11da177e4SLinus Torvalds# 21da177e4SLinus Torvalds# Library configuration 31da177e4SLinus Torvalds# 41da177e4SLinus Torvalds 54370aa4aSLai Jiangshanconfig BINARY_PRINTF 64370aa4aSLai Jiangshan def_bool n 74370aa4aSLai Jiangshan 81da177e4SLinus Torvaldsmenu "Library routines" 91da177e4SLinus Torvalds 10f5e70d0fSDavid Woodhouseconfig RAID6_PQ 11f5e70d0fSDavid Woodhouse tristate 12f5e70d0fSDavid Woodhouse 13a5cfc1ecSAkinobu Mitaconfig BITREVERSE 14a5cfc1ecSAkinobu Mita tristate 15a5cfc1ecSAkinobu Mita 16556d2f05SYalin Wangconfig HAVE_ARCH_BITREVERSE 17841c0090SChristoph Jaeger bool 18556d2f05SYalin Wang default n 19556d2f05SYalin Wang depends on BITREVERSE 20556d2f05SYalin Wang help 219e522c0dSAndrew Morton This option enables the use of hardware bit-reversal instructions on 229e522c0dSAndrew Morton architectures which support such operations. 23556d2f05SYalin Wang 248759ef32SOskar Schirmerconfig RATIONAL 256341e62bSChristoph Jaeger bool 268759ef32SOskar Schirmer 272922585bSDavid S. Millerconfig GENERIC_STRNCPY_FROM_USER 282922585bSDavid S. Miller bool 292922585bSDavid S. Miller 30a08c5356SLinus Torvaldsconfig GENERIC_STRNLEN_USER 31a08c5356SLinus Torvalds bool 32a08c5356SLinus Torvalds 334cd5773aSAndy Shevchenkoconfig GENERIC_NET_UTILS 344cd5773aSAndy Shevchenko bool 354cd5773aSAndy Shevchenko 3619870defSAlexander van Heukelumconfig GENERIC_FIND_FIRST_BIT 379ba16087SJan Beulich bool 3819870defSAlexander van Heukelum 39b923650bSMichael S. Tsirkinconfig NO_GENERIC_PCI_IOPORT_MAP 40b923650bSMichael S. Tsirkin bool 41b923650bSMichael S. Tsirkin 4266eab4dfSMichael S. Tsirkinconfig GENERIC_PCI_IOMAP 4366eab4dfSMichael S. Tsirkin bool 4466eab4dfSMichael S. Tsirkin 454673ca8eSMichael S. Tsirkinconfig GENERIC_IOMAP 464673ca8eSMichael S. Tsirkin bool 4766eab4dfSMichael S. Tsirkin select GENERIC_PCI_IOMAP 484673ca8eSMichael S. Tsirkin 49087fafd1SRichard Weinbergerconfig GENERIC_IO 506341e62bSChristoph Jaeger bool 51087fafd1SRichard Weinberger default n 52087fafd1SRichard Weinberger 534ccf4beaSWolfram Sangconfig STMP_DEVICE 544ccf4beaSWolfram Sang bool 554ccf4beaSWolfram Sang 56bc08b449SLinus Torvaldsconfig ARCH_USE_CMPXCHG_LOCKREF 57bc08b449SLinus Torvalds bool 58bc08b449SLinus Torvalds 5972d93104SLinus Torvaldsconfig ARCH_HAS_FAST_MULTIPLIER 6072d93104SLinus Torvalds bool 6172d93104SLinus Torvalds 621da177e4SLinus Torvaldsconfig CRC_CCITT 631da177e4SLinus Torvalds tristate "CRC-CCITT functions" 641da177e4SLinus Torvalds help 651da177e4SLinus Torvalds This option is provided for the case where no in-kernel-tree 661da177e4SLinus Torvalds modules require CRC-CCITT functions, but a module built outside 671da177e4SLinus Torvalds the kernel tree does. Such modules that use library CRC-CCITT 681da177e4SLinus Torvalds functions require M here. 691da177e4SLinus Torvalds 707657ec1fSEvgeniy Polyakovconfig CRC16 717657ec1fSEvgeniy Polyakov tristate "CRC16 functions" 727657ec1fSEvgeniy Polyakov help 737657ec1fSEvgeniy Polyakov This option is provided for the case where no in-kernel-tree 747657ec1fSEvgeniy Polyakov modules require CRC16 functions, but a module built outside 757657ec1fSEvgeniy Polyakov the kernel tree does. Such modules that use library CRC16 767657ec1fSEvgeniy Polyakov functions require M here. 777657ec1fSEvgeniy Polyakov 78f11f594eSMartin K. Petersenconfig CRC_T10DIF 79f11f594eSMartin K. Petersen tristate "CRC calculation for the T10 Data Integrity Field" 8068411521SHerbert Xu select CRYPTO 8168411521SHerbert Xu select CRYPTO_CRCT10DIF 82f11f594eSMartin K. Petersen help 83f11f594eSMartin K. Petersen This option is only needed if a module that's not in the 84f11f594eSMartin K. Petersen kernel tree needs to calculate CRC checks for use with the 85f11f594eSMartin K. Petersen SCSI data integrity subsystem. 