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 21556d2f05SYalin Wang This option provides an config for the architecture which have instruction 22556d2f05SYalin Wang can do bitreverse operation, we use the hardware instruction if the architecture 23556d2f05SYalin Wang have this capability. 24556d2f05SYalin Wang 258759ef32SOskar Schirmerconfig RATIONAL 266341e62bSChristoph Jaeger bool 278759ef32SOskar Schirmer 282922585bSDavid S. Millerconfig GENERIC_STRNCPY_FROM_USER 292922585bSDavid S. Miller bool 302922585bSDavid S. Miller 31a08c5356SLinus Torvaldsconfig GENERIC_STRNLEN_USER 32a08c5356SLinus Torvalds bool 33a08c5356SLinus Torvalds 344cd5773aSAndy Shevchenkoconfig GENERIC_NET_UTILS 354cd5773aSAndy Shevchenko bool 364cd5773aSAndy Shevchenko 3719870defSAlexander van Heukelumconfig GENERIC_FIND_FIRST_BIT 389ba16087SJan Beulich bool 3919870defSAlexander van Heukelum 40b923650bSMichael S. Tsirkinconfig NO_GENERIC_PCI_IOPORT_MAP 41b923650bSMichael S. Tsirkin bool 42b923650bSMichael S. Tsirkin 4366eab4dfSMichael S. Tsirkinconfig GENERIC_PCI_IOMAP 4466eab4dfSMichael S. Tsirkin bool 4566eab4dfSMichael S. Tsirkin 464673ca8eSMichael S. Tsirkinconfig GENERIC_IOMAP 474673ca8eSMichael S. Tsirkin bool 4866eab4dfSMichael S. Tsirkin select GENERIC_PCI_IOMAP 494673ca8eSMichael S. Tsirkin 50087fafd1SRichard Weinbergerconfig GENERIC_IO 516341e62bSChristoph Jaeger bool 52087fafd1SRichard Weinberger default n 53087fafd1SRichard Weinberger 544ccf4beaSWolfram Sangconfig STMP_DEVICE 554ccf4beaSWolfram Sang bool 564ccf4beaSWolfram Sang 5722b361d1SOleg Nesterovconfig PERCPU_RWSEM 586341e62bSChristoph Jaeger bool 5922b361d1SOleg Nesterov 60bc08b449SLinus Torvaldsconfig ARCH_USE_CMPXCHG_LOCKREF 61bc08b449SLinus Torvalds bool 62bc08b449SLinus Torvalds 6372d93104SLinus Torvaldsconfig ARCH_HAS_FAST_MULTIPLIER 6472d93104SLinus Torvalds bool 6572d93104SLinus Torvalds 661da177e4SLinus Torvaldsconfig CRC_CCITT 671da177e4SLinus Torvalds tristate "CRC-CCITT functions" 681da177e4SLinus Torvalds help 691da177e4SLinus Torvalds This option is provided for the case where no in-kernel-tree 701da177e4SLinus Torvalds modules require CRC-CCITT functions, but a module built outside 711da177e4SLinus Torvalds the kernel tree does. Such modules that use library CRC-CCITT 721da177e4SLinus Torvalds functions require M here. 731da177e4SLinus Torvalds 747657ec1fSEvgeniy Polyakovconfig CRC16 757657ec1fSEvgeniy Polyakov tristate "CRC16 functions" 767657ec1fSEvgeniy Polyakov help 777657ec1fSEvgeniy Polyakov This option is provided for the case where no in-kernel-tree 787657ec1fSEvgeniy Polyakov modules require CRC16 functions, but a module built outside 797657ec1fSEvgeniy Polyakov the kernel tree does. Such modules that use library CRC16 807657ec1fSEvgeniy Polyakov functions require M here. 817657ec1fSEvgeniy Polyakov 82f11f594eSMartin K. Petersenconfig CRC_T10DIF 83f11f594eSMartin K. Petersen tristate "CRC calculation for the T10 Data Integrity Field" 8468411521SHerbert Xu select CRYPTO 8568411521SHerbert Xu select CRYPTO_CRCT10DIF 86f11f594eSMartin K. Petersen help 87f11f594eSMartin K. Petersen This option is only needed if a module that's not in the 88f11f594eSMartin K. Petersen kernel tree needs to calculate CRC checks for use with the 89f11f594eSMartin K. Petersen SCSI data integrity subsystem. 