Commit | Line | Data |
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ec8f24b7 | 1 | # SPDX-License-Identifier: GPL-2.0-only |
1da177e4 LT |
2 | # |
3 | # Library configuration | |
4 | # | |
5 | ||
4370aa4a LJ |
6 | config BINARY_PRINTF |
7 | def_bool n | |
8 | ||
1da177e4 LT |
9 | menu "Library routines" |
10 | ||
f5e70d0f DW |
11 | config RAID6_PQ |
12 | tristate | |
13 | ||
be85f93a DV |
14 | config RAID6_PQ_BENCHMARK |
15 | bool "Automatically choose fastest RAID6 PQ functions" | |
16 | depends on RAID6_PQ | |
17 | default y | |
18 | help | |
19 | Benchmark all available RAID6 PQ functions on init and choose the | |
20 | fastest one. | |
21 | ||
d2218d4e MV |
22 | config LINEAR_RANGES |
23 | tristate | |
24 | ||
554aae35 VO |
25 | config PACKING |
26 | bool "Generic bitfield packing and unpacking" | |
1280d4b7 | 27 | select BITREVERSE |
554aae35 VO |
28 | default n |
29 | help | |
30 | This option provides the packing() helper function, which permits | |
31 | converting bitfields between a CPU-usable representation and a | |
32 | memory representation that can have any combination of these quirks: | |
33 | - Is little endian (bytes are reversed within a 32-bit group) | |
34 | - The least-significant 32-bit word comes first (within a 64-bit | |
35 | group) | |
36 | - The most significant bit of a byte is at its right (bit 0 of a | |
37 | register description is numerically 2^7). | |
38 | Drivers may use these helpers to match the bit indices as described | |
39 | in the data sheets of the peripherals they are in control of. | |
40 | ||
41 | When in doubt, say N. | |
42 | ||
a5cfc1ec AM |
43 | config BITREVERSE |
44 | tristate | |
45 | ||
556d2f05 | 46 | config HAVE_ARCH_BITREVERSE |
841c0090 | 47 | bool |
556d2f05 | 48 | default n |
556d2f05 | 49 | help |
9e522c0d AM |
50 | This option enables the use of hardware bit-reversal instructions on |
51 | architectures which support such operations. | |
556d2f05 | 52 | |
e6226997 | 53 | config ARCH_HAS_STRNCPY_FROM_USER |
2922585b DM |
54 | bool |
55 | ||
e6226997 | 56 | config ARCH_HAS_STRNLEN_USER |
a08c5356 LT |
57 | bool |
58 | ||
e6226997 AB |
59 | config GENERIC_STRNCPY_FROM_USER |
60 | def_bool !ARCH_HAS_STRNCPY_FROM_USER | |
61 | ||
62 | config GENERIC_STRNLEN_USER | |
63 | def_bool !ARCH_HAS_STRNLEN_USER | |
64 | ||
4cd5773a AS |
65 | config GENERIC_NET_UTILS |
66 | bool | |
67 | ||
2c64e9cb AS |
68 | source "lib/math/Kconfig" |
69 | ||
b923650b MT |
70 | config NO_GENERIC_PCI_IOPORT_MAP |
71 | bool | |
72 | ||
66eab4df MT |
73 | config GENERIC_PCI_IOMAP |
74 | bool | |
75 | ||
4673ca8e MT |
76 | config GENERIC_IOMAP |
77 | bool | |
66eab4df | 78 | select GENERIC_PCI_IOMAP |
4673ca8e | 79 | |
4ccf4bea WS |
80 | config STMP_DEVICE |
81 | bool | |
22b361d1 | 82 | |
bc08b449 LT |
83 | config ARCH_USE_CMPXCHG_LOCKREF |
84 | bool | |
85 | ||
72d93104 LT |
86 | config ARCH_HAS_FAST_MULTIPLIER |
87 | bool | |
88 | ||
2ce0d7f9 MB |
89 | config ARCH_USE_SYM_ANNOTATIONS |
90 | bool | |
91 | ||
031e3601 ZY |
92 | config INDIRECT_PIO |
93 | bool "Access I/O in non-MMIO mode" | |
94 | depends on ARM64 | |
fcbfe812 | 95 | depends on HAS_IOPORT |
031e3601 ZY |
96 | help |
97 | On some platforms where no separate I/O space exists, there are I/O | |
98 | hosts which can not be accessed in MMIO mode. Using the logical PIO | |
