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Commit | Line | Data |
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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 | |
087fafd1 RW |
32 | config GENERIC_IO |
33 | boolean | |
34 | default n | |
35 | ||
1da177e4 LT |
36 | config CRC_CCITT |
37 | tristate "CRC-CCITT functions" | |
38 | help | |
39 | This option is provided for the case where no in-kernel-tree | |
40 | modules require CRC-CCITT functions, but a module built outside | |
41 | the kernel tree does. Such modules that use library CRC-CCITT | |
42 | functions require M here. | |
43 | ||
7657ec1f EP |
44 | config CRC16 |
45 | tristate "CRC16 functions" | |
46 | help | |
47 | This option is provided for the case where no in-kernel-tree | |
48 | modules require CRC16 functions, but a module built outside | |
49 | the kernel tree does. Such modules that use library CRC16 | |
50 | functions require M here. | |
51 | ||
f11f594e MP |
52 | config CRC_T10DIF |
53 | tristate "CRC calculation for the T10 Data Integrity Field" | |
54 | help | |
55 | This option is only needed if a module that's not in the | |
56 | kernel tree needs to calculate CRC checks for use with the | |
57 | SCSI data integrity subsystem. | |
58 | ||
3e7cbae7 ID |
59 | config CRC_ITU_T |
60 | tristate "CRC ITU-T V.41 functions" | |
61 | help | |
62 | This option is provided for the case where no in-kernel-tree | |
63 | modules require CRC ITU-T V.41 functions, but a module built outside | |
64 | the kernel tree does. Such modules that use library CRC ITU-T V.41 | |
65 | functions require M here. | |
66 | ||
1da177e4 | 67 | config CRC32 |
46c5801e | 68 | tristate "CRC32/CRC32c functions" |
1da177e4 | 69 | default y |
906d66df | 70 | select BITREVERSE |
1da177e4 LT |
71 | help |
72 | This option is provided for the case where no in-kernel-tree | |
46c5801e DW |
73 | modules require CRC32/CRC32c functions, but a module built outside |
74 | the kernel tree does. Such modules that use library CRC32/CRC32c | |
75 | functions require M here. | |
1da177e4 | 76 | |
3863ef31 BP |
77 | config CRC32_SELFTEST |
78 | bool "CRC32 perform self test on init" | |
79 | default n | |
80 | depends on CRC32 | |
81 | help | |
82 | This option enables the CRC32 library functions to perform a | |
83 | self test on initialization. The self test computes crc32_le | |
84 | and crc32_be over byte strings with random alignment and length | |
85 | and computes the total elapsed time and number of bytes processed. | |
86 | ||
5cde7656 DW |
87 | choice |
88 | prompt "CRC32 implementation" | |
89 | depends on CRC32 | |
90 | default CRC32_SLICEBY8 | |
91 | ||
92 | config CRC32_SLICEBY8 | |
93 | bool "Slice by 8 bytes" | |
94 | help | |
95 | Calculate checksum 8 bytes at a time with a clever slicing algorithm. | |
96 | This is the fastest algorithm, but comes with a 8KiB lookup table. | |
97 | Most modern processors have enough cache to hold this table without | |
98 | thrashing the cache. | |
99 | ||
100 | This is the default implementation choice. Choose this one unless | |
101 | you have a good reason not to. | |
102 | ||
103 | config CRC32_SLICEBY4 | |
104 | bool "Slice by 4 bytes" | |
105 | help | |
106 | Calculate checksum 4 bytes at a time with a clever slicing algorithm. | |
107 | This is a bit slower than slice by 8, but has a smaller 4KiB lookup | |
108 | table. | |
109 | ||
110 | Only choose this option if you know what you are doing. | |
111 | ||
112 | config CRC32_SARWATE | |
113 | bool "Sarwate's Algorithm (one byte at a time)" | |
114 | help | |
115 | Calculate checksum a byte at a time using Sarwate's algorithm. This | |
116 | is not particularly fast, but has a small 256 byte lookup table. | |
117 | ||
118 | Only choose this option if you know what you are doing. | |
119 | ||
120 | config CRC32_BIT | |
121 | bool "Classic Algorithm (one bit at a time)" | |
122 | help | |
123 | Calculate checksum one bit at a time. This is VERY slow, but has | |
124 | no lookup table. This is provided as a debugging option. | |
125 | ||
126 | Only choose this option if you are debugging crc32. | |