90f11f594eSMartin K. Petersen 913e7cbae7SIvo van Doornconfig CRC_ITU_T 923e7cbae7SIvo van Doorn tristate "CRC ITU-T V.41 functions" 933e7cbae7SIvo van Doorn help 943e7cbae7SIvo van Doorn This option is provided for the case where no in-kernel-tree 953e7cbae7SIvo van Doorn modules require CRC ITU-T V.41 functions, but a module built outside 963e7cbae7SIvo van Doorn the kernel tree does. Such modules that use library CRC ITU-T V.41 973e7cbae7SIvo van Doorn functions require M here. 983e7cbae7SIvo van Doorn 991da177e4SLinus Torvaldsconfig CRC32 10046c5801eSDarrick J. Wong tristate "CRC32/CRC32c functions" 1011da177e4SLinus Torvalds default y 102906d66dfSAkinobu Mita select BITREVERSE 1031da177e4SLinus Torvalds help 1041da177e4SLinus Torvalds This option is provided for the case where no in-kernel-tree 10546c5801eSDarrick J. Wong modules require CRC32/CRC32c functions, but a module built outside 10646c5801eSDarrick J. Wong the kernel tree does. Such modules that use library CRC32/CRC32c 10746c5801eSDarrick J. Wong functions require M here. 1081da177e4SLinus Torvalds 1093863ef31SBob Pearsonconfig CRC32_SELFTEST 1103863ef31SBob Pearson bool "CRC32 perform self test on init" 1113863ef31SBob Pearson default n 1123863ef31SBob Pearson depends on CRC32 1133863ef31SBob Pearson help 1143863ef31SBob Pearson This option enables the CRC32 library functions to perform a 1153863ef31SBob Pearson self test on initialization. The self test computes crc32_le 1163863ef31SBob Pearson and crc32_be over byte strings with random alignment and length 1173863ef31SBob Pearson and computes the total elapsed time and number of bytes processed. 1183863ef31SBob Pearson 1195cde7656SDarrick J. Wongchoice 1205cde7656SDarrick J. Wong prompt "CRC32 implementation" 1215cde7656SDarrick J. Wong depends on CRC32 1225cde7656SDarrick J. Wong default CRC32_SLICEBY8 12382edb4baSDarrick J. Wong help 12482edb4baSDarrick J. Wong This option allows a kernel builder to override the default choice 12582edb4baSDarrick J. Wong of CRC32 algorithm. Choose the default ("slice by 8") unless you 12682edb4baSDarrick J. Wong know that you need one of the others. 1275cde7656SDarrick J. Wong 1285cde7656SDarrick J. Wongconfig CRC32_SLICEBY8 1295cde7656SDarrick J. Wong bool "Slice by 8 bytes" 1305cde7656SDarrick J. Wong help 1315cde7656SDarrick J. Wong Calculate checksum 8 bytes at a time with a clever slicing algorithm. 1325cde7656SDarrick J. Wong This is the fastest algorithm, but comes with a 8KiB lookup table. 1335cde7656SDarrick J. Wong Most modern processors have enough cache to hold this table without 1345cde7656SDarrick J. Wong thrashing the cache. 1355cde7656SDarrick J. Wong 1365cde7656SDarrick J. Wong This is the default implementation choice. Choose this one unless 1375cde7656SDarrick J. Wong you have a good reason not to. 1385cde7656SDarrick J. Wong 1395cde7656SDarrick J. Wongconfig CRC32_SLICEBY4 1405cde7656SDarrick J. Wong bool "Slice by 4 bytes" 1415cde7656SDarrick J. Wong help 1425cde7656SDarrick J. Wong Calculate checksum 4 bytes at a time with a clever slicing algorithm. 