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    Contents of /trunk/mkinitrd-magellan/busybox/modutils/Config.in

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    Revision 984 - (show annotations) (download)
    Sun May 30 11:32:42 2010 UTC (13 years, 11 months ago) by niro
    File size: 7379 byte(s) 
    -updated to busybox-1.16.1 and enabled blkid/uuid support in default config
    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 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 FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE
    42 bool "Accept module options on modprobe command line"
    43 default n
    44 depends on MODPROBE_SMALL
    45 help
    46 Allow insmod and modprobe take module options from command line.
    47
    48 config FEATURE_MODPROBE_SMALL_CHECK_ALREADY_LOADED
    49 bool "Skip loading of already loaded modules"
    50 default n
    51 depends on MODPROBE_SMALL
    52 help
    53 Check if the module is already loaded.
    54
    55 config INSMOD
    56 bool "insmod"
    57 default n
    58 depends on !MODPROBE_SMALL
    59 help
    60 insmod is used to load specified modules in the running kernel.
    61
    62 config RMMOD
    63 bool "rmmod"
    64 default n
    65 depends on !MODPROBE_SMALL
    66 help
    67 rmmod is used to unload specified modules from the kernel.
    68
    69 config LSMOD
    70 bool "lsmod"
    71 default n
    72 depends on !MODPROBE_SMALL
    73 help
    74 lsmod is used to display a list of loaded modules.
    75
    76 config FEATURE_LSMOD_PRETTY_2_6_OUTPUT
    77 bool "Pretty output"
    78 default n
    79 depends on 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 MODPROBE
    86 bool "modprobe"
    87 default n
    88 depends on !MODPROBE_SMALL
    89 help
    90 Handle the loading of modules, and their dependencies on a high
    91 level.
    92
    93 config FEATURE_MODPROBE_BLACKLIST
    94 bool "Blacklist support"
    95 default n
    96 depends on 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 DEPMOD
    105 bool "depmod"
    106 default n
    107 depends on !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 FEATURE_2_4_MODULES
    116 bool "Support version 2.2/2.4 Linux kernels"
    117 default n
    118 depends on INSMOD || RMMOD || 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 FEATURE_INSMOD_TRY_MMAP
    125 bool "Try to load module from a mmap'ed area"
    126 default n
    127 depends on INSMOD || 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 FEATURE_INSMOD_VERSION_CHECKING
    141 bool "Enable module version checking"
    142 default n
    143 depends on FEATURE_2_4_MODULES && (INSMOD || 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 FEATURE_INSMOD_KSYMOOPS_SYMBOLS
    149 bool "Add module symbols to kernel symbol table"
    150 default n
    151 depends on FEATURE_2_4_MODULES && (INSMOD || 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 FEATURE_INSMOD_LOADINKMEM
    160 bool "In kernel memory optimization (uClinux only)"
    161 default n
    162 depends on FEATURE_2_4_MODULES && (INSMOD || 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 FEATURE_INSMOD_LOAD_MAP
    170 bool "Enable insmod load map (-m) option"
    171 default n
    172 depends on FEATURE_2_4_MODULES && 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 FEATURE_INSMOD_LOAD_MAP_FULL
    181 bool "Symbols in load map"
    182 default y
    183 depends on FEATURE_INSMOD_LOAD_MAP && !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 FEATURE_CHECK_TAINTED_MODULE
    190 bool "Support tainted module checking with new kernels"
    191 default y
    192 depends on (LSMOD || FEATURE_2_4_MODULES) && !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 FEATURE_MODUTILS_ALIAS
    200 bool "Support for module.aliases file"
    201 default y
    202 depends on DEPMOD || 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 FEATURE_MODUTILS_SYMBOLS
    216 bool "Support for module.symbols file"
    217 default y
    218 depends on DEPMOD || 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 DEFAULT_MODULES_DIR
    227 string "Default directory containing modules"
    228 default "/lib/modules"
    229 depends on DEPMOD || MODPROBE || MODPROBE_SMALL
    230 help
    231 Directory that contains kernel modules.
    232 Defaults to "/lib/modules"
    233
    234 config DEFAULT_DEPMOD_FILE
    235 string "Default name of modules.dep"
    236 default "modules.dep"
    237 depends on DEPMOD || MODPROBE || MODPROBE_SMALL
    238 help
    239 Filename that contains kernel modules dependencies.
    240 Defaults to "modules.dep"
    241
    242 endmenu