99 | mechanism, the host-local I/O resource can be mapped into system | |
100 | logic PIO space shared with MMIO hosts, such as PCI/PCIe, then the | |
101 | system can access the I/O devices with the mapped-logic PIO through | |
102 | I/O accessors. | |
103 | ||
104 | This way has relatively little I/O performance cost. Please make | |
105 | sure your devices really need this configure item enabled. | |
106 | ||
107 | When in doubt, say N. | |
108 | ||
ca2e3342 JB |
109 | config INDIRECT_IOMEM |
110 | bool | |
111 | help | |
112 | This is selected by other options/architectures to provide the | |
113 | emulated iomem accessors. | |
114 | ||
115 | config INDIRECT_IOMEM_FALLBACK | |
116 | bool | |
117 | depends on INDIRECT_IOMEM | |
118 | help | |
119 | If INDIRECT_IOMEM is selected, this enables falling back to plain | |
120 | mmio accesses when the IO memory address is not a registered | |
121 | emulated region. | |
122 | ||
d593d64f PS |
123 | config TRACE_MMIO_ACCESS |
124 | bool "Register read/write tracing" | |
125 | depends on TRACING && ARCH_HAVE_TRACE_MMIO_ACCESS | |
126 | help | |
127 | Create tracepoints for MMIO read/write operations. These trace events | |
128 | can be used for logging all MMIO read/write operations. | |
129 | ||
e56e1898 JF |
130 | source "lib/crypto/Kconfig" |
131 | ||
1da177e4 LT |
132 | config CRC_CCITT |
133 | tristate "CRC-CCITT functions" | |
134 | help | |
135 | This option is provided for the case where no in-kernel-tree | |
136 | modules require CRC-CCITT functions, but a module built outside | |
137 | the kernel tree does. Such modules that use library CRC-CCITT | |
138 | functions require M here. | |
139 | ||
7657ec1f EP |
140 | config CRC16 |
141 | tristate "CRC16 functions" | |
142 | help | |
143 | This option is provided for the case where no in-kernel-tree | |
144 | modules require CRC16 functions, but a module built outside | |
145 | the kernel tree does. Such modules that use library CRC16 | |
146 | functions require M here. | |
147 | ||
f11f594e MP |
148 | config CRC_T10DIF |
149 | tristate "CRC calculation for the T10 Data Integrity Field" | |
68411521 HX |
150 | select CRYPTO |
151 | select CRYPTO_CRCT10DIF | |
f11f594e MP |
152 | help |
153 | This option is only needed if a module that's not in the | |
154 | kernel tree needs to calculate CRC checks for use with the | |
155 | SCSI data integrity subsystem. | |
156 | ||
f3813f4b KB |
157 | config CRC64_ROCKSOFT |
158 | tristate "CRC calculation for the Rocksoft model CRC64" | |
159 | select CRC64 | |
160 | select CRYPTO | |
161 | select CRYPTO_CRC64_ROCKSOFT | |
162 | help | |
163 | This option provides a CRC64 API to a registered crypto driver. | |
164 | This is used with the block layer's data integrity subsystem. | |
165 | ||
3e7cbae7 ID |
166 | config CRC_ITU_T |
167 | tristate "CRC ITU-T V.41 functions" | |
168 | help | |
169 | This option is provided for the case where no in-kernel-tree | |
170 | modules require CRC ITU-T V.41 functions, but a module built outside | |
171 | the kernel tree does. Such modules that use library CRC ITU-T V.41 | |
172 | functions require M here. | |
173 | ||
1da177e4 | 174 | config CRC32 |
46c5801e | 175 | tristate "CRC32/CRC32c functions" |
1da177e4 | 176 | default y |
906d66df | 177 | select BITREVERSE |
1da177e4 LT |