1435cde7656SDarrick J. Wong This is a bit slower than slice by 8, but has a smaller 4KiB lookup 1445cde7656SDarrick J. Wong table. 1455cde7656SDarrick J. Wong 1465cde7656SDarrick J. Wong Only choose this option if you know what you are doing. 1475cde7656SDarrick J. Wong 1485cde7656SDarrick J. Wongconfig CRC32_SARWATE 1495cde7656SDarrick J. Wong bool "Sarwate's Algorithm (one byte at a time)" 1505cde7656SDarrick J. Wong help 1515cde7656SDarrick J. Wong Calculate checksum a byte at a time using Sarwate's algorithm. This 1525cde7656SDarrick J. Wong is not particularly fast, but has a small 256 byte lookup table. 1535cde7656SDarrick J. Wong 1545cde7656SDarrick J. Wong Only choose this option if you know what you are doing. 1555cde7656SDarrick J. Wong 1565cde7656SDarrick J. Wongconfig CRC32_BIT 1575cde7656SDarrick J. Wong bool "Classic Algorithm (one bit at a time)" 1585cde7656SDarrick J. Wong help 1595cde7656SDarrick J. Wong Calculate checksum one bit at a time. This is VERY slow, but has 1605cde7656SDarrick J. Wong no lookup table. This is provided as a debugging option. 1615cde7656SDarrick J. Wong 1625cde7656SDarrick J. Wong Only choose this option if you are debugging crc32. 1635cde7656SDarrick J. Wong 1645cde7656SDarrick J. Wongendchoice 1655cde7656SDarrick J. Wong 166ad241528SJan Nikitenkoconfig CRC7 167ad241528SJan Nikitenko tristate "CRC7 functions" 168ad241528SJan Nikitenko help 169ad241528SJan Nikitenko This option is provided for the case where no in-kernel-tree 170ad241528SJan Nikitenko modules require CRC7 functions, but a module built outside 171ad241528SJan Nikitenko the kernel tree does. Such modules that use library CRC7 172ad241528SJan Nikitenko functions require M here. 173ad241528SJan Nikitenko 1741da177e4SLinus Torvaldsconfig LIBCRC32C 1751da177e4SLinus Torvalds tristate "CRC32c (Castagnoli, et al) Cyclic Redundancy-Check" 17693027354SHerbert Xu select CRYPTO 17769c35efcSHerbert Xu select CRYPTO_CRC32C 1781da177e4SLinus Torvalds help 1791da177e4SLinus Torvalds This option is provided for the case where no in-kernel-tree 1801da177e4SLinus Torvalds modules require CRC32c functions, but a module built outside the 1811da177e4SLinus Torvalds kernel tree does. Such modules that use library CRC32c functions 1821da177e4SLinus Torvalds require M here. See Castagnoli93. 1831da177e4SLinus Torvalds Module will be libcrc32c. 1841da177e4SLinus Torvalds 1857150962dSArend van Sprielconfig CRC8 1867150962dSArend van Spriel tristate "CRC8 function" 1877150962dSArend van Spriel help 1887150962dSArend van Spriel This option provides CRC8 function. Drivers may select this 1897150962dSArend van Spriel when they need to do cyclic redundancy check according CRC8 1907150962dSArend van Spriel algorithm. Module will be called crc8. 