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1#
2# For a description of the syntax of this configuration file,
3# see scripts/kbuild/config-language.txt.
4#
5
6menu "Linux Module Utilities"
7
8INSERT
9
10config MODPROBE_SMALL
11 bool "Simplified modutils"
12 default y
13 help
14 Simplified modutils.
15
16 With this option modprobe does not require modules.dep file
17 and does not use /etc/modules.conf file.
18 It scans module files in /lib/modules/`uname -r` and
19 determines dependencies and module alias names on the fly.
20 This may make module loading slower, most notably
21 when one needs to load module by alias (this requires
22 scanning through module _bodies_).
23
24 At the first attempt to load a module by alias modprobe
25 will try to generate modules.dep.bb file in order to speed up
26 future loads by alias. Failure to do so (read-only /lib/modules,
27 etc) is not reported, and future modprobes will be slow too.
28
29 NB: modules.dep.bb file format is not compatible
30 with modules.dep file as created/used by standard module tools.
31
32 Additional module parameters can be stored in
33 /etc/modules/$module_name files.
34
35 Apart from modprobe, other utilities are also provided:
36 - insmod is an alias to modprobe
37 - rmmod is an alias to modprobe -r
38 - depmod generates modules.dep.bb
39
40 As of 2008-07, this code is experimental. It is 14kb smaller
41 than "non-small" modutils.
42
43config FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE
44 bool "Accept module options on modprobe command line"
45 default y
46 depends on MODPROBE_SMALL
47 help
48 Allow insmod and modprobe take module options from command line.
49
50config FEATURE_MODPROBE_SMALL_CHECK_ALREADY_LOADED
51 bool "Skip loading of already loaded modules"
52 default y
53 depends on MODPROBE_SMALL
54 help
55 Check if the module is already loaded.
56
57config INSMOD
58 bool "insmod"
59 default n
60 depends on !MODPROBE_SMALL
61 help
62 insmod is used to load specified modules in the running kernel.
63
64config RMMOD
65 bool "rmmod"
66 default n
67 depends on !MODPROBE_SMALL
68 help
69 rmmod is used to unload specified modules from the kernel.
70
71config LSMOD
72 bool "lsmod"
73 default n
74 depends on !MODPROBE_SMALL
75 help
76 lsmod is used to display a list of loaded modules.
77
78config FEATURE_LSMOD_PRETTY_2_6_OUTPUT
79 bool "Pretty output"
80 default n
81 depends on LSMOD
82 help
83 This option makes output format of lsmod adjusted to
84 the format of module-init-tools for Linux kernel 2.6.
85 Increases size somewhat.
86
87config MODPROBE
88 bool "modprobe"
89 default n
90 depends on !MODPROBE_SMALL
91 help
92 Handle the loading of modules, and their dependencies on a high
93 level.
94
95config FEATURE_MODPROBE_BLACKLIST
96 bool "Blacklist support"
97 default n
98 depends on MODPROBE
99 help
100 Say 'y' here to enable support for the 'blacklist' command in
101 modprobe.conf. This prevents the alias resolver to resolve
102 blacklisted modules. This is useful if you want to prevent your
103 hardware autodetection scripts to load modules like evdev, frame
104 buffer drivers etc.
105
106config DEPMOD
107 bool "depmod"
108 default n
109 depends on !MODPROBE_SMALL
110 help
111 depmod generates modules.dep (and potentially modules.alias
112 and modules.symbols) that contain dependency information
113 for modprobe.
114
115comment "Options common to multiple modutils"
116
117config FEATURE_2_4_MODULES
118 bool "Support version 2.2/2.4 Linux kernels"
119 default n
120 depends on INSMOD || RMMOD || LSMOD
121 help
122 Support module loading for 2.2.x and 2.4.x Linux kernels.
123 This increases size considerably. Say N unless you plan
124 to run ancient kernels.
125
126config FEATURE_INSMOD_TRY_MMAP
127 bool "Try to load module from a mmap'ed area"
128 default n
129 depends on INSMOD || MODPROBE_SMALL
130 help
131 This option causes module loading code to try to mmap
132 module first. If it does not work (for example,
133 it does not work for compressed modules), module will be read
134 (and unpacked if needed) into a memory block allocated by malloc.
