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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