1917150962dSArend van Spriel 192e65e1fc2SAl Viroconfig AUDIT_GENERIC 193e65e1fc2SAl Viro bool 194e65e1fc2SAl Viro depends on AUDIT && !AUDIT_ARCH 195e65e1fc2SAl Viro default y 196e65e1fc2SAl Viro 1974b588411SAKASHI Takahiroconfig AUDIT_ARCH_COMPAT_GENERIC 1984b588411SAKASHI Takahiro bool 1994b588411SAKASHI Takahiro default n 2004b588411SAKASHI Takahiro 2014b588411SAKASHI Takahiroconfig AUDIT_COMPAT_GENERIC 2024b588411SAKASHI Takahiro bool 2034b588411SAKASHI Takahiro depends on AUDIT_GENERIC && AUDIT_ARCH_COMPAT_GENERIC && COMPAT 2044b588411SAKASHI Takahiro default y 2054b588411SAKASHI Takahiro 206a6a9c0f1SDaniel Borkmannconfig RANDOM32_SELFTEST 207a6a9c0f1SDaniel Borkmann bool "PRNG perform self test on init" 208a6a9c0f1SDaniel Borkmann default n 209a6a9c0f1SDaniel Borkmann help 210a6a9c0f1SDaniel Borkmann This option enables the 32 bit PRNG library functions to perform a 211a6a9c0f1SDaniel Borkmann self test on initialization. 212a6a9c0f1SDaniel Borkmann 2131da177e4SLinus Torvalds# 2141da177e4SLinus Torvalds# compression support is select'ed if needed 2151da177e4SLinus Torvalds# 216*2da572c9SDan Streetmanconfig 842_COMPRESS 217*2da572c9SDan Streetman tristate 218*2da572c9SDan Streetman 219*2da572c9SDan Streetmanconfig 842_DECOMPRESS 220*2da572c9SDan Streetman tristate 221*2da572c9SDan Streetman 2221da177e4SLinus Torvaldsconfig ZLIB_INFLATE 2231da177e4SLinus Torvalds tristate 2241da177e4SLinus Torvalds 2251da177e4SLinus Torvaldsconfig ZLIB_DEFLATE 2261da177e4SLinus Torvalds tristate 2271da177e4SLinus Torvalds 22864c70b1cSRichard Purdieconfig LZO_COMPRESS 22964c70b1cSRichard Purdie tristate 23064c70b1cSRichard Purdie 23164c70b1cSRichard Purdieconfig LZO_DECOMPRESS 23264c70b1cSRichard Purdie tristate 23364c70b1cSRichard Purdie 234c72ac7a1SChanho Minconfig LZ4_COMPRESS 235c72ac7a1SChanho Min tristate 236c72ac7a1SChanho Min 237c72ac7a1SChanho Minconfig LZ4HC_COMPRESS 238c72ac7a1SChanho Min tristate 239c72ac7a1SChanho Min 240e76e1fdfSKyungsik Leeconfig LZ4_DECOMPRESS 241e76e1fdfSKyungsik Lee tristate 242e76e1fdfSKyungsik Lee 24324fa0402SLasse Collinsource "lib/xz/Kconfig" 24424fa0402SLasse Collin 2451da177e4SLinus Torvalds# 246c8531ab3SH. Peter Anvin# These all provide a common interface (hence the apparent duplication with 247c8531ab3SH. Peter Anvin# ZLIB_INFLATE; DECOMPRESS_GZIP is just a wrapper.) 248c8531ab3SH. Peter Anvin# 249c8531ab3SH. Peter Anvinconfig DECOMPRESS_GZIP 2507856a16eSH. Peter Anvin select ZLIB_INFLATE 251c8531ab3SH. Peter Anvin tristate 252c8531ab3SH. Peter Anvin 253c8531ab3SH. Peter Anvinconfig DECOMPRESS_BZIP2 254c8531ab3SH. Peter Anvin tristate 255c8531ab3SH. Peter Anvin 256c8531ab3SH. Peter Anvinconfig DECOMPRESS_LZMA 257c8531ab3SH. Peter Anvin tristate 258c8531ab3SH. Peter Anvin 2593ebe1243SLasse Collinconfig DECOMPRESS_XZ 2603ebe1243SLasse Collin select XZ_DEC 2613ebe1243SLasse Collin tristate 2623ebe1243SLasse Collin 263cacb246fSAlbin Tonnerreconfig DECOMPRESS_LZO 264cacb246fSAlbin Tonnerre select LZO_DECOMPRESS 265cacb246fSAlbin Tonnerre tristate 266cacb246fSAlbin Tonnerre 267e76e1fdfSKyungsik Leeconfig DECOMPRESS_LZ4 268e76e1fdfSKyungsik Lee select LZ4_DECOMPRESS 269e76e1fdfSKyungsik Lee tristate 270e76e1fdfSKyungsik Lee 271c8531ab3SH. Peter Anvin# 272f14f75b8SJes Sorensen# Generic allocator support is selected