]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | # |
2 | # Library configuration | |
3 | # | |
4 | ||
4370aa4a LJ |
5 | config BINARY_PRINTF |
6 | def_bool n | |
7 | ||
1da177e4 LT |
8 | menu "Library routines" |
9 | ||
f5e70d0f DW |
10 | config RAID6_PQ |
11 | tristate | |
12 | ||
a5cfc1ec AM |
13 | config BITREVERSE |
14 | tristate | |
15 | ||
8759ef32 OS |
16 | config RATIONAL |
17 | boolean | |
18 | ||
19870def | 19 | config GENERIC_FIND_FIRST_BIT |
9ba16087 | 20 | bool |
19870def | 21 | |
b923650b MT |
22 | config NO_GENERIC_PCI_IOPORT_MAP |
23 | bool | |
24 | ||
66eab4df MT |
25 | config GENERIC_PCI_IOMAP |
26 | bool | |
27 | ||
4673ca8e MT |
28 | config GENERIC_IOMAP |
29 | bool | |
66eab4df | 30 | select GENERIC_PCI_IOMAP |
4673ca8e | 31 | |
1da177e4 LT |
32 | config CRC_CCITT |
33 | tristate "CRC-CCITT functions" | |
34 | help | |
35 | This option is provided for the case where no in-kernel-tree | |
36 | modules require CRC-CCITT functions, but a module built outside | |
37 | the kernel tree does. Such modules that use library CRC-CCITT | |
38 | functions require M here. | |
39 | ||
7657ec1f EP |
40 | config CRC16 |
41 | tristate "CRC16 functions" | |
42 | help | |
43 | This option is provided for the case where no in-kernel-tree | |
44 | modules require CRC16 functions, but a module built outside | |
45 | the kernel tree does. Such modules that use library CRC16 | |
46 | functions require M here. | |
47 | ||
f11f594e MP |
48 | config CRC_T10DIF |
49 | tristate "CRC calculation for the T10 Data Integrity Field" | |
50 | help | |
51 | This option is only needed if a module that's not in the | |
52 | kernel tree needs to calculate CRC checks for use with the | |
53 | SCSI data integrity subsystem. | |
54 | ||
3e7cbae7 ID |
55 | config CRC_ITU_T |
56 | tristate "CRC ITU-T V.41 functions" | |
57 | help | |
58 | This option is provided for the case where no in-kernel-tree | |
59 | modules require CRC ITU-T V.41 functions, but a module built outside | |
60 | the kernel tree does. Such modules that use library CRC ITU-T V.41 | |
61 | functions require M here. | |
62 | ||
1da177e4 | 63 | config CRC32 |
46c5801e | 64 | tristate "CRC32/CRC32c functions" |
1da177e4 | 65 | default y |
906d66df | 66 | select BITREVERSE |
1da177e4 LT |
67 | help |
68 | This option is provided for the case where no in-kernel-tree | |
46c5801e DW |
69 | modules require CRC32/CRC32c functions, but a module built outside |
70 | the kernel tree does. Such modules that use library CRC32/CRC32c | |
71 | functions require M here. | |
1da177e4 | 72 | |
3863ef31 BP |
73 | config CRC32_SELFTEST |
74 | bool "CRC32 perform self test on init" | |
75 | default n | |
76 | depends on CRC32 | |
77 | help | |
78 | This option enables the CRC32 library functions to perform a | |
79 | self test on initialization. The self test computes crc32_le | |
80 | and crc32_be over byte strings with random alignment and length | |
81 | and computes the total elapsed time and number of bytes processed. | |
82 | ||
5cde7656 DW |
83 | choice |
84 | prompt "CRC32 implementation" | |
85 | depends on CRC32 | |
86 | default CRC32_SLICEBY8 | |
87 | ||
88 | config CRC32_SLICEBY8 | |
