| 1 | #
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| 2 | # For a description of the syntax of this configuration file,
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| 3 | # see scripts/kbuild/config-language.txt.
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| 4 | #
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| 5 |
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| 6 | menu "Linux Module Utilities"
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| 7 | depends on PLATFORM_LINUX
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| 8 |
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| 9 | INSERT
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| 10 |
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| 11 | config MODPROBE_SMALL
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| 12 | bool "Simplified modutils"
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| 13 | default y
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| 14 | help
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| 15 | Simplified modutils.
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| 16 |
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| 17 | With this option modprobe does not require modules.dep file
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| 18 | and does not use /etc/modules.conf file.
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| 19 | It scans module files in /lib/modules/`uname -r` and
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| 20 | determines dependencies and module alias names on the fly.
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| 21 | This may make module loading slower, most notably
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| 22 | when one needs to load module by alias (this requires
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| 23 | scanning through module _bodies_).
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| 24 |
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| 25 | At the first attempt to load a module by alias modprobe
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| 26 | will try to generate modules.dep.bb file in order to speed up
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| 27 | future loads by alias. Failure to do so (read-only /lib/modules,
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| 28 | etc) is not reported, and future modprobes will be slow too.
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| 29 |
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| 30 | NB: modules.dep.bb file format is not compatible
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| 31 | with modules.dep file as created/used by standard module tools.
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| 32 |
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| 33 | Additional module parameters can be stored in
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| 34 | /etc/modules/$module_name files.
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| 35 |
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| 36 | Apart from modprobe, other utilities are also provided:
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| 37 | - insmod is an alias to modprobe
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| 38 | - rmmod is an alias to modprobe -r
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| 39 | - depmod generates modules.dep.bb
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| 40 |
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| 41 | As of 2008-07, this code is experimental. It is 14kb smaller
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| 42 | than "non-small" modutils.
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| 43 |
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| 44 | config FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE
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| 45 | bool "Accept module options on modprobe command line"
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| 46 | default y
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| 47 | depends on MODPROBE_SMALL
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| 48 | help
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| 49 | Allow insmod and modprobe take module options from command line.
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| 50 |
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| 51 | config FEATURE_MODPROBE_SMALL_CHECK_ALREADY_LOADED
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| 52 | bool "Skip loading of already loaded modules"
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| 53 | default y
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| 54 | depends on MODPROBE_SMALL
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| 55 | help
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| 56 | Check if the module is already loaded.
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| 57 |
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| 58 | config INSMOD
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| 59 | bool "insmod"
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| 60 | default n
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| 61 | depends on !MODPROBE_SMALL
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| 62 | help
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| 63 | insmod is used to load specified modules in the running kernel.
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| 64 |
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| 65 | config RMMOD
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| 66 | bool "rmmod"
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| 67 | default n
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| 68 | depends on !MODPROBE_SMALL
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| 69 | help
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| 70 | rmmod is used to unload specified modules from the kernel.
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| 71 |
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| 72 | config LSMOD
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| 73 | bool "lsmod"
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| 74 | default n
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| 75 | depends on !MODPROBE_SMALL
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| 76 | help
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| 77 | lsmod is used to display a list of loaded modules.
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| 78 |
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| 79 | config FEATURE_LSMOD_PRETTY_2_6_OUTPUT
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| 80 | bool "Pretty output"
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| 81 | default n
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| 82 | depends on LSMOD
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| 83 | help
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| 84 | This option makes output format of lsmod adjusted to
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| 85 | the format of module-init-tools for Linux kernel 2.6.
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| 86 | Increases size somewhat.
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| 87 |
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| 88 | config MODPROBE
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| 89 | bool "modprobe"
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| 90 | default n
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| 91 | depends on !MODPROBE_SMALL
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| 92 | help
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| 93 | Handle the loading of modules, and their dependencies on a high
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| 94 | level.
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| 95 |
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| 96 | config FEATURE_MODPROBE_BLACKLIST
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| 97 | bool "Blacklist support"
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| 98 | default n
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| 99 | depends on MODPROBE
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| 100 | help
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| 101 | Say 'y' here to enable support for the 'blacklist' command in
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| 102 | modprobe.conf. This prevents the alias resolver to resolve
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| 103 | blacklisted modules. This is useful if you want to prevent your
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| 104 | hardware autodetection scripts to load modules like evdev, frame
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| 105 | buffer drivers etc.
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| 106 |
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| 107 | config DEPMOD
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| 108 | bool "depmod"
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| 109 | default n
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| 110 | depends on !MODPROBE_SMALL
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| 111 | help
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| 112 | depmod generates modules.dep (and potentially modules.alias
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| 113 | and modules.symbols) that contain dependency information
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| 114 | for modprobe.
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| 115 |
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| 116 | comment "Options common to multiple modutils"
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| 117 |
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| 118 | config FEATURE_2_4_MODULES
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| 119 | bool "Support version 2.2/2.4 Linux kernels"
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| 120 | default n
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| 121 | depends on INSMOD || RMMOD || LSMOD
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| 122 | help
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| 123 | Support module loading for 2.2.x and 2.4.x Linux kernels.
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| 124 | This increases size considerably. Say N unless you plan
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| 125 | to run ancient kernels.
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| 126 |
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| 127 | config FEATURE_INSMOD_TRY_MMAP
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| 128 | bool "Try to load module from a mmap'ed area"
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| 129 | default n
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| 130 | depends on INSMOD || MODPROBE_SMALL
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| 131 | help
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| 132 | This option causes module loading code to try to mmap
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| 133 | module first. If it does not work (for example,
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| 134 | it does not work for compressed modules), module will be read
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| 135 | (and unpacked if needed) into a memory block allocated by malloc.
