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
77 config STMP_DEVICE 49 config STMP_DEVICE
78 bool 50 bool
79 51
80 config ARCH_USE_CMPXCHG_LOCKREF 52 config ARCH_USE_CMPXCHG_LOCKREF
81 bool 53 bool
82 54
83 config ARCH_HAS_FAST_MULTIPLIER 55 config ARCH_HAS_FAST_MULTIPLIER
84 bool 56 bool
85 57
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 58 config CRC_CCITT
130 tristate "CRC-CCITT functions" 59 tristate "CRC-CCITT functions"
131 help 60 help
132 This option is provided for the case 61 This option is provided for the case where no in-kernel-tree
133 modules require CRC-CCITT functions, 62 modules require CRC-CCITT functions, but a module built outside
134 the kernel tree does. Such modules t 63 the kernel tree does. Such modules that use library CRC-CCITT
135 functions require M here. 64 functions require M here.
136 65
137 config CRC16 66 config CRC16
138 tristate "CRC16 functions" 67 tristate "CRC16 functions"
139 help 68 help
140 This option is provided for the case 69 This option is provided for the case where no in-kernel-tree
141 modules require CRC16 functions, but 70 modules require CRC16 functions, but a module built outside
142 the kernel tree does. Such modules t 71 the kernel tree does. Such modules that use library CRC16
143 functions require M here. 72 functions require M here.
144 73
145 config CRC_T10DIF 74 config CRC_T10DIF
146 tristate "CRC calculation for the T10 75 tristate "CRC calculation for the T10 Data Integrity Field"
147 select CRYPTO 76 select CRYPTO
148 select CRYPTO_CRCT10DIF 77 select CRYPTO_CRCT10DIF
149 help 78 help
150 This option is only needed if a modu 79 This option is only needed if a module that's not in the
151 kernel tree needs to calculate CRC c 80 kernel tree needs to calculate CRC checks for use with the
152 SCSI data integrity subsystem. 81 SCSI data integrity subsystem.
153 82
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 83 config CRC_ITU_T
164 tristate "CRC ITU-T V.41 functions" 84 tristate "CRC ITU-T V.41 functions"
165 help 85 help
166 This option is provided for the case 86 This option is provided for the case where no in-kernel-tree
167 modules require CRC ITU-T V.41 funct 87 modules require CRC ITU-T V.41 functions, but a module built outside
168 the kernel tree does. Such modules t 88 the kernel tree does. Such modules that use library CRC ITU-T V.41
169 functions require M here. 89 functions require M here.
170 90
171 config CRC32 91 config CRC32
172 tristate "CRC32/CRC32c functions" 92 tristate "CRC32/CRC32c functions"
173 default y 93 default y
174 select BITREVERSE 94 select BITREVERSE
175 help 95 help
176 This option is provided for the case 96 This option is provided for the case where no in-kernel-tree
177 modules require CRC32/CRC32c functio 97 modules require CRC32/CRC32c functions, but a module built outside
178 the kernel tree does. Such modules t 98 the kernel tree does. Such modules that use library CRC32/CRC32c
179 functions require M here. 99 functions require M here.
180 100
181 config CRC32_SELFTEST 101 config CRC32_SELFTEST
182 tristate "CRC32 perform self test on i 102 tristate "CRC32 perform self test on init"
183 depends on CRC32 103 depends on CRC32
184 help 104 help
185 This option enables the CRC32 librar 105 This option enables the CRC32 library functions to perform a
186 self test on initialization. The sel 106 self test on initialization. The self test computes crc32_le
187 and crc32_be over byte strings with 107 and crc32_be over byte strings with random alignment and length
188 and computes the total elapsed time 108 and computes the total elapsed time and number of bytes processed.
189 109
190 choice 110 choice
191 prompt "CRC32 implementation" 111 prompt "CRC32 implementation"
192 depends on CRC32 112 depends on CRC32
193 default CRC32_SLICEBY8 113 default CRC32_SLICEBY8
194 help 114 help
195 This option allows a kernel builder 115 This option allows a kernel builder to override the default choice
196 of CRC32 algorithm. Choose the defa 116 of CRC32 algorithm. Choose the default ("slice by 8") unless you
197 know that you need one of the others 117 know that you need one of the others.
