package/busybox/config/modutils/Config.in

   1 #
   2 # For a description of the syntax of this configuration file,
   3 # see scripts/kbuild/config-language.txt.
   4 #
   5
   6 menu "Linux Module Utilities"
   7
   8 config BUSYBOX_CONFIG_MODPROBE_SMALL
   9         bool "Simplified modutils"
  10         default n
  11         help
  12           Simplified modutils.
  13
  14           With this option modprobe does not require modules.dep file
  15           and does not use /etc/modules.conf file.
  16           It scans module files in /lib/modules/`uname -r` and
  17           determines dependencies and module alias names on the fly.
  18           This may make module loading slower, most notably
  19           when one needs to load module by alias (this requires
  20           scanning through module _bodies_).
  21
  22           At the first attempt to load a module by alias modprobe
  23           will try to generate modules.dep.bb file in order to speed up
  24           future loads by alias. Failure to do so (read-only /lib/modules,
  25           etc) is not reported, and future modprobes will be slow too.
  26
  27           NB: modules.dep.bb file format is not compatible
  28           with modules.dep file as created/used by standard module tools.
  29
  30           Additional module parameters can be stored in
  31           /etc/modules/$module_name files.
  32
  33           Apart from modprobe, other utilities are also provided:
  34           - insmod is an alias to modprobe
  35           - rmmod is an alias to modprobe -r
  36           - depmod generates modules.dep.bb
  37
  38           As of 2008-07, this code is experimental. It is 14kb smaller
  39           than "non-small" modutils.
  40
  41 config BUSYBOX_CONFIG_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE
  42         bool "Accept module options on modprobe command line"
  43         default n
  44         depends on BUSYBOX_CONFIG_MODPROBE_SMALL
  45         help
  46           Allow insmod and modprobe take module options from command line.
  47
  48 config BUSYBOX_CONFIG_FEATURE_MODPROBE_SMALL_CHECK_ALREADY_LOADED
  49         bool "Skip loading of already loaded modules"
  50         default n
  51         depends on BUSYBOX_CONFIG_MODPROBE_SMALL
  52         help
  53           Check if the module is already loaded.
  54
  55 config BUSYBOX_CONFIG_INSMOD
  56         bool "insmod"
  57         default y
  58         depends on !BUSYBOX_CONFIG_MODPROBE_SMALL
  59         help
  60           insmod is used to load specified modules in the running kernel.
  61
  62 config BUSYBOX_CONFIG_RMMOD
  63         bool "rmmod"
  64         default y
  65         depends on !BUSYBOX_CONFIG_MODPROBE_SMALL
  66         help
  67           rmmod is used to unload specified modules from the kernel.
  68
  69 config BUSYBOX_CONFIG_LSMOD
  70         bool "lsmod"
  71         default y
  72         depends on !BUSYBOX_CONFIG_MODPROBE_SMALL
  73         help
  74           lsmod is used to display a list of loaded modules.
  75
  76 config BUSYBOX_CONFIG_FEATURE_LSMOD_PRETTY_2_6_OUTPUT
  77         bool "Pretty output"
  78         default y
  79         depends on BUSYBOX_CONFIG_LSMOD
  80         help
  81           This option makes output format of lsmod adjusted to
  82           the format of module-init-tools for Linux kernel 2.6.
  83           Increases size somewhat.
  84
  85 config BUSYBOX_CONFIG_MODPROBE
  86         bool "modprobe"
  87         default n
  88         depends on !BUSYBOX_CONFIG_MODPROBE_SMALL
  89         help
  90           Handle the loading of modules, and their dependencies on a high
  91           level.
  92
  93 config BUSYBOX_CONFIG_FEATURE_MODPROBE_BLACKLIST
  94         bool "Blacklist support"
  95         default n
  96         depends on BUSYBOX_CONFIG_MODPROBE
  97         help
  98           Say 'y' here to enable support for the 'blacklist' command in
  99           modprobe.conf. This prevents the alias resolver to resolve
 100           blacklisted modules. This is useful if you want to prevent your
 101           hardware autodetection scripts to load modules like evdev, frame
 102           buffer drivers etc.
 103
 104 config BUSYBOX_CONFIG_DEPMOD
 105         bool "depmod"
 106         default n
 107         depends on !BUSYBOX_CONFIG_MODPROBE_SMALL
 108         help
 109           depmod generates modules.dep (and potentially modules.alias
 110           and modules.symbols) that contain dependency information
 111           for modprobe.
 112
 113 comment "Options common to multiple modutils"
 114
 115 config BUSYBOX_CONFIG_FEATURE_2_4_MODULES
 116         bool "Support version 2.2/2.4 Linux kernels"
 117         default n
 118         depends on BUSYBOX_CONFIG_INSMOD || BUSYBOX_CONFIG_RMMOD || BUSYBOX_CONFIG_LSMOD
 119         help
 120           Support module loading for 2.2.x and 2.4.x Linux kernels.
 121           This increases size considerably. Say N unless you plan
 122           to run ancient kernels.
 123
 124 config BUSYBOX_CONFIG_FEATURE_INSMOD_TRY_MMAP
 125         bool "Try to load module from a mmap'ed area"
 126         default n
 127         depends on BUSYBOX_CONFIG_INSMOD || BUSYBOX_CONFIG_MODPROBE_SMALL
 128         help
 129           This option causes module loading code to try to mmap
 130           module first. If it does not work (for example,
 131           it does not work for compressed modules), module will be read
 132           (and unpacked if needed) into a memory block allocated by malloc.
