1 # SPDX-License-Identifier: GPL-2.0-only <<
2 # 1 #
3 # Library configuration 2 # Library configuration
4 # 3 #
5 4
6 config BINARY_PRINTF 5 config BINARY_PRINTF
7 def_bool n 6 def_bool n
8 7
9 menu "Library routines" 8 menu "Library routines"
10 9
11 config RAID6_PQ 10 config RAID6_PQ
12 tristate 11 tristate
13 12
14 config RAID6_PQ_BENCHMARK <<
15 bool "Automatically choose fastest RAI <<
16 depends on RAID6_PQ <<
17 default y <<
18 help <<
19 Benchmark all available RAID6 PQ fun <<
20 fastest one. <<
21 <<
22 config LINEAR_RANGES <<
23 tristate <<
24 <<
25 config PACKING <<
26 bool "Generic bitfield packing and unp <<
27 select BITREVERSE <<
28 default n <<
29 help <<
30 This option provides the packing() h <<
31 converting bitfields between a CPU-u <<
32 memory representation that can have <<
33 - Is little endian (bytes are reve <<
34 - The least-significant 32-bit wor <<
35 group) <<
36 - The most significant bit of a by <<
37 register description is numerica <<
38 Drivers may use these helpers to mat <<
39 in the data sheets of the peripheral <<
40 <<
41 When in doubt, say N. <<
42 <<
43 config BITREVERSE 13 config BITREVERSE
44 tristate 14 tristate
45 15
46 config HAVE_ARCH_BITREVERSE 16 config HAVE_ARCH_BITREVERSE
47 bool 17 bool
48 default n 18 default n
>> 19 depends on BITREVERSE
49 help 20 help
50 This option enables the use of hardw 21 This option enables the use of hardware bit-reversal instructions on
51 architectures which support such ope 22 architectures which support such operations.
52 23
53 config ARCH_HAS_STRNCPY_FROM_USER !! 24 config RATIONAL
54 bool <<
55 <<
56 config ARCH_HAS_STRNLEN_USER <<
57 bool 25 bool
58 26
59 config GENERIC_STRNCPY_FROM_USER 27 config GENERIC_STRNCPY_FROM_USER
60 def_bool !ARCH_HAS_STRNCPY_FROM_USER !! 28 bool
61 29
62 config GENERIC_STRNLEN_USER 30 config GENERIC_STRNLEN_USER
63 def_bool !ARCH_HAS_STRNLEN_USER !! 31 bool
64 32
65 config GENERIC_NET_UTILS 33 config GENERIC_NET_UTILS
66 bool 34 bool
67 35
68 source "lib/math/Kconfig" !! 36 config GENERIC_FIND_FIRST_BIT
>> 37 bool
69 38
70 config NO_GENERIC_PCI_IOPORT_MAP 39 config NO_GENERIC_PCI_IOPORT_MAP
71 bool 40 bool
72 41
>> 42 config GENERIC_PCI_IOMAP
>> 43 bool
>> 44
73 config GENERIC_IOMAP 45 config GENERIC_IOMAP
74 bool 46 bool
75 select GENERIC_PCI_IOMAP 47 select GENERIC_PCI_IOMAP
76 48
>> 49 config GENERIC_IO
>> 50 bool
>> 51 default n
>> 52
77 config STMP_DEVICE 53 config STMP_DEVICE
78 bool 54 bool
79 55
80 config ARCH_USE_CMPXCHG_LOCKREF 56 config ARCH_USE_CMPXCHG_LOCKREF
81 bool 57 bool
82 58
83 config ARCH_HAS_FAST_MULTIPLIER 59 config ARCH_HAS_FAST_MULTIPLIER
84 bool 60 bool
85 61
86 config ARCH_USE_SYM_ANNOTATIONS <<
87 bool <<
88 <<
89 config INDIRECT_PIO <<
90 bool "Access I/O in non-MMIO mode" <<
91 depends on ARM64 <<
92 depends on HAS_IOPORT <<
93 help <<
94 On some platforms where no separate <<
95 hosts which can not be accessed in M <<
96 mechanism, the host-local I/O resour <<
97 logic PIO space shared with MMIO hos <<
98 system can access the I/O devices wi <<
99 I/O accessors. <<
100 <<
101 This way has relatively little I/O p <<
102 sure your devices really need this c <<
103 <<
104 When in doubt, say N. <<
105 <<
106 config INDIRECT_IOMEM <<
107 bool <<
108 help <<
109 This is selected by other options/ar <<
110 emulated iomem accessors. <<
111 <<
112 config INDIRECT_IOMEM_FALLBACK <<
113 bool <<
114 depends on INDIRECT_IOMEM <<
115 help <<
116 If INDIRECT_IOMEM is selected, this <<
117 mmio accesses when the IO memory add <<
118 emulated region. <<
119 <<
120 config TRACE_MMIO_ACCESS <<
121 bool "Register read/write tracing" <<
122 depends on TRACING && ARCH_HAVE_TRACE_ <<
123 help <<
124 Create tracepoints for MMIO read/wri <<
125 can be used for logging all MMIO rea <<
126 <<
127 source "lib/crypto/Kconfig" <<
128 <<
129 config CRC_CCITT 62 config CRC_CCITT
130 tristate "CRC-CCITT functions" 63 tristate "CRC-CCITT functions"
131 help 64 help
132 This option is provided for the case 65 This option is provided for the case where no in-kernel-tree
133 modules require CRC-CCITT functions, 66 modules require CRC-CCITT functions, but a module built outside
134 the kernel tree does. Such modules t 67 the kernel tree does. Such modules that use library CRC-CCITT
135 functions require M here. 68 functions require M here.