198 118
199 config CRC32_SLICEBY8 119 config CRC32_SLICEBY8
200 bool "Slice by 8 bytes" 120 bool "Slice by 8 bytes"
201 help 121 help
202 Calculate checksum 8 bytes at a time 122 Calculate checksum 8 bytes at a time with a clever slicing algorithm.
203 This is the fastest algorithm, but c 123 This is the fastest algorithm, but comes with a 8KiB lookup table.
204 Most modern processors have enough c 124 Most modern processors have enough cache to hold this table without
205 thrashing the cache. 125 thrashing the cache.
206 126
207 This is the default implementation c 127 This is the default implementation choice. Choose this one unless
208 you have a good reason not to. 128 you have a good reason not to.
209 129
210 config CRC32_SLICEBY4 130 config CRC32_SLICEBY4
211 bool "Slice by 4 bytes" 131 bool "Slice by 4 bytes"
212 help 132 help
213 Calculate checksum 4 bytes at a time 133 Calculate checksum 4 bytes at a time with a clever slicing algorithm.
214 This is a bit slower than slice by 8 134 This is a bit slower than slice by 8, but has a smaller 4KiB lookup
215 table. 135 table.
216 136
217 Only choose this option if you know 137 Only choose this option if you know what you are doing.
218 138
219 config CRC32_SARWATE 139 config CRC32_SARWATE
220 bool "Sarwate's Algorithm (one byte at 140 bool "Sarwate's Algorithm (one byte at a time)"
221 help 141 help
222 Calculate checksum a byte at a time 142 Calculate checksum a byte at a time using Sarwate's algorithm. This
223 is not particularly fast, but has a 143 is not particularly fast, but has a small 256 byte lookup table.
224 144
225 Only choose this option if you know 145 Only choose this option if you know what you are doing.
226 146
227 config CRC32_BIT 147 config CRC32_BIT
228 bool "Classic Algorithm (one bit at a 148 bool "Classic Algorithm (one bit at a time)"
229 help 149 help
230 Calculate checksum one bit at a time 150 Calculate checksum one bit at a time. This is VERY slow, but has
231 no lookup table. This is provided a 151 no lookup table. This is provided as a debugging option.
232 152
233 Only choose this option if you are d 153 Only choose this option if you are debugging crc32.
234 154
235 endchoice 155 endchoice
236 156
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 157 config CRC4
246 tristate "CRC4 functions" 158 tristate "CRC4 functions"
247 help 159 help
248 This option is provided for the case 160 This option is provided for the case where no in-kernel-tree
249 modules require CRC4 functions, but 161 modules require CRC4 functions, but a module built outside
250 the kernel tree does. Such modules t 162 the kernel tree does. Such modules that use library CRC4
251 functions require M here. 163 functions require M here.
252 164
253 config CRC7 165 config CRC7
254 tristate "CRC7 functions" 166 tristate "CRC7 functions"
255 help 167 help
256 This option is provided for the case 168 This option is provided for the case where no in-kernel-tree
257 modules require CRC7 functions, but 169 modules require CRC7 functions, but a module built outside
258 the kernel tree does. Such modules t 170 the kernel tree does. Such modules that use library CRC7
259 functions require M here. 171 functions require M here.
260 172
261 config LIBCRC32C 173 config LIBCRC32C
262 tristate "CRC32c (Castagnoli, et al) C 174 tristate "CRC32c (Castagnoli, et al) Cyclic Redundancy-Check"
263 select CRYPTO 175 select CRYPTO
264 select CRYPTO_CRC32C 176 select CRYPTO_CRC32C
265 help 177 help
266 This option is provided for the case 178 This option is provided for the case where no in-kernel-tree
267 modules require CRC32c functions, bu 179 modules require CRC32c functions, but a module built outside the
268 kernel tree does. Such modules that 180 kernel tree does. Such modules that use library CRC32c functions
269 require M here. See Castagnoli93. 181 require M here. See Castagnoli93.
270 Module will be libcrc32c. 182 Module will be libcrc32c.
271 183
272 config CRC8 184 config CRC8
273 tristate "CRC8 function" 185 tristate "CRC8 function"
274 help 186 help
275 This option provides CRC8 function. 187 This option provides CRC8 function. Drivers may select this
276 when they need to do cyclic redundan 188 when they need to do cyclic redundancy check according CRC8
277 algorithm. Module will be called crc 189 algorithm. Module will be called crc8.
