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 5622b361d1SOleg Nesterovconfig PERCPU_RWSEM 576341e62bSChristoph Jaeger bool 5822b361d1SOleg Nesterov 59bc08b449SLinus Torvaldsconfig ARCH_USE_CMPXCHG_LOCKREF 60bc08b449SLinus Torvalds bool 61bc08b449SLinus Torvalds 6272d93104SLinus Torvaldsconfig ARCH_HAS_FAST_MULTIPLIER 6372d93104SLinus Torvalds bool 6472d93104SLinus Torvalds 651da177e4SLinus Torvaldsconfig CRC_CCITT 661da177e4SLinus Torvalds tristate "CRC-CCITT functions" 671da177e4SLinus Torvalds help 681da177e4SLinus Torvalds This option is provided for the case where no in-kernel-tree 691da177e4SLinus Torvalds modules require CRC-CCITT functions, but a module built outside 701da177e4SLinus Torvalds the kernel tree does. Such modules that use library CRC-CCITT 711da177e4SLinus Torvalds functions require M here. 721da177e4SLinus Torvalds 737657ec1fSEvgeniy Polyakovconfig CRC16 747657ec1fSEvgeniy Polyakov tristate "CRC16 functions" 757657ec1fSEvgeniy Polyakov help 767657ec1fSEvgeniy Polyakov This option is provided for the case where no in-kernel-tree 777657ec1fSEvgeniy Polyakov modules require CRC16 functions, but a module built outside 787657ec1fSEvgeniy Polyakov the kernel tree does. Such modules that use library CRC16 797657ec1fSEvgeniy Polyakov functions require M here. 807657ec1fSEvgeniy Polyakov 81f11f594eSMartin K. Petersenconfig CRC_T10DIF 82f11f594eSMartin K. Petersen tristate "CRC calculation for the T10 Data Integrity Field" 8368411521SHerbert Xu select CRYPTO 8468411521SHerbert Xu select CRYPTO_CRCT10DIF 85f11f594eSMartin K. Petersen help 86f11f594eSMartin K. Petersen This option is only needed if a module that's not in the 87f11f594eSMartin K. Petersen kernel tree needs to calculate CRC checks for use with the 88f11f594eSMartin K. Petersen SCSI data integrity subsystem. 89f11f594eSMartin K. Petersen 903e7cbae7SIvo van Doornconfig CRC_ITU_T 913e7cbae7SIvo van Doorn tristate "CRC ITU-T V.41 functions" 923e7cbae7SIvo van Doorn help 933e7cbae7SIvo van Doorn This option is provided for the case where no in-kernel-tree 943e7cbae7SIvo van Doorn modules require CRC ITU-T V.41 functions, but a module built outside 953e7cbae7SIvo van Doorn the kernel tree does. Such modules that use library CRC ITU-T V.41 963e7cbae7SIvo van Doorn functions require M here. 973e7cbae7SIvo van Doorn 981da177e4SLinus Torvaldsconfig CRC32 9946c5801eSDarrick J. Wong tristate "CRC32/CRC32c functions" 1001da177e4SLinus Torvalds default y 101906d66dfSAkinobu Mita select BITREVERSE 1021da177e4SLinus Torvalds help 1031da177e4SLinus Torvalds This option is provided for the case where no in-kernel-tree 10446c5801eSDarrick J. Wong modules require CRC32/CRC32c functions, but a module built outside 10546c5801eSDarrick J. Wong the kernel tree does. Such modules that use library CRC32/CRC32c 10646c5801eSDarrick J. Wong functions require M here. 1071da177e4SLinus Torvalds 1083863ef31SBob Pearsonconfig CRC32_SELFTEST 1093863ef31SBob Pearson bool "CRC32 perform self test on init" 1103863ef31SBob Pearson default n 1113863ef31SBob Pearson depends on CRC32 1123863ef31SBob Pearson help 1133863ef31SBob Pearson This option enables the CRC32 library functions to perform a 1143863ef31SBob Pearson self test on initialization. The self test computes crc32_le 1153863ef31SBob Pearson and crc32_be over byte strings with random alignment and length 1163863ef31SBob Pearson and computes the total elapsed time and number of bytes processed. 