136 69
137 config CRC16 70 config CRC16
138 tristate "CRC16 functions" 71 tristate "CRC16 functions"
139 help 72 help
140 This option is provided for the case 73 This option is provided for the case where no in-kernel-tree
141 modules require CRC16 functions, but 74 modules require CRC16 functions, but a module built outside
142 the kernel tree does. Such modules t 75 the kernel tree does. Such modules that use library CRC16
143 functions require M here. 76 functions require M here.
144 77
145 config CRC_T10DIF 78 config CRC_T10DIF
146 tristate "CRC calculation for the T10 79 tristate "CRC calculation for the T10 Data Integrity Field"
147 select CRYPTO 80 select CRYPTO
148 select CRYPTO_CRCT10DIF 81 select CRYPTO_CRCT10DIF
149 help 82 help
150 This option is only needed if a modu 83 This option is only needed if a module that's not in the
151 kernel tree needs to calculate CRC c 84 kernel tree needs to calculate CRC checks for use with the
152 SCSI data integrity subsystem. 85 SCSI data integrity subsystem.
153 86
154 config CRC64_ROCKSOFT <<
155 tristate "CRC calculation for the Rock <<
156 select CRC64 <<
157 select CRYPTO <<
158 select CRYPTO_CRC64_ROCKSOFT <<
159 help <<
160 This option provides a CRC64 API to <<
161 This is used with the block layer's <<
162 <<
163 config CRC_ITU_T 87 config CRC_ITU_T
164 tristate "CRC ITU-T V.41 functions" 88 tristate "CRC ITU-T V.41 functions"
165 help 89 help
166 This option is provided for the case 90 This option is provided for the case where no in-kernel-tree
167 modules require CRC ITU-T V.41 funct 91 modules require CRC ITU-T V.41 functions, but a module built outside
168 the kernel tree does. Such modules t 92 the kernel tree does. Such modules that use library CRC ITU-T V.41
169 functions require M here. 93 functions require M here.
170 94
171 config CRC32 95 config CRC32
172 tristate "CRC32/CRC32c functions" 96 tristate "CRC32/CRC32c functions"
173 default y 97 default y
174 select BITREVERSE 98 select BITREVERSE
175 help 99 help
176 This option is provided for the case 100 This option is provided for the case where no in-kernel-tree
177 modules require CRC32/CRC32c functio 101 modules require CRC32/CRC32c functions, but a module built outside
178 the kernel tree does. Such modules t 102 the kernel tree does. Such modules that use library CRC32/CRC32c
179 functions require M here. 103 functions require M here.
180 104
181 config CRC32_SELFTEST 105 config CRC32_SELFTEST
182 tristate "CRC32 perform self test on i 106 tristate "CRC32 perform self test on init"
183 depends on CRC32 107 depends on CRC32
184 help 108 help
185 This option enables the CRC32 librar 109 This option enables the CRC32 library functions to perform a
186 self test on initialization. The sel 110 self test on initialization. The self test computes crc32_le
187 and crc32_be over byte strings with 111 and crc32_be over byte strings with random alignment and length
188 and computes the total elapsed time 112 and computes the total elapsed time and number of bytes processed.
189 113
190 choice 114 choice
191 prompt "CRC32 implementation" 115 prompt "CRC32 implementation"
192 depends on CRC32 116 depends on CRC32
193 default CRC32_SLICEBY8 117 default CRC32_SLICEBY8
194 help 118 help
195 This option allows a kernel builder 119 This option allows a kernel builder to override the default choice
196 of CRC32 algorithm. Choose the defa 120 of CRC32 algorithm. Choose the default ("slice by 8") unless you
197 know that you need one of the others 121 know that you need one of the others.