178 | help |
179 | This option is provided for the case where no in-kernel-tree | |
46c5801e DW |
180 | modules require CRC32/CRC32c functions, but a module built outside |
181 | the kernel tree does. Such modules that use library CRC32/CRC32c | |
182 | functions require M here. | |
1da177e4 | 183 | |
3863ef31 | 184 | config CRC32_SELFTEST |
5fb7f874 | 185 | tristate "CRC32 perform self test on init" |
3863ef31 BP |
186 | depends on CRC32 |
187 | help | |
188 | This option enables the CRC32 library functions to perform a | |
189 | self test on initialization. The self test computes crc32_le | |
190 | and crc32_be over byte strings with random alignment and length | |
191 | and computes the total elapsed time and number of bytes processed. | |
192 | ||
5cde7656 DW |
193 | choice |
194 | prompt "CRC32 implementation" | |
195 | depends on CRC32 | |
196 | default CRC32_SLICEBY8 | |
82edb4ba DW |
197 | help |
198 | This option allows a kernel builder to override the default choice | |
199 | of CRC32 algorithm. Choose the default ("slice by 8") unless you | |
200 | know that you need one of the others. | |
5cde7656 DW |
201 | |
202 | config CRC32_SLICEBY8 | |
203 | bool "Slice by 8 bytes" | |
204 | help | |
205 | Calculate checksum 8 bytes at a time with a clever slicing algorithm. | |
206 | This is the fastest algorithm, but comes with a 8KiB lookup table. | |
207 | Most modern processors have enough cache to hold this table without | |
208 | thrashing the cache. | |
209 | ||
210 | This is the default implementation choice. Choose this one unless | |
211 | you have a good reason not to. | |
212 | ||
213 | config CRC32_SLICEBY4 | |
214 | bool "Slice by 4 bytes" | |
215 | help | |
216 | Calculate checksum 4 bytes at a time with a clever slicing algorithm. | |
217 | This is a bit slower than slice by 8, but has a smaller 4KiB lookup | |
218 | table. | |
219 | ||
220 | Only choose this option if you know what you are doing. | |
221 | ||
222 | config CRC32_SARWATE | |
223 | bool "Sarwate's Algorithm (one byte at a time)" | |
224 | help | |
225 | Calculate checksum a byte at a time using Sarwate's algorithm. This | |
226 | is not particularly fast, but has a small 256 byte lookup table. | |
227 | ||
228 | Only choose this option if you know what you are doing. | |
229 | ||
230 | config CRC32_BIT | |
231 | bool "Classic Algorithm (one bit at a time)" | |
232 | help | |
233 | Calculate checksum one bit at a time. This is VERY slow, but has | |
234 | no lookup table. This is provided as a debugging option. | |
235 | ||
236 | Only choose this option if you are debugging crc32. | |
237 | ||
238 | endchoice | |
239 | ||
feba04fd CL |
240 | config CRC64 |
241 | tristate "CRC64 functions" | |
242 | help | |
243 | This option is provided for the case where no in-kernel-tree | |
244 | modules require CRC64 functions, but a module built outside | |
245 | the kernel tree does. Such modules that use library CRC64 | |
246 | functions require M here. | |
247 | ||
0cbaa448 JK |
248 | config CRC4 |
249 | tristate "CRC4 functions" | |
250 | help | |
251 | This option is provided for the case where no in-kernel-tree | |
252 | modules require CRC4 functions, but a module built outside | |
253 | the kernel tree does. Such modules that use library CRC4 | |
254 | functions require M here. | |