if needed 273f14f75b8SJes Sorensen# 274f14f75b8SJes Sorensenconfig GENERIC_ALLOCATOR 2756341e62bSChristoph Jaeger bool 276f14f75b8SJes Sorensen 277f14f75b8SJes Sorensen# 2781da177e4SLinus Torvalds# reed solomon support is select'ed if needed 2791da177e4SLinus Torvalds# 2801da177e4SLinus Torvaldsconfig REED_SOLOMON 2811da177e4SLinus Torvalds tristate 2821da177e4SLinus Torvalds 2831da177e4SLinus Torvaldsconfig REED_SOLOMON_ENC8 2846341e62bSChristoph Jaeger bool 2851da177e4SLinus Torvalds 2861da177e4SLinus Torvaldsconfig REED_SOLOMON_DEC8 2876341e62bSChristoph Jaeger bool 2881da177e4SLinus Torvalds 2891da177e4SLinus Torvaldsconfig REED_SOLOMON_ENC16 2906341e62bSChristoph Jaeger bool 2911da177e4SLinus Torvalds 2921da177e4SLinus Torvaldsconfig REED_SOLOMON_DEC16 2936341e62bSChristoph Jaeger bool 2941da177e4SLinus Torvalds 295f7704347SDavid S. Miller# 296437aa565SIvan Djelic# BCH support is selected if needed 297437aa565SIvan Djelic# 298437aa565SIvan Djelicconfig BCH 299437aa565SIvan Djelic tristate 300437aa565SIvan Djelic 301437aa565SIvan Djelicconfig BCH_CONST_PARAMS 3026341e62bSChristoph Jaeger bool 303437aa565SIvan Djelic help 304437aa565SIvan Djelic Drivers may select this option to force specific constant 305437aa565SIvan Djelic values for parameters 'm' (Galois field order) and 't' 306437aa565SIvan Djelic (error correction capability). Those specific values must 307437aa565SIvan Djelic be set by declaring default values for symbols BCH_CONST_M 308437aa565SIvan Djelic and BCH_CONST_T. 309437aa565SIvan Djelic Doing so will enable extra compiler optimizations, 310437aa565SIvan Djelic improving encoding and decoding performance up to 2x for 311437aa565SIvan Djelic usual (m,t) values (typically such that m*t < 200). 312437aa565SIvan Djelic When this option is selected, the BCH library supports 313437aa565SIvan Djelic only a single (m,t) configuration. This is mainly useful 314437aa565SIvan Djelic for NAND flash board drivers requiring known, fixed BCH 315437aa565SIvan Djelic parameters. 316437aa565SIvan Djelic 317437aa565SIvan Djelicconfig BCH_CONST_M 318437aa565SIvan Djelic int 319437aa565SIvan Djelic range 5 15 320437aa565SIvan Djelic help 321437aa565SIvan Djelic Constant value for Galois field order 'm'. If 'k' is the 322437aa565SIvan Djelic number of data bits to protect, 'm' should be chosen such 323437aa565SIvan Djelic that (k + m*t) <= 2**m - 1. 324437aa565SIvan Djelic Drivers should declare a default value for this symbol if 325437aa565SIvan Djelic they select option BCH_CONST_PARAMS. 326437aa565SIvan Djelic 327437aa565SIvan Djelicconfig BCH_CONST_T 328437aa565SIvan Djelic int 329437aa565SIvan Djelic help 330437aa565SIvan Djelic Constant value for error correction capability in bits 't'. 331437aa565SIvan Djelic Drivers should declare a default value for this symbol if 332437aa565SIvan Djelic they select option BCH_CONST_PARAMS. 