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# 2151da177e4SLinus Torvaldsconfig ZLIB_INFLATE 2161da177e4SLinus Torvalds tristate 2171da177e4SLinus Torvalds 2181da177e4SLinus Torvaldsconfig ZLIB_DEFLATE 2191da177e4SLinus Torvalds tristate 2201da177e4SLinus Torvalds 22164c70b1cSRichard Purdieconfig LZO_COMPRESS 22264c70b1cSRichard Purdie tristate 22364c70b1cSRichard Purdie 22464c70b1cSRichard Purdieconfig LZO_DECOMPRESS 22564c70b1cSRichard Purdie tristate 22664c70b1cSRichard Purdie 227c72ac7a1SChanho Minconfig LZ4_COMPRESS 228c72ac7a1SChanho Min tristate 229c72ac7a1SChanho Min 230c72ac7a1SChanho Minconfig LZ4HC_COMPRESS 231c72ac7a1SChanho Min tristate 232c72ac7a1SChanho Min 233e76e1fdfSKyungsik Leeconfig LZ4_DECOMPRESS 234e76e1fdfSKyungsik Lee tristate 235e76e1fdfSKyungsik Lee 23624fa0402SLasse Collinsource "lib/xz/Kconfig" 23724fa0402SLasse Collin 2381da177e4SLinus Torvalds# 239c8531ab3SH. Peter Anvin# These all provide a common interface (hence the apparent duplication with 240c8531ab3SH. Peter Anvin# ZLIB_INFLATE; DECOMPRESS_GZIP is just a wrapper.) 241c8531ab3SH. Peter Anvin# 242c8531ab3SH. Peter Anvinconfig DECOMPRESS_GZIP 2437856a16eSH. Peter Anvin select ZLIB_INFLATE 244c8531ab3SH. Peter Anvin tristate 245c8531ab3SH. Peter Anvin 246c8531ab3SH. Peter Anvinconfig DECOMPRESS_BZIP2 247c8531ab3SH. Peter Anvin tristate 248c8531ab3SH. Peter Anvin 249c8531ab3SH. Peter Anvinconfig DECOMPRESS_LZMA 250c8531ab3SH. Peter Anvin tristate 251c8531ab3SH. Peter Anvin 2523ebe1243SLasse Collinconfig DECOMPRESS_XZ 2533ebe1243SLasse Collin select XZ_DEC 2543ebe1243SLasse Collin tristate 2553ebe1243SLasse Collin 256cacb246fSAlbin Tonnerreconfig DECOMPRESS_LZO 257cacb246fSAlbin Tonnerre select LZO_DECOMPRESS 258cacb246fSAlbin Tonnerre tristate 259cacb246fSAlbin Tonnerre 260e76e1fdfSKyungsik Leeconfig DECOMPRESS_LZ4 261e76e1fdfSKyungsik Lee select LZ4_DECOMPRESS 262e76e1fdfSKyungsik Lee tristate 263e76e1fdfSKyungsik Lee 264c8531ab3SH. Peter Anvin# 265f14f75b8SJes Sorensen# Generic allocator support is selected if needed 266f14f75b8SJes Sorensen# 267f14f75b8SJes Sorensenconfig GENERIC_ALLOCATOR 2686341e62bSChristoph Jaeger bool 269f14f75b8SJes Sorensen 270f14f75b8SJes Sorensen# 2711da177e4SLinus Torvalds# reed solomon support is select'ed if needed 2721da177e4SLinus Torvalds# 2731da177e4SLinus Torvaldsconfig REED_SOLOMON 2741da177e4SLinus Torvalds tristate 2751da177e4SLinus Torvalds 2761da177e4SLinus Torvaldsconfig REED_SOLOMON_ENC8 2776341e62bSChristoph Jaeger bool 2781da177e4SLinus Torvalds 2791da177e4SLinus Torvaldsconfig REED_SOLOMON_DEC8 2806341e62bSChristoph Jaeger bool 2811da177e4SLinus Torvalds 2821da177e4SLinus Torvaldsconfig REED_SOLOMON_ENC16 2836341e62bSChristoph Jaeger bool 2841da177e4SLinus Torvalds 2851da177e4SLinus Torvaldsconfig REED_SOLOMON_DEC16 2866341e62bSChristoph Jaeger bool 2871da177e4SLinus Torvalds 288f7704347SDavid S. Miller# 289437aa565SIvan Djelic# BCH support is selected if needed 290437aa565SIvan Djelic# 291437aa565SIvan Djelicconfig BCH 292437aa565SIvan Djelic tristate 293437aa565SIvan Djelic 294437aa565SIvan Djelicconfig BCH_CONST_PARAMS 2956341e62bSChristoph Jaeger bool 296437aa565SIvan Djelic help 297437aa565SIvan Djelic Drivers may select this option to force specific constant 298437aa565SIvan Djelic values for parameters 'm' (Galois field order) and 't' 299437aa565SIvan Djelic (error correction capability). Those specific values must 300437aa565SIvan Djelic be set by declaring default values for symbols BCH_CONST_M 301437aa565SIvan Djelic and BCH_CONST_T. 302437aa565SIvan Djelic Doing so will enable extra compiler optimizations, 303437aa565SIvan Djelic improving encoding and decoding performance up to 2x for 304437aa565SIvan Djelic usual (m,t) values (typically such that m*t < 200). 