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 | ||
19870def | 25 | config GENERIC_FIND_FIRST_BIT |
9ba16087 | 26 | bool |
19870def | 27 | |
b923650b MT |
28 | config NO_GENERIC_PCI_IOPORT_MAP |
29 | bool | |
30 | ||
66eab4df MT |
31 | config GENERIC_PCI_IOMAP |
32 | bool | |
33 | ||
4673ca8e MT |
34 | config GENERIC_IOMAP |
35 | bool | |
66eab4df | 36 | select GENERIC_PCI_IOMAP |
4673ca8e | 37 | |
087fafd1 RW |
38 | config GENERIC_IO |
39 | boolean | |
40 | default n | |
41 | ||
4ccf4bea WS |
42 | config STMP_DEVICE |
43 | bool | |
44 | ||
22b361d1 ON |
45 | config PERCPU_RWSEM |
46 | boolean | |
47 | ||
1da177e4 LT |
48 | config CRC_CCITT |
49 | tristate "CRC-CCITT functions" | |
50 | help | |
51 | This option is provided for the case where no in-kernel-tree | |
52 | modules require CRC-CCITT functions, but a module built outside | |
53 | the kernel tree does. Such modules that use library CRC-CCITT | |
54 | functions require M here. | |
55 | ||
7657ec1f EP |
56 | config CRC16 |
57 | tristate "CRC16 functions" | |
58 | help | |
59 | This option is provided for the case where no in-kernel-tree | |
60 | modules require CRC16 functions, but a module built outside | |
61 | the kernel tree does. Such modules that use library CRC16 | |
62 | functions require M here. | |
63 | ||
f11f594e MP |
64 | config CRC_T10DIF |
65 | tristate "CRC calculation for the T10 Data Integrity Field" | |
66 | help | |
67 | This option is only needed if a module that's not in the | |
68 | kernel tree needs to calculate CRC checks for use with the | |
69 | SCSI data integrity subsystem. | |
70 | ||
3e7cbae7 ID |
71 | config CRC_ITU_T |
72 | tristate "CRC ITU-T V.41 functions" | |
73 | help | |
74 | This option is provided for the case where no in-kernel-tree | |
75 | modules require CRC ITU-T V.41 functions, but a module built outside | |
76 | the kernel tree does. Such modules that use library CRC ITU-T V.41 | |
77 | functions require M here. | |
78 | ||
1da177e4 | 79 | config CRC32 |
46c5801e | 80 | tristate "CRC32/CRC32c functions" |
1da177e4 | 81 | default y |
906d66df | 82 | select BITREVERSE |
1da177e4 LT |
83 | help |
84 | This option is provided for the case where no in-kernel-tree | |
46c5801e DW |
85 | modules require CRC32/CRC32c functions, but a module built outside |
86 | the kernel tree does. Such modules that use library CRC32/CRC32c | |
87 | functions require M here. | |
1da177e4 | 88 | |
3863ef31 BP |
89 | config CRC32_SELFTEST |
90 | bool "CRC32 perform self test on init" | |
91 | default n | |
92 | depends on CRC32 | |
93 | help | |
94 | This option enables the CRC32 library functions to perform a | |
95 | self test on initialization. The self test computes crc32_le | |
96 | and crc32_be over byte strings with random alignment and length | |
97 | and computes the total elapsed time and number of bytes processed. | |
98 | ||
5cde7656 DW |
99 | choice |
100 | prompt "CRC32 implementation" | |
101 | depends on CRC32 | |
102 | default CRC32_SLICEBY8 | |
82edb4ba DW |
103 | help |
104 | This option allows a kernel builder to override the default choice | |
105 | of CRC32 algorithm. Choose the default ("slice by 8") unless you | |
106 | know that you need one of the others. | |
5cde7656 DW |
107 | |
108 | config CRC32_SLICEBY8 | |
109 | bool "Slice by 8 bytes" | |
110 | help | |