333437aa565SIvan Djelic 334437aa565SIvan Djelic# 335f7704347SDavid S. Miller# Textsearch support is select'ed if needed 336f7704347SDavid S. Miller# 3372de4ff7bSThomas Grafconfig TEXTSEARCH 3386341e62bSChristoph Jaeger bool 3391da177e4SLinus Torvalds 340df3fb93aSThomas Grafconfig TEXTSEARCH_KMP 341f7704347SDavid S. Miller tristate 342df3fb93aSThomas Graf 3438082e4edSPablo Neira Ayusoconfig TEXTSEARCH_BM 34429cb9f9cSDavid S. Miller tristate 3458082e4edSPablo Neira Ayuso 3466408f79cSThomas Grafconfig TEXTSEARCH_FSM 347f7704347SDavid S. Miller tristate 3486408f79cSThomas Graf 3495db53f3eSJoern Engelconfig BTREE 3506341e62bSChristoph Jaeger bool 3515db53f3eSJoern Engel 352a88cc108SChris Wilsonconfig INTERVAL_TREE 3536341e62bSChristoph Jaeger bool 354a88cc108SChris Wilson help 355a88cc108SChris Wilson Simple, embeddable, interval-tree. Can find the start of an 356a88cc108SChris Wilson overlapping range in log(n) time and then iterate over all 357a88cc108SChris Wilson overlapping nodes. The algorithm is implemented as an 358a88cc108SChris Wilson augmented rbtree. 359a88cc108SChris Wilson 360a88cc108SChris Wilson See: 361a88cc108SChris Wilson 362a88cc108SChris Wilson Documentation/rbtree.txt 363a88cc108SChris Wilson 364a88cc108SChris Wilson for more information. 365a88cc108SChris Wilson 3663cb98950SDavid Howellsconfig ASSOCIATIVE_ARRAY 3673cb98950SDavid Howells bool 3683cb98950SDavid Howells help 3693cb98950SDavid Howells Generic associative array. Can be searched and iterated over whilst 3703cb98950SDavid Howells it is being modified. It is also reasonably quick to search and 3713cb98950SDavid Howells modify. The algorithms are non-recursive, and the trees are highly 3723cb98950SDavid Howells capacious. 3733cb98950SDavid Howells 3743cb98950SDavid Howells See: 3753cb98950SDavid Howells 3763cb98950SDavid Howells Documentation/assoc_array.txt 3773cb98950SDavid Howells 3783cb98950SDavid Howells for more information. 3793cb98950SDavid Howells 3805ea81769SAl Viroconfig HAS_IOMEM 3816341e62bSChristoph Jaeger bool 3825ea81769SAl Viro depends on !NO_IOMEM 383087fafd1SRichard Weinberger select GENERIC_IO 3845ea81769SAl Viro default y 3855ea81769SAl Viro 386ce816fa8SUwe Kleine-Königconfig HAS_IOPORT_MAP 3876341e62bSChristoph Jaeger bool 388ce816fa8SUwe Kleine-König depends on HAS_IOMEM && !NO_IOPORT_MAP 389ee36c2bfSAl Viro default y 390ee36c2bfSAl Viro 391411f0f3eSHeiko Carstensconfig HAS_DMA 3926341e62bSChristoph Jaeger bool 393411f0f3eSHeiko Carstens depends on !NO_DMA 394411f0f3eSHeiko Carstens default y 395411f0f3eSHeiko Carstens 396928923c7SGeert Uytterhoevenconfig CHECK_SIGNATURE 397928923c7SGeert Uytterhoeven bool 398928923c7SGeert Uytterhoeven 399aab46da0SRusty Russellconfig CPUMASK_OFFSTACK 400aab46da0SRusty Russell bool "Force CPU masks off stack" if DEBUG_PER_CPU_MAPS 401aab46da0SRusty Russell help 402aab46da0SRusty Russell Use dynamic allocation for cpumask_var_t, instead of putting 403aab46da0SRusty Russell them on the stack. This is a bit more expensive, but avoids 404aab46da0SRusty Russell stack overflow. 