86f11f594eSMartin K. Petersen 873e7cbae7SIvo van Doornconfig CRC_ITU_T 883e7cbae7SIvo van Doorn tristate "CRC ITU-T V.41 functions" 893e7cbae7SIvo van Doorn help 903e7cbae7SIvo van Doorn This option is provided for the case where no in-kernel-tree 913e7cbae7SIvo van Doorn modules require CRC ITU-T V.41 functions, but a module built outside 923e7cbae7SIvo van Doorn the kernel tree does. Such modules that use library CRC ITU-T V.41 933e7cbae7SIvo van Doorn functions require M here. 943e7cbae7SIvo van Doorn 951da177e4SLinus Torvaldsconfig CRC32 9646c5801eSDarrick J. Wong tristate "CRC32/CRC32c functions" 971da177e4SLinus Torvalds default y 98906d66dfSAkinobu Mita select BITREVERSE 991da177e4SLinus Torvalds help 1001da177e4SLinus Torvalds This option is provided for the case where no in-kernel-tree 10146c5801eSDarrick J. Wong modules require CRC32/CRC32c functions, but a module built outside 10246c5801eSDarrick J. Wong the kernel tree does. Such modules that use library CRC32/CRC32c 10346c5801eSDarrick J. Wong functions require M here. 1041da177e4SLinus Torvalds 1053863ef31SBob Pearsonconfig CRC32_SELFTEST 1063863ef31SBob Pearson bool "CRC32 perform self test on init" 1073863ef31SBob Pearson default n 1083863ef31SBob Pearson depends on CRC32 1093863ef31SBob Pearson help 1103863ef31SBob Pearson This option enables the CRC32 library functions to perform a 1113863ef31SBob Pearson self test on initialization. The self test computes crc32_le 1123863ef31SBob Pearson and crc32_be over byte strings with random alignment and length 1133863ef31SBob Pearson and computes the total elapsed time and number of bytes processed. 1143863ef31SBob Pearson 1155cde7656SDarrick J. Wongchoice 1165cde7656SDarrick J. Wong prompt "CRC32 implementation" 1175cde7656SDarrick J. Wong depends on CRC32 1185cde7656SDarrick J. Wong default CRC32_SLICEBY8 11982edb4baSDarrick J. Wong help 12082edb4baSDarrick J. Wong This option allows a kernel builder to override the default choice 12182edb4baSDarrick J. Wong of CRC32 algorithm. Choose the default ("slice by 8") unless you 12282edb4baSDarrick J. Wong know that you need one of the others. 1235cde7656SDarrick J. Wong 1245cde7656SDarrick J. Wongconfig CRC32_SLICEBY8 1255cde7656SDarrick J. Wong bool "Slice by 8 bytes" 1265cde7656SDarrick J. Wong help 1275cde7656SDarrick J. Wong Calculate checksum 8 bytes at a time with a clever slicing algorithm. 1285cde7656SDarrick J. Wong This is the fastest algorithm, but comes with a 8KiB lookup table. 1295cde7656SDarrick J. Wong Most modern processors have enough cache to hold this table without 1305cde7656SDarrick J. Wong thrashing the cache. 