1173863ef31SBob Pearson 1185cde7656SDarrick J. Wongchoice 1195cde7656SDarrick J. Wong prompt "CRC32 implementation" 1205cde7656SDarrick J. Wong depends on CRC32 1215cde7656SDarrick J. Wong default CRC32_SLICEBY8 12282edb4baSDarrick J. Wong help 12382edb4baSDarrick J. Wong This option allows a kernel builder to override the default choice 12482edb4baSDarrick J. Wong of CRC32 algorithm. Choose the default ("slice by 8") unless you 12582edb4baSDarrick J. Wong know that you need one of the others. 1265cde7656SDarrick J. Wong 1275cde7656SDarrick J. Wongconfig CRC32_SLICEBY8 1285cde7656SDarrick J. Wong bool "Slice by 8 bytes" 1295cde7656SDarrick J. Wong help 1305cde7656SDarrick J. Wong Calculate checksum 8 bytes at a time with a clever slicing algorithm. 1315cde7656SDarrick J. Wong This is the fastest algorithm, but comes with a 8KiB lookup table. 1325cde7656SDarrick J. Wong Most modern processors have enough cache to hold this table without 1335cde7656SDarrick J. Wong thrashing the cache. 1345cde7656SDarrick J. Wong 1355cde7656SDarrick J. Wong This is the default implementation choice. Choose this one unless 1365cde7656SDarrick J. Wong you have a good reason not to. 1375cde7656SDarrick J. Wong 1385cde7656SDarrick J. Wongconfig CRC32_SLICEBY4 1395cde7656SDarrick J. Wong bool "Slice by 4 bytes" 1405cde7656SDarrick J. Wong help 1415cde7656SDarrick J. Wong Calculate checksum 4 bytes at a time with a clever slicing algorithm. 1425cde7656SDarrick J. Wong This is a bit slower than slice by 8, but has a smaller 4KiB lookup 1435cde7656SDarrick J. Wong table. 1445cde7656SDarrick J. Wong 1455cde7656SDarrick J. Wong Only choose this option if you know what you are doing. 1465cde7656SDarrick J. Wong 1475cde7656SDarrick J. Wongconfig CRC32_SARWATE 1485cde7656SDarrick J. Wong bool "Sarwate's Algorithm (one byte at a time)" 1495cde7656SDarrick J. Wong help 1505cde7656SDarrick J. Wong Calculate checksum a byte at a time using Sarwate's algorithm. This 1515cde7656SDarrick J. Wong is not particularly fast, but has a small 256 byte lookup table. 1525cde7656SDarrick J. Wong 1535cde7656SDarrick J. Wong Only choose this option if you know what you are doing. 1545cde7656SDarrick J. Wong 1555cde7656SDarrick J. Wongconfig CRC32_BIT 1565cde7656SDarrick J. Wong bool "Classic Algorithm (one bit at a time)" 1575cde7656SDarrick J. Wong help 1585cde7656SDarrick J. Wong Calculate checksum one bit at a time. This is VERY slow, but has 1595cde7656SDarrick J. Wong no lookup table. This is provided as a debugging option. 1605cde7656SDarrick J. Wong 1615cde7656SDarrick J. Wong Only choose this option if you are debugging crc32. 