405aab46da0SRusty Russell 4068c384cdeSRusty Russellconfig DISABLE_OBSOLETE_CPUMASK_FUNCTIONS 4078c384cdeSRusty Russell bool "Disable obsolete cpumask functions" if DEBUG_PER_CPU_MAPS 408525c1f92SKees Cook depends on BROKEN 4098c384cdeSRusty Russell 410c39649c3SBen Hutchingsconfig CPU_RMAP 411c39649c3SBen Hutchings bool 412c39649c3SBen Hutchings depends on SMP 413c39649c3SBen Hutchings 41475957ba3STom Herbertconfig DQL 41575957ba3STom Herbert bool 41675957ba3STom Herbert 417b0125085SGeorge Spelvinconfig GLOB 418b0125085SGeorge Spelvin bool 419b0125085SGeorge Spelvin# This actually supports modular compilation, but the module overhead 420b0125085SGeorge Spelvin# is ridiculous for the amount of code involved. Until an out-of-tree 421b0125085SGeorge Spelvin# driver asks for it, we'll just link it directly it into the kernel 422b0125085SGeorge Spelvin# when required. Since we're ignoring out-of-tree users, there's also 423b0125085SGeorge Spelvin# no need bother prompting for a manual decision: 424b0125085SGeorge Spelvin# prompt "glob_match() function" 425b0125085SGeorge Spelvin help 426b0125085SGeorge Spelvin This option provides a glob_match function for performing 427b0125085SGeorge Spelvin simple text pattern matching. It originated in the ATA code 428b0125085SGeorge Spelvin to blacklist particular drive models, but other device drivers 429b0125085SGeorge Spelvin may need similar functionality. 430b0125085SGeorge Spelvin 431b0125085SGeorge Spelvin All drivers in the Linux kernel tree that require this function 432b0125085SGeorge Spelvin should automatically select this option. Say N unless you 433b0125085SGeorge Spelvin are compiling an out-of tree driver which tells you that it 434b0125085SGeorge Spelvin depends on this. 435b0125085SGeorge Spelvin 4365f9be824SGeorge Spelvinconfig GLOB_SELFTEST 4375f9be824SGeorge Spelvin bool "glob self-test on init" 4385f9be824SGeorge Spelvin default n 4395f9be824SGeorge Spelvin depends on GLOB 4405f9be824SGeorge Spelvin help 4415f9be824SGeorge Spelvin This option enables a simple self-test of the glob_match 4425f9be824SGeorge Spelvin function on startup. It is primarily useful for people 4435f9be824SGeorge Spelvin working on the code to ensure they haven't introduced any 4445f9be824SGeorge Spelvin regressions. 4455f9be824SGeorge Spelvin 4465f9be824SGeorge Spelvin It only adds a little bit of code and slows kernel boot (or 4475f9be824SGeorge Spelvin module load) by a small amount, so you're welcome to play with 4485f9be824SGeorge Spelvin it, but you probably don't need it. 4495f9be824SGeorge Spelvin 450e9cc8bddSGeert Uytterhoeven# 451e9cc8bddSGeert Uytterhoeven# Netlink attribute parsing support is select'ed if needed 452e9cc8bddSGeert Uytterhoeven# 453e9cc8bddSGeert Uytterhoevenconfig NLATTR 454e9cc8bddSGeert Uytterhoeven bool 455e9cc8bddSGeert Uytterhoeven 45609d4e0edSPaul Mackerras# 45709d4e0edSPaul Mackerras# Generic 64-bit atomic support is selected if needed 45809d4e0edSPaul Mackerras# 45909d4e0edSPaul Mackerrasconfig GENERIC_ATOMIC64 46009d4e0edSPaul Mackerras bool 46109d4e0edSPaul Mackerras 4627463449bSCatalin Marinasconfig ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE 4637463449bSCatalin Marinas def_bool y if GENERIC_ATOMIC64 4647463449bSCatalin Marinas 465b411b363SPhilipp Reisnerconfig LRU_CACHE 466b411b363SPhilipp Reisner tristate 467b411b363SPhilipp Reisner 468c5485a7eSBruno Randolfconfig