path: root/modutils/Config.src (plain)
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