255 | ||
ad241528 JN |
256 | config CRC7 |
257 | tristate "CRC7 functions" | |
258 | help | |
259 | This option is provided for the case where no in-kernel-tree | |
260 | modules require CRC7 functions, but a module built outside | |
261 | the kernel tree does. Such modules that use library CRC7 | |
262 | functions require M here. | |
263 | ||
1da177e4 LT |
264 | config LIBCRC32C |
265 | tristate "CRC32c (Castagnoli, et al) Cyclic Redundancy-Check" | |
93027354 | 266 | select CRYPTO |
69c35efc | 267 | select CRYPTO_CRC32C |
1da177e4 LT |
268 | help |
269 | This option is provided for the case where no in-kernel-tree | |
270 | modules require CRC32c functions, but a module built outside the | |
271 | kernel tree does. Such modules that use library CRC32c functions | |
272 | require M here. See Castagnoli93. | |
273 | Module will be libcrc32c. | |
274 | ||
7150962d AS |
275 | config CRC8 |
276 | tristate "CRC8 function" | |
277 | help | |
278 | This option provides CRC8 function. Drivers may select this | |
279 | when they need to do cyclic redundancy check according CRC8 | |
280 | algorithm. Module will be called crc8. | |
281 | ||
5d240522 NT |
282 | config XXHASH |
283 | tristate | |
284 | ||
e65e1fc2 AV |
285 | config AUDIT_GENERIC |
286 | bool | |
287 | depends on AUDIT && !AUDIT_ARCH | |
288 | default y | |
289 | ||
4b588411 AT |
290 | config AUDIT_ARCH_COMPAT_GENERIC |
291 | bool | |
292 | default n | |
293 | ||
294 | config AUDIT_COMPAT_GENERIC | |
295 | bool | |
296 | depends on AUDIT_GENERIC && AUDIT_ARCH_COMPAT_GENERIC && COMPAT | |
297 | default y | |
298 | ||
a6a9c0f1 DB |
299 | config RANDOM32_SELFTEST |
300 | bool "PRNG perform self test on init" | |
a6a9c0f1 DB |
301 | help |
302 | This option enables the 32 bit PRNG library functions to perform a | |
303 | self test on initialization. | |
304 | ||
1da177e4 LT |
305 | # |
306 | # compression support is select'ed if needed | |
307 | # | |
2da572c9 | 308 | config 842_COMPRESS |
5b571677 | 309 | select CRC32 |
2da572c9 DS |
310 | tristate |
311 | ||
312 | config 842_DECOMPRESS | |
5b571677 | 313 | select CRC32 |
2da572c9 DS |
314 | tristate |
315 | ||
1da177e4 LT |
316 | config ZLIB_INFLATE |
317 | tristate | |
318 | ||
319 | config ZLIB_DEFLATE | |
320 | tristate | |
1fd4e5c3 | 321 | select BITREVERSE |
1da177e4 | 322 | |
aa5b395b MZ |
323 | config ZLIB_DFLTCC |
324 | def_bool y | |
325 | depends on S390 | |
326 | prompt "Enable s390x DEFLATE CONVERSION CALL support for kernel zlib" | |
327 | help | |
328 | Enable s390x hardware support for zlib in the kernel. | |
329 | ||
64c70b1c RP |
330 | config LZO_COMPRESS |
331 | tristate | |
332 | ||
333 | config LZO_DECOMPRESS | |
334 | tristate | |
335 | ||
c72ac7a1 CM |
336 | config LZ4_COMPRESS |
337 | tristate | |
338 | ||
339 | config LZ4HC_COMPRESS | |
340 | tristate | |
341 | ||
e76e1fdf KL |
342 | config LZ4_DECOMPRESS |
343 | tristate | |
344 | ||
637a642f | 345 | config ZSTD_COMMON |
73f3d1b4 NT |
346 | select XXHASH |
347 | tristate | |
348 | ||
637a642f AK |
349 | config ZSTD_COMPRESS |
350 | select ZSTD_COMMON | |
351 | tristate | |
352 | ||
73f3d1b4 | 353 | config ZSTD_DECOMPRESS |
637a642f | 354 | select ZSTD_COMMON |
73f3d1b4 NT |
355 | tristate |
356 | ||
24fa0402 LC |
357 | source "lib/xz/Kconfig" |
358 | ||
c8531ab3 PA |
359 | # |
