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 | ||
2922585b DM |
19 | config GENERIC_STRNCPY_FROM_USER |
20 | bool | |
21 | ||
a08c5356 LT |
22 | config GENERIC_STRNLEN_USER |
23 | bool | |
24 | ||
4cd5773a AS |
25 | config GENERIC_NET_UTILS |
26 | bool | |
27 | ||
19870def | 28 | config GENERIC_FIND_FIRST_BIT |
9ba16087 | 29 | bool |
19870def | 30 | |
b923650b MT |
31 | config NO_GENERIC_PCI_IOPORT_MAP |
32 | bool | |
33 | ||
66eab4df MT |
34 | config GENERIC_PCI_IOMAP |
35 | bool | |
36 | ||
4673ca8e MT |
37 | config GENERIC_IOMAP |
38 | bool | |
66eab4df | 39 | select GENERIC_PCI_IOMAP |
4673ca8e | 40 | |
087fafd1 RW |
41 | config GENERIC_IO |
42 | boolean | |
43 | default n | |
44 | ||
4ccf4bea WS |
45 | config STMP_DEVICE |
46 | bool | |
47 | ||
22b361d1 ON |
48 | config PERCPU_RWSEM |
49 | boolean | |
50 | ||
bc08b449 LT |
51 | config ARCH_USE_CMPXCHG_LOCKREF |
52 | bool | |
53 | ||
1da177e4 LT |
54 | config CRC_CCITT |
55 | tristate "CRC-CCITT functions" | |
56 | help | |
57 | This option is provided for the case where no in-kernel-tree | |
58 | modules require CRC-CCITT functions, but a module built outside | |
59 | the kernel tree does. Such modules that use library CRC-CCITT | |
60 | functions require M here. | |
61 | ||
7657ec1f EP |
62 | config CRC16 |
63 | tristate "CRC16 functions" | |
64 | help | |
65 | This option is provided for the case where no in-kernel-tree | |
66 | modules require CRC16 functions, but a module built outside | |
67 | the kernel tree does. Such modules that use library CRC16 | |
68 | functions require M here. | |
69 | ||
f11f594e MP |
70 | config CRC_T10DIF |
71 | tristate "CRC calculation for the T10 Data Integrity Field" | |
68411521 HX |
72 | select CRYPTO |
73 | select CRYPTO_CRCT10DIF | |
f11f594e MP |
74 | help |
75 | This option is only needed if a module that's not in the | |
76 | kernel tree needs to calculate CRC checks for use with the | |
77 | SCSI data integrity subsystem. | |
78 | ||
3e7cbae7 ID |
79 | config CRC_ITU_T |
80 | tristate "CRC ITU-T V.41 functions" | |
81 | help | |
82 | This option is provided for the case where no in-kernel-tree | |
83 | modules require CRC ITU-T V.41 functions, but a module built outside | |
84 | the kernel tree does. Such modules that use library CRC ITU-T V.41 | |
85 | functions require M here. | |
86 | ||
1da177e4 | 87 | config CRC32 |
46c5801e | 88 | tristate "CRC32/CRC32c functions" |
1da177e4 | 89 | default y |
906d66df | 90 | select BITREVERSE |
1da177e4 LT |
91 | help |
92 | This option is provided for the case where no in-kernel-tree | |
46c5801e DW |
93 | modules require CRC32/CRC32c functions, but a module built outside |
94 | the kernel tree does. Such modules that use library CRC32/CRC32c | |
95 | functions require M here. | |
1da177e4 | 96 | |
3863ef31 BP |
97 | config CRC32_SELFTEST |
98 | bool "CRC32 perform self test on init" | |
99 | default n | |
100 | depends on CRC32 | |
101 | help | |
102 | This option enables the CRC32 library functions to perform a | |
103 | self test on initialization. The self test computes crc32_le | |
104 | and crc32_be over byte strings with random alignment and length | |
105 | and computes the total elapsed time and number of bytes processed. | |
106 | ||
5cde7656 DW |
107 | choice |
108 | prompt "CRC32 implementation" | |
109 | depends on CRC32 | |
110 | default CRC32_SLICEBY8 | |
82edb4ba DW |
111 | help |
112 | This option allows a kernel builder to override the default choice | |
113 | of CRC32 algorithm. Choose the default ("slice by 8") unless you | |
114 | know that you need one of the others. | |
5cde7656 DW |
115 | |
116 | config CRC32_SLICEBY8 | |
117 | bool "Slice by 8 bytes" | |
118 | help | |
119 | Calculate checksum 8 bytes at a time with a clever slicing algorithm. | |