 133
 134           The only case when mmap works but malloc does not is when
 135           you are trying to load a big module on a very memory-constrained
 136           machine. Malloc will momentarily need 2x as much memory as mmap.
 137
 138           Choosing N saves about 250 bytes of code (on 32-bit x86).
 139
 140 config BUSYBOX_CONFIG_FEATURE_INSMOD_VERSION_CHECKING
 141         bool "Enable module version checking"
 142         default n
 143         depends on BUSYBOX_CONFIG_FEATURE_2_4_MODULES && (BUSYBOX_CONFIG_INSMOD || BUSYBOX_CONFIG_MODPROBE)
 144         help
 145           Support checking of versions for modules. This is used to
 146           ensure that the kernel and module are made for each other.
 147
 148 config BUSYBOX_CONFIG_FEATURE_INSMOD_KSYMOOPS_SYMBOLS
 149         bool "Add module symbols to kernel symbol table"
 150         default n
 151         depends on BUSYBOX_CONFIG_FEATURE_2_4_MODULES && (BUSYBOX_CONFIG_INSMOD || BUSYBOX_CONFIG_MODPROBE)
 152         help
 153           By adding module symbols to the kernel symbol table, Oops messages
 154           occuring within kernel modules can be properly debugged. By enabling
 155           this feature, module symbols will always be added to the kernel symbol
 156           table for proper debugging support. If you are not interested in
 157           Oops messages from kernel modules, say N.
 158
 159 config BUSYBOX_CONFIG_FEATURE_INSMOD_LOADINKMEM
 160         bool "In kernel memory optimization (uClinux only)"
 161         default n
 162         depends on BUSYBOX_CONFIG_FEATURE_2_4_MODULES && (BUSYBOX_CONFIG_INSMOD || BUSYBOX_CONFIG_MODPROBE)
 163         help
 164           This is a special uClinux only memory optimization that lets insmod
 165           load the specified kernel module directly into kernel space, reducing
 166           memory usage by preventing the need for two copies of the module
 167           being loaded into memory.
 168
 169 config BUSYBOX_CONFIG_FEATURE_INSMOD_LOAD_MAP
 170         bool "Enable insmod load map (-m) option"
 171         default n
 172         depends on BUSYBOX_CONFIG_FEATURE_2_4_MODULES && BUSYBOX_CONFIG_INSMOD
 173         help
 174           Enabling this, one would be able to get a load map
 175           output on stdout. This makes kernel module debugging
 176           easier.
 177           If you don't plan to debug kernel modules, you
 178           don't need this option.
 179
 180 config BUSYBOX_CONFIG_FEATURE_INSMOD_LOAD_MAP_FULL
 181         bool "Symbols in load map"
 182         default n
 183         depends on BUSYBOX_CONFIG_FEATURE_INSMOD_LOAD_MAP && !BUSYBOX_CONFIG_MODPROBE_SMALL
 184         help
 185           Without this option, -m will only output section
 186           load map. With this option, -m will also output
 187           symbols load map.
 188
 189 config BUSYBOX_CONFIG_FEATURE_CHECK_TAINTED_MODULE
 190         bool "Support tainted module checking with new kernels"
 191         default y
 192         depends on (BUSYBOX_CONFIG_LSMOD || BUSYBOX_CONFIG_FEATURE_2_4_MODULES) && !BUSYBOX_CONFIG_MODPROBE_SMALL
 193         help
 194           Support checking for tainted modules. These are usually binary
 195           only modules that will make the linux-kernel list ignore your
 196           support request.
 197           This option is required to support GPLONLY modules.
 198
 199 config BUSYBOX_CONFIG_FEATURE_MODUTILS_ALIAS
 200         bool "Support for module.aliases file"
 201         default n
 202         depends on BUSYBOX_CONFIG_DEPMOD || BUSYBOX_CONFIG_MODPROBE
 203         help
 204           Generate and parse modules.alias containing aliases for bus
 205           identifiers:
 206             alias pcmcia:m*c*f03fn*pfn*pa*pb*pc*pd* parport_cs
 207
 208           and aliases for logical modules names e.g.:
 209             alias padlock_aes aes
 210             alias aes_i586 aes
 211             alias aes_generic aes
 212
 213           Say Y if unsure.
 214
 215 config BUSYBOX_CONFIG_FEATURE_MODUTILS_SYMBOLS
 216         bool "Support for module.symbols file"
 217         default n
 218         depends on BUSYBOX_CONFIG_DEPMOD || BUSYBOX_CONFIG_MODPROBE
 219         help
 220           Generate and parse modules.symbols containing aliases for
 221           symbol_request() kernel calls, such as:
 222             alias symbol:usb_sg_init usbcore
 223
 224           Say Y if unsure.
 225
 226 config BUSYBOX_CONFIG_DEFAULT_MODULES_DIR
 227         string "Default directory containing modules"
 228         default "/lib/modules"
 229         depends on BUSYBOX_CONFIG_DEPMOD || BUSYBOX_CONFIG_INSMOD || BUSYBOX_CONFIG_MODPROBE || BUSYBOX_CONFIG_MODPROBE_SMALL
 230         help
 231           Directory that contains kernel modules.
 232           Defaults to "/lib/modules"
 233
 234 config BUSYBOX_CONFIG_DEFAULT_DEPMOD_FILE
 235         string "Default name of modules.dep"
 236         default "modules.dep"
 237         depends on BUSYBOX_CONFIG_DEPMOD || BUSYBOX_CONFIG_MODPROBE || BUSYBOX_CONFIG_MODPROBE_SMALL
 238         help
 239           Filename that contains kernel modules dependencies.
 240           Defaults to "modules.dep"
 241
 242 endmenu