198 122
199 config CRC32_SLICEBY8 123 config CRC32_SLICEBY8
200 bool "Slice by 8 bytes" 124 bool "Slice by 8 bytes"
201 help 125 help
202 Calculate checksum 8 bytes at a time 126 Calculate checksum 8 bytes at a time with a clever slicing algorithm.
203 This is the fastest algorithm, but c 127 This is the fastest algorithm, but comes with a 8KiB lookup table.
204 Most modern processors have enough c 128 Most modern processors have enough cache to hold this table without
205 thrashing the cache. 129 thrashing the cache.
206 130
207 This is the default implementation c 131 This is the default implementation choice. Choose this one unless
208 you have a good reason not to. 132 you have a good reason not to.
209 133
210 config CRC32_SLICEBY4 134 config CRC32_SLICEBY4
211 bool "Slice by 4 bytes" 135 bool "Slice by 4 bytes"
212 help 136 help
213 Calculate checksum 4 bytes at a time 137 Calculate checksum 4 bytes at a time with a clever slicing algorithm.
214 This is a bit slower than slice by 8 138 This is a bit slower than slice by 8, but has a smaller 4KiB lookup
215 table. 139 table.
216 140
217 Only choose this option if you know 141 Only choose this option if you know what you are doing.
218 142
219 config CRC32_SARWATE 143 config CRC32_SARWATE
220 bool "Sarwate's Algorithm (one byte at 144 bool "Sarwate's Algorithm (one byte at a time)"
221 help 145 help
222 Calculate checksum a byte at a time 146 Calculate checksum a byte at a time using Sarwate's algorithm. This
223 is not particularly fast, but has a 147 is not particularly fast, but has a small 256 byte lookup table.
224 148
225 Only choose this option if you know 149 Only choose this option if you know what you are doing.
226 150
227 config CRC32_BIT 151 config CRC32_BIT
228 bool "Classic Algorithm (one bit at a 152 bool "Classic Algorithm (one bit at a time)"
229 help 153 help
230 Calculate checksum one bit at a time 154 Calculate checksum one bit at a time. This is VERY slow, but has
231 no lookup table. This is provided a 155 no lookup table. This is provided as a debugging option.
232 156
233 Only choose this option if you are d 157 Only choose this option if you are debugging crc32.
234 158
235 endchoice 159 endchoice
236 160
237 config CRC64 <<
238 tristate "CRC64 functions" <<
239 help <<
240 This option is provided for the case <<
241 modules require CRC64 functions, but <<
242 the kernel tree does. Such modules t <<
243 functions require M here. <<
244 <<
245 config CRC4 161 config CRC4
246 tristate "CRC4 functions" 162 tristate "CRC4 functions"
247 help 163 help
248 This option is provided for the case 164 This option is provided for the case where no in-kernel-tree
249 modules require CRC4 functions, but 165 modules require CRC4 functions, but a module built outside
250 the kernel tree does. Such modules t 166 the kernel tree does. Such modules that use library CRC4
251 functions require M here. 167 functions require M here.
252 168
253 config CRC7 169 config CRC7
254 tristate "CRC7 functions" 170 tristate "CRC7 functions"
255 help 171 help
256 This option is provided for the case 172 This option is provided for the case where no in-kernel-tree
257 modules require CRC7 functions, but 173 modules require CRC7 functions, but a module built outside
258 the kernel tree does. Such modules t 174 the kernel tree does. Such modules that use library CRC7
259 functions require M here. 175 functions require M here.
260 176
261 config LIBCRC32C 177 config LIBCRC32C
262 tristate "CRC32c (Castagnoli, et al) C 178 tristate "CRC32c (Castagnoli, et al) Cyclic Redundancy-Check"
263 select CRYPTO 179 select CRYPTO
264 select CRYPTO_CRC32C 180 select CRYPTO_CRC32C
265 help 181 help
266 This option is provided for the case 182 This option is provided for the case where no in-kernel-tree
267 modules require CRC32c functions, bu 183 modules require CRC32c functions, but a module built outside the
268 kernel tree does. Such modules that 184 kernel tree does. Such modules that use library CRC32c functions
269 require M here. See Castagnoli93. 185 require M here. See Castagnoli93.
270 Module will be libcrc32c. 186 Module will be libcrc32c.
271 187
272 config CRC8 188 config CRC8
273 tristate "CRC8 function" 189 tristate "CRC8 function"
274 help 190 help
275 This option provides CRC8 function. 191 This option provides CRC8 function. Drivers may select this
276 when they need to do cyclic redundan 192 when they need to do cyclic redundancy check according CRC8
277 algorithm. Module will be called crc 193 algorithm. Module will be called crc8.