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| 136 |
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| 137 | The only case when mmap works but malloc does not is when
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| 138 | you are trying to load a big module on a very memory-constrained
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| 139 | machine. Malloc will momentarily need 2x as much memory as mmap.
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| 140 |
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| 141 | Choosing N saves about 250 bytes of code (on 32-bit x86).
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| 142 |
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| 143 | config FEATURE_INSMOD_VERSION_CHECKING
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| 144 | bool "Enable module version checking"
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| 145 | default n
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| 146 | depends on FEATURE_2_4_MODULES && (INSMOD || MODPROBE)
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| 147 | help
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| 148 | Support checking of versions for modules. This is used to
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| 149 | ensure that the kernel and module are made for each other.
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| 150 |
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| 151 | config FEATURE_INSMOD_KSYMOOPS_SYMBOLS
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| 152 | bool "Add module symbols to kernel symbol table"
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| 153 | default n
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| 154 | depends on FEATURE_2_4_MODULES && (INSMOD || MODPROBE)
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| 155 | help
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| 156 | By adding module symbols to the kernel symbol table, Oops messages
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| 157 | occuring within kernel modules can be properly debugged. By enabling
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| 158 | this feature, module symbols will always be added to the kernel symbol
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| 159 | table for proper debugging support. If you are not interested in
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| 160 | Oops messages from kernel modules, say N.
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| 161 |
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| 162 | config FEATURE_INSMOD_LOADINKMEM
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| 163 | bool "In kernel memory optimization (uClinux only)"
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| 164 | default n
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| 165 | depends on FEATURE_2_4_MODULES && (INSMOD || MODPROBE)
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| 166 | help
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| 167 | This is a special uClinux only memory optimization that lets insmod
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| 168 | load the specified kernel module directly into kernel space, reducing
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| 169 | memory usage by preventing the need for two copies of the module
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| 170 | being loaded into memory.
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| 171 |
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| 172 | config FEATURE_INSMOD_LOAD_MAP
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| 173 | bool "Enable insmod load map (-m) option"
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| 174 | default n
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| 175 | depends on FEATURE_2_4_MODULES && INSMOD
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| 176 | help
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| 177 | Enabling this, one would be able to get a load map
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| 178 | output on stdout. This makes kernel module debugging
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| 179 | easier.
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| 180 | If you don't plan to debug kernel modules, you
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| 181 | don't need this option.
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| 182 |
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| 183 | config FEATURE_INSMOD_LOAD_MAP_FULL
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| 184 | bool "Symbols in load map"
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| 185 | default y
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| 186 | depends on FEATURE_INSMOD_LOAD_MAP && !MODPROBE_SMALL
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| 187 | help
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| 188 | Without this option, -m will only output section
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| 189 | load map. With this option, -m will also output
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| 190 | symbols load map.
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| 191 |
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| 192 | config FEATURE_CHECK_TAINTED_MODULE
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| 193 | bool "Support tainted module checking with new kernels"
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| 194 | default y
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| 195 | depends on (LSMOD || FEATURE_2_4_MODULES) && !MODPROBE_SMALL
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| 196 | help
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| 197 | Support checking for tainted modules. These are usually binary
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| 198 | only modules that will make the linux-kernel list ignore your
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| 199 | support request.
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| 200 | This option is required to support GPLONLY modules.
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| 201 |
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| 202 | config FEATURE_MODUTILS_ALIAS
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| 203 | bool "Support for module.aliases file"
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| 204 | default y
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| 205 | depends on DEPMOD || MODPROBE
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| 206 | help
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| 207 | Generate and parse modules.alias containing aliases for bus
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| 208 | identifiers:
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| 209 | alias pcmcia:m*c*f03fn*pfn*pa*pb*pc*pd* parport_cs
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| 210 |
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| 211 | and aliases for logical modules names e.g.:
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| 212 | alias padlock_aes aes
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| 213 | alias aes_i586 aes
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| 214 | alias aes_generic aes
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| 215 |
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| 216 | Say Y if unsure.
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| 217 |
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| 218 | config FEATURE_MODUTILS_SYMBOLS
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| 219 | bool "Support for module.symbols file"
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| 220 | default y
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| 221 | depends on DEPMOD || MODPROBE
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| 222 | help
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| 223 | Generate and parse modules.symbols containing aliases for
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| 224 | symbol_request() kernel calls, such as:
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| 225 | alias symbol:usb_sg_init usbcore
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| 226 |
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| 227 | Say Y if unsure.
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| 228 |
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| 229 | config DEFAULT_MODULES_DIR
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| 230 | string "Default directory containing modules"
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| 231 | default "/lib/modules"
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| 232 | depends on DEPMOD || MODPROBE || MODPROBE_SMALL || MODINFO
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| 233 | help
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| 234 | Directory that contains kernel modules.
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| 235 | Defaults to "/lib/modules"
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| 236 |
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| 237 | config DEFAULT_DEPMOD_FILE
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| 238 | string "Default name of modules.dep"
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| 239 | default "modules.dep"
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| 240 | depends on DEPMOD || MODPROBE || MODPROBE_SMALL || MODINFO
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| 241 | help
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| 242 | Filename that contains kernel modules dependencies.
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| 243 | Defaults to "modules.dep"
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| 244 |
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| 245 | endmenu
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