278 190
279 config XXHASH 191 config XXHASH
280 tristate 192 tristate
281 193
282 config AUDIT_GENERIC 194 config AUDIT_GENERIC
283 bool 195 bool
284 depends on AUDIT && !AUDIT_ARCH 196 depends on AUDIT && !AUDIT_ARCH
285 default y 197 default y
286 198
287 config AUDIT_ARCH_COMPAT_GENERIC 199 config AUDIT_ARCH_COMPAT_GENERIC
288 bool 200 bool
289 default n 201 default n
290 202
291 config AUDIT_COMPAT_GENERIC 203 config AUDIT_COMPAT_GENERIC
292 bool 204 bool
293 depends on AUDIT_GENERIC && AUDIT_ARCH 205 depends on AUDIT_GENERIC && AUDIT_ARCH_COMPAT_GENERIC && COMPAT
294 default y 206 default y
295 207
296 config RANDOM32_SELFTEST 208 config RANDOM32_SELFTEST
297 bool "PRNG perform self test on init" 209 bool "PRNG perform self test on init"
>> 210 default n
298 help 211 help
299 This option enables the 32 bit PRNG 212 This option enables the 32 bit PRNG library functions to perform a
300 self test on initialization. 213 self test on initialization.
301 214
302 # 215 #
303 # compression support is select'ed if needed 216 # compression support is select'ed if needed
304 # 217 #
305 config 842_COMPRESS 218 config 842_COMPRESS
306 select CRC32 219 select CRC32
307 tristate 220 tristate
308 221
309 config 842_DECOMPRESS 222 config 842_DECOMPRESS
310 select CRC32 223 select CRC32
311 tristate 224 tristate
312 225
313 config ZLIB_INFLATE 226 config ZLIB_INFLATE
314 tristate 227 tristate
315 228
316 config ZLIB_DEFLATE 229 config ZLIB_DEFLATE
317 tristate 230 tristate
318 select BITREVERSE 231 select BITREVERSE
319 232
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 233 config LZO_COMPRESS
328 tristate 234 tristate
329 235
330 config LZO_DECOMPRESS 236 config LZO_DECOMPRESS
331 tristate 237 tristate
332 238
333 config LZ4_COMPRESS 239 config LZ4_COMPRESS
334 tristate 240 tristate
335 241
336 config LZ4HC_COMPRESS 242 config LZ4HC_COMPRESS
337 tristate 243 tristate
338 244
339 config LZ4_DECOMPRESS 245 config LZ4_DECOMPRESS
340 tristate 246 tristate
341 247
342 config ZSTD_COMMON <<
343 select XXHASH <<
344 tristate <<
345 <<
346 config ZSTD_COMPRESS 248 config ZSTD_COMPRESS
347 select ZSTD_COMMON !! 249 select XXHASH
348 tristate 250 tristate
349 251
350 config ZSTD_DECOMPRESS 252 config ZSTD_DECOMPRESS
351 select ZSTD_COMMON !! 253 select XXHASH
352 tristate 254 tristate
353 255
354 source "lib/xz/Kconfig" 256 source "lib/xz/Kconfig"
355 257
356 # 258 #
357 # These all provide a common interface (hence 259 # These all provide a common interface (hence the apparent duplication with
358 # ZLIB_INFLATE; DECOMPRESS_GZIP is just a wrap 260 # ZLIB_INFLATE; DECOMPRESS_GZIP is just a wrapper.)