111 | Calculate checksum 8 bytes at a time with a clever slicing algorithm. | |
112 | This is the fastest algorithm, but comes with a 8KiB lookup table. | |
113 | Most modern processors have enough cache to hold this table without | |
114 | thrashing the cache. | |
115 | ||
116 | This is the default implementation choice. Choose this one unless | |
117 | you have a good reason not to. | |
118 | ||
119 | config CRC32_SLICEBY4 | |
120 | bool "Slice by 4 bytes" | |
121 | help | |
122 | Calculate checksum 4 bytes at a time with a clever slicing algorithm. | |
123 | This is a bit slower than slice by 8, but has a smaller 4KiB lookup | |
124 | table. | |
125 | ||
126 | Only choose this option if you know what you are doing. | |
127 | ||
128 | config CRC32_SARWATE | |
129 | bool "Sarwate's Algorithm (one byte at a time)" | |
130 | help | |
131 | Calculate checksum a byte at a time using Sarwate's algorithm. This | |
132 | is not particularly fast, but has a small 256 byte lookup table. | |
133 | ||
134 | Only choose this option if you know what you are doing. | |
135 | ||
136 | config CRC32_BIT | |
137 | bool "Classic Algorithm (one bit at a time)" | |
138 | help | |
139 | Calculate checksum one bit at a time. This is VERY slow, but has | |
140 | no lookup table. This is provided as a debugging option. | |
141 | ||
142 | Only choose this option if you are debugging crc32. | |
143 | ||
144 | endchoice | |
145 | ||
ad241528 JN |
146 | config CRC7 |
147 | tristate "CRC7 functions" | |
148 | help | |
149 | This option is provided for the case where no in-kernel-tree | |
150 | modules require CRC7 functions, but a module built outside | |
151 | the kernel tree does. Such modules that use library CRC7 | |
152 | functions require M here. | |
153 | ||
1da177e4 LT |
154 | config LIBCRC32C |
155 | tristate "CRC32c (Castagnoli, et al) Cyclic Redundancy-Check" | |
93027354 | 156 | select CRYPTO |
69c35efc | 157 | select CRYPTO_CRC32C |
1da177e4 LT |
158 | help |
159 | This option is provided for the case where no in-kernel-tree | |
160 | modules require CRC32c functions, but a module built outside the | |
161 | kernel tree does. Such modules that use library CRC32c functions | |
162 | require M here. See Castagnoli93. | |
163 | Module will be libcrc32c. | |
164 | ||
7150962d AS |
165 | config CRC8 |
166 | tristate "CRC8 function" | |
167 | help | |
168 | This option provides CRC8 function. Drivers may select this | |
169 | when they need to do cyclic redundancy check according CRC8 | |
170 | algorithm. Module will be called crc8. | |
171 | ||
e65e1fc2 AV |
172 | config AUDIT_GENERIC |
173 | bool | |
174 | depends on AUDIT && !AUDIT_ARCH | |
175 | default y | |
176 | ||
1da177e4 LT |
177 | # |
178 | # compression support is select'ed if needed | |
179 | # | |
180 | config ZLIB_INFLATE | |
181 | tristate | |
182 | ||
183 | config ZLIB_DEFLATE | |
184 | tristate | |
185 | ||
64c70b1c RP |
186 | config LZO_COMPRESS |
187 | tristate | |
188 | ||
189 | config LZO_DECOMPRESS | |
190 | tristate | |
191 | ||
6fa3eb70 S |
192 | config LZ4K |
193 | bool "LZ4K compression" | |
194 | default n | |
195 | ||
24fa0402 LC |
196 | source "lib/xz/Kconfig" |
197 | ||
c8531ab3 PA |
198 | # |
199 | # These all provide a common interface (hence the apparent duplication with | |
200 | # ZLIB_INFLATE; DECOMPRESS_GZIP is just a wrapper.) | |
201 | # | |
202 | config DECOMPRESS_GZIP | |