305437aa565SIvan Djelic When this option is selected, the BCH library supports 306437aa565SIvan Djelic only a single (m,t) configuration. This is mainly useful 307437aa565SIvan Djelic for NAND flash board drivers requiring known, fixed BCH 308437aa565SIvan Djelic parameters. 309437aa565SIvan Djelic 310437aa565SIvan Djelicconfig BCH_CONST_M 311437aa565SIvan Djelic int 312437aa565SIvan Djelic range 5 15 313437aa565SIvan Djelic help 314437aa565SIvan Djelic Constant value for Galois field order 'm'. If 'k' is the 315437aa565SIvan Djelic number of data bits to protect, 'm' should be chosen such 316437aa565SIvan Djelic that (k + m*t) <= 2**m - 1. 317437aa565SIvan Djelic Drivers should declare a default value for this symbol if 318437aa565SIvan Djelic they select option BCH_CONST_PARAMS. 319437aa565SIvan Djelic 320437aa565SIvan Djelicconfig BCH_CONST_T 321437aa565SIvan Djelic int 322437aa565SIvan Djelic help 323437aa565SIvan Djelic Constant value for error correction capability in bits 't'. 324437aa565SIvan Djelic Drivers should declare a default value for this symbol if 325437aa565SIvan Djelic they select option BCH_CONST_PARAMS. 326437aa565SIvan Djelic 327437aa565SIvan Djelic# 328f7704347SDavid S. Miller# Textsearch support is select'ed if needed 329f7704347SDavid S. Miller# 3302de4ff7bSThomas Grafconfig TEXTSEARCH 3316341e62bSChristoph Jaeger bool 3321da177e4SLinus Torvalds 333df3fb93aSThomas Grafconfig TEXTSEARCH_KMP 334f7704347SDavid S. Miller tristate 335df3fb93aSThomas Graf 3368082e4edSPablo Neira Ayusoconfig TEXTSEARCH_BM 33729cb9f9cSDavid S. Miller tristate 3388082e4edSPablo Neira Ayuso 3396408f79cSThomas Grafconfig TEXTSEARCH_FSM 340f7704347SDavid S. Miller tristate 3416408f79cSThomas Graf 3425db53f3eSJoern Engelconfig BTREE 3436341e62bSChristoph Jaeger bool 3445db53f3eSJoern Engel 345a88cc108SChris Wilsonconfig INTERVAL_TREE 3466341e62bSChristoph Jaeger bool 347a88cc108SChris Wilson help 348a88cc108SChris Wilson Simple, embeddable, interval-tree. Can find the start of an 349a88cc108SChris Wilson overlapping range in log(n) time and then iterate over all 350a88cc108SChris Wilson overlapping nodes. The algorithm is implemented as an 351a88cc108SChris Wilson augmented rbtree. 352a88cc108SChris Wilson 353a88cc108SChris Wilson See: 354a88cc108SChris Wilson 355a88cc108SChris Wilson Documentation/rbtree.txt 356a88cc108SChris Wilson 357a88cc108SChris Wilson for more information. 358a88cc108SChris Wilson 3593cb98950SDavid Howellsconfig ASSOCIATIVE_ARRAY 3603cb98950SDavid Howells bool 3613cb98950SDavid Howells help 3623cb98950SDavid Howells Generic associative array. Can be searched and iterated over whilst 3633cb98950SDavid Howells it is being modified. It is also reasonably quick to search and 3643cb98950SDavid Howells modify. The algorithms are non-recursive, and the trees are highly 3653cb98950SDavid Howells capacious. 3663cb98950SDavid Howells 3673cb98950SDavid Howells See: 3683cb98950SDavid Howells 3693cb98950SDavid Howells Documentation/assoc_array.txt 3703cb98950SDavid Howells 3713cb98950SDavid Howells for more information. 