360 | # These all provide a common interface (hence the apparent duplication with | |
361 | # ZLIB_INFLATE; DECOMPRESS_GZIP is just a wrapper.) | |
362 | # | |
363 | config DECOMPRESS_GZIP | |
7856a16e | 364 | select ZLIB_INFLATE |
c8531ab3 PA |
365 | tristate |
366 | ||
367 | config DECOMPRESS_BZIP2 | |
368 | tristate | |
369 | ||
370 | config DECOMPRESS_LZMA | |
371 | tristate | |
372 | ||
3ebe1243 LC |
373 | config DECOMPRESS_XZ |
374 | select XZ_DEC | |
375 | tristate | |
376 | ||
cacb246f AT |
377 | config DECOMPRESS_LZO |
378 | select LZO_DECOMPRESS | |
379 | tristate | |
380 | ||
e76e1fdf KL |
381 | config DECOMPRESS_LZ4 |
382 | select LZ4_DECOMPRESS | |
383 | tristate | |
384 | ||
4963bb2b NT |
385 | config DECOMPRESS_ZSTD |
386 | select ZSTD_DECOMPRESS | |
387 | tristate | |
388 | ||
f14f75b8 JS |
389 | # |
390 | # Generic allocator support is selected if needed | |
391 | # | |
392 | config GENERIC_ALLOCATOR | |
6341e62b | 393 | bool |
f14f75b8 | 394 | |
1da177e4 LT |
395 | # |
396 | # reed solomon support is select'ed if needed | |
397 | # | |
398 | config REED_SOLOMON | |
399 | tristate | |
400 | ||
401 | config REED_SOLOMON_ENC8 | |
6341e62b | 402 | bool |
1da177e4 LT |
403 | |
404 | config REED_SOLOMON_DEC8 | |
6341e62b | 405 | bool |
1da177e4 LT |
406 | |
407 | config REED_SOLOMON_ENC16 | |
6341e62b | 408 | bool |
1da177e4 LT |
409 | |
410 | config REED_SOLOMON_DEC16 | |
6341e62b | 411 | bool |
1da177e4 | 412 | |
437aa565 ID |
413 | # |
414 | # BCH support is selected if needed | |
415 | # | |
416 | config BCH | |
417 | tristate | |
418 | ||
419 | config BCH_CONST_PARAMS | |
6341e62b | 420 | bool |
437aa565 ID |
421 | help |
422 | Drivers may select this option to force specific constant | |
423 | values for parameters 'm' (Galois field order) and 't' | |
424 | (error correction capability). Those specific values must | |
425 | be set by declaring default values for symbols BCH_CONST_M | |
426 | and BCH_CONST_T. | |
427 | Doing so will enable extra compiler optimizations, | |
428 | improving encoding and decoding performance up to 2x for | |
429 | usual (m,t) values (typically such that m*t < 200). | |
430 | When this option is selected, the BCH library supports | |
431 | only a single (m,t) configuration. This is mainly useful | |
432 | for NAND flash board drivers requiring known, fixed BCH | |
433 | parameters. | |
434 | ||
435 | config BCH_CONST_M | |
436 | int | |
437 | range 5 15 | |
438 | help | |
439 | Constant value for Galois field order 'm'. If 'k' is the | |
440 | number of data bits to protect, 'm' should be chosen such | |
441 | that (k + m*t) <= 2**m - 1. | |
442 | Drivers should declare a default value for this symbol if | |
443 | they select option BCH_CONST_PARAMS. | |
444 | ||
445 | config BCH_CONST_T | |
446 | int | |
447 | help | |
448 | Constant value for error correction capability in bits 't'. | |
449 | Drivers should declare a default value for this symbol if | |
450 | they select option BCH_CONST_PARAMS. | |
451 | ||
f7704347 DM |
452 | # |
453 | # Textsearch support is select'ed if needed | |
454 | # | |
2de4ff7b | 455 | config TEXTSEARCH |
6341e62b | 456 | bool |
1da177e4 | 457 | |
df3fb93a | 458 | config TEXTSEARCH_KMP |
f7704347 | 459 | tristate |
df3fb93a | 460 | |
8082e4ed | 461 | config TEXTSEARCH_BM |