359 # 261 #
360 config DECOMPRESS_GZIP 262 config DECOMPRESS_GZIP
361 select ZLIB_INFLATE 263 select ZLIB_INFLATE
362 tristate 264 tristate
363 265
364 config DECOMPRESS_BZIP2 266 config DECOMPRESS_BZIP2
365 tristate 267 tristate
366 268
367 config DECOMPRESS_LZMA 269 config DECOMPRESS_LZMA
368 tristate 270 tristate
369 271
370 config DECOMPRESS_XZ 272 config DECOMPRESS_XZ
371 select XZ_DEC 273 select XZ_DEC
372 tristate 274 tristate
373 275
374 config DECOMPRESS_LZO 276 config DECOMPRESS_LZO
375 select LZO_DECOMPRESS 277 select LZO_DECOMPRESS
376 tristate 278 tristate
377 279
378 config DECOMPRESS_LZ4 280 config DECOMPRESS_LZ4
379 select LZ4_DECOMPRESS 281 select LZ4_DECOMPRESS
380 tristate 282 tristate
381 283
382 config DECOMPRESS_ZSTD <<
383 select ZSTD_DECOMPRESS <<
384 tristate <<
385 <<
386 # 284 #
387 # Generic allocator support is selected if nee 285 # Generic allocator support is selected if needed
388 # 286 #
389 config GENERIC_ALLOCATOR 287 config GENERIC_ALLOCATOR
390 bool 288 bool
391 289
392 # 290 #
393 # reed solomon support is select'ed if needed 291 # reed solomon support is select'ed if needed
394 # 292 #
395 config REED_SOLOMON 293 config REED_SOLOMON
396 tristate 294 tristate
397 295
398 config REED_SOLOMON_ENC8 296 config REED_SOLOMON_ENC8
399 bool 297 bool
400 298
401 config REED_SOLOMON_DEC8 299 config REED_SOLOMON_DEC8
402 bool 300 bool
403 301
404 config REED_SOLOMON_ENC16 302 config REED_SOLOMON_ENC16
405 bool 303 bool
406 304
407 config REED_SOLOMON_DEC16 305 config REED_SOLOMON_DEC16
408 bool 306 bool
409 307
410 # 308 #
411 # BCH support is selected if needed 309 # BCH support is selected if needed
412 # 310 #
413 config BCH 311 config BCH
414 tristate 312 tristate
415 select BITREVERSE <<
416 313
417 config BCH_CONST_PARAMS 314 config BCH_CONST_PARAMS
418 bool 315 bool
419 help 316 help
420 Drivers may select this option to fo 317 Drivers may select this option to force specific constant
421 values for parameters 'm' (Galois fi 318 values for parameters 'm' (Galois field order) and 't'
422 (error correction capability). Those 319 (error correction capability). Those specific values must
423 be set by declaring default values f 320 be set by declaring default values for symbols BCH_CONST_M
424 and BCH_CONST_T. 321 and BCH_CONST_T.
425 Doing so will enable extra compiler 322 Doing so will enable extra compiler optimizations,
426 improving encoding and decoding perf 323 improving encoding and decoding performance up to 2x for
427 usual (m,t) values (typically such t 324 usual (m,t) values (typically such that m*t < 200).
428 When this option is selected, the BC 325 When this option is selected, the BCH library supports
429 only a single (m,t) configuration. T 326 only a single (m,t) configuration. This is mainly useful
430 for NAND flash board drivers requiri 327 for NAND flash board drivers requiring known, fixed BCH
431 parameters. 328 parameters.
432 329
433 config BCH_CONST_M 330 config BCH_CONST_M
434 int 331 int
435 range 5 15 332 range 5 15
436 help 333 help
437 Constant value for Galois field orde 334 Constant value for Galois field order 'm'. If 'k' is the
438 number of data bits to protect, 'm' 335 number of data bits to protect, 'm' should be chosen such
439 that (k + m*t) <= 2**m - 1. 336 that (k + m*t) <= 2**m - 1.
440 Drivers should declare a default val 337 Drivers should declare a default value for this symbol if
441 they select option BCH_CONST_PARAMS. 338 they select option BCH_CONST_PARAMS.
442 339
443 config BCH_CONST_T 340 config BCH_CONST_T
444 int 341 int
445 help 342 help
446 Constant value for error correction 343 Constant value for error correction capability in bits 't'.
447 Drivers should declare a default val 344 Drivers should declare a default value for this symbol if
448 they select option BCH_CONST_PARAMS. 345 they select option BCH_CONST_PARAMS.