127 | ||
128 | endchoice | |
129 | ||
ad241528 JN |
130 | config CRC7 |
131 | tristate "CRC7 functions" | |
132 | help | |
133 | This option is provided for the case where no in-kernel-tree | |
134 | modules require CRC7 functions, but a module built outside | |
135 | the kernel tree does. Such modules that use library CRC7 | |
136 | functions require M here. | |
137 | ||
1da177e4 LT |
138 | config LIBCRC32C |
139 | tristate "CRC32c (Castagnoli, et al) Cyclic Redundancy-Check" | |
93027354 | 140 | select CRYPTO |
69c35efc | 141 | select CRYPTO_CRC32C |
1da177e4 LT |
142 | help |
143 | This option is provided for the case where no in-kernel-tree | |
144 | modules require CRC32c functions, but a module built outside the | |
145 | kernel tree does. Such modules that use library CRC32c functions | |
146 | require M here. See Castagnoli93. | |
147 | Module will be libcrc32c. | |
148 | ||
7150962d AS |
149 | config CRC8 |
150 | tristate "CRC8 function" | |
151 | help | |
152 | This option provides CRC8 function. Drivers may select this | |
153 | when they need to do cyclic redundancy check according CRC8 | |
154 | algorithm. Module will be called crc8. | |
155 | ||
e65e1fc2 AV |
156 | config AUDIT_GENERIC |
157 | bool | |
158 | depends on AUDIT && !AUDIT_ARCH | |
159 | default y | |
160 | ||
1da177e4 LT |
161 | # |
162 | # compression support is select'ed if needed | |
163 | # | |
164 | config ZLIB_INFLATE | |
165 | tristate | |
166 | ||
167 | config ZLIB_DEFLATE | |
168 | tristate | |
169 | ||
64c70b1c RP |
170 | config LZO_COMPRESS |
171 | tristate | |
172 | ||
173 | config LZO_DECOMPRESS | |
174 | tristate | |
175 | ||
24fa0402 LC |
176 | source "lib/xz/Kconfig" |
177 | ||
c8531ab3 PA |
178 | # |
179 | # These all provide a common interface (hence the apparent duplication with | |
180 | # ZLIB_INFLATE; DECOMPRESS_GZIP is just a wrapper.) | |
181 | # | |
182 | config DECOMPRESS_GZIP | |
7856a16e | 183 | select ZLIB_INFLATE |
c8531ab3 PA |
184 | tristate |
185 | ||
186 | config DECOMPRESS_BZIP2 | |
187 | tristate | |
188 | ||
189 | config DECOMPRESS_LZMA | |
190 | tristate | |
191 | ||
3ebe1243 LC |
192 | config DECOMPRESS_XZ |
193 | select XZ_DEC | |
194 | tristate | |
195 | ||
cacb246f AT |
196 | config DECOMPRESS_LZO |
197 | select LZO_DECOMPRESS | |
198 | tristate | |
199 | ||
f14f75b8 JS |
200 | # |
201 | # Generic allocator support is selected if needed | |
202 | # | |
203 | config GENERIC_ALLOCATOR | |
204 | boolean | |
205 | ||
1da177e4 LT |
206 | # |
207 | # reed solomon support is select'ed if needed | |
208 | # | |
209 | config REED_SOLOMON | |
210 | tristate | |
211 | ||
212 | config REED_SOLOMON_ENC8 | |
213 | boolean | |
214 | ||
215 | config REED_SOLOMON_DEC8 | |
216 | boolean | |
217 | ||
218 | config REED_SOLOMON_ENC16 | |
219 | boolean | |
220 | ||
221 | config REED_SOLOMON_DEC16 | |
222 | boolean | |
223 | ||
437aa565 ID |
224 | # |
225 | # BCH support is selected if needed | |
226 | # | |
227 | config BCH | |
228 | tristate | |
229 | ||
230 | config BCH_CONST_PARAMS | |
231 | boolean | |
232 | help | |
233 | Drivers may select this option to force specific constant | |
234 | values for parameters 'm' (Galois field order) and 't' | |
235 | (error correction capability). Those specific values must | |
236 | be set by declaring default values for symbols BCH_CONST_M | |
237 | and BCH_CONST_T. | |
238 | Doing so will enable extra compiler optimizations, | |
239 | improving encoding and decoding performance up to 2x for | |
240 | usual (m,t) values (typically such that m*t < 200). | |
241 | When this option is selected, the BCH library supports | |
242 | only a single (m,t) configuration. This is mainly useful | |
243 | for NAND flash board drivers requiring known, fixed BCH | |
244 | parameters. | |
245 | ||
246 | config BCH_CONST_M | |
247 | int | |
248 | range 5 15 | |
249 | help | |
250 | Constant value for Galois field order 'm'. If 'k' is the | |
251 | number of data bits to protect, 'm' should be chosen such | |
252 | that (k + m*t) <= 2**m - 1. | |
253 | Drivers should declare a default value for this symbol if | |
