blob: 84ff34a08224845907f824d47a3190527698dd75
1 | # |
2 | # For a description of the syntax of this configuration file, |
3 | # see scripts/kbuild/config-language.txt. |
4 | # |
5 | |
6 | menu "Linux Module Utilities" |
7 | |
8 | config MODPROBE_SMALL |
9 | bool "Simplified modutils" |
10 | default y |
11 | select PLATFORM_LINUX |
12 | help |
13 | Simplified modutils. |
14 | |
15 | With this option modprobe does not require modules.dep file |
16 | and does not use /etc/modules.conf file. |
17 | It scans module files in /lib/modules/`uname -r` and |
18 | determines dependencies and module alias names on the fly. |
19 | This may make module loading slower, most notably |
20 | when one needs to load module by alias (this requires |
21 | scanning through module _bodies_). |
22 | |
23 | At the first attempt to load a module by alias modprobe |
24 | will try to generate modules.dep.bb file in order to speed up |
25 | future loads by alias. Failure to do so (read-only /lib/modules, |
26 | etc) is not reported, and future modprobes will be slow too. |
27 | |
28 | NB: modules.dep.bb file format is not compatible |
29 | with modules.dep file as created/used by standard module tools. |
30 | |
31 | Additional module parameters can be stored in |
32 | /etc/modules/$module_name files. |
33 | |
34 | Apart from modprobe, other utilities are also provided: |
35 | - insmod is an alias to modprobe |
36 | - rmmod is an alias to modprobe -r |
37 | - depmod generates modules.dep.bb |
38 | |
39 | INSERT |
40 | |
41 | comment "Options common to multiple modutils" |
42 | |
43 | config FEATURE_2_4_MODULES |
44 | bool "Support version 2.2/2.4 Linux kernels" |
45 | default n |
46 | depends on INSMOD || RMMOD || LSMOD |
47 | select PLATFORM_LINUX |
48 | help |
49 | Support module loading for 2.2.x and 2.4.x Linux kernels. |
50 | This increases size considerably. Say N unless you plan |
51 | to run ancient kernels. |
52 | |
53 | config FEATURE_INSMOD_TRY_MMAP |
54 | bool "Try to load module from a mmap'ed area" |
55 | default n |
56 | depends on INSMOD || MODPROBE_SMALL |
57 | select PLATFORM_LINUX |
58 | help |
59 | This option causes module loading code to try to mmap |
60 | module first. If it does not work (for example, |
61 | it does not work for compressed modules), module will be read |
62 | (and unpacked if needed) into a memory block allocated by malloc. |
63 | |
64 | The only case when mmap works but malloc does not is when |
65 | you are trying to load a big module on a very memory-constrained |
66 | machine. Malloc will momentarily need 2x as much memory as mmap. |
67 | |
68 | Choosing N saves about 250 bytes of code (on 32-bit x86). |
69 | |
70 | config FEATURE_INSMOD_VERSION_CHECKING |
71 | bool "Enable module version checking" |
72 | default n |
73 | depends on FEATURE_2_4_MODULES && (INSMOD || MODPROBE) |
74 | select PLATFORM_LINUX |
75 | help |
76 | Support checking of versions for modules. This is used to |
77 | ensure that the kernel and module are made for each other. |
78 | |
79 | config FEATURE_INSMOD_KSYMOOPS_SYMBOLS |
80 | bool "Add module symbols to kernel symbol table" |
81 | default n |
82 | depends on FEATURE_2_4_MODULES && (INSMOD || MODPROBE) |
83 | select PLATFORM_LINUX |
84 | help |
85 | By adding module symbols to the kernel symbol table, Oops messages |
86 | occuring within kernel modules can be properly debugged. By enabling |
87 | this feature, module symbols will always be added to the kernel symbol |
88 | table for proper debugging support. If you are not interested in |
89 | Oops messages from kernel modules, say N. |
90 | |
91 | config FEATURE_INSMOD_LOADINKMEM |
92 | bool "In kernel memory optimization (uClinux only)" |
93 | default n |
94 | depends on FEATURE_2_4_MODULES && (INSMOD || MODPROBE) |
95 | select PLATFORM_LINUX |
96 | help |
97 | This is a special uClinux only memory optimization that lets insmod |
98 | load the specified kernel module directly into kernel space, reducing |
99 | memory usage by preventing the need for two copies of the module |
100 | being loaded into memory. |
101 | |
102 | config FEATURE_INSMOD_LOAD_MAP |
103 | bool "Enable insmod load map (-m) option" |
104 | default n |
105 | depends on FEATURE_2_4_MODULES && INSMOD |
106 | select PLATFORM_LINUX |
107 | help |
108 | Enabling this, one would be able to get a load map |
109 | output on stdout. This makes kernel module debugging |
110 | easier. |
111 | If you don't plan to debug kernel modules, you |
112 | don't need this option. |
113 | |
114 | config FEATURE_INSMOD_LOAD_MAP_FULL |
115 | bool "Symbols in load map" |
116 | default y |
117 | depends on FEATURE_INSMOD_LOAD_MAP && !MODPROBE_SMALL |
118 | select PLATFORM_LINUX |
119 | help |
120 | Without this option, -m will only output section |
121 | load map. With this option, -m will also output |
122 | symbols load map. |
123 | |
124 | config FEATURE_CHECK_TAINTED_MODULE |
125 | bool "Support tainted module checking with new kernels" |
126 | default y |
127 | depends on (LSMOD || FEATURE_2_4_MODULES) && !MODPROBE_SMALL |
128 | select PLATFORM_LINUX |
129 | help |
130 | Support checking for tainted modules. These are usually binary |
131 | only modules that will make the linux-kernel list ignore your |
132 | support request. |
133 | This option is required to support GPLONLY modules. |
134 | |
135 | config FEATURE_MODUTILS_ALIAS |
136 | bool "Support for module.aliases file" |
137 | default y |
138 | depends on DEPMOD || MODPROBE |
139 | select PLATFORM_LINUX |
140 | help |
141 | Generate and parse modules.alias containing aliases for bus |
142 | identifiers: |
143 | alias pcmcia:m*c*f03fn*pfn*pa*pb*pc*pd* parport_cs |
144 | |
145 | and aliases for logical modules names e.g.: |
146 | alias padlock_aes aes |
147 | alias aes_i586 aes |
148 | alias aes_generic aes |
149 | |
150 | Say Y if unsure. |
151 | |
152 | config FEATURE_MODUTILS_SYMBOLS |
153 | bool "Support for module.symbols file" |
154 | default y |
155 | depends on DEPMOD || MODPROBE |
156 | select PLATFORM_LINUX |
157 | help |
158 | Generate and parse modules.symbols containing aliases for |
159 | symbol_request() kernel calls, such as: |
160 | alias symbol:usb_sg_init usbcore |
161 | |
162 | Say Y if unsure. |
163 | |
164 | config DEFAULT_MODULES_DIR |
165 | string "Default directory containing modules" |
166 | default "/lib/modules" |
167 | depends on DEPMOD || MODPROBE || MODPROBE_SMALL || MODINFO |
168 | help |
169 | Directory that contains kernel modules. |
170 | Defaults to "/lib/modules" |
171 | |
172 | config DEFAULT_DEPMOD_FILE |
173 | string "Default name of modules.dep" |
174 | default "modules.dep" |
175 | depends on DEPMOD || MODPROBE || MODPROBE_SMALL || MODINFO |
176 | help |
177 | Filename that contains kernel modules dependencies. |
178 | Defaults to "modules.dep" |
179 | |
180 | endmenu |
181 |