449 346
450 # 347 #
451 # Textsearch support is select'ed if needed 348 # Textsearch support is select'ed if needed
452 # 349 #
453 config TEXTSEARCH 350 config TEXTSEARCH
454 bool 351 bool
455 352
456 config TEXTSEARCH_KMP 353 config TEXTSEARCH_KMP
457 tristate 354 tristate
458 355
459 config TEXTSEARCH_BM 356 config TEXTSEARCH_BM
460 tristate 357 tristate
461 358
462 config TEXTSEARCH_FSM 359 config TEXTSEARCH_FSM
463 tristate 360 tristate
464 361
465 config BTREE 362 config BTREE
466 bool 363 bool
467 364
468 config INTERVAL_TREE 365 config INTERVAL_TREE
469 bool 366 bool
470 help 367 help
471 Simple, embeddable, interval-tree. C 368 Simple, embeddable, interval-tree. Can find the start of an
472 overlapping range in log(n) time and 369 overlapping range in log(n) time and then iterate over all
473 overlapping nodes. The algorithm is 370 overlapping nodes. The algorithm is implemented as an
474 augmented rbtree. 371 augmented rbtree.
475 372
476 See: 373 See:
477 374
478 Documentation/core-api/rbtree. !! 375 Documentation/rbtree.txt
479 376
480 for more information. 377 for more information.
481 378
482 config INTERVAL_TREE_SPAN_ITER !! 379 config RADIX_TREE_MULTIORDER
483 bool <<
484 depends on INTERVAL_TREE <<
485 <<
486 config XARRAY_MULTI <<
487 bool 380 bool
488 help <<
489 Support entries which occupy multipl <<
490 XArray. <<
491 381
492 config ASSOCIATIVE_ARRAY 382 config ASSOCIATIVE_ARRAY
493 bool 383 bool
494 help 384 help
495 Generic associative array. Can be s 385 Generic associative array. Can be searched and iterated over whilst
496 it is being modified. It is also re 386 it is being modified. It is also reasonably quick to search and
497 modify. The algorithms are non-recu 387 modify. The algorithms are non-recursive, and the trees are highly
498 capacious. 388 capacious.
499 389
500 See: 390 See:
501 391
502 Documentation/core-api/assoc_a !! 392 Documentation/assoc_array.txt
503 393
504 for more information. 394 for more information.
505 395
506 config CLOSURES <<
507 bool <<
508 <<
509 config HAS_IOMEM 396 config HAS_IOMEM
510 bool 397 bool
511 depends on !NO_IOMEM 398 depends on !NO_IOMEM
>> 399 select GENERIC_IO
512 default y 400 default y
513 401
514 config HAS_IOPORT <<
515 bool <<
516 <<
517 config HAS_IOPORT_MAP 402 config HAS_IOPORT_MAP
518 bool 403 bool
519 depends on HAS_IOMEM && !NO_IOPORT_MAP 404 depends on HAS_IOMEM && !NO_IOPORT_MAP
520 default y 405 default y
521 406
522 source "kernel/dma/Kconfig" !! 407 config HAS_DMA
>> 408 bool
>> 409 depends on !NO_DMA
>> 410 default y
523 411
524 config SGL_ALLOC 412 config SGL_ALLOC
525 bool 413 bool
526 default n 414 default n
527 415
528 config IOMMU_HELPER !! 416 config DMA_DIRECT_OPS
>> 417 bool
>> 418 depends on HAS_DMA && (!64BIT || ARCH_DMA_ADDR_T_64BIT)
>> 419 default n
>> 420
>> 421 config DMA_VIRT_OPS
529 bool 422 bool
>> 423 depends on HAS_DMA && (!64BIT || ARCH_DMA_ADDR_T_64BIT)
>> 424 default n
530 425
531 config CHECK_SIGNATURE 426 config CHECK_SIGNATURE
532 bool 427 bool
533 428
534 config CPUMASK_OFFSTACK 429 config CPUMASK_OFFSTACK
535 bool "Force CPU masks off stack" if DE 430 bool "Force CPU masks off stack" if DEBUG_PER_CPU_MAPS
536 help 431 help
537 Use dynamic allocation for cpumask_v 432 Use dynamic allocation for cpumask_var_t, instead of putting
538 them on the stack. This is a bit mo 433 them on the stack. This is a bit more expensive, but avoids
539 stack overflow. 434 stack overflow.