3723cb98950SDavid Howells 3735ea81769SAl Viroconfig HAS_IOMEM 3746341e62bSChristoph Jaeger bool 3755ea81769SAl Viro depends on !NO_IOMEM 376087fafd1SRichard Weinberger select GENERIC_IO 3775ea81769SAl Viro default y 3785ea81769SAl Viro 379ce816fa8SUwe Kleine-Königconfig HAS_IOPORT_MAP 3806341e62bSChristoph Jaeger bool 381ce816fa8SUwe Kleine-König depends on HAS_IOMEM && !NO_IOPORT_MAP 382ee36c2bfSAl Viro default y 383ee36c2bfSAl Viro 384411f0f3eSHeiko Carstensconfig HAS_DMA 3856341e62bSChristoph Jaeger bool 386411f0f3eSHeiko Carstens depends on !NO_DMA 387411f0f3eSHeiko Carstens default y 388411f0f3eSHeiko Carstens 389928923c7SGeert Uytterhoevenconfig CHECK_SIGNATURE 390928923c7SGeert Uytterhoeven bool 391928923c7SGeert Uytterhoeven 392aab46da0SRusty Russellconfig CPUMASK_OFFSTACK 393aab46da0SRusty Russell bool "Force CPU masks off stack" if DEBUG_PER_CPU_MAPS 394aab46da0SRusty Russell help 395aab46da0SRusty Russell Use dynamic allocation for cpumask_var_t, instead of putting 396aab46da0SRusty Russell them on the stack. This is a bit more expensive, but avoids 397aab46da0SRusty Russell stack overflow. 398aab46da0SRusty Russell 399c39649c3SBen Hutchingsconfig CPU_RMAP 400c39649c3SBen Hutchings bool 401c39649c3SBen Hutchings depends on SMP 402c39649c3SBen Hutchings 40375957ba3STom Herbertconfig DQL 40475957ba3STom Herbert bool 40575957ba3STom Herbert 406b0125085SGeorge Spelvinconfig GLOB 407b0125085SGeorge Spelvin bool 408b0125085SGeorge Spelvin# This actually supports modular compilation, but the module overhead 409b0125085SGeorge Spelvin# is ridiculous for the amount of code involved. Until an out-of-tree 410b0125085SGeorge Spelvin# driver asks for it, we'll just link it directly it into the kernel 411b0125085SGeorge Spelvin# when required. Since we're ignoring out-of-tree users, there's also 412b0125085SGeorge Spelvin# no need bother prompting for a manual decision: 413b0125085SGeorge Spelvin# prompt "glob_match() function" 414b0125085SGeorge Spelvin help 415b0125085SGeorge Spelvin This option provides a glob_match function for performing 416b0125085SGeorge Spelvin simple text pattern matching. It originated in the ATA code 417b0125085SGeorge Spelvin to blacklist particular drive models, but other device drivers 418b0125085SGeorge Spelvin may need similar functionality. 419b0125085SGeorge Spelvin 420b0125085SGeorge Spelvin All drivers in the Linux kernel tree that require this function 421b0125085SGeorge Spelvin should automatically select this option. Say N unless you 422b0125085SGeorge Spelvin are compiling an out-of tree driver which tells you that it 423b0125085SGeorge Spelvin depends on this. 424b0125085SGeorge Spelvin 4255f9be824SGeorge Spelvinconfig GLOB_SELFTEST 4265f9be824SGeorge Spelvin bool "glob self-test on init" 4275f9be824SGeorge Spelvin default n 4285f9be824SGeorge Spelvin depends on GLOB 4295f9be824SGeorge Spelvin help 4305f9be824SGeorge Spelvin This option enables a simple self-test of the glob_match 4315f9be824SGeorge Spelvin function on startup. It is primarily useful for people 4325f9be824SGeorge Spelvin working on the code to ensure they haven't introduced any 4335f9be824SGeorge Spelvin regressions. 4345f9be824SGeorge Spelvin 4355f9be824SGeorge Spelvin It only adds a little bit of code and slows kernel boot (or 4365f9be824SGeorge Spelvin module load) by a small amount, so you're welcome to play with 4375f9be824SGeorge Spelvin it, but you probably don't need it. 4385f9be824SGeorge Spelvin 439e9cc8bddSGeert Uytterhoeven# 440e9cc8bddSGeert Uytterhoeven# Netlink attribute parsing support is select'ed if needed 441e9cc8bddSGeert Uytterhoeven# 442e9cc8bddSGeert Uytterhoevenconfig NLATTR 443e9cc8bddSGeert Uytterhoeven bool 444e9cc8bddSGeert Uytterhoeven 44509d4e0edSPaul Mackerras# 44609d4e0edSPaul Mackerras# Generic 64-bit atomic support is selected if needed 44709d4e0edSPaul Mackerras# 44809d4e0edSPaul Mackerrasconfig GENERIC_ATOMIC64 