120 | This is the fastest algorithm, but comes with a 8KiB lookup table. | |
121 | Most modern processors have enough cache to hold this table without | |
122 | thrashing the cache. | |
123 | ||
124 | This is the default implementation choice. Choose this one unless | |
125 | you have a good reason not to. | |
126 | ||
127 | config CRC32_SLICEBY4 | |
128 | bool "Slice by 4 bytes" | |
129 | help | |
130 | Calculate checksum 4 bytes at a time with a clever slicing algorithm. | |
131 | This is a bit slower than slice by 8, but has a smaller 4KiB lookup | |
132 | table. | |
133 | ||
134 | Only choose this option if you know what you are doing. | |
135 | ||
136 | config CRC32_SARWATE | |
137 | bool "Sarwate's Algorithm (one byte at a time)" | |
138 | help | |
139 | Calculate checksum a byte at a time using Sarwate's algorithm. This | |
140 | is not particularly fast, but has a small 256 byte lookup table. | |
141 | ||
142 | Only choose this option if you know what you are doing. | |
143 | ||
144 | config CRC32_BIT | |
145 | bool "Classic Algorithm (one bit at a time)" | |
146 | help | |
147 | Calculate checksum one bit at a time. This is VERY slow, but has | |
148 | no lookup table. This is provided as a debugging option. | |
149 | ||
150 | Only choose this option if you are debugging crc32. | |
151 | ||
152 | endchoice | |
153 | ||
ad241528 JN |
154 | config CRC7 |
155 | tristate "CRC7 functions" | |
156 | help | |
157 | This option is provided for the case where no in-kernel-tree | |
158 | modules require CRC7 functions, but a module built outside | |
159 | the kernel tree does. Such modules that use library CRC7 | |
160 | functions require M here. | |
161 | ||
1da177e4 LT |
162 | config LIBCRC32C |
163 | tristate "CRC32c (Castagnoli, et al) Cyclic Redundancy-Check" | |
93027354 | 164 | select CRYPTO |
69c35efc | 165 | select CRYPTO_CRC32C |
1da177e4 LT |
166 | help |
167 | This option is provided for the case where no in-kernel-tree | |
168 | modules require CRC32c functions, but a module built outside the | |
169 | kernel tree does. Such modules that use library CRC32c functions | |
170 | require M here. See Castagnoli93. | |
171 | Module will be libcrc32c. | |
172 | ||
7150962d AS |
173 | config CRC8 |
174 | tristate "CRC8 function" | |
175 | help | |
176 | This option provides CRC8 function. Drivers may select this | |
177 | when they need to do cyclic redundancy check according CRC8 | |
178 | algorithm. Module will be called crc8. | |
179 | ||
e65e1fc2 AV |
180 | config AUDIT_GENERIC |
181 | bool | |
182 | depends on AUDIT && !AUDIT_ARCH | |
183 | default y | |
184 | ||
4b588411 AT |
185 | config AUDIT_ARCH_COMPAT_GENERIC |
186 | bool | |
187 | default n | |
188 | ||
189 | config AUDIT_COMPAT_GENERIC | |
190 | bool | |
191 | depends on AUDIT_GENERIC && AUDIT_ARCH_COMPAT_GENERIC && COMPAT | |
192 | default y | |
193 | ||
a6a9c0f1 DB |
194 | config RANDOM32_SELFTEST |
195 | bool "PRNG perform self test on init" | |
196 | default n | |
197 | help | |
198 | This option enables the 32 bit PRNG library functions to perform a | |
199 | self test on initialization. | |
200 | ||
1da177e4 LT |
201 | # |
202 | # compression support is select'ed if needed | |
203 | # | |
204 | config ZLIB_INFLATE | |
205 | tristate | |
206 | ||
207 | config ZLIB_DEFLATE | |
208 | tristate | |
209 | ||
64c70b1c RP |
210 | config LZO_COMPRESS |
211 | tristate | |
212 | ||
213 | config LZO_DECOMPRESS | |
214 | tristate | |
215 | ||
c72ac7a1 CM |
216 | config LZ4_COMPRESS |
217 | tristate | |
218 | ||
219 | config LZ4HC_COMPRESS | |
220 | tristate | |
221 | ||
e76e1fdf KL |
222 | config LZ4_DECOMPRESS |
223 | tristate | |
224 | ||
24fa0402 LC |
225 | source "lib/xz/Kconfig" |
226 | ||
c8531ab3 PA |
227 | # |