1315cde7656SDarrick J. Wong 1325cde7656SDarrick J. Wong This is the default implementation choice. Choose this one unless 1335cde7656SDarrick J. Wong you have a good reason not to. 1345cde7656SDarrick J. Wong 1355cde7656SDarrick J. Wongconfig CRC32_SLICEBY4 1365cde7656SDarrick J. Wong bool "Slice by 4 bytes" 1375cde7656SDarrick J. Wong help 1385cde7656SDarrick J. Wong Calculate checksum 4 bytes at a time with a clever slicing algorithm. 1395cde7656SDarrick J. Wong This is a bit slower than slice by 8, but has a smaller 4KiB lookup 1405cde7656SDarrick J. Wong table. 1415cde7656SDarrick J. Wong 1425cde7656SDarrick J. Wong Only choose this option if you know what you are doing. 1435cde7656SDarrick J. Wong 1445cde7656SDarrick J. Wongconfig CRC32_SARWATE 1455cde7656SDarrick J. Wong bool "Sarwate's Algorithm (one byte at a time)" 1465cde7656SDarrick J. Wong help 1475cde7656SDarrick J. Wong Calculate checksum a byte at a time using Sarwate's algorithm. This 1485cde7656SDarrick J. Wong is not particularly fast, but has a small 256 byte lookup table. 1495cde7656SDarrick J. Wong 1505cde7656SDarrick J. Wong Only choose this option if you know what you are doing. 1515cde7656SDarrick J. Wong 1525cde7656SDarrick J. Wongconfig CRC32_BIT 1535cde7656SDarrick J. Wong bool "Classic Algorithm (one bit at a time)" 1545cde7656SDarrick J. Wong help 1555cde7656SDarrick J. Wong Calculate checksum one bit at a time. This is VERY slow, but has 1565cde7656SDarrick J. Wong no lookup table. This is provided as a debugging option. 1575cde7656SDarrick J. Wong 1585cde7656SDarrick J. Wong Only choose this option if you are debugging crc32. 1595cde7656SDarrick J. Wong 1605cde7656SDarrick J. Wongendchoice 1615cde7656SDarrick J. Wong 162ad241528SJan Nikitenkoconfig CRC7 163ad241528SJan Nikitenko tristate "CRC7 functions" 164ad241528SJan Nikitenko help 165ad241528SJan Nikitenko This option is provided for the case where no in-kernel-tree 166ad241528SJan Nikitenko modules require CRC7 functions, but a module built outside 167ad241528SJan Nikitenko the kernel tree does. Such modules that use library CRC7 168ad241528SJan Nikitenko functions require M here. 169ad241528SJan Nikitenko 1701da177e4SLinus Torvaldsconfig LIBCRC32C 1711da177e4SLinus Torvalds tristate "CRC32c (Castagnoli, et al) Cyclic Redundancy-Check" 17293027354SHerbert Xu select CRYPTO 17369c35efcSHerbert Xu select CRYPTO_CRC32C 1741da177e4SLinus Torvalds help 1751da177e4SLinus Torvalds This option is provided for the case where no in-kernel-tree 1761da177e4SLinus Torvalds modules require CRC32c functions, but a module built outside the 1771da177e4SLinus Torvalds kernel tree does. Such modules that use library CRC32c functions 1781da177e4SLinus Torvalds require M here. See Castagnoli93. 1791da177e4SLinus Torvalds Module will be libcrc32c. 1801da177e4SLinus Torvalds 1817150962dSArend van Sprielconfig CRC8 1827150962dSArend van Spriel tristate "CRC8 function" 1837150962dSArend van Spriel help 1847150962dSArend van Spriel This option provides CRC8 function. Drivers may select this 1857150962dSArend van Spriel when they need to do cyclic redundancy check according CRC8 1867150962dSArend van Spriel algorithm. Module will be called crc8. 