540 435
541 config FORCE_NR_CPUS <<
542 def_bool !SMP <<
543 <<
544 config CPU_RMAP 436 config CPU_RMAP
545 bool 437 bool
546 depends on SMP 438 depends on SMP
547 439
548 config DQL 440 config DQL
549 bool 441 bool
550 442
551 config GLOB 443 config GLOB
552 bool 444 bool
553 # This actually supports modular compila 445 # This actually supports modular compilation, but the module overhead
554 # is ridiculous for the amount of code i 446 # is ridiculous for the amount of code involved. Until an out-of-tree
555 # driver asks for it, we'll just link it 447 # driver asks for it, we'll just link it directly it into the kernel
556 # when required. Since we're ignoring o 448 # when required. Since we're ignoring out-of-tree users, there's also
557 # no need bother prompting for a manual 449 # no need bother prompting for a manual decision:
558 # prompt "glob_match() function" 450 # prompt "glob_match() function"
559 help 451 help
560 This option provides a glob_match fu 452 This option provides a glob_match function for performing
561 simple text pattern matching. It or 453 simple text pattern matching. It originated in the ATA code
562 to blacklist particular drive models 454 to blacklist particular drive models, but other device drivers
563 may need similar functionality. 455 may need similar functionality.
564 456
565 All drivers in the Linux kernel tree 457 All drivers in the Linux kernel tree that require this function
566 should automatically select this opt 458 should automatically select this option. Say N unless you
567 are compiling an out-of tree driver 459 are compiling an out-of tree driver which tells you that it
568 depends on this. 460 depends on this.
569 461
570 config GLOB_SELFTEST 462 config GLOB_SELFTEST
571 tristate "glob self-test on init" 463 tristate "glob self-test on init"
572 depends on GLOB 464 depends on GLOB
573 help 465 help
574 This option enables a simple self-te 466 This option enables a simple self-test of the glob_match
575 function on startup. It is primaril 467 function on startup. It is primarily useful for people
576 working on the code to ensure they h 468 working on the code to ensure they haven't introduced any
577 regressions. 469 regressions.
578 470
579 It only adds a little bit of code an 471 It only adds a little bit of code and slows kernel boot (or
580 module load) by a small amount, so y 472 module load) by a small amount, so you're welcome to play with
581 it, but you probably don't need it. 473 it, but you probably don't need it.
582 474
583 # 475 #
584 # Netlink attribute parsing support is select' 476 # Netlink attribute parsing support is select'ed if needed
585 # 477 #
586 config NLATTR 478 config NLATTR
587 bool 479 bool
588 480
589 # 481 #
590 # Generic 64-bit atomic support is selected if 482 # Generic 64-bit atomic support is selected if needed
591 # 483 #
592 config GENERIC_ATOMIC64 484 config GENERIC_ATOMIC64
593 bool 485 bool
594 486
595 config LRU_CACHE 487 config LRU_CACHE
596 tristate 488 tristate
597 489
598 config CLZ_TAB 490 config CLZ_TAB
599 bool 491 bool
600 492
>> 493 config CORDIC
>> 494 tristate "CORDIC algorithm"
>> 495 help
>> 496 This option provides an implementation of the CORDIC algorithm;
>> 497 calculations are in fixed point. Module will be called cordic.
>> 498
>> 499 config DDR
>> 500 bool "JEDEC DDR data"
>> 501 help
>> 502 Data from JEDEC specs for DDR SDRAM memories,
>> 503 particularly the AC timing parameters and addressing
>> 504 information. This data is useful for drivers handling
>> 505 DDR SDRAM controllers.
>> 506
601 config IRQ_POLL 507 config IRQ_POLL
602 bool "IRQ polling library" 508 bool "IRQ polling library"
603 help 509 help
604 Helper library to poll interrupt mit 510 Helper library to poll interrupt mitigation using polling.
605 511
606 config MPILIB 512 config MPILIB
607 tristate 513 tristate
608 select CLZ_TAB 514 select CLZ_TAB
609 help 515 help
610 Multiprecision maths library from Gn 516 Multiprecision maths library from GnuPG.
611 It is used to implement RSA digital 517 It is used to implement RSA digital signature verification,
612 which is used by IMA/EVM digital sig 518 which is used by IMA/EVM digital signature extension.