29cb9f9c | 462 | tristate |
8082e4ed | 463 | |
6408f79c | 464 | config TEXTSEARCH_FSM |
f7704347 | 465 | tristate |
6408f79c | 466 | |
5db53f3e | 467 | config BTREE |
6341e62b | 468 | bool |
5db53f3e | 469 | |
a88cc108 | 470 | config INTERVAL_TREE |
6341e62b | 471 | bool |
a88cc108 CW |
472 | help |
473 | Simple, embeddable, interval-tree. Can find the start of an | |
474 | overlapping range in log(n) time and then iterate over all | |
475 | overlapping nodes. The algorithm is implemented as an | |
476 | augmented rbtree. | |
477 | ||
478 | See: | |
479 | ||
14bbe3e3 | 480 | Documentation/core-api/rbtree.rst |
a88cc108 CW |
481 | |
482 | for more information. | |
483 | ||
5fe93786 JG |
484 | config INTERVAL_TREE_SPAN_ITER |
485 | bool | |
486 | depends on INTERVAL_TREE | |
487 | ||
02c02bf1 | 488 | config XARRAY_MULTI |
57578c2e | 489 | bool |
02c02bf1 MW |
490 | help |
491 | Support entries which occupy multiple consecutive indices in the | |
492 | XArray. | |
57578c2e | 493 | |
3cb98950 DH |
494 | config ASSOCIATIVE_ARRAY |
495 | bool | |
496 | help | |
497 | Generic associative array. Can be searched and iterated over whilst | |
498 | it is being modified. It is also reasonably quick to search and | |
499 | modify. The algorithms are non-recursive, and the trees are highly | |
500 | capacious. | |
501 | ||
502 | See: | |
503 | ||
5fb94e9c | 504 | Documentation/core-api/assoc_array.rst |
3cb98950 DH |
505 | |
506 | for more information. | |
507 | ||
5ea81769 | 508 | config HAS_IOMEM |
6341e62b | 509 | bool |
5ea81769 AV |
510 | depends on !NO_IOMEM |
511 | default y | |
512 | ||
fcbfe812 NS |
513 | config HAS_IOPORT |
514 | bool | |
515 | ||
ce816fa8 | 516 | config HAS_IOPORT_MAP |
6341e62b | 517 | bool |
ce816fa8 | 518 | depends on HAS_IOMEM && !NO_IOPORT_MAP |
ee36c2bf AV |
519 | default y |
520 | ||
cf65a0f6 | 521 | source "kernel/dma/Kconfig" |
411f0f3e | 522 | |
e80a0af4 BVA |
523 | config SGL_ALLOC |
524 | bool | |
525 | default n | |
526 | ||
a4ce5a48 CH |
527 | config IOMMU_HELPER |
528 | bool | |
529 | ||
928923c7 GU |
530 | config CHECK_SIGNATURE |
531 | bool | |
532 | ||
aab46da0 RR |
533 | config CPUMASK_OFFSTACK |
534 | bool "Force CPU masks off stack" if DEBUG_PER_CPU_MAPS | |
535 | help | |
536 | Use dynamic allocation for cpumask_var_t, instead of putting | |
537 | them on the stack. This is a bit more expensive, but avoids | |
538 | stack overflow. | |
539 | ||
6f9c07be | 540 | config FORCE_NR_CPUS |
fe5759d5 YN |
541 | bool "Set number of CPUs at compile time" |
542 | depends on SMP && EXPERT && !COMPILE_TEST | |
6f9c07be YN |
543 | help |
544 | Say Yes if you have NR_CPUS set to an actual number of possible | |
545 | CPUs in your system, not to a default value. This forces the core | |
546 | code to rely on compile-time value and optimize kernel routines | |
547 | better. | |
548 | ||
c39649c3 BH |
549 | config CPU_RMAP |
550 | bool | |
551 | depends on SMP | |
552 | ||
75957ba3 TH |
553 | config DQL |
554 | bool | |
555 | ||
b0125085 GS |
556 | config GLOB |
557 | bool | |
558 | # This actually supports modular compilation, but the module overhead | |
559 | # is ridiculous for the amount of code involved. Until an out-of-tree | |
560 | # driver asks for it, we'll just link it directly it into the kernel | |
561 | # when required. Since we're ignoring out-of-tree users, there's also | |