1877150962dSArend van Spriel 188e65e1fc2SAl Viroconfig AUDIT_GENERIC 189e65e1fc2SAl Viro bool 190e65e1fc2SAl Viro depends on AUDIT && !AUDIT_ARCH 191e65e1fc2SAl Viro default y 192e65e1fc2SAl Viro 1934b588411SAKASHI Takahiroconfig AUDIT_ARCH_COMPAT_GENERIC 1944b588411SAKASHI Takahiro bool 1954b588411SAKASHI Takahiro default n 1964b588411SAKASHI Takahiro 1974b588411SAKASHI Takahiroconfig AUDIT_COMPAT_GENERIC 1984b588411SAKASHI Takahiro bool 1994b588411SAKASHI Takahiro depends on AUDIT_GENERIC && AUDIT_ARCH_COMPAT_GENERIC && COMPAT 2004b588411SAKASHI Takahiro default y 2014b588411SAKASHI Takahiro 202a6a9c0f1SDaniel Borkmannconfig RANDOM32_SELFTEST 203a6a9c0f1SDaniel Borkmann bool "PRNG perform self test on init" 204a6a9c0f1SDaniel Borkmann default n 205a6a9c0f1SDaniel Borkmann help 206a6a9c0f1SDaniel Borkmann This option enables the 32 bit PRNG library functions to perform a 207a6a9c0f1SDaniel Borkmann self test on initialization. 208a6a9c0f1SDaniel Borkmann 2091da177e4SLinus Torvalds# 2101da177e4SLinus Torvalds# compression support is select'ed if needed 2111da177e4SLinus Torvalds# 2122da572c9SDan Streetmanconfig 842_COMPRESS 2135b571677SArnd Bergmann select CRC32 2142da572c9SDan Streetman tristate 2152da572c9SDan Streetman 2162da572c9SDan Streetmanconfig 842_DECOMPRESS 2175b571677SArnd Bergmann select CRC32 2182da572c9SDan Streetman tristate 2192da572c9SDan Streetman 2201da177e4SLinus Torvaldsconfig ZLIB_INFLATE 2211da177e4SLinus Torvalds tristate 2221da177e4SLinus Torvalds 2231da177e4SLinus Torvaldsconfig ZLIB_DEFLATE 2241da177e4SLinus Torvalds tristate 2251fd4e5c3SAndrew Morton select BITREVERSE 2261da177e4SLinus Torvalds 22764c70b1cSRichard Purdieconfig LZO_COMPRESS 22864c70b1cSRichard Purdie tristate 22964c70b1cSRichard Purdie 23064c70b1cSRichard Purdieconfig LZO_DECOMPRESS 23164c70b1cSRichard Purdie tristate 23264c70b1cSRichard Purdie 233c72ac7a1SChanho Minconfig LZ4_COMPRESS 234c72ac7a1SChanho Min tristate 235c72ac7a1SChanho Min 236c72ac7a1SChanho Minconfig LZ4HC_COMPRESS 237c72ac7a1SChanho Min tristate 238c72ac7a1SChanho Min 239e76e1fdfSKyungsik Leeconfig LZ4_DECOMPRESS 240e76e1fdfSKyungsik Lee tristate 241e76e1fdfSKyungsik Lee 24224fa0402SLasse Collinsource "lib/xz/Kconfig" 24324fa0402SLasse Collin 2441da177e4SLinus Torvalds# 245c8531ab3SH. Peter Anvin# These all provide a common interface (hence the apparent duplication with 246c8531ab3SH. Peter Anvin# ZLIB_INFLATE; DECOMPRESS_GZIP is just a wrapper.) 247c8531ab3SH. Peter Anvin# 248c8531ab3SH. Peter Anvinconfig DECOMPRESS_GZIP 2497856a16eSH. Peter Anvin select ZLIB_INFLATE 250c8531ab3SH. Peter Anvin tristate 251c8531ab3SH. Peter Anvin 252c8531ab3SH. Peter Anvinconfig DECOMPRESS_BZIP2 253c8531ab3SH. Peter Anvin tristate 254c8531ab3SH. Peter Anvin 255c8531ab3SH. Peter Anvinconfig DECOMPRESS_LZMA 256c8531ab3SH. Peter Anvin tristate 257c8531ab3SH. Peter Anvin 2583ebe1243SLasse Collinconfig DECOMPRESS_XZ 2593ebe1243SLasse Collin select XZ_DEC 2603ebe1243SLasse Collin tristate 2613ebe1243SLasse Collin 262cacb246fSAlbin Tonnerreconfig DECOMPRESS_LZO 263cacb246fSAlbin Tonnerre select LZO_DECOMPRESS 264cacb246fSAlbin Tonnerre tristate 265cacb246fSAlbin Tonnerre 266e76e1fdfSKyungsik Leeconfig DECOMPRESS_LZ4 267e76e1fdfSKyungsik Lee select LZ4_DECOMPRESS 268e76e1fdfSKyungsik Lee tristate 269e76e1fdfSKyungsik Lee 270c8531ab3SH. Peter Anvin# 271f14f75b8SJes Sorensen# Generic allocator support is selected if needed 272f14f75b8SJes Sorensen# 273f14f75b8SJes Sorensenconfig GENERIC_ALLOCATOR 2746341e62bSChristoph Jaeger bool 275f14f75b8SJes Sorensen 276f14f75b8SJes