135
136 The only case when mmap works but malloc does not is when
137 you are trying to load a big module on a very memory-constrained
138 machine. Malloc will momentarily need 2x as much memory as mmap.
139
140 Choosing N saves about 250 bytes of code (on 32-bit x86).
141
142config FEATURE_INSMOD_VERSION_CHECKING
143 bool "Enable module version checking"
144 default n
145 depends on FEATURE_2_4_MODULES && (INSMOD || MODPROBE)
146 help
147 Support checking of versions for modules. This is used to
148 ensure that the kernel and module are made for each other.
149
150config FEATURE_INSMOD_KSYMOOPS_SYMBOLS
151 bool "Add module symbols to kernel symbol table"
152 default n
153 depends on FEATURE_2_4_MODULES && (INSMOD || MODPROBE)
154 help
155 By adding module symbols to the kernel symbol table, Oops messages
156 occuring within kernel modules can be properly debugged. By enabling
157 this feature, module symbols will always be added to the kernel symbol
158 table for proper debugging support. If you are not interested in
159 Oops messages from kernel modules, say N.
160
161config FEATURE_INSMOD_LOADINKMEM
162 bool "In kernel memory optimization (uClinux only)"
163 default n
164 depends on FEATURE_2_4_MODULES && (INSMOD || MODPROBE)
165 help
166 This is a special uClinux only memory optimization that lets insmod
167 load the specified kernel module directly into kernel space, reducing
168 memory usage by preventing the need for two copies of the module
169 being loaded into memory.
170
171config FEATURE_INSMOD_LOAD_MAP
172 bool "Enable insmod load map (-m) option"
173 default n
174 depends on FEATURE_2_4_MODULES && INSMOD
175 help
176 Enabling this, one would be able to get a load map
177 output on stdout. This makes kernel module debugging
178 easier.
179 If you don't plan to debug kernel modules, you
180 don't need this option.
181
182config FEATURE_INSMOD_LOAD_MAP_FULL
183 bool "Symbols in load map"
184 default y
185 depends on FEATURE_INSMOD_LOAD_MAP && !MODPROBE_SMALL
186 help
187 Without this option, -m will only output section
188 load map. With this option, -m will also output
189 symbols load map.
190
191config FEATURE_CHECK_TAINTED_MODULE
192 bool "Support tainted module checking with new kernels"
193 default y
194 depends on (LSMOD || FEATURE_2_4_MODULES) && !MODPROBE_SMALL
195 help
196 Support checking for tainted modules. These are usually binary
197 only modules that will make the linux-kernel list ignore your
198 support request.
199 This option is required to support GPLONLY modules.
200
201config FEATURE_MODUTILS_ALIAS
202 bool "Support for module.aliases file"
203 default y
204 depends on DEPMOD || MODPROBE
205 help
206 Generate and parse modules.alias containing aliases for bus
207 identifiers:
208 alias pcmcia:m*c*f03fn*pfn*pa*pb*pc*pd* parport_cs
209
210 and aliases for logical modules names e.g.:
211 alias padlock_aes aes
212 alias aes_i586 aes
213 alias aes_generic aes
214
215 Say Y if unsure.
216
217config FEATURE_MODUTILS_SYMBOLS
218 bool "Support for module.symbols file"
219 default y
220 depends on DEPMOD || MODPROBE
221 help
222 Generate and parse modules.symbols containing aliases for
223 symbol_request() kernel calls, such as:
224 alias symbol:usb_sg_init usbcore
225
226 Say Y if unsure.
227
228config DEFAULT_MODULES_DIR
229 string "Default directory containing modules"
230 default "/lib/modules"
231 depends on DEPMOD || MODPROBE || MODPROBE_SMALL
232 help
233 Directory that contains kernel modules.
234 Defaults to "/lib/modules"
235
236config DEFAULT_DEPMOD_FILE
237 string "Default name of modules.dep"
238 default "modules.dep"
239 depends on DEPMOD || MODPROBE || MODPROBE_SMALL
240 help
241 Filename that contains kernel modules dependencies.
242 Defaults to "modules.dep"
243
244endmenu