228 | # These all provide a common interface (hence the apparent duplication with | |
229 | # ZLIB_INFLATE; DECOMPRESS_GZIP is just a wrapper.) | |
230 | # | |
231 | config DECOMPRESS_GZIP | |
7856a16e | 232 | select ZLIB_INFLATE |
c8531ab3 PA |
233 | tristate |
234 | ||
235 | config DECOMPRESS_BZIP2 | |
236 | tristate | |
237 | ||
238 | config DECOMPRESS_LZMA | |
239 | tristate | |
240 | ||
3ebe1243 LC |
241 | config DECOMPRESS_XZ |
242 | select XZ_DEC | |
243 | tristate | |
244 | ||
cacb246f AT |
245 | config DECOMPRESS_LZO |
246 | select LZO_DECOMPRESS | |
247 | tristate | |
248 | ||
e76e1fdf KL |
249 | config DECOMPRESS_LZ4 |
250 | select LZ4_DECOMPRESS | |
251 | tristate | |
252 | ||
f14f75b8 JS |
253 | # |
254 | # Generic allocator support is selected if needed | |
255 | # | |
256 | config GENERIC_ALLOCATOR | |
257 | boolean | |
258 | ||
1da177e4 LT |
259 | # |
260 | # reed solomon support is select'ed if needed | |
261 | # | |
262 | config REED_SOLOMON | |
263 | tristate | |
264 | ||
265 | config REED_SOLOMON_ENC8 | |
266 | boolean | |
267 | ||
268 | config REED_SOLOMON_DEC8 | |
269 | boolean | |
270 | ||
271 | config REED_SOLOMON_ENC16 | |
272 | boolean | |
273 | ||
274 | config REED_SOLOMON_DEC16 | |
275 | boolean | |
276 | ||
437aa565 ID |
277 | # |
278 | # BCH support is selected if needed | |
279 | # | |
280 | config BCH | |
281 | tristate | |
282 | ||
283 | config BCH_CONST_PARAMS | |
284 | boolean | |
285 | help | |
286 | Drivers may select this option to force specific constant | |
287 | values for parameters 'm' (Galois field order) and 't' | |
288 | (error correction capability). Those specific values must | |
289 | be set by declaring default values for symbols BCH_CONST_M | |
290 | and BCH_CONST_T. | |
291 | Doing so will enable extra compiler optimizations, | |
292 | improving encoding and decoding performance up to 2x for | |
293 | usual (m,t) values (typically such that m*t < 200). | |
294 | When this option is selected, the BCH library supports | |
295 | only a single (m,t) configuration. This is mainly useful | |
296 | for NAND flash board drivers requiring known, fixed BCH | |
297 | parameters. | |
298 | ||
299 | config BCH_CONST_M | |
300 | int | |
301 | range 5 15 | |
302 | help | |
303 | Constant value for Galois field order 'm'. If 'k' is the | |
304 | number of data bits to protect, 'm' should be chosen such | |
305 | that (k + m*t) <= 2**m - 1. | |
306 | Drivers should declare a default value for this symbol if | |
307 | they select option BCH_CONST_PARAMS. | |
308 | ||
309 | config BCH_CONST_T | |
310 | int | |
311 | help | |
312 | Constant value for error correction capability in bits 't'. | |
313 | Drivers should declare a default value for this symbol if | |
314 | they select option BCH_CONST_PARAMS. | |
315 | ||
f7704347 DM |
316 | # |
317 | # Textsearch support is select'ed if needed | |
318 | # | |
2de4ff7b | 319 | config TEXTSEARCH |
f7704347 | 320 | boolean |
1da177e4 | 321 | |
df3fb93a | 322 | config TEXTSEARCH_KMP |
f7704347 | 323 | tristate |
df3fb93a | 324 | |
8082e4ed | 325 | config TEXTSEARCH_BM |
29cb9f9c | 326 | tristate |
8082e4ed | 327 | |
6408f79c | 328 | config TEXTSEARCH_FSM |
f7704347 | 329 | tristate |
6408f79c | 330 | |
5db53f3e JE |
331 | config BTREE |
332 | boolean | |
333 | ||
3cb98950 DH |
334 | config ASSOCIATIVE_ARRAY |
335 | bool | |
336 | help | |
337 | Generic associative array. Can be searched and iterated over whilst | |
338 | it is being modified. It is also reasonably quick to search and | |
339 | modify. The algorithms are non-recursive, and the trees are highly | |
340 | capacious. | |
341 | ||
342 | See: | |
343 | ||
344 | Documentation/assoc_array.txt | |
345 | ||
346 | for more information. | |
347 | ||
5ea81769 | 348 | config HAS_IOMEM |
