1ec8f24b7SThomas Gleixner# SPDX-License-Identifier: GPL-2.0-only 21da177e4SLinus Torvalds# 31da177e4SLinus Torvalds# Library configuration 41da177e4SLinus Torvalds# 51da177e4SLinus Torvalds 64370aa4aSLai Jiangshanconfig BINARY_PRINTF 74370aa4aSLai Jiangshan def_bool n 84370aa4aSLai Jiangshan 91da177e4SLinus Torvaldsmenu "Library routines" 101da177e4SLinus Torvalds 11d2218d4eSMatti Vaittinenconfig LINEAR_RANGES 12d2218d4eSMatti Vaittinen tristate 13d2218d4eSMatti Vaittinen 14554aae35SVladimir Olteanconfig PACKING 15554aae35SVladimir Oltean bool "Generic bitfield packing and unpacking" 161280d4b7SUladzislau Koshchanka select BITREVERSE 17554aae35SVladimir Oltean default n 18554aae35SVladimir Oltean help 19554aae35SVladimir Oltean This option provides the packing() helper function, which permits 20554aae35SVladimir Oltean converting bitfields between a CPU-usable representation and a 21554aae35SVladimir Oltean memory representation that can have any combination of these quirks: 22554aae35SVladimir Oltean - Is little endian (bytes are reversed within a 32-bit group) 23554aae35SVladimir Oltean - The least-significant 32-bit word comes first (within a 64-bit 24554aae35SVladimir Oltean group) 25554aae35SVladimir Oltean - The most significant bit of a byte is at its right (bit 0 of a 26554aae35SVladimir Oltean register description is numerically 2^7). 27554aae35SVladimir Oltean Drivers may use these helpers to match the bit indices as described 28554aae35SVladimir Oltean in the data sheets of the peripherals they are in control of. 29554aae35SVladimir Oltean 30554aae35SVladimir Oltean When in doubt, say N. 31554aae35SVladimir Oltean 32e9502ea6SJacob Kellerconfig PACKING_KUNIT_TEST 33e9502ea6SJacob Keller tristate "KUnit tests for packing library" if !KUNIT_ALL_TESTS 34e9502ea6SJacob Keller depends on PACKING && KUNIT 35e9502ea6SJacob Keller default KUNIT_ALL_TESTS 36e9502ea6SJacob Keller help 37e9502ea6SJacob Keller This builds KUnit tests for the packing library. 38e9502ea6SJacob Keller 39e9502ea6SJacob Keller For more information on KUnit and unit tests in general, 40e9502ea6SJacob Keller please refer to the KUnit documentation in Documentation/dev-tools/kunit/. 41e9502ea6SJacob Keller 42e9502ea6SJacob Keller When in doubt, say N. 43e9502ea6SJacob Keller 44a5cfc1ecSAkinobu Mitaconfig BITREVERSE 45a5cfc1ecSAkinobu Mita tristate 46*00751d65SYury Norov select GENERIC_BITREVERSE if !HAVE_ARCH_BITREVERSE 47a5cfc1ecSAkinobu Mita 48556d2f05SYalin Wangconfig HAVE_ARCH_BITREVERSE 49841c0090SChristoph Jaeger bool 50556d2f05SYalin Wang default n 5142d9c75eSYury Norov depends on BITREVERSE 52556d2f05SYalin Wang help 539e522c0dSAndrew Morton This option enables the use of hardware bit-reversal instructions on 549e522c0dSAndrew Morton architectures which support such operations. 55556d2f05SYalin Wang 56*00751d65SYury Norovconfig GENERIC_BITREVERSE 57*00751d65SYury Norov tristate 58*00751d65SYury Norov depends on BITREVERSE 59*00751d65SYury Norov help 60*00751d65SYury Norov Generic bit reversal implementation. Drivers should never enable 61*00751d65SYury Norov it explicitly. Instead, enable BITREVERSE. 