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