AVERAGE 469a7a9a24dSMichael Buesch bool "Averaging functions" 470a7a9a24dSMichael Buesch help 471a7a9a24dSMichael Buesch This option is provided for the case where no in-kernel-tree 472a7a9a24dSMichael Buesch modules require averaging functions, but a module built outside 473a7a9a24dSMichael Buesch the kernel tree does. Such modules that use library averaging 474a7a9a24dSMichael Buesch functions require Y here. 475a7a9a24dSMichael Buesch 476a7a9a24dSMichael Buesch If unsure, say N. 477c5485a7eSBruno Randolf 478c6df4b17SDavid Millerconfig CLZ_TAB 479c6df4b17SDavid Miller bool 480c6df4b17SDavid Miller 48110f8113eSArend van Sprielconfig CORDIC 482d89ce936SMichael Witten tristate "CORDIC algorithm" 48310f8113eSArend van Spriel help 484435a95c5SMichael Witten This option provides an implementation of the CORDIC algorithm; 485435a95c5SMichael Witten calculations are in fixed point. Module will be called cordic. 48610f8113eSArend van Spriel 4879c1c21a0SAneesh Vconfig DDR 4889c1c21a0SAneesh V bool "JEDEC DDR data" 4899c1c21a0SAneesh V help 4909c1c21a0SAneesh V Data from JEDEC specs for DDR SDRAM memories, 4919c1c21a0SAneesh V particularly the AC timing parameters and addressing 4929c1c21a0SAneesh V information. This data is useful for drivers handling 4939c1c21a0SAneesh V DDR SDRAM controllers. 4949c1c21a0SAneesh V 495d9c46b18SDmitry Kasatkinconfig MPILIB 4962e5f094bSDmitry Kasatkin tristate 497c6df4b17SDavid Miller select CLZ_TAB 498d9c46b18SDmitry Kasatkin help 499d9c46b18SDmitry Kasatkin Multiprecision maths library from GnuPG. 500d9c46b18SDmitry Kasatkin It is used to implement RSA digital signature verification, 501d9c46b18SDmitry Kasatkin which is used by IMA/EVM digital signature extension. 502d9c46b18SDmitry Kasatkin 5035e8898e9SDmitry Kasatkinconfig SIGNATURE 5042e5f094bSDmitry Kasatkin tristate 5050d1f64f6SDmitry Kasatkin depends on KEYS 5060d1f64f6SDmitry Kasatkin select CRYPTO 507be440ec7SDmitry Kasatkin select CRYPTO_SHA1 508051dbb91SDmitry Kasatkin select MPILIB 509051dbb91SDmitry Kasatkin help 510051dbb91SDmitry Kasatkin Digital signature verification. Currently only RSA is supported. 511051dbb91SDmitry Kasatkin Implementation is done using GnuPG MPI library 512051dbb91SDmitry Kasatkin 513ab253839SDavid Daney# 514ab253839SDavid Daney# libfdt files, only selected if needed. 515ab253839SDavid Daney# 516ab253839SDavid Daneyconfig LIBFDT 517ab253839SDavid Daney bool 518ab253839SDavid Daney 519a77ad6eaSDavid Howellsconfig OID_REGISTRY 520a77ad6eaSDavid Howells tristate 521a77ad6eaSDavid Howells help 522a77ad6eaSDavid Howells Enable fast lookup object identifier registry. 523a77ad6eaSDavid Howells 5240635eb8aSMatthew Garrettconfig UCS2_STRING 5250635eb8aSMatthew Garrett tristate 5260635eb8aSMatthew Garrett 527ee89bd6bSGeert Uytterhoevensource "lib/fonts/Kconfig" 528ee89bd6bSGeert Uytterhoeven 529308c09f1SLaura Abbott# 530308c09f1SLaura Abbott# sg chaining option 531308c09f1SLaura Abbott# 532308c09f1SLaura Abbott 533308c09f1SLaura Abbottconfig ARCH_HAS_SG_CHAIN 534308c09f1SLaura Abbott def_bool n 535308c09f1SLaura Abbott 5362de4ff7bSThomas Grafendmenu 537