2 # For a description of the syntax of this configuration file,
3 # see scripts/kbuild/config-language.txt.
6 menu "Linux Module Utilities"
7 depends on PLATFORM_LINUX
12 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 As of 2008-07, this code is experimental. It is 14kb smaller
42 than "non-small" modutils.
44 config FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE
45 bool "Accept module options on modprobe command line"
47 depends on MODPROBE_SMALL
49 Allow insmod and modprobe take module options from command line.
51 config FEATURE_MODPROBE_SMALL_CHECK_ALREADY_LOADED
52 bool "Skip loading of already loaded modules"
54 depends on MODPROBE_SMALL
56 Check if the module is already loaded.
61 depends on !MODPROBE_SMALL
63 insmod is used to load specified modules in the running kernel.
68 depends on !MODPROBE_SMALL
70 rmmod is used to unload specified modules from the kernel.
75 depends on !MODPROBE_SMALL
77 lsmod is used to display a list of loaded modules.
79 config FEATURE_LSMOD_PRETTY_2_6_OUTPUT
84 This option makes output format of lsmod adjusted to
85 the format of module-init-tools for Linux kernel 2.6.
86 Increases size somewhat.
91 depends on !MODPROBE_SMALL
93 Handle the loading of modules, and their dependencies on a high
96 config FEATURE_MODPROBE_BLACKLIST
97 bool "Blacklist support"
101 Say 'y' here to enable support for the 'blacklist' command in
102 modprobe.conf. This prevents the alias resolver to resolve
103 blacklisted modules. This is useful if you want to prevent your
104 hardware autodetection scripts to load modules like evdev, frame
110 depends on !MODPROBE_SMALL
112 depmod generates modules.dep (and potentially modules.alias
113 and modules.symbols) that contain dependency information
116 comment "Options common to multiple modutils"
118 config FEATURE_2_4_MODULES
119 bool "Support version 2.2/2.4 Linux kernels"
121 depends on INSMOD || RMMOD || LSMOD
123 Support module loading for 2.2.x and 2.4.x Linux kernels.
124 This increases size considerably. Say N unless you plan
125 to run ancient kernels.
127 config FEATURE_INSMOD_TRY_MMAP
128 bool "Try to load module from a mmap'ed area"
130 depends on INSMOD || MODPROBE_SMALL
132 This option causes module loading code to try to mmap
133 module first. If it does not work (for example,
134 it does not work for compressed modules), module will be read
135 (and unpacked if needed) into a memory block allocated by malloc.
137 The only case when mmap works but malloc does not is when
138 you are trying to load a big module on a very memory-constrained
139 machine. Malloc will momentarily need 2x as much memory as mmap.
141 Choosing N saves about 250 bytes of code (on 32-bit x86).
143 config FEATURE_INSMOD_VERSION_CHECKING
144 bool "Enable module version checking"
146 depends on FEATURE_2_4_MODULES && (INSMOD || MODPROBE)
148 Support checking of versions for modules. This is used to
149 ensure that the kernel and module are made for each other.
151 config FEATURE_INSMOD_KSYMOOPS_SYMBOLS
152 bool "Add module symbols to kernel symbol table"
154 depends on FEATURE_2_4_MODULES && (INSMOD || MODPROBE)
156 By adding module symbols to the kernel symbol table, Oops messages
157 occuring within kernel modules can be properly debugged. By enabling
158 this feature, module symbols will always be added to the kernel symbol
159 table for proper debugging support. If you are not interested in
160 Oops messages from kernel modules, say N.
162 config FEATURE_INSMOD_LOADINKMEM
163 bool "In kernel memory optimization (uClinux only)"
165 depends on FEATURE_2_4_MODULES && (INSMOD || MODPROBE)
167 This is a special uClinux only memory optimization that lets insmod
168 load the specified kernel module directly into kernel space, reducing
169 memory usage by preventing the need for two copies of the module
170 being loaded into memory.
172 config FEATURE_INSMOD_LOAD_MAP
173 bool "Enable insmod load map (-m) option"
175 depends on FEATURE_2_4_MODULES && INSMOD
177 Enabling this, one would be able to get a load map
178 output on stdout. This makes kernel module debugging
180 If you don't plan to debug kernel modules, you
181 don't need this option.
183 config FEATURE_INSMOD_LOAD_MAP_FULL
184 bool "Symbols in load map"
186 depends on FEATURE_INSMOD_LOAD_MAP && !MODPROBE_SMALL
188 Without this option, -m will only output section
189 load map. With this option, -m will also output
192 config FEATURE_CHECK_TAINTED_MODULE
193 bool "Support tainted module checking with new kernels"
195 depends on (LSMOD || FEATURE_2_4_MODULES) && !MODPROBE_SMALL
197 Support checking for tainted modules. These are usually binary
198 only modules that will make the linux-kernel list ignore your
200 This option is required to support GPLONLY modules.
202 config FEATURE_MODUTILS_ALIAS
203 bool "Support for module.aliases file"
205 depends on DEPMOD || MODPROBE
207 Generate and parse modules.alias containing aliases for bus
209 alias pcmcia:m*c*f03fn*pfn*pa*pb*pc*pd* parport_cs
211 and aliases for logical modules names e.g.:
212 alias padlock_aes aes
214 alias aes_generic aes
218 config FEATURE_MODUTILS_SYMBOLS
219 bool "Support for module.symbols file"
221 depends on DEPMOD || MODPROBE
223 Generate and parse modules.symbols containing aliases for
224 symbol_request() kernel calls, such as:
225 alias symbol:usb_sg_init usbcore
229 config DEFAULT_MODULES_DIR
230 string "Default directory containing modules"
231 default "/lib/modules"
232 depends on DEPMOD || MODPROBE || MODPROBE_SMALL || MODINFO
234 Directory that contains kernel modules.
235 Defaults to "/lib/modules"
237 config DEFAULT_DEPMOD_FILE
238 string "Default name of modules.dep"
239 default "modules.dep"
240 depends on DEPMOD || MODPROBE || MODPROBE_SMALL || MODINFO
242 Filename that contains kernel modules dependencies.
243 Defaults to "modules.dep"