODULES && (KEMBTK_BUSYB_INSMOD || KEMBTK_BUSYB_MODPROBE) select KEMBTK_BUSYB_PLATFORM_LINUX help This is a special uClinux only memory optimization that lets insmod load the specified kernel module directly into kernel space, reducing memory usage by preventing the need for two copies of the module being loaded into memory. config KEMBTK_BUSYB_FEATURE_INSMOD_LOAD_MAP bool "Enable insmod load map (-m) option" depends on KEMBTK_BUSYB_FEATURE_2_4_MODULES && KEMBTK_BUSYB_INSMOD select KEMBTK_BUSYB_PLATFORM_LINUX help Enabling this, one would be able to get a load map output on stdout. This makes kernel module debugging easier. If you don't plan to debug kernel modules, you don't need this option. config KEMBTK_BUSYB_FEATURE_INSMOD_LOAD_MAP_FULL bool "Symbols in load map" default y depends on KEMBTK_BUSYB_FEATURE_INSMOD_LOAD_MAP && !KEMBTK_BUSYB_MODPROBE_SMALL select KEMBTK_BUSYB_PLATFORM_LINUX help Without this option, -m will only output section load map. With this option, -m will also output symbols load map. config KEMBTK_BUSYB_FEATURE_CHECK_TAINTED_MODULE bool "Support tainted module checking with new kernels" default y depends on (KEMBTK_BUSYB_LSMOD || KEMBTK_BUSYB_FEATURE_2_4_MODULES) && !KEMBTK_BUSYB_MODPROBE_SMALL select KEMBTK_BUSYB_PLATFORM_LINUX help Support checking for tainted modules. These are usually binary only modules that will make the linux-kernel list ignore your support request. This option is required to support GPLONLY modules. config KEMBTK_BUSYB_FEATURE_MODUTILS_ALIAS bool "Support for module.aliases file" default y depends on KEMBTK_BUSYB_DEPMOD || KEMBTK_BUSYB_MODPROBE select KEMBTK_BUSYB_PLATFORM_LINUX help Generate and parse modules.alias containing aliases for bus identifiers: alias pcmcia:m*c*f03fn*pfn*pa*pb*pc*pd* parport_cs and aliases for logical modules names e.g.: alias padlock_aes aes alias aes_i586 aes alias aes_generic aes Say Y if unsure. config KEMBTK_BUSYB_FEATURE_MODUTILS_SYMBOLS bool "Support for module.symbols file" default y depends on KEMBTK_BUSYB_DEPMOD || KEMBTK_BUSYB_MODPROBE select KEMBTK_BUSYB_PLATFORM_LINUX help Generate and parse modules.symbols containing aliases for symbol_request() kernel calls, such as: alias symbol:usb_sg_init usbcore Say Y if unsure. config KEMBTK_BUSYB_DEFAULT_MODULES_DIR string "Default directory containing modules" default "/lib/modules" depends on KEMBTK_BUSYB_DEPMOD || KEMBTK_BUSYB_MODPROBE || KEMBTK_BUSYB_MODPROBE_SMALL || KEMBTK_BUSYB_MODINFO help Directory that contains kernel modules. Defaults to "/lib/modules" config KEMBTK_BUSYB_DEFAULT_DEPMOD_FILE string "Default name of modules.dep" default "modules.dep" depends on KEMBTK_BUSYB_DEPMOD || KEMBTK_BUSYB_MODPROBE || KEMBTK_BUSYB_MODPROBE_SMALL || KEMBTK_BUSYB_MODINFO help Filename that contains kernel modules dependencies. Defaults to "modules.dep"