ee36c2bf | 349 | boolean |
5ea81769 | 350 | depends on !NO_IOMEM |
087fafd1 | 351 | select GENERIC_IO |
5ea81769 AV |
352 | default y |
353 | ||
ce816fa8 | 354 | config HAS_IOPORT_MAP |
5ea81769 | 355 | boolean |
ce816fa8 | 356 | depends on HAS_IOMEM && !NO_IOPORT_MAP |
ee36c2bf AV |
357 | default y |
358 | ||
411f0f3e HC |
359 | config HAS_DMA |
360 | boolean | |
361 | depends on !NO_DMA | |
362 | default y | |
363 | ||
928923c7 GU |
364 | config CHECK_SIGNATURE |
365 | bool | |
366 | ||
aab46da0 RR |
367 | config CPUMASK_OFFSTACK |
368 | bool "Force CPU masks off stack" if DEBUG_PER_CPU_MAPS | |
369 | help | |
370 | Use dynamic allocation for cpumask_var_t, instead of putting | |
371 | them on the stack. This is a bit more expensive, but avoids | |
372 | stack overflow. | |
373 | ||
8c384cde RR |
374 | config DISABLE_OBSOLETE_CPUMASK_FUNCTIONS |
375 | bool "Disable obsolete cpumask functions" if DEBUG_PER_CPU_MAPS | |
525c1f92 | 376 | depends on BROKEN |
8c384cde | 377 | |
c39649c3 BH |
378 | config CPU_RMAP |
379 | bool | |
380 | depends on SMP | |
381 | ||
75957ba3 TH |
382 | config DQL |
383 | bool | |
384 | ||
e9cc8bdd GU |
385 | # |
386 | # Netlink attribute parsing support is select'ed if needed | |
387 | # | |
388 | config NLATTR | |
389 | bool | |
390 | ||
09d4e0ed PM |
391 | # |
392 | # Generic 64-bit atomic support is selected if needed | |
393 | # | |
394 | config GENERIC_ATOMIC64 | |
395 | bool | |
396 | ||
7463449b CM |
397 | config ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE |
398 | def_bool y if GENERIC_ATOMIC64 | |
399 | ||
b411b363 PR |
400 | config LRU_CACHE |
401 | tristate | |
402 | ||
c5485a7e | 403 | config AVERAGE |
a7a9a24d MB |
404 | bool "Averaging functions" |
405 | help | |
406 | This option is provided for the case where no in-kernel-tree | |
407 | modules require averaging functions, but a module built outside | |
408 | the kernel tree does. Such modules that use library averaging | |
409 | functions require Y here. | |
410 | ||
411 | If unsure, say N. | |
c5485a7e | 412 | |
c6df4b17 DM |
413 | config CLZ_TAB |
414 | bool | |
415 | ||
10f8113e | 416 | config CORDIC |
d89ce936 | 417 | tristate "CORDIC algorithm" |
10f8113e | 418 | help |
435a95c5 MW |
419 | This option provides an implementation of the CORDIC algorithm; |
420 | calculations are in fixed point. Module will be called cordic. | |
10f8113e | 421 | |
9c1c21a0 A |
422 | config DDR |
423 | bool "JEDEC DDR data" | |
424 | help | |
425 | Data from JEDEC specs for DDR SDRAM memories, | |
426 | particularly the AC timing parameters and addressing | |
427 | information. This data is useful for drivers handling | |
428 | DDR SDRAM controllers. | |
429 | ||
d9c46b18 | 430 | config MPILIB |
2e5f094b | 431 | tristate |
c6df4b17 | 432 | select CLZ_TAB |
d9c46b18 DK |
433 | help |
434 | Multiprecision maths library from GnuPG. | |
435 | It is used to implement RSA digital signature verification, | |
436 | which is used by IMA/EVM digital signature extension. | |
437 | ||
5e8898e9 | 438 | config SIGNATURE |
2e5f094b | 439 | tristate |
be440ec7 DK |
440 | depends on KEYS && CRYPTO |
441 | select CRYPTO_SHA1 | |
051dbb91 DK |
442 | select MPILIB |
443 | help | |
444 | Digital signature verification. Currently only RSA is supported. | |
445 | Implementation is done using GnuPG MPI library | |
446 | ||
ab253839 DD |
447 | # |
448 | # libfdt files, only selected if needed. | |
449 | # | |
450 | config LIBFDT | |
451 | bool | |
452 | ||
a77ad6ea DH |
453 | config OID_REGISTRY |
454 | tristate | |
455 | help | |
456 | Enable fast lookup object identifier registry. | |
457 | ||
0635eb8a MG |
458 | config UCS2_STRING |
459 | tristate | |
460 | ||
ee89bd6b GU |
461 | source "lib/fonts/Kconfig" |
462 | ||
2de4ff7b | 463 | endmenu |