2 # For a description of the syntax of this configuration file,
3 # see scripts/kbuild/config-language.txt.
6 menu "Linux Module Utilities"
11 bool "Simplified modutils"
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_).
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.
30 NB: modules.dep.bb file format is not compatible
31 with modules.dep file as created/used by standard module tools.
33 Additional module parameters can be stored in
34 /etc/modules/$module_name files.
36 Apart from modprobe, other utilities are also provided:
37 - insmod is an alias to modprobe
38 - rmmod is an alias to modprobe -r
39 - depmod generates modules.dep.bb
41 config FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE
42 bool "Accept module options on modprobe command line"
44 depends on MODPROBE_SMALL
47 Allow insmod and modprobe take module options from command line.
49 config FEATURE_MODPROBE_SMALL_CHECK_ALREADY_LOADED
50 bool "Skip loading of already loaded modules"
52 depends on MODPROBE_SMALL
54 Check if the module is already loaded.
59 depends on !MODPROBE_SMALL
62 insmod is used to load specified modules in the running kernel.
67 depends on !MODPROBE_SMALL
70 rmmod is used to unload specified modules from the kernel.
75 depends on !MODPROBE_SMALL
78 lsmod is used to display a list of loaded modules.
80 config FEATURE_LSMOD_PRETTY_2_6_OUTPUT
86 This option makes output format of lsmod adjusted to
87 the format of module-init-tools for Linux kernel 2.6.
88 Increases size somewhat.
93 depends on !MODPROBE_SMALL
96 Handle the loading of modules, and their dependencies on a high
99 config FEATURE_MODPROBE_BLACKLIST
100 bool "Blacklist support"
103 select PLATFORM_LINUX
105 Say 'y' here to enable support for the 'blacklist' command in
106 modprobe.conf. This prevents the alias resolver to resolve
107 blacklisted modules. This is useful if you want to prevent your
108 hardware autodetection scripts to load modules like evdev, frame
114 depends on !MODPROBE_SMALL
115 select PLATFORM_LINUX
117 depmod generates modules.dep (and potentially modules.alias
118 and modules.symbols) that contain dependency information
121 comment "Options common to multiple modutils"
123 config FEATURE_2_4_MODULES
124 bool "Support version 2.2/2.4 Linux kernels"
126 depends on INSMOD || RMMOD || LSMOD
127 select PLATFORM_LINUX
129 Support module loading for 2.2.x and 2.4.x Linux kernels.
130 This increases size considerably. Say N unless you plan
131 to run ancient kernels.
133 config FEATURE_INSMOD_TRY_MMAP
134 bool "Try to load module from a mmap'ed area"
136 depends on INSMOD || MODPROBE_SMALL
137 select PLATFORM_LINUX
139 This option causes module loading code to try to mmap
140 module first. If it does not work (for example,
141 it does not work for compressed modules), module will be read
142 (and unpacked if needed) into a memory block allocated by malloc.
144 The only case when mmap works but malloc does not is when
145 you are trying to load a big module on a very memory-constrained
146 machine. Malloc will momentarily need 2x as much memory as mmap.
148 Choosing N saves about 250 bytes of code (on 32-bit x86).
150 config FEATURE_INSMOD_VERSION_CHECKING
151 bool "Enable module version checking"
153 depends on FEATURE_2_4_MODULES && (INSMOD || MODPROBE)
154 select PLATFORM_LINUX
156 Support checking of versions for modules. This is used to
157 ensure that the kernel and module are made for each other.
159 config FEATURE_INSMOD_KSYMOOPS_SYMBOLS
160 bool "Add module symbols to kernel symbol table"
162 depends on FEATURE_2_4_MODULES && (INSMOD || MODPROBE)
163 select PLATFORM_LINUX
165 By adding module symbols to the kernel symbol table, Oops messages
166 occuring within kernel modules can be properly debugged. By enabling
167 this feature, module symbols will always be added to the kernel symbol
168 table for proper debugging support. If you are not interested in
169 Oops messages from kernel modules, say N.
171 config FEATURE_INSMOD_LOADINKMEM
172 bool "In kernel memory optimization (uClinux only)"
174 depends on FEATURE_2_4_MODULES && (INSMOD || MODPROBE)
175 select PLATFORM_LINUX
177 This is a special uClinux only memory optimization that lets insmod
178 load the specified kernel module directly into kernel space, reducing
179 memory usage by preventing the need for two copies of the module
180 being loaded into memory.
182 config FEATURE_INSMOD_LOAD_MAP
183 bool "Enable insmod load map (-m) option"
185 depends on FEATURE_2_4_MODULES && INSMOD
186 select PLATFORM_LINUX
188 Enabling this, one would be able to get a load map
189 output on stdout. This makes kernel module debugging
191 If you don't plan to debug kernel modules, you
192 don't need this option.
194 config FEATURE_INSMOD_LOAD_MAP_FULL
195 bool "Symbols in load map"
197 depends on FEATURE_INSMOD_LOAD_MAP && !MODPROBE_SMALL
198 select PLATFORM_LINUX
200 Without this option, -m will only output section
201 load map. With this option, -m will also output
204 config FEATURE_CHECK_TAINTED_MODULE
205 bool "Support tainted module checking with new kernels"
207 depends on (LSMOD || FEATURE_2_4_MODULES) && !MODPROBE_SMALL
208 select PLATFORM_LINUX
210 Support checking for tainted modules. These are usually binary
211 only modules that will make the linux-kernel list ignore your
213 This option is required to support GPLONLY modules.
215 config FEATURE_MODUTILS_ALIAS
216 bool "Support for module.aliases file"
218 depends on DEPMOD || MODPROBE
219 select PLATFORM_LINUX
221 Generate and parse modules.alias containing aliases for bus
223 alias pcmcia:m*c*f03fn*pfn*pa*pb*pc*pd* parport_cs
225 and aliases for logical modules names e.g.:
226 alias padlock_aes aes
228 alias aes_generic aes
232 config FEATURE_MODUTILS_SYMBOLS
233 bool "Support for module.symbols file"
235 depends on DEPMOD || MODPROBE
236 select PLATFORM_LINUX
238 Generate and parse modules.symbols containing aliases for
239 symbol_request() kernel calls, such as:
240 alias symbol:usb_sg_init usbcore
244 config DEFAULT_MODULES_DIR
245 string "Default directory containing modules"
246 default "/lib/modules"
247 depends on DEPMOD || MODPROBE || MODPROBE_SMALL || MODINFO
249 Directory that contains kernel modules.
250 Defaults to "/lib/modules"
252 config DEFAULT_DEPMOD_FILE
253 string "Default name of modules.dep"
254 default "modules.dep"
255 depends on DEPMOD || MODPROBE || MODPROBE_SMALL || MODINFO
257 Filename that contains kernel modules dependencies.
258 Defaults to "modules.dep"