562 | # no need bother prompting for a manual decision: | |
563 | # prompt "glob_match() function" | |
564 | help | |
565 | This option provides a glob_match function for performing | |
566 | simple text pattern matching. It originated in the ATA code | |
567 | to blacklist particular drive models, but other device drivers | |
568 | may need similar functionality. | |
569 | ||
570 | All drivers in the Linux kernel tree that require this function | |
571 | should automatically select this option. Say N unless you | |
572 | are compiling an out-of tree driver which tells you that it | |
573 | depends on this. | |
574 | ||
5f9be824 | 575 | config GLOB_SELFTEST |
ba95b045 | 576 | tristate "glob self-test on init" |
5f9be824 GS |
577 | depends on GLOB |
578 | help | |
579 | This option enables a simple self-test of the glob_match | |
580 | function on startup. It is primarily useful for people | |
581 | working on the code to ensure they haven't introduced any | |
582 | regressions. | |
583 | ||
584 | It only adds a little bit of code and slows kernel boot (or | |
585 | module load) by a small amount, so you're welcome to play with | |
586 | it, but you probably don't need it. | |
587 | ||
e9cc8bdd GU |
588 | # |
589 | # Netlink attribute parsing support is select'ed if needed | |
590 | # | |
591 | config NLATTR | |
592 | bool | |
593 | ||
09d4e0ed PM |
594 | # |
595 | # Generic 64-bit atomic support is selected if needed | |
596 | # | |
597 | config GENERIC_ATOMIC64 | |
598 | bool | |
599 | ||
b411b363 PR |
600 | config LRU_CACHE |
601 | tristate | |
602 | ||
c6df4b17 DM |
603 | config CLZ_TAB |
604 | bool | |
605 | ||
511cbce2 CH |
606 | config IRQ_POLL |
607 | bool "IRQ polling library" | |
608 | help | |
609 | Helper library to poll interrupt mitigation using polling. | |
610 | ||
d9c46b18 | 611 | config MPILIB |
2e5f094b | 612 | tristate |
c6df4b17 | 613 | select CLZ_TAB |
d9c46b18 DK |
614 | help |
615 | Multiprecision maths library from GnuPG. | |
616 | It is used to implement RSA digital signature verification, | |
617 | which is used by IMA/EVM digital signature extension. | |
618 | ||
5e8898e9 | 619 | config SIGNATURE |
2e5f094b | 620 | tristate |
0d1f64f6 DK |
621 | depends on KEYS |
622 | select CRYPTO | |
be440ec7 | 623 | select CRYPTO_SHA1 |
051dbb91 DK |
624 | select MPILIB |
625 | help | |
626 | Digital signature verification. Currently only RSA is supported. | |
627 | Implementation is done using GnuPG MPI library | |
628 | ||
4f75da36 | 629 | config DIMLIB |
424adc32 | 630 | bool |
4f75da36 TG |
631 | help |
632 | Dynamic Interrupt Moderation library. | |
991ad2b2 | 633 | Implements an algorithm for dynamically changing CQ moderation values |
4f75da36 TG |
634 | according to run time performance. |
635 | ||
ab253839 DD |
636 | # |
637 | # libfdt files, only selected if needed. | |
638 | # | |
639 | config LIBFDT | |
640 | bool | |
641 | ||
a77ad6ea DH |
642 | config OID_REGISTRY |
643 | tristate | |
644 | help | |
645 | Enable fast lookup object identifier registry. | |
646 | ||
0635eb8a | 647 | config UCS2_STRING |
68d4b3df | 648 | tristate |
0635eb8a | 649 | |
00b26474 VF |
650 | # |
651 | # generic vdso | |
652 | # | |
653 | source "lib/vdso/Kconfig" | |
654 | ||
ee89bd6b GU |
655 | source "lib/fonts/Kconfig" |
