1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
|
#
# For a description of the syntax of this configuration file,
# see scripts/kbuild/config-language.txt.
#
comment "-------------------------------------------------"
comment "Linux Module Utilities"
comment "-------------------------------------------------"
config KEMBTK_BUSYB_MODPROBE_SMALL
bool "Simplified modutils"
help
Simplified modutils.
With this option modprobe does not require modules.dep file
and does not use /etc/modules.conf file.
It scans module files in /lib/modules/`uname -r` and
determines dependencies and module alias names on the fly.
This may make module loading slower, most notably
when one needs to load module by alias (this requires
scanning through module _bodies_).
At the first attempt to load a module by alias modprobe
will try to generate modules.dep.bb file in order to speed up
future loads by alias. Failure to do so (read-only /lib/modules,
etc) is not reported, and future modprobes will be slow too.
NB: modules.dep.bb file format is not compatible
with modules.dep file as created/used by standard module tools.
Additional module parameters can be stored in
/etc/modules/$module_name files.
Apart from modprobe, other utilities are also provided:
- insmod is an alias to modprobe
- rmmod is an alias to modprobe -r
- depmod generates modules.dep.bb
As of 2008-07, this code is experimental. It is 14kb smaller
than "non-small" modutils.
config KEMBTK_BUSYB_FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE
bool "Accept module options on modprobe command line"
depends on KEMBTK_BUSYB_MODPROBE_SMALL
help
Allow insmod and modprobe take module options from command line.
config KEMBTK_BUSYB_FEATURE_MODPROBE_SMALL_CHECK_ALREADY_LOADED
bool "Skip loading of already loaded modules"
depends on KEMBTK_BUSYB_MODPROBE_SMALL
help
Check if the module is already loaded.
config KEMBTK_BUSYB_INSMOD
bool "insmod"
depends on !KEMBTK_BUSYB_MODPROBE_SMALL
help
insmod is used to load specified modules in the running kernel.
config KEMBTK_BUSYB_RMMOD
bool "rmmod"
depends on !KEMBTK_BUSYB_MODPROBE_SMALL
help
rmmod is used to unload specified modules from the kernel.
config KEMBTK_BUSYB_LSMOD
bool "lsmod"
depends on !KEMBTK_BUSYB_MODPROBE_SMALL
help
lsmod is used to display a list of loaded modules.
config KEMBTK_BUSYB_FEATURE_LSMOD_PRETTY_2_6_OUTPUT
bool "Pretty output"
depends on KEMBTK_BUSYB_LSMOD
help
This option makes output format of lsmod adjusted to
the format of module-init-tools for Linux kernel 2.6.
Increases size somewhat.
config KEMBTK_BUSYB_MODPROBE
bool "modprobe"
depends on !KEMBTK_BUSYB_MODPROBE_SMALL
help
Handle the loading of modules, and their dependencies on a high
level.
config KEMBTK_BUSYB_FEATURE_MODPROBE_BLACKLIST
bool "Blacklist support"
depends on KEMBTK_BUSYB_MODPROBE
help
Say 'y' here to enable support for the 'blacklist' command in
modprobe.conf. This prevents the alias resolver to resolve
blacklisted modules. This is useful if you want to prevent your
hardware autodetection scripts to load modules like evdev, frame
buffer drivers etc.
config KEMBTK_BUSYB_DEPMOD
bool "depmod"
depends on !KEMBTK_BUSYB_MODPROBE_SMALL
help
depmod generates modules.dep (and potentially modules.alias
and modules.symbols) that contain dependency information
for modprobe.
comment "Options common to multiple modutils"
config KEMBTK_BUSYB_FEATURE_2_4_MODULES
bool "Support version 2.2/2.4 Linux kernels"
depends on KEMBTK_BUSYB_INSMOD || KEMBTK_BUSYB_RMMOD || KEMBTK_BUSYB_LSMOD
help
Support module loading for 2.2.x and 2.4.x Linux kernels.
This increases size considerably. Say N unless you plan
to run ancient kernels.
config KEMBTK_BUSYB_FEATURE_INSMOD_TRY_MMAP
bool "Try to load module from a mmap'ed area"
depends on KEMBTK_BUSYB_INSMOD || KEMBTK_BUSYB_MODPROBE_SMALL
depends on EMBTK_BB_VERSION_1_16_X
help
This option causes module loading code to try to mmap
module first. If it does not work (for example,
it does not work for compressed modules), module will be read
(and unpacked if needed) into a memory block allocated by malloc.