7856a16e | 203 | select ZLIB_INFLATE |
c8531ab3 PA |
204 | tristate |
205 | ||
206 | config DECOMPRESS_BZIP2 | |
207 | tristate | |
208 | ||
209 | config DECOMPRESS_LZMA | |
210 | tristate | |
211 | ||
3ebe1243 LC |
212 | config DECOMPRESS_XZ |
213 | select XZ_DEC | |
214 | tristate | |
215 | ||
cacb246f AT |
216 | config DECOMPRESS_LZO |
217 | select LZO_DECOMPRESS | |
218 | tristate | |
219 | ||
f14f75b8 JS |
220 | # |
221 | # Generic allocator support is selected if needed | |
222 | # | |
223 | config GENERIC_ALLOCATOR | |
224 | boolean | |
225 | ||
1da177e4 LT |
226 | # |
227 | # reed solomon support is select'ed if needed | |
228 | # | |
229 | config REED_SOLOMON | |
230 | tristate | |
231 | ||
232 | config REED_SOLOMON_ENC8 | |
233 | boolean | |
234 | ||
235 | config REED_SOLOMON_DEC8 | |
236 | boolean | |
237 | ||
238 | config REED_SOLOMON_ENC16 | |
239 | boolean | |
240 | ||
241 | config REED_SOLOMON_DEC16 | |
242 | boolean | |
243 | ||
437aa565 ID |
244 | # |
245 | # BCH support is selected if needed | |
246 | # | |
247 | config BCH | |
248 | tristate | |
249 | ||
250 | config BCH_CONST_PARAMS | |
251 | boolean | |
252 | help | |
253 | Drivers may select this option to force specific constant | |
254 | values for parameters 'm' (Galois field order) and 't' | |
255 | (error correction capability). Those specific values must | |
256 | be set by declaring default values for symbols BCH_CONST_M | |
257 | and BCH_CONST_T. | |
258 | Doing so will enable extra compiler optimizations, | |
259 | improving encoding and decoding performance up to 2x for | |
260 | usual (m,t) values (typically such that m*t < 200). | |
261 | When this option is selected, the BCH library supports | |
262 | only a single (m,t) configuration. This is mainly useful | |
263 | for NAND flash board drivers requiring known, fixed BCH | |
264 | parameters. | |
265 | ||
266 | config BCH_CONST_M | |
267 | int | |
268 | range 5 15 | |
269 | help | |
270 | Constant value for Galois field order 'm'. If 'k' is the | |
271 | number of data bits to protect, 'm' should be chosen such | |
272 | that (k + m*t) <= 2**m - 1. | |
273 | Drivers should declare a default value for this symbol if | |
274 | they select option BCH_CONST_PARAMS. | |
275 | ||
276 | config BCH_CONST_T | |
277 | int | |
278 | help | |
279 | Constant value for error correction capability in bits 't'. | |
280 | Drivers should declare a default value for this symbol if | |
281 | they select option BCH_CONST_PARAMS. | |
282 | ||
f7704347 DM |
283 | # |
284 | # Textsearch support is select'ed if needed | |
285 | # | |
2de4ff7b | 286 | config TEXTSEARCH |
f7704347 | 287 | boolean |
1da177e4 | 288 | |
df3fb93a | 289 | config TEXTSEARCH_KMP |
f7704347 | 290 | tristate |
df3fb93a | 291 | |
8082e4ed | 292 | config TEXTSEARCH_BM |
29cb9f9c | 293 | tristate |
8082e4ed | 294 | |
6408f79c | 295 | config TEXTSEARCH_FSM |
f7704347 | 296 | tristate |
6408f79c | 297 | |
5db53f3e JE |
298 | config BTREE |
299 | boolean | |
300 | ||
5ea81769 | 301 | config HAS_IOMEM |
ee36c2bf | 302 | boolean |
5ea81769 | 303 | depends on !NO_IOMEM |
087fafd1 | 304 | select GENERIC_IO |
5ea81769 AV |
305 | default y |
306 | ||
307 | config HAS_IOPORT | |
308 | boolean | |
309 | depends on HAS_IOMEM && !NO_IOPORT | |
ee36c2bf AV |
310 | default y |
311 | ||
411f0f3e HC |
312 | config HAS_DMA |