89 | bool "Slice by 8 bytes" | |
90 | help | |
91 | Calculate checksum 8 bytes at a time with a clever slicing algorithm. | |
92 | This is the fastest algorithm, but comes with a 8KiB lookup table. | |
93 | Most modern processors have enough cache to hold this table without | |
94 | thrashing the cache. | |
95 | ||
96 | This is the default implementation choice. Choose this one unless | |
97 | you have a good reason not to. | |
98 | ||
99 | config CRC32_SLICEBY4 | |
100 | bool "Slice by 4 bytes" | |
101 | help | |
102 | Calculate checksum 4 bytes at a time with a clever slicing algorithm. | |
103 | This is a bit slower than slice by 8, but has a smaller 4KiB lookup | |
104 | table. | |
105 | ||
106 | Only choose this option if you know what you are doing. | |
107 | ||
108 | config CRC32_SARWATE | |
109 | bool "Sarwate's Algorithm (one byte at a time)" | |
110 | help | |
111 | Calculate checksum a byte at a time using Sarwate's algorithm. This | |
112 | is not particularly fast, but has a small 256 byte lookup table. | |
113 | ||
114 | Only choose this option if you know what you are doing. | |
115 | ||
116 | config CRC32_BIT | |
117 | bool "Classic Algorithm (one bit at a time)" | |
118 | help | |
119 | Calculate checksum one bit at a time. This is VERY slow, but has | |
120 | no lookup table. This is provided as a debugging option. | |
121 | ||
122 | Only choose this option if you are debugging crc32. | |
123 | ||
124 | endchoice | |
125 | ||
ad241528 JN |
126 | config CRC7 |
127 | tristate "CRC7 functions" | |
128 | help | |
129 | This option is provided for the case where no in-kernel-tree | |
130 | modules require CRC7 functions, but a module built outside | |
131 | the kernel tree does. Such modules that use library CRC7 | |
132 | functions require M here. | |
133 | ||
1da177e4 LT |
134 | config LIBCRC32C |
135 | tristate "CRC32c (Castagnoli, et al) Cyclic Redundancy-Check" | |
93027354 | 136 | select CRYPTO |
69c35efc | 137 | select CRYPTO_CRC32C |
1da177e4 LT |
138 | help |
139 | This option is provided for the case where no in-kernel-tree | |
140 | modules require CRC32c functions, but a module built outside the | |
141 | kernel tree does. Such modules that use library CRC32c functions | |
142 | require M here. See Castagnoli93. | |
143 | Module will be libcrc32c. | |
144 | ||
7150962d AS |
145 | config CRC8 |
146 | tristate "CRC8 function" | |
147 | help | |
148 | This option provides CRC8 function. Drivers may select this | |
149 | when they need to do cyclic redundancy check according CRC8 | |
150 | algorithm. Module will be called crc8. | |
151 | ||
e65e1fc2 AV |
152 | config AUDIT_GENERIC |
153 | bool | |
154 | depends on AUDIT && !AUDIT_ARCH | |
155 | default y | |
156 | ||
1da177e4 LT |
157 | # |
158 | # compression support is select'ed if needed | |
159 | # | |
160 | config ZLIB_INFLATE | |
161 | tristate | |
162 | ||
163 | config ZLIB_DEFLATE | |
164 | tristate | |
165 | ||
64c70b1c RP |
166 | config LZO_COMPRESS |
167 | tristate | |
168 | ||
169 | config LZO_DECOMPRESS | |
170 | tristate | |
171 | ||
24fa0402 LC |
172 | source "lib/xz/Kconfig" |
173 | ||
c8531ab3 PA |
174 | # |