Sorensen# 2771da177e4SLinus Torvalds# reed solomon support is select'ed if needed 2781da177e4SLinus Torvalds# 2791da177e4SLinus Torvaldsconfig REED_SOLOMON 2801da177e4SLinus Torvalds tristate 2811da177e4SLinus Torvalds 2821da177e4SLinus Torvaldsconfig REED_SOLOMON_ENC8 2836341e62bSChristoph Jaeger bool 2841da177e4SLinus Torvalds 2851da177e4SLinus Torvaldsconfig REED_SOLOMON_DEC8 2866341e62bSChristoph Jaeger bool 2871da177e4SLinus Torvalds 2881da177e4SLinus Torvaldsconfig REED_SOLOMON_ENC16 2896341e62bSChristoph Jaeger bool 2901da177e4SLinus Torvalds 2911da177e4SLinus Torvaldsconfig REED_SOLOMON_DEC16 2926341e62bSChristoph Jaeger bool 2931da177e4SLinus Torvalds 294f7704347SDavid S. Miller# 295437aa565SIvan Djelic# BCH support is selected if needed 296437aa565SIvan Djelic# 297437aa565SIvan Djelicconfig BCH 298437aa565SIvan Djelic tristate 299437aa565SIvan Djelic 300437aa565SIvan Djelicconfig BCH_CONST_PARAMS 3016341e62bSChristoph Jaeger bool 302437aa565SIvan Djelic help 303437aa565SIvan Djelic Drivers may select this option to force specific constant 304437aa565SIvan Djelic values for parameters 'm' (Galois field order) and 't' 305437aa565SIvan Djelic (error correction capability). Those specific values must 306437aa565SIvan Djelic be set by declaring default values for symbols BCH_CONST_M 307437aa565SIvan Djelic and BCH_CONST_T. 308437aa565SIvan Djelic Doing so will enable extra compiler optimizations, 309437aa565SIvan Djelic improving encoding and decoding performance up to 2x for 310437aa565SIvan Djelic usual (m,t) values (typically such that m*t < 200). 311437aa565SIvan Djelic When this option is selected, the BCH library supports 312437aa565SIvan Djelic only a single (m,t) configuration. This is mainly useful 313437aa565SIvan Djelic for NAND flash board drivers requiring known, fixed BCH 314437aa565SIvan Djelic parameters. 315437aa565SIvan Djelic 316437aa565SIvan Djelicconfig BCH_CONST_M 317437aa565SIvan Djelic int 318437aa565SIvan Djelic range 5 15 319437aa565SIvan Djelic help 320437aa565SIvan Djelic Constant value for Galois field order 'm'. If 'k' is the 321437aa565SIvan Djelic number of data bits to protect, 'm' should be chosen such 322437aa565SIvan Djelic that (k + m*t) <= 2**m - 1. 323437aa565SIvan Djelic Drivers should declare a default value for this symbol if 324437aa565SIvan Djelic they select option BCH_CONST_PARAMS. 325437aa565SIvan Djelic 326437aa565SIvan Djelicconfig BCH_CONST_T 327437aa565SIvan Djelic int 328437aa565SIvan Djelic help 329437aa565SIvan Djelic Constant value for error correction capability in bits 't'. 330437aa565SIvan Djelic Drivers should declare a default value for this symbol if 331437aa565SIvan Djelic they select option BCH_CONST_PARAMS. 332437aa565SIvan Djelic 333437aa565SIvan Djelic# 334f7704347SDavid S. Miller# Textsearch support is select'ed if needed 335f7704347SDavid S. Miller# 3362de4ff7bSThomas Grafconfig TEXTSEARCH 3376341e62bSChristoph Jaeger bool 3381da177e4SLinus Torvalds 339df3fb93aSThomas Grafconfig TEXTSEARCH_KMP 340f7704347SDavid S. Miller tristate 341df3fb93aSThomas Graf 3428082e4edSPablo Neira Ayusoconfig TEXTSEARCH_BM 34329cb9f9cSDavid S. Miller tristate 3448082e4edSPablo Neira Ayuso 3456408f79cSThomas Grafconfig TEXTSEARCH_FSM 346f7704347SDavid S. Miller tristate 3476408f79cSThomas