1# 2# For a description of the syntax of this configuration file, 3# see docs/Kconfig-language.txt. 4# 5 6menu "Linux Module Utilities" 7 8config MODPROBE_SMALL 9 bool "Simplified modutils" 10 default y 11 help 12 Build smaller (~1.5 kbytes), simplified module tools. 13 14 This option by itself does not enable any applets - 15 you need to select applets individually below. 16 17 With this option modprobe does not require modules.dep file 18 and does not use /etc/modules.conf file. 19 It scans module files in /lib/modules/`uname -r` and 20 determines dependencies and module alias names on the fly. 21 This may make module loading slower, most notably 22 when one needs to load module by alias (this requires 23 scanning through module _bodies_). 24 25 At the first attempt to load a module by alias modprobe 26 will try to generate modules.dep.bb file in order to speed up 27 future loads by alias. Failure to do so (read-only /lib/modules, 28 etc) is not reported, and future modprobes will be slow too. 29 30 NB: modules.dep.bb file format is not compatible 31 with modules.dep file as created/used by standard module tools. 32 33 Additional module parameters can be stored in 34 /etc/modules/$module_name files. 35 36INSERT 37 38comment "Options common to multiple modutils" 39 40config FEATURE_CMDLINE_MODULE_OPTIONS 41 bool "Accept module options on modprobe command line" 42 default y 43 depends on INSMOD || MODPROBE 44 help 45 Allow insmod and modprobe take module options from the applets' 46 command line. 47 48config FEATURE_MODPROBE_SMALL_CHECK_ALREADY_LOADED 49 bool "Skip loading of already loaded modules" 50 default y 51 depends on MODPROBE_SMALL && (DEPMOD || INSMOD || MODPROBE) 52 help 53 Check if the module is already loaded. 54 55config FEATURE_2_4_MODULES 56 bool "Support version 2.2/2.4 Linux kernels" 57 default n 58 depends on (INSMOD || LSMOD || MODPROBE || RMMOD) && !MODPROBE_SMALL 59 help 60 Support module loading for 2.2.x and 2.4.x Linux kernels. 61 This increases size considerably. Say N unless you plan 62 to run ancient kernels. 63 64config FEATURE_INSMOD_VERSION_CHECKING 65 bool "Enable module version checking" 66 default n 67 depends on FEATURE_2_4_MODULES && (INSMOD || MODPROBE) 68 help 69 Support checking of versions for modules. This is used to 70 ensure that the kernel and module are made for each other. 71 72config FEATURE_INSMOD_KSYMOOPS_SYMBOLS 73 bool "Add module symbols to kernel symbol table" 74 default n 75 depends on FEATURE_2_4_MODULES && (INSMOD || MODPROBE) 76 help 77 By adding module symbols to the kernel symbol table, Oops messages 78 occurring within kernel modules can be properly debugged. By enabling 79 this feature, module symbols will always be added to the kernel symbol 80 table for proper debugging support. If you are not interested in 81 Oops messages from kernel modules, say N. 82 83config FEATURE_INSMOD_LOADINKMEM 84 bool "In kernel memory optimization (uClinux only)" 85 default n 86 depends on FEATURE_2_4_MODULES && (INSMOD || MODPROBE) 87 help 88 This is a special uClinux only memory optimization that lets insmod 89 load the specified kernel module directly into kernel space, reducing 90 memory usage by preventing the need for two copies of the module 91 being loaded into memory. 92 93config FEATURE_INSMOD_LOAD_MAP 94 bool "Enable insmod load map (-m) option" 95 default n 96 depends on FEATURE_2_4_MODULES && INSMOD 97 help 98 Enabling this, one would be able to get a load map 99 output on stdout. This makes kernel module debugging 100 easier. 101 If you don't plan to debug kernel modules, you 102 don't need this option. 103 104config FEATURE_INSMOD_LOAD_MAP_FULL 105 bool "Symbols in load map" 106 default y 107 depends on FEATURE_INSMOD_LOAD_MAP 108 help 109 Without this option, -m will only output section 110 load map. With this option, -m will also output 111 symbols load map. 112 113config FEATURE_CHECK_TAINTED_MODULE 114 bool "Support tainted module checking with new kernels" 115 default y 116 depends on (LSMOD || FEATURE_2_4_MODULES) && !MODPROBE_SMALL 117 help 118 Support checking for tainted modules. These are usually binary 119 only modules that will make the linux-kernel list ignore your 120 support request. 121 This option is required to support GPLONLY modules. 122 123config FEATURE_INSMOD_TRY_MMAP 124 bool "Try to load module from a mmap'ed area" 125 default n 126 depends on (INSMOD || MODPROBE) && !MODPROBE_SMALL 127 help 128 This option causes module loading code to try to mmap 129 module first. If it does not work (for example, 130 it does not work for compressed modules), module will be read 131 (and unpacked if needed) into a memory block allocated by malloc. 132 133 The only case when mmap works but malloc does not is when 134 you are trying to load a big module on a very memory-constrained 135 machine. Malloc will momentarily need 2x as much memory as mmap. 136 137 Choosing N saves about 250 bytes of code (on 32-bit x86). 138 139config FEATURE_MODUTILS_ALIAS 140 bool "Support module.aliases file" 141 default y 142 depends on (DEPMOD || MODPROBE) && !MODPROBE_SMALL 143 help 144 Generate and parse modules.alias containing aliases for bus 145 identifiers: 146 alias pcmcia:m*c*f03fn*pfn*pa*pb*pc*pd* parport_cs 147 148 and aliases for logical modules names e.g.: 149 alias padlock_aes aes 150 alias aes_i586 aes 151 alias aes_generic aes 152 153 Say Y if unsure. 154 155config FEATURE_MODUTILS_SYMBOLS 156 bool "Support module.symbols file" 157 default y 158 depends on (DEPMOD || MODPROBE) && !MODPROBE_SMALL 159 help 160 Generate and parse modules.symbols containing aliases for 161 symbol_request() kernel calls, such as: 162 alias symbol:usb_sg_init usbcore 163 164 Say Y if unsure. 165 166config DEFAULT_MODULES_DIR 167 string "Default directory containing modules" 168 default "/lib/modules" 169 depends on DEPMOD || MODPROBE || MODINFO 170 help 171 Directory that contains kernel modules. 172 Defaults to "/lib/modules" 173 174config DEFAULT_DEPMOD_FILE 175 string "Default name of modules.dep" 176 default "modules.dep" 177 depends on DEPMOD || MODPROBE || MODINFO 178 help 179 Filename that contains kernel modules dependencies. 180 Defaults to "modules.dep". 181 If you configured the "simplified modutils" (MODPROBE_SMALL), a 182 ".bb" suffix will be added after this name. Do not specify ".bb" 183 here unless you intend your depmod or modprobe to work on 184 "modules.dep.bb.bb" or such. 185 186endmenu 187