62*00751d65SYury Norov 63*00751d65SYury Norov Architectures may want to select it as a fall-back option for 64*00751d65SYury Norov HAVE_ARCH_BITREVERSE, when the hardware-accelerated bit reverse 65*00751d65SYury Norov instruction set is optional, like RISC-V ZBKB extension. 66*00751d65SYury Norov 67e6226997SArnd Bergmannconfig ARCH_HAS_STRNCPY_FROM_USER 682922585bSDavid S. Miller bool 692922585bSDavid S. Miller 70e6226997SArnd Bergmannconfig ARCH_HAS_STRNLEN_USER 71a08c5356SLinus Torvalds bool 72a08c5356SLinus Torvalds 73e6226997SArnd Bergmannconfig GENERIC_STRNCPY_FROM_USER 74e6226997SArnd Bergmann def_bool !ARCH_HAS_STRNCPY_FROM_USER 75e6226997SArnd Bergmann 76e6226997SArnd Bergmannconfig GENERIC_STRNLEN_USER 77e6226997SArnd Bergmann def_bool !ARCH_HAS_STRNLEN_USER 78e6226997SArnd Bergmann 794cd5773aSAndy Shevchenkoconfig GENERIC_NET_UTILS 804cd5773aSAndy Shevchenko bool 814cd5773aSAndy Shevchenko 822c64e9cbSAndy Shevchenkosource "lib/math/Kconfig" 832c64e9cbSAndy Shevchenko 84b923650bSMichael S. Tsirkinconfig NO_GENERIC_PCI_IOPORT_MAP 85b923650bSMichael S. Tsirkin bool 86b923650bSMichael S. Tsirkin 874673ca8eSMichael S. Tsirkinconfig GENERIC_IOMAP 884673ca8eSMichael S. Tsirkin bool 8966eab4dfSMichael S. Tsirkin select GENERIC_PCI_IOMAP 904673ca8eSMichael S. Tsirkin 914ccf4beaSWolfram Sangconfig STMP_DEVICE 924ccf4beaSWolfram Sang bool 934ccf4beaSWolfram Sang 94bc08b449SLinus Torvaldsconfig ARCH_USE_CMPXCHG_LOCKREF 95bc08b449SLinus Torvalds bool 96bc08b449SLinus Torvalds 9772d93104SLinus Torvaldsconfig ARCH_HAS_FAST_MULTIPLIER 9872d93104SLinus Torvalds bool 9972d93104SLinus Torvalds 1002ce0d7f9SMark Brownconfig ARCH_USE_SYM_ANNOTATIONS 1012ce0d7f9SMark Brown bool 1022ce0d7f9SMark Brown 103031e3601SZhichang Yuanconfig INDIRECT_PIO 104031e3601SZhichang Yuan bool "Access I/O in non-MMIO mode" 105031e3601SZhichang Yuan depends on ARM64 106fcbfe812SNiklas Schnelle depends on HAS_IOPORT 107031e3601SZhichang Yuan help 108031e3601SZhichang Yuan On some platforms where no separate I/O space exists, there are I/O 109031e3601SZhichang Yuan hosts which can not be accessed in MMIO mode. Using the logical PIO 110031e3601SZhichang Yuan mechanism, the host-local I/O resource can be mapped into system 111031e3601SZhichang Yuan logic PIO space shared with MMIO hosts, such as PCI/PCIe, then the 112031e3601SZhichang Yuan system can access the I/O devices with the mapped-logic PIO through 113031e3601SZhichang Yuan I/O accessors. 114031e3601SZhichang Yuan 115031e3601SZhichang Yuan This way has relatively little I/O performance cost. Please make 116031e3601SZhichang Yuan sure your devices really need this configure item enabled. 117031e3601SZhichang Yuan 118031e3601SZhichang Yuan When in doubt, say N. 119031e3601SZhichang Yuan 120ca2e3342SJohannes Bergconfig INDIRECT_IOMEM 121ca2e3342SJohannes Berg bool 122ca2e3342SJohannes Berg help 123ca2e3342SJohannes Berg This is selected by other options/architectures to provide the 124ca2e3342SJohannes Berg emulated iomem accessors. 125ca2e3342SJohannes Berg 126ca2e3342SJohannes Bergconfig INDIRECT_IOMEM_FALLBACK 127ca2e3342SJohannes Berg bool 128ca2e3342SJohannes Berg depends on INDIRECT_IOMEM 129ca2e3342SJohannes Berg help 130ca2e3342SJohannes Berg If INDIRECT_IOMEM is selected, this enables falling back to plain 131ca2e3342SJohannes Berg mmio accesses when the IO memory address is not a registered 132ca2e3342SJohannes Berg emulated region. 