1625cde7656SDarrick J. Wong 1635cde7656SDarrick J. Wongendchoice 1645cde7656SDarrick J. Wong 165ad241528SJan Nikitenkoconfig CRC7 166ad241528SJan Nikitenko tristate "CRC7 functions" 167ad241528SJan Nikitenko help 168ad241528SJan Nikitenko This option is provided for the case where no in-kernel-tree 169ad241528SJan Nikitenko modules require CRC7 functions, but a module built outside 170ad241528SJan Nikitenko the kernel tree does. Such modules that use library CRC7 171ad241528SJan Nikitenko functions require M here. 172ad241528SJan Nikitenko 1731da177e4SLinus Torvaldsconfig LIBCRC32C 1741da177e4SLinus Torvalds tristate "CRC32c (Castagnoli, et al) Cyclic Redundancy-Check" 17593027354SHerbert Xu select CRYPTO 17669c35efcSHerbert Xu select CRYPTO_CRC32C 1771da177e4SLinus Torvalds help 1781da177e4SLinus Torvalds This option is provided for the case where no in-kernel-tree 1791da177e4SLinus Torvalds modules require CRC32c functions, but a module built outside the 1801da177e4SLinus Torvalds kernel tree does. Such modules that use library CRC32c functions 1811da177e4SLinus Torvalds require M here. See Castagnoli93. 1821da177e4SLinus Torvalds Module will be libcrc32c. 1831da177e4SLinus Torvalds 1847150962dSArend van Sprielconfig CRC8 1857150962dSArend van Spriel tristate "CRC8 function" 1867150962dSArend van Spriel help 1877150962dSArend van Spriel This option provides CRC8 function. Drivers may select this 1887150962dSArend van Spriel when they need to do cyclic redundancy check according CRC8 1897150962dSArend van Spriel algorithm. Module will be called crc8. 1907150962dSArend van Spriel 191e65e1fc2SAl Viroconfig AUDIT_GENERIC 192e65e1fc2SAl Viro bool 193e65e1fc2SAl Viro depends on AUDIT && !AUDIT_ARCH 194e65e1fc2SAl Viro default y 195e65e1fc2SAl Viro 1964b588411SAKASHI Takahiroconfig AUDIT_ARCH_COMPAT_GENERIC 1974b588411SAKASHI Takahiro bool 1984b588411SAKASHI Takahiro default n 1994b588411SAKASHI Takahiro 2004b588411SAKASHI Takahiroconfig AUDIT_COMPAT_GENERIC 2014b588411SAKASHI Takahiro bool 2024b588411SAKASHI Takahiro depends on AUDIT_GENERIC && AUDIT_ARCH_COMPAT_GENERIC && COMPAT 2034b588411SAKASHI Takahiro default y 2044b588411SAKASHI Takahiro 205a6a9c0f1SDaniel Borkmannconfig RANDOM32_SELFTEST 206a6a9c0f1SDaniel Borkmann bool "PRNG perform self test on init" 207a6a9c0f1SDaniel Borkmann default n 208a6a9c0f1SDaniel Borkmann help 209a6a9c0f1SDaniel Borkmann This option enables the 32 bit PRNG library functions to perform a 210a6a9c0f1SDaniel Borkmann self test on initialization. 211a6a9c0f1SDaniel Borkmann 2121da177e4SLinus Torvalds# 2131da177e4SLinus Torvalds# compression support is select'ed if needed 2141da177e4SLinus Torvalds# 2152da572c9SDan Streetmanconfig 842_COMPRESS 2162da572c9SDan Streetman tristate 2172da572c9SDan Streetman 2182da572c9SDan Streetmanconfig 842_DECOMPRESS 2192da572c9SDan Streetman tristate 2202da572c9SDan Streetman 2211da177e4SLinus Torvaldsconfig ZLIB_INFLATE 2221da177e4SLinus Torvalds tristate 2231da177e4SLinus Torvalds 2241da177e4SLinus Torvaldsconfig ZLIB_DEFLATE 2251da177e4SLinus Torvalds tristate 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 3653cb98950SDavid Howellsconfig ASSOCIATIVE_ARRAY 3663cb98950SDavid Howells bool 3673cb98950SDavid Howells help 3683cb98950SDavid Howells Generic associative array. Can be searched and iterated over whilst 3693cb98950SDavid Howells it is being modified. It is also reasonably quick to search and 3703cb98950SDavid Howells modify. The algorithms are non-recursive, and the trees are highly 3713cb98950SDavid Howells capacious. 3723cb98950SDavid Howells 3733cb98950SDavid Howells See: 3743cb98950SDavid Howells 3753cb98950SDavid Howells Documentation/assoc_array.txt 3763cb98950SDavid Howells 3773cb98950SDavid Howells for more information. 