The only case when mmap works but malloc does not is when
you are trying to load a big module on a very memory-constrained
machine. Malloc will momentarily need 2x as much memory as mmap.
Choosing N saves about 250 bytes of code (on 32-bit x86).
config KEMBTK_BUSYB_FEATURE_INSMOD_VERSION_CHECKING
bool "Enable module version checking"
depends on KEMBTK_BUSYB_FEATURE_2_4_MODULES && (KEMBTK_BUSYB_INSMOD || KEMBTK_BUSYB_MODPROBE)
help
Support checking of versions for modules. This is used to
ensure that the kernel and module are made for each other.
config KEMBTK_BUSYB_FEATURE_INSMOD_KSYMOOPS_SYMBOLS
bool "Add module symbols to kernel symbol table"
depends on KEMBTK_BUSYB_FEATURE_2_4_MODULES && (KEMBTK_BUSYB_INSMOD || KEMBTK_BUSYB_MODPROBE)
help
By adding module symbols to the kernel symbol table, Oops messages
occuring within kernel modules can be properly debugged. By enabling
this feature, module symbols will always be added to the kernel symbol
table for proper debugging support. If you are not interested in
Oops messages from kernel modules, say N.
config KEMBTK_BUSYB_FEATURE_INSMOD_LOADINKMEM
bool "In kernel memory optimization (uClinux only)"
depends on KEMBTK_BUSYB_FEATURE_2_4_MODULES && (KEMBTK_BUSYB_INSMOD || KEMBTK_BUSYB_MODPROBE)
help
This is a special uClinux only memory optimization that lets insmod
load the specified kernel module directly into kernel space, reducing
memory usage by preventing the need for two copies of the module
being loaded into memory.
config KEMBTK_BUSYB_FEATURE_INSMOD_LOAD_MAP
bool "Enable insmod load map (-m) option"
depends on KEMBTK_BUSYB_FEATURE_2_4_MODULES && KEMBTK_BUSYB_INSMOD
help
Enabling this, one would be able to get a load map
output on stdout. This makes kernel module debugging
easier.
If you don't plan to debug kernel modules, you
don't need this option.
config KEMBTK_BUSYB_FEATURE_INSMOD_LOAD_MAP_FULL
bool "Symbols in load map"
default y
depends on KEMBTK_BUSYB_FEATURE_INSMOD_LOAD_MAP && !KEMBTK_BUSYB_MODPROBE_SMALL
help
Without this option, -m will only output section
load map. With this option, -m will also output
symbols load map.
config KEMBTK_BUSYB_FEATURE_CHECK_TAINTED_MODULE
bool "Support tainted module checking with new kernels"
default y
help
Support checking for tainted modules. These are usually binary
only modules that will make the linux-kernel list ignore your
support request.
This option is required to support GPLONLY modules.
config KEMBTK_BUSYB_FEATURE_MODUTILS_ALIAS
bool "Support for module.aliases file"
default y
depends on KEMBTK_BUSYB_DEPMOD || KEMBTK_BUSYB_MODPROBE
help
Generate and parse modules.alias containing aliases for bus
identifiers:
alias pcmcia:m*c*f03fn*pfn*pa*pb*pc*pd* parport_cs
and aliases for logical modules names e.g.:
alias padlock_aes aes
alias aes_i586 aes
alias aes_generic aes
Say Y if unsure.
config KEMBTK_BUSYB_FEATURE_MODUTILS_SYMBOLS
bool "Support for module.symbols file"
default y
depends on KEMBTK_BUSYB_DEPMOD || KEMBTK_BUSYB_MODPROBE
help
Generate and parse modules.symbols containing aliases for
symbol_request() kernel calls, such as:
alias symbol:usb_sg_init usbcore
Say Y if unsure.
config KEMBTK_BUSYB_DEFAULT_MODULES_DIR
string "Default directory containing modules"
default "/lib/modules"
help
Directory that contains kernel modules.
Defaults to "/lib/modules"
config KEMBTK_BUSYB_DEFAULT_DEPMOD_FILE
string "Default name of modules.dep"
default "modules.dep"
help
Filename that contains kernel modules dependencies.
Defaults to "modules.dep"
|