613 519
614 config SIGNATURE 520 config SIGNATURE
615 tristate 521 tristate
616 depends on KEYS 522 depends on KEYS
617 select CRYPTO 523 select CRYPTO
618 select CRYPTO_SHA1 524 select CRYPTO_SHA1
619 select MPILIB 525 select MPILIB
620 help 526 help
621 Digital signature verification. Curr 527 Digital signature verification. Currently only RSA is supported.
622 Implementation is done using GnuPG M 528 Implementation is done using GnuPG MPI library
623 529
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 # 530 #
633 # libfdt files, only selected if needed. 531 # libfdt files, only selected if needed.
634 # 532 #
635 config LIBFDT 533 config LIBFDT
636 bool 534 bool
637 535
638 config OID_REGISTRY 536 config OID_REGISTRY
639 tristate 537 tristate
640 help 538 help
641 Enable fast lookup object identifier 539 Enable fast lookup object identifier registry.
642 540
643 config UCS2_STRING 541 config UCS2_STRING
644 tristate !! 542 tristate
645 <<
646 # <<
647 # generic vdso <<
648 # <<
649 source "lib/vdso/Kconfig" <<
650 543
651 source "lib/fonts/Kconfig" 544 source "lib/fonts/Kconfig"
652 545
653 config SG_SPLIT 546 config SG_SPLIT
654 def_bool n 547 def_bool n
655 help 548 help
656 Provides a helper to split scatterlis 549 Provides a helper to split scatterlists into chunks, each chunk being
657 a scatterlist. This should be selecte 550 a scatterlist. This should be selected by a driver or an API which
658 whishes to split a scatterlist amongs 551 whishes to split a scatterlist amongst multiple DMA channels.
659 552
660 config SG_POOL 553 config SG_POOL
661 def_bool n 554 def_bool n
662 help 555 help
663 Provides a helper to allocate chained 556 Provides a helper to allocate chained scatterlists. This should be
664 selected by a driver or an API which 557 selected by a driver or an API which whishes to allocate chained
665 scatterlist. 558 scatterlist.
666 559
667 # 560 #
668 # sg chaining option 561 # sg chaining option
669 # 562 #
670 563
671 config ARCH_NO_SG_CHAIN !! 564 config ARCH_HAS_SG_CHAIN
672 def_bool n 565 def_bool n
673 566
674 config ARCH_HAS_PMEM_API 567 config ARCH_HAS_PMEM_API
675 bool 568 bool
676 569
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 570 config ARCH_HAS_UACCESS_FLUSHCACHE
691 bool 571 bool
692 572
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 573 config STACKDEPOT
706 bool 574 bool
707 select STACKTRACE 575 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 <<
727 576
728 config SBITMAP 577 config SBITMAP
729 bool 578 bool
730 579
731 config PARMAN 580 config PARMAN
732 tristate "parman" if COMPILE_TEST 581 tristate "parman" if COMPILE_TEST
733 582
734 config OBJAGG !! 583 config PRIME_NUMBERS
735 tristate "objagg" if COMPILE_TEST !! 584 tristate
736 585
737 config LWQ_TEST !! 586 config STRING_SELFTEST
738 bool "Boot-time test for lwq queuing" !! 587 tristate "Test string functions"
739 help <<
740 Run boot-time test of light-weight q <<
741 588
742 endmenu 589 endmenu
743 590
744 config GENERIC_IOREMAP !! 591 config GENERIC_ASHLDI3
745 bool <<
746 <<
747 config GENERIC_LIB_ASHLDI3 <<
748 bool 592 bool
749 593
750 config GENERIC_LIB_ASHRDI3 !! 594 config GENERIC_ASHRDI3
751 bool 595 bool
752 596
753 config GENERIC_LIB_LSHRDI3 !! 597 config GENERIC_LSHRDI3
754 bool 598 bool
755 599
756 config GENERIC_LIB_MULDI3 !! 600 config GENERIC_MULDI3
757 bool 601 bool
758 602
759 config GENERIC_LIB_CMPDI2 !! 603 config GENERIC_CMPDI2
760 bool 604 bool
761 605
762 config GENERIC_LIB_UCMPDI2 !! 606 config GENERIC_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 607 bool
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