Graf 3485db53f3eSJoern Engelconfig BTREE 3496341e62bSChristoph Jaeger bool 3505db53f3eSJoern Engel 351a88cc108SChris Wilsonconfig INTERVAL_TREE 3526341e62bSChristoph Jaeger bool 353a88cc108SChris Wilson help 354a88cc108SChris Wilson Simple, embeddable, interval-tree. Can find the start of an 355a88cc108SChris Wilson overlapping range in log(n) time and then iterate over all 356a88cc108SChris Wilson overlapping nodes. The algorithm is implemented as an 357a88cc108SChris Wilson augmented rbtree. 358a88cc108SChris Wilson 359a88cc108SChris Wilson See: 360a88cc108SChris Wilson 361a88cc108SChris Wilson Documentation/rbtree.txt 362a88cc108SChris Wilson 363a88cc108SChris Wilson for more information. 364a88cc108SChris Wilson 36557578c2eSMatthew Wilcoxconfig RADIX_TREE_MULTIORDER 36657578c2eSMatthew Wilcox bool 36757578c2eSMatthew Wilcox 3683cb98950SDavid Howellsconfig ASSOCIATIVE_ARRAY 3693cb98950SDavid Howells bool 3703cb98950SDavid Howells help 3713cb98950SDavid Howells Generic associative array. Can be searched and iterated over whilst 3723cb98950SDavid Howells it is being modified. It is also reasonably quick to search and 3733cb98950SDavid Howells modify. The algorithms are non-recursive, and the trees are highly 3743cb98950SDavid Howells capacious. 3753cb98950SDavid Howells 3763cb98950SDavid Howells See: 3773cb98950SDavid Howells 3783cb98950SDavid Howells Documentation/assoc_array.txt 3793cb98950SDavid Howells 3803cb98950SDavid Howells for more information. 3813cb98950SDavid Howells 3825ea81769SAl Viroconfig HAS_IOMEM 3836341e62bSChristoph Jaeger bool 3845ea81769SAl Viro depends on !NO_IOMEM 385087fafd1SRichard Weinberger select GENERIC_IO 3865ea81769SAl Viro default y 3875ea81769SAl Viro 388ce816fa8SUwe Kleine-Königconfig HAS_IOPORT_MAP 3896341e62bSChristoph Jaeger bool 390ce816fa8SUwe Kleine-König depends on HAS_IOMEM && !NO_IOPORT_MAP 391ee36c2bfSAl Viro default y 392ee36c2bfSAl Viro 393411f0f3eSHeiko Carstensconfig HAS_DMA 3946341e62bSChristoph Jaeger bool 395411f0f3eSHeiko Carstens depends on !NO_DMA 396411f0f3eSHeiko Carstens default y 397411f0f3eSHeiko Carstens 398*7844572cSBart Van Asscheconfig DMA_NOOP_OPS 399*7844572cSBart Van Assche bool 400*7844572cSBart Van Assche depends on HAS_DMA && (!64BIT || ARCH_DMA_ADDR_T_64BIT) 401*7844572cSBart Van Assche default n 402*7844572cSBart Van Assche 403928923c7SGeert Uytterhoevenconfig CHECK_SIGNATURE 404928923c7SGeert Uytterhoeven bool 405928923c7SGeert Uytterhoeven 406aab46da0SRusty Russellconfig CPUMASK_OFFSTACK 407aab46da0SRusty Russell bool "Force CPU masks off stack" if DEBUG_PER_CPU_MAPS 408aab46da0SRusty Russell help 409aab46da0SRusty Russell Use dynamic allocation for cpumask_var_t, instead of putting 410aab46da0SRusty Russell them on the stack. This is a bit more expensive, but avoids 411aab46da0SRusty Russell stack overflow. 