278 194
279 config XXHASH <<
280 tristate <<
281 <<
282 config AUDIT_GENERIC 195 config AUDIT_GENERIC
283 bool 196 bool
284 depends on AUDIT && !AUDIT_ARCH 197 depends on AUDIT && !AUDIT_ARCH
285 default y 198 default y
286 199
287 config AUDIT_ARCH_COMPAT_GENERIC 200 config AUDIT_ARCH_COMPAT_GENERIC
288 bool 201 bool
289 default n 202 default n
290 203
291 config AUDIT_COMPAT_GENERIC 204 config AUDIT_COMPAT_GENERIC
292 bool 205 bool
293 depends on AUDIT_GENERIC && AUDIT_ARCH 206 depends on AUDIT_GENERIC && AUDIT_ARCH_COMPAT_GENERIC && COMPAT
294 default y 207 default y
295 208
296 config RANDOM32_SELFTEST 209 config RANDOM32_SELFTEST
297 bool "PRNG perform self test on init" 210 bool "PRNG perform self test on init"
>> 211 default n
298 help 212 help
299 This option enables the 32 bit PRNG 213 This option enables the 32 bit PRNG library functions to perform a
300 self test on initialization. 214 self test on initialization.
301 215
302 # 216 #
303 # compression support is select'ed if needed 217 # compression support is select'ed if needed
304 # 218 #
305 config 842_COMPRESS 219 config 842_COMPRESS
306 select CRC32 220 select CRC32
307 tristate 221 tristate
308 222
309 config 842_DECOMPRESS 223 config 842_DECOMPRESS
310 select CRC32 224 select CRC32
311 tristate 225 tristate
312 226
313 config ZLIB_INFLATE 227 config ZLIB_INFLATE
314 tristate 228 tristate
315 229
316 config ZLIB_DEFLATE 230 config ZLIB_DEFLATE
317 tristate 231 tristate
318 select BITREVERSE 232 select BITREVERSE
319 233
320 config ZLIB_DFLTCC <<
321 def_bool y <<
322 depends on S390 <<
323 prompt "Enable s390x DEFLATE CONVERSIO <<
324 help <<
325 Enable s390x hardware support for zli <<
326 <<
327 config LZO_COMPRESS 234 config LZO_COMPRESS
328 tristate 235 tristate
329 236
330 config LZO_DECOMPRESS 237 config LZO_DECOMPRESS
331 tristate 238 tristate
332 239
333 config LZ4_COMPRESS 240 config LZ4_COMPRESS
334 tristate 241 tristate
335 242
336 config LZ4HC_COMPRESS 243 config LZ4HC_COMPRESS
337 tristate 244 tristate
338 245
339 config LZ4_DECOMPRESS 246 config LZ4_DECOMPRESS
340 tristate 247 tristate
341 248
342 config ZSTD_COMMON <<
343 select XXHASH <<
344 tristate <<
345 <<
346 config ZSTD_COMPRESS <<
347 select ZSTD_COMMON <<
348 tristate <<
349 <<
350 config ZSTD_DECOMPRESS <<
351 select ZSTD_COMMON <<
352 tristate <<
353 <<
354 source "lib/xz/Kconfig" 249 source "lib/xz/Kconfig"
355 250
356 # 251 #
357 # These all provide a common interface (hence 252 # These all provide a common interface (hence the apparent duplication with
358 # ZLIB_INFLATE; DECOMPRESS_GZIP is just a wrap 253 # ZLIB_INFLATE; DECOMPRESS_GZIP is just a wrapper.)