3783cb98950SDavid Howells 3795ea81769SAl Viroconfig HAS_IOMEM 3806341e62bSChristoph Jaeger bool 3815ea81769SAl Viro depends on !NO_IOMEM 382087fafd1SRichard Weinberger select GENERIC_IO 3835ea81769SAl Viro default y 3845ea81769SAl Viro 385ce816fa8SUwe Kleine-Königconfig HAS_IOPORT_MAP 3866341e62bSChristoph Jaeger bool 387ce816fa8SUwe Kleine-König depends on HAS_IOMEM && !NO_IOPORT_MAP 388ee36c2bfSAl Viro default y 389ee36c2bfSAl Viro 390411f0f3eSHeiko Carstensconfig HAS_DMA 3916341e62bSChristoph Jaeger bool 392411f0f3eSHeiko Carstens depends on !NO_DMA 393411f0f3eSHeiko Carstens default y 394411f0f3eSHeiko Carstens 395928923c7SGeert Uytterhoevenconfig CHECK_SIGNATURE 396928923c7SGeert Uytterhoeven bool 397928923c7SGeert Uytterhoeven 398aab46da0SRusty Russellconfig CPUMASK_OFFSTACK 399aab46da0SRusty Russell bool "Force CPU masks off stack" if DEBUG_PER_CPU_MAPS 400aab46da0SRusty Russell help 401aab46da0SRusty Russell Use dynamic allocation for cpumask_var_t, instead of putting 402aab46da0SRusty Russell them on the stack. This is a bit more expensive, but avoids 403aab46da0SRusty Russell stack overflow. 404aab46da0SRusty Russell 405c39649c3SBen Hutchingsconfig CPU_RMAP 406c39649c3SBen Hutchings bool 407c39649c3SBen Hutchings depends on SMP 408c39649c3SBen Hutchings 40975957ba3STom Herbertconfig DQL 41075957ba3STom Herbert bool 41175957ba3STom Herbert 412b0125085SGeorge Spelvinconfig GLOB 413b0125085SGeorge Spelvin bool 414b0125085SGeorge Spelvin# This actually supports modular compilation, but the module overhead 415b0125085SGeorge Spelvin# is ridiculous for the amount of code involved. Until an out-of-tree 416b0125085SGeorge Spelvin# driver asks for it, we'll just link it directly it into the kernel 417b0125085SGeorge Spelvin# when required. Since we're ignoring out-of-tree users, there's also 418b0125085SGeorge Spelvin# no need bother prompting for a manual decision: 419b0125085SGeorge Spelvin# prompt "glob_match() function" 420b0125085SGeorge Spelvin help 421b0125085SGeorge Spelvin This option provides a glob_match function for performing 422b0125085SGeorge Spelvin simple text pattern matching. It originated in the ATA code 423b0125085SGeorge Spelvin to blacklist particular drive models, but other device drivers 424b0125085SGeorge Spelvin may need similar functionality. 425b0125085SGeorge Spelvin 426b0125085SGeorge Spelvin All drivers in the Linux kernel tree that require this function 427b0125085SGeorge Spelvin should automatically select this option. Say N unless you 428b0125085SGeorge Spelvin are compiling an out-of tree driver which tells you that it 429b0125085SGeorge Spelvin depends on this. 430b0125085SGeorge Spelvin 4315f9be824SGeorge Spelvinconfig GLOB_SELFTEST 4325f9be824SGeorge Spelvin bool "glob self-test on init" 4335f9be824SGeorge Spelvin default n 4345f9be824SGeorge Spelvin depends on GLOB 4355f9be824SGeorge Spelvin help 4365f9be824SGeorge Spelvin This option enables a simple self-test of the glob_match 4375f9be824SGeorge Spelvin function on startup. It is primarily useful for people 4385f9be824SGeorge Spelvin working on the code to ensure they haven't introduced any 4395f9be824SGeorge Spelvin regressions. 