254 | they select option BCH_CONST_PARAMS. | |
255 | ||
256 | config BCH_CONST_T | |
257 | int | |
258 | help | |
259 | Constant value for error correction capability in bits 't'. | |
260 | Drivers should declare a default value for this symbol if | |
261 | they select option BCH_CONST_PARAMS. | |
262 | ||
f7704347 DM |
263 | # |
264 | # Textsearch support is select'ed if needed | |
265 | # | |
2de4ff7b | 266 | config TEXTSEARCH |
f7704347 | 267 | boolean |
1da177e4 | 268 | |
df3fb93a | 269 | config TEXTSEARCH_KMP |
f7704347 | 270 | tristate |
df3fb93a | 271 | |
8082e4ed | 272 | config TEXTSEARCH_BM |
29cb9f9c | 273 | tristate |
8082e4ed | 274 | |
6408f79c | 275 | config TEXTSEARCH_FSM |
f7704347 | 276 | tristate |
6408f79c | 277 | |
5db53f3e JE |
278 | config BTREE |
279 | boolean | |
280 | ||
5ea81769 | 281 | config HAS_IOMEM |
ee36c2bf | 282 | boolean |
5ea81769 | 283 | depends on !NO_IOMEM |
087fafd1 | 284 | select GENERIC_IO |
5ea81769 AV |
285 | default y |
286 | ||
287 | config HAS_IOPORT | |
288 | boolean | |
289 | depends on HAS_IOMEM && !NO_IOPORT | |
ee36c2bf AV |
290 | default y |
291 | ||
411f0f3e HC |
292 | config HAS_DMA |
293 | boolean | |
294 | depends on !NO_DMA | |
295 | default y | |
296 | ||
928923c7 GU |
297 | config CHECK_SIGNATURE |
298 | bool | |
299 | ||
aab46da0 RR |
300 | config CPUMASK_OFFSTACK |
301 | bool "Force CPU masks off stack" if DEBUG_PER_CPU_MAPS | |
302 | help | |
303 | Use dynamic allocation for cpumask_var_t, instead of putting | |
304 | them on the stack. This is a bit more expensive, but avoids | |
305 | stack overflow. | |
306 | ||
8c384cde RR |
307 | config DISABLE_OBSOLETE_CPUMASK_FUNCTIONS |
308 | bool "Disable obsolete cpumask functions" if DEBUG_PER_CPU_MAPS | |
309 | depends on EXPERIMENTAL && BROKEN | |
310 | ||
c39649c3 BH |
311 | config CPU_RMAP |
312 | bool | |
313 | depends on SMP | |
314 | ||
75957ba3 TH |
315 | config DQL |
316 | bool | |
317 | ||
e9cc8bdd GU |
318 | # |
319 | # Netlink attribute parsing support is select'ed if needed | |
320 | # | |
321 | config NLATTR | |
322 | bool | |
323 | ||
09d4e0ed PM |
324 | # |
325 | # Generic 64-bit atomic support is selected if needed | |
326 | # | |
327 | config GENERIC_ATOMIC64 | |
328 | bool | |
329 | ||
b411b363 PR |
330 | config LRU_CACHE |
331 | tristate | |
332 | ||
c5485a7e | 333 | config AVERAGE |
a7a9a24d MB |
334 | bool "Averaging functions" |
335 | help | |
336 | This option is provided for the case where no in-kernel-tree | |
337 | modules require averaging functions, but a module built outside | |
338 | the kernel tree does. Such modules that use library averaging | |
339 | functions require Y here. | |
340 | ||
341 | If unsure, say N. | |
c5485a7e | 342 | |
c6df4b17 DM |
343 | config CLZ_TAB |
344 | bool | |
345 | ||
10f8113e | 346 | config CORDIC |
d89ce936 | 347 | tristate "CORDIC algorithm" |
10f8113e | 348 | help |
435a95c5 MW |
349 | This option provides an implementation of the CORDIC algorithm; |
350 | calculations are in fixed point. Module will be called cordic. | |
10f8113e | 351 | |
d9c46b18 | 352 | config MPILIB |
2e5f094b | 353 | tristate |
c6df4b17 | 354 | select CLZ_TAB |
d9c46b18 DK |
355 | help |
356 | Multiprecision maths library from GnuPG. | |
357 | It is used to implement RSA digital signature verification, | |
358 | which is used by IMA/EVM digital signature extension. | |
359 | ||
7e8dec91 | 360 | config MPILIB_EXTRA |
2e5f094b | 361 | bool |
7e8dec91 DK |
362 | depends on MPILIB |
363 | help | |
68adcad5 DK |
364 | Additional sources of multiprecision maths library from GnuPG. |
365 | This code is unnecessary for RSA digital signature verification, | |
366 | but can be compiled if needed. | |
7e8dec91 | 367 | |
5e8898e9 | 368 | config SIGNATURE |
2e5f094b | 369 | tristate |
be440ec7 DK |
370 | depends on KEYS && CRYPTO |
371 | select CRYPTO_SHA1 | |
051dbb91 DK |
372 | select MPILIB |
373 | help | |
374 | Digital signature verification. Currently only RSA is supported. | |
375 | Implementation is done using GnuPG MPI library | |
376 | ||
2de4ff7b | 377 | endmenu |