44909d4e0edSPaul Mackerras bool 45009d4e0edSPaul Mackerras 4517463449bSCatalin Marinasconfig ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE 4527463449bSCatalin Marinas def_bool y if GENERIC_ATOMIC64 4537463449bSCatalin Marinas 454b411b363SPhilipp Reisnerconfig LRU_CACHE 455b411b363SPhilipp Reisner tristate 456b411b363SPhilipp Reisner 457c5485a7eSBruno Randolfconfig AVERAGE 458a7a9a24dSMichael Buesch bool "Averaging functions" 459a7a9a24dSMichael Buesch help 460a7a9a24dSMichael Buesch This option is provided for the case where no in-kernel-tree 461a7a9a24dSMichael Buesch modules require averaging functions, but a module built outside 462a7a9a24dSMichael Buesch the kernel tree does. Such modules that use library averaging 463a7a9a24dSMichael Buesch functions require Y here. 464a7a9a24dSMichael Buesch 465a7a9a24dSMichael Buesch If unsure, say N. 466c5485a7eSBruno Randolf 467c6df4b17SDavid Millerconfig CLZ_TAB 468c6df4b17SDavid Miller bool 469c6df4b17SDavid Miller 47010f8113eSArend van Sprielconfig CORDIC 471d89ce936SMichael Witten tristate "CORDIC algorithm" 47210f8113eSArend van Spriel help 473435a95c5SMichael Witten This option provides an implementation of the CORDIC algorithm; 474435a95c5SMichael Witten calculations are in fixed point. Module will be called cordic. 47510f8113eSArend van Spriel 4769c1c21a0SAneesh Vconfig DDR 4779c1c21a0SAneesh V bool "JEDEC DDR data" 4789c1c21a0SAneesh V help 4799c1c21a0SAneesh V Data from JEDEC specs for DDR SDRAM memories, 4809c1c21a0SAneesh V particularly the AC timing parameters and addressing 4819c1c21a0SAneesh V information. This data is useful for drivers handling 4829c1c21a0SAneesh V DDR SDRAM controllers. 4839c1c21a0SAneesh V 484d9c46b18SDmitry Kasatkinconfig MPILIB 4852e5f094bSDmitry Kasatkin tristate 486c6df4b17SDavid Miller select CLZ_TAB 487d9c46b18SDmitry Kasatkin help 488d9c46b18SDmitry Kasatkin Multiprecision maths library from GnuPG. 489d9c46b18SDmitry Kasatkin It is used to implement RSA digital signature verification, 490d9c46b18SDmitry Kasatkin which is used by IMA/EVM digital signature extension. 491d9c46b18SDmitry Kasatkin 4925e8898e9SDmitry Kasatkinconfig SIGNATURE 4932e5f094bSDmitry Kasatkin tristate 4940d1f64f6SDmitry Kasatkin depends on KEYS 4950d1f64f6SDmitry Kasatkin select CRYPTO 496be440ec7SDmitry Kasatkin select CRYPTO_SHA1 497051dbb91SDmitry Kasatkin select MPILIB 498051dbb91SDmitry Kasatkin help 499051dbb91SDmitry Kasatkin Digital signature verification. Currently only RSA is supported. 500051dbb91SDmitry Kasatkin Implementation is done using GnuPG MPI library 501051dbb91SDmitry Kasatkin 502ab253839SDavid Daney# 503ab253839SDavid Daney# libfdt files, only selected if needed. 504ab253839SDavid Daney# 505ab253839SDavid Daneyconfig LIBFDT 506ab253839SDavid Daney bool 507ab253839SDavid Daney 508a77ad6eaSDavid Howellsconfig OID_REGISTRY 509a77ad6eaSDavid Howells tristate 510a77ad6eaSDavid Howells help 511a77ad6eaSDavid Howells Enable fast lookup object identifier registry. 512a77ad6eaSDavid Howells 5130635eb8aSMatthew Garrettconfig UCS2_STRING 5140635eb8aSMatthew Garrett tristate 5150635eb8aSMatthew Garrett 516ee89bd6bSGeert Uytterhoevensource "lib/fonts/Kconfig" 517ee89bd6bSGeert Uytterhoeven 518308c09f1SLaura Abbott# 519308c09f1SLaura Abbott# sg chaining option 520308c09f1SLaura Abbott# 521308c09f1SLaura Abbott 522308c09f1SLaura Abbottconfig ARCH_HAS_SG_CHAIN 523308c09f1SLaura Abbott def_bool n 524308c09f1SLaura Abbott 525*61031952SRoss Zwislerconfig ARCH_HAS_PMEM_API 526*61031952SRoss Zwisler bool 527*61031952SRoss Zwisler 5282de4ff7bSThomas Grafendmenu 529