412aab46da0SRusty Russell 413c39649c3SBen Hutchingsconfig CPU_RMAP 414c39649c3SBen Hutchings bool 415c39649c3SBen Hutchings depends on SMP 416c39649c3SBen Hutchings 41775957ba3STom Herbertconfig DQL 41875957ba3STom Herbert bool 41975957ba3STom Herbert 420b0125085SGeorge Spelvinconfig GLOB 421b0125085SGeorge Spelvin bool 422b0125085SGeorge Spelvin# This actually supports modular compilation, but the module overhead 423b0125085SGeorge Spelvin# is ridiculous for the amount of code involved. Until an out-of-tree 424b0125085SGeorge Spelvin# driver asks for it, we'll just link it directly it into the kernel 425b0125085SGeorge Spelvin# when required. Since we're ignoring out-of-tree users, there's also 426b0125085SGeorge Spelvin# no need bother prompting for a manual decision: 427b0125085SGeorge Spelvin# prompt "glob_match() function" 428b0125085SGeorge Spelvin help 429b0125085SGeorge Spelvin This option provides a glob_match function for performing 430b0125085SGeorge Spelvin simple text pattern matching. It originated in the ATA code 431b0125085SGeorge Spelvin to blacklist particular drive models, but other device drivers 432b0125085SGeorge Spelvin may need similar functionality. 433b0125085SGeorge Spelvin 434b0125085SGeorge Spelvin All drivers in the Linux kernel tree that require this function 435b0125085SGeorge Spelvin should automatically select this option. Say N unless you 436b0125085SGeorge Spelvin are compiling an out-of tree driver which tells you that it 437b0125085SGeorge Spelvin depends on this. 438b0125085SGeorge Spelvin 4395f9be824SGeorge Spelvinconfig GLOB_SELFTEST 4405f9be824SGeorge Spelvin bool "glob self-test on init" 4415f9be824SGeorge Spelvin default n 4425f9be824SGeorge Spelvin depends on GLOB 4435f9be824SGeorge Spelvin help 4445f9be824SGeorge Spelvin This option enables a simple self-test of the glob_match 4455f9be824SGeorge Spelvin function on startup. It is primarily useful for people 4465f9be824SGeorge Spelvin working on the code to ensure they haven't introduced any 4475f9be824SGeorge Spelvin regressions. 4485f9be824SGeorge Spelvin 4495f9be824SGeorge Spelvin It only adds a little bit of code and slows kernel boot (or 4505f9be824SGeorge Spelvin module load) by a small amount, so you're welcome to play with 4515f9be824SGeorge Spelvin it, but you probably don't need it. 4525f9be824SGeorge Spelvin 453e9cc8bddSGeert Uytterhoeven# 454e9cc8bddSGeert Uytterhoeven# Netlink attribute parsing support is select'ed if needed 455e9cc8bddSGeert Uytterhoeven# 456e9cc8bddSGeert Uytterhoevenconfig NLATTR 457e9cc8bddSGeert Uytterhoeven bool 458e9cc8bddSGeert Uytterhoeven 45909d4e0edSPaul Mackerras# 46009d4e0edSPaul Mackerras# Generic 64-bit atomic support is selected if needed 46109d4e0edSPaul Mackerras# 46209d4e0edSPaul Mackerrasconfig GENERIC_ATOMIC64 46309d4e0edSPaul Mackerras bool 46409d4e0edSPaul Mackerras 465b411b363SPhilipp Reisnerconfig LRU_CACHE 466b411b363SPhilipp Reisner tristate 467b411b363SPhilipp Reisner 468c6df4b17SDavid Millerconfig CLZ_TAB 469c6df4b17SDavid Miller bool 470c6df4b17SDavid Miller 47110f8113eSArend van Sprielconfig CORDIC 472d89ce936SMichael Witten tristate "CORDIC algorithm" 47310f8113eSArend van Spriel help 474435a95c5SMichael Witten This option provides an implementation of the CORDIC algorithm; 475435a95c5SMichael Witten calculations are in fixed point. Module will be called cordic. 47610f8113eSArend van Spriel 4779c1c21a0SAneesh Vconfig DDR 4789c1c21a0SAneesh V bool "JEDEC DDR data" 4799c1c21a0SAneesh V help 4809c1c21a0SAneesh V Data from JEDEC specs for DDR SDRAM memories, 4819c1c21a0SAneesh V particularly the AC timing parameters and addressing 4829c1c21a0SAneesh V information. This data is useful for drivers handling 4839c1c21a0SAneesh V DDR SDRAM controllers. 