LXR busybox/modutils/Config.src

   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