359 # 254 #
360 config DECOMPRESS_GZIP 255 config DECOMPRESS_GZIP
361 select ZLIB_INFLATE 256 select ZLIB_INFLATE
362 tristate 257 tristate
363 258
364 config DECOMPRESS_BZIP2 259 config DECOMPRESS_BZIP2
365 tristate 260 tristate
366 261
367 config DECOMPRESS_LZMA 262 config DECOMPRESS_LZMA
368 tristate 263 tristate
369 264
370 config DECOMPRESS_XZ 265 config DECOMPRESS_XZ
371 select XZ_DEC 266 select XZ_DEC
372 tristate 267 tristate
373 268
374 config DECOMPRESS_LZO 269 config DECOMPRESS_LZO
375 select LZO_DECOMPRESS 270 select LZO_DECOMPRESS
376 tristate 271 tristate
377 272
378 config DECOMPRESS_LZ4 273 config DECOMPRESS_LZ4
379 select LZ4_DECOMPRESS 274 select LZ4_DECOMPRESS
380 tristate 275 tristate
381 276
382 config DECOMPRESS_ZSTD <<
383 select ZSTD_DECOMPRESS <<
384 tristate <<
385 <<
386 # 277 #
387 # Generic allocator support is selected if nee 278 # Generic allocator support is selected if needed
388 # 279 #
389 config GENERIC_ALLOCATOR 280 config GENERIC_ALLOCATOR
390 bool 281 bool
391 282
392 # 283 #
393 # reed solomon support is select'ed if needed 284 # reed solomon support is select'ed if needed
394 # 285 #
395 config REED_SOLOMON 286 config REED_SOLOMON
396 tristate 287 tristate
397 288
398 config REED_SOLOMON_ENC8 289 config REED_SOLOMON_ENC8
399 bool 290 bool
400 291
401 config REED_SOLOMON_DEC8 292 config REED_SOLOMON_DEC8
402 bool 293 bool
403 294
404 config REED_SOLOMON_ENC16 295 config REED_SOLOMON_ENC16
405 bool 296 bool
406 297
407 config REED_SOLOMON_DEC16 298 config REED_SOLOMON_DEC16
408 bool 299 bool
409 300
410 # 301 #
411 # BCH support is selected if needed 302 # BCH support is selected if needed
412 # 303 #
413 config BCH 304 config BCH
414 tristate 305 tristate
415 select BITREVERSE <<
416 306
417 config BCH_CONST_PARAMS 307 config BCH_CONST_PARAMS
418 bool 308 bool
419 help 309 help
420 Drivers may select this option to fo 310 Drivers may select this option to force specific constant
421 values for parameters 'm' (Galois fi 311 values for parameters 'm' (Galois field order) and 't'
422 (error correction capability). Those 312 (error correction capability). Those specific values must
423 be set by declaring default values f 313 be set by declaring default values for symbols BCH_CONST_M
424 and BCH_CONST_T. 314 and BCH_CONST_T.
425 Doing so will enable extra compiler 315 Doing so will enable extra compiler optimizations,
426 improving encoding and decoding perf 316 improving encoding and decoding performance up to 2x for
427 usual (m,t) values (typically such t 317 usual (m,t) values (typically such that m*t < 200).
428 When this option is selected, the BC 318 When this option is selected, the BCH library supports
429 only a single (m,t) configuration. T 319 only a single (m,t) configuration. This is mainly useful
430 for NAND flash board drivers requiri 320 for NAND flash board drivers requiring known, fixed BCH
431 parameters. 321 parameters.
432 322
433 config BCH_CONST_M 323 config BCH_CONST_M
434 int 324 int
435 range 5 15 325 range 5 15
436 help 326 help
437 Constant value for Galois field orde 327 Constant value for Galois field order 'm'. If 'k' is the
438 number of data bits to protect, 'm' 328 number of data bits to protect, 'm' should be chosen such
439 that (k + m*t) <= 2**m - 1. 329 that (k + m*t) <= 2**m - 1.
440 Drivers should declare a default val 330 Drivers should declare a default value for this symbol if
441 they select option BCH_CONST_PARAMS. 331 they select option BCH_CONST_PARAMS.
442 332
443 config BCH_CONST_T 333 config BCH_CONST_T
444 int 334 int
445 help 335 help
446 Constant value for error correction 336 Constant value for error correction capability in bits 't'.
447 Drivers should declare a default val 337 Drivers should declare a default value for this symbol if
448 they select option BCH_CONST_PARAMS. 338 they select option BCH_CONST_PARAMS.
449 339
450 # 340 #
451 # Textsearch support is select'ed if needed 341 # Textsearch support is select'ed if needed
452 # 342 #
453 config TEXTSEARCH 343 config TEXTSEARCH
454 bool 344 bool
455 345
456 config TEXTSEARCH_KMP 346 config TEXTSEARCH_KMP
457 tristate 347 tristate
458 348
459 config TEXTSEARCH_BM 349 config TEXTSEARCH_BM
460 tristate 350 tristate
461 351
462 config TEXTSEARCH_FSM 352 config TEXTSEARCH_FSM
463 tristate 353 tristate
464 354
465 config BTREE 355 config BTREE
466 bool 356 bool
467 357
468 config INTERVAL_TREE 358 config INTERVAL_TREE
469 bool 359 bool
470 help 360 help
471 Simple, embeddable, interval-tree. C 361 Simple, embeddable, interval-tree. Can find the start of an
472 overlapping range in log(n) time and 362 overlapping range in log(n) time and then iterate over all
473 overlapping nodes. The algorithm is 363 overlapping nodes. The algorithm is implemented as an
474 augmented rbtree. 364 augmented rbtree.
