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