175 | # These all provide a common interface (hence the apparent duplication with | |
176 | # ZLIB_INFLATE; DECOMPRESS_GZIP is just a wrapper.) | |
177 | # | |
178 | config DECOMPRESS_GZIP | |
7856a16e | 179 | select ZLIB_INFLATE |
c8531ab3 PA |
180 | tristate |
181 | ||
182 | config DECOMPRESS_BZIP2 | |
183 | tristate | |
184 | ||
185 | config DECOMPRESS_LZMA | |
186 | tristate | |
187 | ||
3ebe1243 LC |
188 | config DECOMPRESS_XZ |
189 | select XZ_DEC | |
190 | tristate | |
191 | ||
cacb246f AT |
192 | config DECOMPRESS_LZO |
193 | select LZO_DECOMPRESS | |
194 | tristate | |
195 | ||
f14f75b8 JS |
196 | # |
197 | # Generic allocator support is selected if needed | |
198 | # | |
199 | config GENERIC_ALLOCATOR | |
200 | boolean | |
201 | ||
1da177e4 LT |
202 | # |
203 | # reed solomon support is select'ed if needed | |
204 | # | |
205 | config REED_SOLOMON | |
206 | tristate | |
207 | ||
208 | config REED_SOLOMON_ENC8 | |
209 | boolean | |
210 | ||
211 | config REED_SOLOMON_DEC8 | |
212 | boolean | |
213 | ||
214 | config REED_SOLOMON_ENC16 | |
215 | boolean | |
216 | ||
217 | config REED_SOLOMON_DEC16 | |
218 | boolean | |
219 | ||
437aa565 ID |
220 | # |
221 | # BCH support is selected if needed | |
222 | # | |
223 | config BCH | |
224 | tristate | |
225 | ||
226 | config BCH_CONST_PARAMS | |
227 | boolean | |
228 | help | |
229 | Drivers may select this option to force specific constant | |
230 | values for parameters 'm' (Galois field order) and 't' | |
231 | (error correction capability). Those specific values must | |
232 | be set by declaring default values for symbols BCH_CONST_M | |
233 | and BCH_CONST_T. | |
234 | Doing so will enable extra compiler optimizations, | |
235 | improving encoding and decoding performance up to 2x for | |
236 | usual (m,t) values (typically such that m*t < 200). | |
237 | When this option is selected, the BCH library supports | |
238 | only a single (m,t) configuration. This is mainly useful | |
239 | for NAND flash board drivers requiring known, fixed BCH | |
240 | parameters. | |
241 | ||
242 | config BCH_CONST_M | |
243 | int | |
244 | range 5 15 | |
245 | help | |
246 | Constant value for Galois field order 'm'. If 'k' is the | |
247 | number of data bits to protect, 'm' should be chosen such | |
248 | that (k + m*t) <= 2**m - 1. | |
249 | Drivers should declare a default value for this symbol if | |
250 | they select option BCH_CONST_PARAMS. | |
251 | ||
252 | config BCH_CONST_T | |
253 | int | |
254 | help | |
255 | Constant value for error correction capability in bits 't'. | |
256 | Drivers should declare a default value for this symbol if | |
257 | they select option BCH_CONST_PARAMS. | |
258 | ||
f7704347 DM |
259 | # |
260 | # Textsearch support is select'ed if needed | |
261 | # | |
2de4ff7b | 262 | config TEXTSEARCH |
f7704347 | 263 | boolean |
1da177e4 | 264 | |
df3fb93a | 265 | config TEXTSEARCH_KMP |
f7704347 | 266 | tristate |
df3fb93a | 267 | |
8082e4ed | 268 | config TEXTSEARCH_BM |
29cb9f9c | 269 | tristate |
8082e4ed | 270 | |
6408f79c | 271 | config TEXTSEARCH_FSM |
f7704347 | 272 | tristate |
6408f79c | 273 | |
5db53f3e JE |
274 | config BTREE |
275 | boolean | |
276 | ||
5ea81769 | 277 | config HAS_IOMEM |
