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