4849c1c21a0SAneesh V 485511cbce2SChristoph Hellwigconfig IRQ_POLL 486511cbce2SChristoph Hellwig bool "IRQ polling library" 487511cbce2SChristoph Hellwig help 488511cbce2SChristoph Hellwig Helper library to poll interrupt mitigation using polling. 489511cbce2SChristoph Hellwig 490d9c46b18SDmitry Kasatkinconfig MPILIB 4912e5f094bSDmitry Kasatkin tristate 492c6df4b17SDavid Miller select CLZ_TAB 493d9c46b18SDmitry Kasatkin help 494d9c46b18SDmitry Kasatkin Multiprecision maths library from GnuPG. 495d9c46b18SDmitry Kasatkin It is used to implement RSA digital signature verification, 496d9c46b18SDmitry Kasatkin which is used by IMA/EVM digital signature extension. 497d9c46b18SDmitry Kasatkin 4985e8898e9SDmitry Kasatkinconfig SIGNATURE 4992e5f094bSDmitry Kasatkin tristate 5000d1f64f6SDmitry Kasatkin depends on KEYS 5010d1f64f6SDmitry Kasatkin select CRYPTO 502be440ec7SDmitry Kasatkin select CRYPTO_SHA1 503051dbb91SDmitry Kasatkin select MPILIB 504051dbb91SDmitry Kasatkin help 505051dbb91SDmitry Kasatkin Digital signature verification. Currently only RSA is supported. 506051dbb91SDmitry Kasatkin Implementation is done using GnuPG MPI library 507051dbb91SDmitry Kasatkin 508ab253839SDavid Daney# 509ab253839SDavid Daney# libfdt files, only selected if needed. 510ab253839SDavid Daney# 511ab253839SDavid Daneyconfig LIBFDT 512ab253839SDavid Daney bool 513ab253839SDavid Daney 514a77ad6eaSDavid Howellsconfig OID_REGISTRY 515a77ad6eaSDavid Howells tristate 516a77ad6eaSDavid Howells help 517a77ad6eaSDavid Howells Enable fast lookup object identifier registry. 518a77ad6eaSDavid Howells 5190635eb8aSMatthew Garrettconfig UCS2_STRING 5200635eb8aSMatthew Garrett tristate 5210635eb8aSMatthew Garrett 522ee89bd6bSGeert Uytterhoevensource "lib/fonts/Kconfig" 523ee89bd6bSGeert Uytterhoeven 524f8bcbe62SRobert Jarzmikconfig SG_SPLIT 525f8bcbe62SRobert Jarzmik def_bool n 526f8bcbe62SRobert Jarzmik help 5277f7e92f7SGeert Uytterhoeven Provides a helper to split scatterlists into chunks, each chunk being 5287f7e92f7SGeert Uytterhoeven a scatterlist. This should be selected by a driver or an API which 5297f7e92f7SGeert Uytterhoeven whishes to split a scatterlist amongst multiple DMA channels. 530f8bcbe62SRobert Jarzmik 5319b1d6c89SMing Linconfig SG_POOL 5329b1d6c89SMing Lin def_bool n 5339b1d6c89SMing Lin help 5349b1d6c89SMing Lin Provides a helper to allocate chained scatterlists. This should be 5359b1d6c89SMing Lin selected by a driver or an API which whishes to allocate chained 5369b1d6c89SMing Lin scatterlist. 5379b1d6c89SMing Lin 538308c09f1SLaura Abbott# 539308c09f1SLaura Abbott# sg chaining option 540308c09f1SLaura Abbott# 541308c09f1SLaura Abbott 542308c09f1SLaura Abbottconfig ARCH_HAS_SG_CHAIN 543308c09f1SLaura Abbott def_bool n 544308c09f1SLaura Abbott 54561031952SRoss Zwislerconfig ARCH_HAS_PMEM_API 54661031952SRoss Zwisler bool 54761031952SRoss Zwisler 54867a3e8feSRoss Zwislerconfig ARCH_HAS_MMIO_FLUSH 54967a3e8feSRoss Zwisler bool 55067a3e8feSRoss Zwisler 551cd11016eSAlexander Potapenkoconfig STACKDEPOT 552cd11016eSAlexander Potapenko bool 553cd11016eSAlexander Potapenko select STACKTRACE 554cd11016eSAlexander Potapenko 55588459642SOmar Sandovalconfig SBITMAP 55688459642SOmar Sandoval bool 55788459642SOmar Sandoval 5582de4ff7bSThomas Grafendmenu 559