475 365
476 See: 366 See:
477 367
478 Documentation/core-api/rbtree. !! 368 Documentation/rbtree.txt
479 369
480 for more information. 370 for more information.
481 371
482 config INTERVAL_TREE_SPAN_ITER !! 372 config RADIX_TREE_MULTIORDER
483 bool 373 bool
484 depends on INTERVAL_TREE <<
485 <<
486 config XARRAY_MULTI <<
487 bool <<
488 help <<
489 Support entries which occupy multipl <<
490 XArray. <<
491 374
492 config ASSOCIATIVE_ARRAY 375 config ASSOCIATIVE_ARRAY
493 bool 376 bool
494 help 377 help
495 Generic associative array. Can be s 378 Generic associative array. Can be searched and iterated over whilst
496 it is being modified. It is also re 379 it is being modified. It is also reasonably quick to search and
497 modify. The algorithms are non-recu 380 modify. The algorithms are non-recursive, and the trees are highly
498 capacious. 381 capacious.
499 382
500 See: 383 See:
501 384
502 Documentation/core-api/assoc_a !! 385 Documentation/assoc_array.txt
503 386
504 for more information. 387 for more information.
505 388
506 config CLOSURES <<
507 bool <<
508 <<
509 config HAS_IOMEM 389 config HAS_IOMEM
510 bool 390 bool
511 depends on !NO_IOMEM 391 depends on !NO_IOMEM
>> 392 select GENERIC_IO
512 default y 393 default y
513 394
514 config HAS_IOPORT <<
515 bool <<
516 <<
517 config HAS_IOPORT_MAP 395 config HAS_IOPORT_MAP
518 bool 396 bool
519 depends on HAS_IOMEM && !NO_IOPORT_MAP 397 depends on HAS_IOMEM && !NO_IOPORT_MAP
520 default y 398 default y
521 399
522 source "kernel/dma/Kconfig" !! 400 config HAS_DMA
>> 401 bool
>> 402 depends on !NO_DMA
>> 403 default y
523 404
524 config SGL_ALLOC !! 405 config DMA_NOOP_OPS
525 bool 406 bool
>> 407 depends on HAS_DMA && (!64BIT || ARCH_DMA_ADDR_T_64BIT)
526 default n 408 default n
527 409
528 config IOMMU_HELPER !! 410 config DMA_VIRT_OPS
529 bool 411 bool
>> 412 depends on HAS_DMA && (!64BIT || ARCH_DMA_ADDR_T_64BIT)
>> 413 default n
530 414
531 config CHECK_SIGNATURE 415 config CHECK_SIGNATURE
532 bool 416 bool
533 417
534 config CPUMASK_OFFSTACK 418 config CPUMASK_OFFSTACK
535 bool "Force CPU masks off stack" if DE 419 bool "Force CPU masks off stack" if DEBUG_PER_CPU_MAPS
536 help 420 help
537 Use dynamic allocation for cpumask_v 421 Use dynamic allocation for cpumask_var_t, instead of putting
538 them on the stack. This is a bit mo 422 them on the stack. This is a bit more expensive, but avoids
539 stack overflow. 423 stack overflow.
540 424
541 config FORCE_NR_CPUS <<
542 def_bool !SMP <<
543 <<
544 config CPU_RMAP 425 config CPU_RMAP
545 bool 426 bool
546 depends on SMP 427 depends on SMP
547 428
548 config DQL 429 config DQL
549 bool 430 bool
550 431
551 config GLOB 432 config GLOB
552 bool 433 bool
553 # This actually supports modular compila 434 # This actually supports modular compilation, but the module overhead
554 # is ridiculous for the amount of code i 435 # is ridiculous for the amount of code involved. Until an out-of-tree
555 # driver asks for it, we'll just link it 436 # driver asks for it, we'll just link it directly it into the kernel
556 # when required. Since we're ignoring o 437 # when required. Since we're ignoring out-of-tree users, there's also
557 # no need bother prompting for a manual 438 # no need bother prompting for a manual decision:
558 # prompt "glob_match() function" 439 # prompt "glob_match() function"
559 help 440 help
560 This option provides a glob_match fu 441 This option provides a glob_match function for performing
561 simple text pattern matching. It or 442 simple text pattern matching. It originated in the ATA code
562 to blacklist particular drive models 443 to blacklist particular drive models, but other device drivers
563 may need similar functionality. 444 may need similar functionality.