4405f9be824SGeorge Spelvin 4415f9be824SGeorge Spelvin It only adds a little bit of code and slows kernel boot (or 4425f9be824SGeorge Spelvin module load) by a small amount, so you're welcome to play with 4435f9be824SGeorge Spelvin it, but you probably don't need it. 4445f9be824SGeorge Spelvin 445e9cc8bddSGeert Uytterhoeven# 446e9cc8bddSGeert Uytterhoeven# Netlink attribute parsing support is select'ed if needed 447e9cc8bddSGeert Uytterhoeven# 448e9cc8bddSGeert Uytterhoevenconfig NLATTR 449e9cc8bddSGeert Uytterhoeven bool 450e9cc8bddSGeert Uytterhoeven 45109d4e0edSPaul Mackerras# 45209d4e0edSPaul Mackerras# Generic 64-bit atomic support is selected if needed 45309d4e0edSPaul Mackerras# 45409d4e0edSPaul Mackerrasconfig GENERIC_ATOMIC64 45509d4e0edSPaul Mackerras bool 45609d4e0edSPaul Mackerras 4577463449bSCatalin Marinasconfig ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE 4587463449bSCatalin Marinas def_bool y if GENERIC_ATOMIC64 4597463449bSCatalin Marinas 460b411b363SPhilipp Reisnerconfig LRU_CACHE 461b411b363SPhilipp Reisner tristate 462b411b363SPhilipp Reisner 463c5485a7eSBruno Randolfconfig AVERAGE 464a7a9a24dSMichael Buesch bool "Averaging functions" 465a7a9a24dSMichael Buesch help 466a7a9a24dSMichael Buesch This option is provided for the case where no in-kernel-tree 467a7a9a24dSMichael Buesch modules require averaging functions, but a module built outside 468a7a9a24dSMichael Buesch the kernel tree does. Such modules that use library averaging 469a7a9a24dSMichael Buesch functions require Y here. 470a7a9a24dSMichael Buesch 471a7a9a24dSMichael Buesch If unsure, say N. 472c5485a7eSBruno Randolf 473c6df4b17SDavid Millerconfig CLZ_TAB 474c6df4b17SDavid Miller bool 475c6df4b17SDavid Miller 47610f8113eSArend van Sprielconfig CORDIC 477d89ce936SMichael Witten tristate "CORDIC algorithm" 47810f8113eSArend van Spriel help 479435a95c5SMichael Witten This option provides an implementation of the CORDIC algorithm; 480435a95c5SMichael Witten calculations are in fixed point. Module will be called cordic. 48110f8113eSArend van Spriel 4829c1c21a0SAneesh Vconfig DDR 4839c1c21a0SAneesh V bool "JEDEC DDR data" 4849c1c21a0SAneesh V help 4859c1c21a0SAneesh V Data from JEDEC specs for DDR SDRAM memories, 4869c1c21a0SAneesh V particularly the AC timing parameters and addressing 4879c1c21a0SAneesh V information. This data is useful for drivers handling 4889c1c21a0SAneesh V DDR SDRAM controllers. 4899c1c21a0SAneesh V 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 524*f8bcbe62SRobert Jarzmikconfig SG_SPLIT 525*f8bcbe62SRobert Jarzmik def_bool n 526*f8bcbe62SRobert Jarzmik help 527*f8bcbe62SRobert Jarzmik Provides a heler to split scatterlists into chunks, each chunk being a 528*f8bcbe62SRobert Jarzmik scatterlist. This should be selected by a driver or an API which 529*f8bcbe62SRobert Jarzmik whishes to split a scatterlist amongst multiple DMA channel. 530*f8bcbe62SRobert Jarzmik 531308c09f1SLaura Abbott# 532308c09f1SLaura Abbott# sg chaining option 533308c09f1SLaura Abbott# 534308c09f1SLaura Abbott 535308c09f1SLaura Abbottconfig ARCH_HAS_SG_CHAIN 536308c09f1SLaura Abbott def_bool n 537308c09f1SLaura Abbott 53861031952SRoss Zwislerconfig ARCH_HAS_PMEM_API 53961031952SRoss Zwisler bool 54061031952SRoss Zwisler 5412de4ff7bSThomas Grafendmenu 542