ee36c2bf | 278 | boolean |
5ea81769 AV |
279 | depends on !NO_IOMEM |
280 | default y | |
281 | ||
282 | config HAS_IOPORT | |
283 | boolean | |
284 | depends on HAS_IOMEM && !NO_IOPORT | |
ee36c2bf AV |
285 | default y |
286 | ||
411f0f3e HC |
287 | config HAS_DMA |
288 | boolean | |
289 | depends on !NO_DMA | |
290 | default y | |
291 | ||
928923c7 GU |
292 | config CHECK_SIGNATURE |
293 | bool | |
294 | ||
aab46da0 RR |
295 | config CPUMASK_OFFSTACK |
296 | bool "Force CPU masks off stack" if DEBUG_PER_CPU_MAPS | |
297 | help | |
298 | Use dynamic allocation for cpumask_var_t, instead of putting | |
299 | them on the stack. This is a bit more expensive, but avoids | |
300 | stack overflow. | |
301 | ||
8c384cde RR |
302 | config DISABLE_OBSOLETE_CPUMASK_FUNCTIONS |
303 | bool "Disable obsolete cpumask functions" if DEBUG_PER_CPU_MAPS | |
304 | depends on EXPERIMENTAL && BROKEN | |
305 | ||
c39649c3 BH |
306 | config CPU_RMAP |
307 | bool | |
308 | depends on SMP | |
309 | ||
75957ba3 TH |
310 | config DQL |
311 | bool | |
312 | ||
e9cc8bdd GU |
313 | # |
314 | # Netlink attribute parsing support is select'ed if needed | |
315 | # | |
316 | config NLATTR | |
317 | bool | |
318 | ||
09d4e0ed PM |
319 | # |
320 | # Generic 64-bit atomic support is selected if needed | |
321 | # | |
322 | config GENERIC_ATOMIC64 | |
323 | bool | |
324 | ||
b411b363 PR |
325 | config LRU_CACHE |
326 | tristate | |
327 | ||
c5485a7e | 328 | config AVERAGE |
a7a9a24d MB |
329 | bool "Averaging functions" |
330 | help | |
331 | This option is provided for the case where no in-kernel-tree | |
332 | modules require averaging functions, but a module built outside | |
333 | the kernel tree does. Such modules that use library averaging | |
334 | functions require Y here. | |
335 | ||
336 | If unsure, say N. | |
c5485a7e | 337 | |
c6df4b17 DM |
338 | config CLZ_TAB |
339 | bool | |
340 | ||
10f8113e | 341 | config CORDIC |
d89ce936 | 342 | tristate "CORDIC algorithm" |
10f8113e | 343 | help |
435a95c5 MW |
344 | This option provides an implementation of the CORDIC algorithm; |
345 | calculations are in fixed point. Module will be called cordic. | |
10f8113e | 346 | |
d9c46b18 | 347 | config MPILIB |
2e5f094b | 348 | tristate |
c6df4b17 | 349 | select CLZ_TAB |
d9c46b18 DK |
350 | help |
351 | Multiprecision maths library from GnuPG. | |
352 | It is used to implement RSA digital signature verification, | |
353 | which is used by IMA/EVM digital signature extension. | |
354 | ||
7e8dec91 | 355 | config MPILIB_EXTRA |
2e5f094b | 356 | bool |
7e8dec91 DK |
357 | depends on MPILIB |
358 | help | |
68adcad5 DK |
359 | Additional sources of multiprecision maths library from GnuPG. |
360 | This code is unnecessary for RSA digital signature verification, | |
361 | but can be compiled if needed. | |
7e8dec91 | 362 | |
5e8898e9 | 363 | config SIGNATURE |
2e5f094b | 364 | tristate |
be440ec7 DK |
365 | depends on KEYS && CRYPTO |
366 | select CRYPTO_SHA1 | |
051dbb91 DK |
367 | select MPILIB |
368 | help | |
369 | Digital signature verification. Currently only RSA is supported. | |
370 | Implementation is done using GnuPG MPI library | |
371 | ||
2de4ff7b | 372 | endmenu |