564 445
565 All drivers in the Linux kernel tree 446 All drivers in the Linux kernel tree that require this function
566 should automatically select this opt 447 should automatically select this option. Say N unless you
567 are compiling an out-of tree driver 448 are compiling an out-of tree driver which tells you that it
568 depends on this. 449 depends on this.
569 450
570 config GLOB_SELFTEST 451 config GLOB_SELFTEST
571 tristate "glob self-test on init" 452 tristate "glob self-test on init"
572 depends on GLOB 453 depends on GLOB
573 help 454 help
574 This option enables a simple self-te 455 This option enables a simple self-test of the glob_match
575 function on startup. It is primaril 456 function on startup. It is primarily useful for people
576 working on the code to ensure they h 457 working on the code to ensure they haven't introduced any
577 regressions. 458 regressions.
578 459
579 It only adds a little bit of code an 460 It only adds a little bit of code and slows kernel boot (or
580 module load) by a small amount, so y 461 module load) by a small amount, so you're welcome to play with
581 it, but you probably don't need it. 462 it, but you probably don't need it.
582 463
583 # 464 #
584 # Netlink attribute parsing support is select' 465 # Netlink attribute parsing support is select'ed if needed
585 # 466 #
586 config NLATTR 467 config NLATTR
587 bool 468 bool
588 469
589 # 470 #
590 # Generic 64-bit atomic support is selected if 471 # Generic 64-bit atomic support is selected if needed
591 # 472 #
592 config GENERIC_ATOMIC64 473 config GENERIC_ATOMIC64
593 bool 474 bool
594 475
595 config LRU_CACHE 476 config LRU_CACHE
596 tristate 477 tristate
597 478
598 config CLZ_TAB 479 config CLZ_TAB
599 bool 480 bool
600 481
>> 482 config CORDIC
>> 483 tristate "CORDIC algorithm"
>> 484 help
>> 485 This option provides an implementation of the CORDIC algorithm;
>> 486 calculations are in fixed point. Module will be called cordic.
>> 487
>> 488 config DDR
>> 489 bool "JEDEC DDR data"
>> 490 help
>> 491 Data from JEDEC specs for DDR SDRAM memories,
>> 492 particularly the AC timing parameters and addressing
>> 493 information. This data is useful for drivers handling
>> 494 DDR SDRAM controllers.
>> 495
601 config IRQ_POLL 496 config IRQ_POLL
602 bool "IRQ polling library" 497 bool "IRQ polling library"
603 help 498 help
604 Helper library to poll interrupt mit 499 Helper library to poll interrupt mitigation using polling.
605 500
606 config MPILIB 501 config MPILIB
607 tristate 502 tristate
608 select CLZ_TAB 503 select CLZ_TAB
609 help 504 help
610 Multiprecision maths library from Gn 505 Multiprecision maths library from GnuPG.
611 It is used to implement RSA digital 506 It is used to implement RSA digital signature verification,
612 which is used by IMA/EVM digital sig 507 which is used by IMA/EVM digital signature extension.
613 508
614 config SIGNATURE 509 config SIGNATURE
615 tristate 510 tristate
616 depends on KEYS 511 depends on KEYS
617 select CRYPTO 512 select CRYPTO
618 select CRYPTO_SHA1 513 select CRYPTO_SHA1
619 select MPILIB 514 select MPILIB
620 help 515 help
621 Digital signature verification. Curr 516 Digital signature verification. Currently only RSA is supported.
622 Implementation is done using GnuPG M 517 Implementation is done using GnuPG MPI library
623 518
624 config DIMLIB <<
625 tristate <<
626 depends on NET <<
627 help <<
628 Dynamic Interrupt Moderation library <<
629 Implements an algorithm for dynamica <<
630 according to run time performance. <<
631 <<
632 # 519 #
633 # libfdt files, only selected if needed. 520 # libfdt files, only selected if needed.
634 # 521 #
635 config LIBFDT 522 config LIBFDT
636 bool 523 bool
637 524
638 config OID_REGISTRY 525 config OID_REGISTRY
639 tristate 526 tristate
640 help 527 help
641 Enable fast lookup object identifier 528 Enable fast lookup object identifier registry.
642 529
643 config UCS2_STRING 530 config UCS2_STRING
644 tristate !! 531 tristate
645 <<
646 # <<
647 # generic vdso <<
648 # <<
649 source "lib/vdso/Kconfig" <<
650 532
651 source "lib/fonts/Kconfig" 533 source "lib/fonts/Kconfig"
652 534
653 config SG_SPLIT 535 config SG_SPLIT
654 def_bool n 536 def_bool n
655 help 537 help
656 Provides a helper to split scatterlis 538 Provides a helper to split scatterlists into chunks, each chunk being
657 a scatterlist. This should be selecte 539 a scatterlist. This should be selected by a driver or an API which
658 whishes to split a scatterlist amongs 540 whishes to split a scatterlist amongst multiple DMA channels.