313 | boolean | |
314 | depends on !NO_DMA | |
315 | default y | |
316 | ||
928923c7 GU |
317 | config CHECK_SIGNATURE |
318 | bool | |
319 | ||
aab46da0 RR |
320 | config CPUMASK_OFFSTACK |
321 | bool "Force CPU masks off stack" if DEBUG_PER_CPU_MAPS | |
322 | help | |
323 | Use dynamic allocation for cpumask_var_t, instead of putting | |
324 | them on the stack. This is a bit more expensive, but avoids | |
325 | stack overflow. | |
326 | ||
8c384cde RR |
327 | config DISABLE_OBSOLETE_CPUMASK_FUNCTIONS |
328 | bool "Disable obsolete cpumask functions" if DEBUG_PER_CPU_MAPS | |
525c1f92 | 329 | depends on BROKEN |
8c384cde | 330 | |
c39649c3 BH |
331 | config CPU_RMAP |
332 | bool | |
333 | depends on SMP | |
334 | ||
75957ba3 TH |
335 | config DQL |
336 | bool | |
337 | ||
e9cc8bdd GU |
338 | # |
339 | # Netlink attribute parsing support is select'ed if needed | |
340 | # | |
341 | config NLATTR | |
342 | bool | |
343 | ||
09d4e0ed PM |
344 | # |
345 | # Generic 64-bit atomic support is selected if needed | |
346 | # | |
347 | config GENERIC_ATOMIC64 | |
348 | bool | |
349 | ||
7463449b CM |
350 | config ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE |
351 | def_bool y if GENERIC_ATOMIC64 | |
352 | ||
b411b363 PR |
353 | config LRU_CACHE |
354 | tristate | |
355 | ||
c5485a7e | 356 | config AVERAGE |
a7a9a24d MB |
357 | bool "Averaging functions" |
358 | help | |
359 | This option is provided for the case where no in-kernel-tree | |
360 | modules require averaging functions, but a module built outside | |
361 | the kernel tree does. Such modules that use library averaging | |
362 | functions require Y here. | |
363 | ||
364 | If unsure, say N. | |
c5485a7e | 365 | |
c6df4b17 DM |
366 | config CLZ_TAB |
367 | bool | |
368 | ||
10f8113e | 369 | config CORDIC |
d89ce936 | 370 | tristate "CORDIC algorithm" |
10f8113e | 371 | help |
435a95c5 MW |
372 | This option provides an implementation of the CORDIC algorithm; |
373 | calculations are in fixed point. Module will be called cordic. | |
10f8113e | 374 | |
9c1c21a0 A |
375 | config DDR |
376 | bool "JEDEC DDR data" | |
377 | help | |
378 | Data from JEDEC specs for DDR SDRAM memories, | |
379 | particularly the AC timing parameters and addressing | |
380 | information. This data is useful for drivers handling | |
381 | DDR SDRAM controllers. | |
382 | ||
d9c46b18 | 383 | config MPILIB |
2e5f094b | 384 | tristate |
c6df4b17 | 385 | select CLZ_TAB |
d9c46b18 DK |
386 | help |
387 | Multiprecision maths library from GnuPG. | |
388 | It is used to implement RSA digital signature verification, | |
389 | which is used by IMA/EVM digital signature extension. | |
390 | ||
5e8898e9 | 391 | config SIGNATURE |
2e5f094b | 392 | tristate |
be440ec7 DK |
393 | depends on KEYS && CRYPTO |
394 | select CRYPTO_SHA1 | |
051dbb91 DK |
395 | select MPILIB |
396 | help | |
397 | Digital signature verification. Currently only RSA is supported. | |
398 | Implementation is done using GnuPG MPI library | |
399 | ||
ab253839 DD |
400 | # |
401 | # libfdt files, only selected if needed. | |
402 | # | |
403 | config LIBFDT | |
404 | bool | |
405 | ||
a77ad6ea DH |
406 | config OID_REGISTRY |
407 | tristate | |
408 | help | |
409 | Enable fast lookup object identifier registry. | |
410 | ||
0635eb8a MG |
411 | config UCS2_STRING |
412 | tristate | |
413 | ||
2de4ff7b | 414 | endmenu |