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