659 541
660 config SG_POOL 542 config SG_POOL
661 def_bool n 543 def_bool n
662 help 544 help
663 Provides a helper to allocate chained 545 Provides a helper to allocate chained scatterlists. This should be
664 selected by a driver or an API which 546 selected by a driver or an API which whishes to allocate chained
665 scatterlist. 547 scatterlist.
666 548
667 # 549 #
668 # sg chaining option 550 # sg chaining option
669 # 551 #
670 552
671 config ARCH_NO_SG_CHAIN !! 553 config ARCH_HAS_SG_CHAIN
672 def_bool n 554 def_bool n
673 555
674 config ARCH_HAS_PMEM_API 556 config ARCH_HAS_PMEM_API
675 bool 557 bool
676 558
677 config MEMREGION <<
678 bool <<
679 <<
680 config ARCH_HAS_CPU_CACHE_INVALIDATE_MEMREGION <<
681 bool <<
682 <<
683 config ARCH_HAS_MEMREMAP_COMPAT_ALIGN <<
684 bool <<
685 <<
686 # use memcpy to implement user copies for nomm <<
687 config UACCESS_MEMCPY <<
688 bool <<
689 <<
690 config ARCH_HAS_UACCESS_FLUSHCACHE 559 config ARCH_HAS_UACCESS_FLUSHCACHE
691 bool 560 bool
692 561
693 # arch has a concept of a recoverable synchron !! 562 config ARCH_HAS_MMIO_FLUSH
694 # memory-read error like x86 machine-check or <<
695 # implements copy_mc_to_{user,kernel} to abort <<
696 # 'bytes-transferred' if that exception fires <<
697 # buffer. <<
698 config ARCH_HAS_COPY_MC <<
699 bool 563 bool
700 564
701 # Temporary. Goes away when all archs are clea <<
702 config ARCH_STACKWALK <<
703 bool <<
704 <<
705 config STACKDEPOT 565 config STACKDEPOT
706 bool 566 bool
707 select STACKTRACE 567 select STACKTRACE
708 help <<
709 Stack depot: stack trace storage tha <<
710 <<
711 config STACKDEPOT_ALWAYS_INIT <<
712 bool <<
713 select STACKDEPOT <<
714 help <<
715 Always initialize stack depot during <<
716 <<
717 config STACKDEPOT_MAX_FRAMES <<
718 int "Maximum number of frames in trace <<
719 range 1 256 <<
720 default 64 <<
721 depends on STACKDEPOT <<
722 <<
723 config REF_TRACKER <<
724 bool <<
725 depends on STACKTRACE_SUPPORT <<
726 select STACKDEPOT <<
727 568
728 config SBITMAP 569 config SBITMAP
729 bool 570 bool
730 571
731 config PARMAN 572 config PARMAN
732 tristate "parman" if COMPILE_TEST 573 tristate "parman" if COMPILE_TEST
733 574
734 config OBJAGG !! 575 config PRIME_NUMBERS
735 tristate "objagg" if COMPILE_TEST !! 576 tristate
736 <<
737 config LWQ_TEST <<
738 bool "Boot-time test for lwq queuing" <<
739 help <<
740 Run boot-time test of light-weight q <<
741 577
742 endmenu 578 endmenu
743 <<
744 config GENERIC_IOREMAP <<
745 bool <<
746 <<
747 config GENERIC_LIB_ASHLDI3 <<
748 bool <<
749 <<
750 config GENERIC_LIB_ASHRDI3 <<
751 bool <<
752 <<
753 config GENERIC_LIB_LSHRDI3 <<
754 bool <<
755 <<
756 config GENERIC_LIB_MULDI3 <<
757 bool <<
758 <<
759 config GENERIC_LIB_CMPDI2 <<
760 bool <<
761 <<
762 config GENERIC_LIB_UCMPDI2 <<
763 bool <<
764 <<
765 config GENERIC_LIB_DEVMEM_IS_ALLOWED <<
766 bool <<
767 <<
768 config PLDMFW <<
769 bool <<
770 default n <<
771 <<
772 config ASN1_ENCODER <<
773 tristate <<
774 <<
775 config POLYNOMIAL <<
776 tristate <<
777 <<
778 config FIRMWARE_TABLE <<
779 bool <<
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