656 | ||
f8bcbe62 RJ |
657 | config SG_SPLIT |
658 | def_bool n | |
659 | help | |
7f7e92f7 GU |
660 | Provides a helper to split scatterlists into chunks, each chunk being |
661 | a scatterlist. This should be selected by a driver or an API which | |
662 | whishes to split a scatterlist amongst multiple DMA channels. | |
f8bcbe62 | 663 | |
9b1d6c89 ML |
664 | config SG_POOL |
665 | def_bool n | |
666 | help | |
667 | Provides a helper to allocate chained scatterlists. This should be | |
668 | selected by a driver or an API which whishes to allocate chained | |
669 | scatterlist. | |
670 | ||
308c09f1 LA |
671 | # |
672 | # sg chaining option | |
673 | # | |
674 | ||
7c703e54 | 675 | config ARCH_NO_SG_CHAIN |
308c09f1 LA |
676 | def_bool n |
677 | ||
61031952 RZ |
678 | config ARCH_HAS_PMEM_API |
679 | bool | |
680 | ||
33dd7075 DW |
681 | config MEMREGION |
682 | bool | |
683 | ||
1156b441 DB |
684 | config ARCH_HAS_CPU_CACHE_INVALIDATE_MEMREGION |
685 | bool | |
686 | ||
9ffc1d19 DW |
687 | config ARCH_HAS_MEMREMAP_COMPAT_ALIGN |
688 | bool | |
689 | ||
bd79f947 CH |
690 | # use memcpy to implement user copies for nommu architectures |
691 | config UACCESS_MEMCPY | |
692 | bool | |
693 | ||
0aed55af DW |
694 | config ARCH_HAS_UACCESS_FLUSHCACHE |
695 | bool | |
696 | ||
ec6347bb DW |
697 | # arch has a concept of a recoverable synchronous exception due to a |
698 | # memory-read error like x86 machine-check or ARM data-abort, and | |
699 | # implements copy_mc_to_{user,kernel} to abort and report | |
700 | # 'bytes-transferred' if that exception fires when accessing the source | |
701 | # buffer. | |
702 | config ARCH_HAS_COPY_MC | |
522239b4 DW |
703 | bool |
704 | ||
214d8ca6 TG |
705 | # Temporary. Goes away when all archs are cleaned up |
706 | config ARCH_STACKWALK | |
707 | bool | |
708 | ||
cd11016e AP |
709 | config STACKDEPOT |
710 | bool | |
711 | select STACKTRACE | |
712 | ||
2dba5eb1 VB |
713 | config STACKDEPOT_ALWAYS_INIT |
714 | bool | |
715 | select STACKDEPOT | |
716 | ||
4e66934e ED |
717 | config REF_TRACKER |
718 | bool | |
719 | depends on STACKTRACE_SUPPORT | |
720 | select STACKDEPOT | |
721 | ||
88459642 OS |
722 | config SBITMAP |
723 | bool | |
724 | ||
44091d29 | 725 | config PARMAN |
9d25af69 | 726 | tristate "parman" if COMPILE_TEST |
44091d29 | 727 | |
3dfdecc6 RD |
728 | config OBJAGG |
729 | tristate "objagg" if COMPILE_TEST | |
730 | ||
2de4ff7b | 731 | endmenu |
b35cd988 | 732 | |
80b0ca98 CH |
733 | config GENERIC_IOREMAP |
734 | bool | |
735 | ||
e3d59805 | 736 | config GENERIC_LIB_ASHLDI3 |
b35cd988 PD |
737 | bool |
738 | ||
e3d59805 | 739 | config GENERIC_LIB_ASHRDI3 |
b35cd988 PD |
740 | bool |
741 | ||
e3d59805 | 742 | config GENERIC_LIB_LSHRDI3 |
b35cd988 PD |
743 | bool |
744 | ||
e3d59805 | 745 | config GENERIC_LIB_MULDI3 |
b35cd988 PD |
746 | bool |
747 | ||
e3d59805 | 748 | config GENERIC_LIB_CMPDI2 |
b35cd988 PD |
749 | bool |
750 | ||
e3d59805 | 751 | config GENERIC_LIB_UCMPDI2 |
b35cd988 | 752 | bool |
b8265621 | 753 | |
527701ed PD |
754 | config GENERIC_LIB_DEVMEM_IS_ALLOWED |
755 | bool | |
756 | ||
b8265621 JK |
757 | config PLDMFW |
758 | bool | |
759 | default n | |
b0706762 JB |
760 | |
761 | config ASN1_ENCODER | |
762 | tristate | |
cd705ea8 MW |
763 | |
764 | config POLYNOMIAL | |
765 | tristate |