133ca2e3342SJohannes Berg 134d593d64fSPrasad Sodagudiconfig TRACE_MMIO_ACCESS 135d593d64fSPrasad Sodagudi bool "Register read/write tracing" 136d593d64fSPrasad Sodagudi depends on TRACING && ARCH_HAVE_TRACE_MMIO_ACCESS 137d593d64fSPrasad Sodagudi help 138d593d64fSPrasad Sodagudi Create tracepoints for MMIO read/write operations. These trace events 139d593d64fSPrasad Sodagudi can be used for logging all MMIO read/write operations. 140d593d64fSPrasad Sodagudi 14189a51591SEric Biggerssource "lib/crc/Kconfig" 142e56e1898SJustin M. Forbessource "lib/crypto/Kconfig" 1439e229025SChristoph Hellwigsource "lib/raid/Kconfig" 144e56e1898SJustin M. Forbes 1455d240522SNick Terrellconfig XXHASH 1465d240522SNick Terrell tristate 1475d240522SNick Terrell 148e65e1fc2SAl Viroconfig AUDIT_GENERIC 149e65e1fc2SAl Viro bool 150e65e1fc2SAl Viro depends on AUDIT && !AUDIT_ARCH 151e65e1fc2SAl Viro default y 152e65e1fc2SAl Viro 1534b588411SAKASHI Takahiroconfig AUDIT_ARCH_COMPAT_GENERIC 1544b588411SAKASHI Takahiro bool 1554b588411SAKASHI Takahiro default n 1564b588411SAKASHI Takahiro 1574b588411SAKASHI Takahiroconfig AUDIT_COMPAT_GENERIC 1584b588411SAKASHI Takahiro bool 1594b588411SAKASHI Takahiro depends on AUDIT_GENERIC && AUDIT_ARCH_COMPAT_GENERIC && COMPAT 1604b588411SAKASHI Takahiro default y 1614b588411SAKASHI Takahiro 1621da177e4SLinus Torvalds# 1631da177e4SLinus Torvalds# compression support is select'ed if needed 1641da177e4SLinus Torvalds# 1652da572c9SDan Streetmanconfig 842_COMPRESS 1665b571677SArnd Bergmann select CRC32 1672da572c9SDan Streetman tristate 1682da572c9SDan Streetman 1692da572c9SDan Streetmanconfig 842_DECOMPRESS 1705b571677SArnd Bergmann select CRC32 1712da572c9SDan Streetman tristate 1722da572c9SDan Streetman 1731da177e4SLinus Torvaldsconfig ZLIB_INFLATE 1741da177e4SLinus Torvalds tristate 1751da177e4SLinus Torvalds 1761da177e4SLinus Torvaldsconfig ZLIB_DEFLATE 1771da177e4SLinus Torvalds tristate 1781fd4e5c3SAndrew Morton select BITREVERSE 1791da177e4SLinus Torvalds 180aa5b395bSMikhail Zaslonkoconfig ZLIB_DFLTCC 181aa5b395bSMikhail Zaslonko def_bool y 182aa5b395bSMikhail Zaslonko depends on S390 183aa5b395bSMikhail Zaslonko prompt "Enable s390x DEFLATE CONVERSION CALL support for kernel zlib" 184aa5b395bSMikhail Zaslonko help 185aa5b395bSMikhail Zaslonko Enable s390x hardware support for zlib in the kernel. 186aa5b395bSMikhail Zaslonko 18764c70b1cSRichard Purdieconfig LZO_COMPRESS 18864c70b1cSRichard Purdie tristate 18964c70b1cSRichard Purdie 19064c70b1cSRichard Purdieconfig LZO_DECOMPRESS 19164c70b1cSRichard Purdie tristate 19264c70b1cSRichard Purdie 193c72ac7a1SChanho Minconfig LZ4_COMPRESS 194c72ac7a1SChanho Min tristate 195c72ac7a1SChanho Min 196c72ac7a1SChanho Minconfig LZ4HC_COMPRESS 197c72ac7a1SChanho Min tristate 198c72ac7a1SChanho Min 199e76e1fdfSKyungsik Leeconfig LZ4_DECOMPRESS 200e76e1fdfSKyungsik Lee tristate 201e76e1fdfSKyungsik Lee 202637a642fSAlexey Kardashevskiyconfig ZSTD_COMMON 20373f3d1b4SNick Terrell select XXHASH 20473f3d1b4SNick Terrell tristate 20573f3d1b4SNick Terrell 206637a642fSAlexey Kardashevskiyconfig ZSTD_COMPRESS 207637a642fSAlexey Kardashevskiy select ZSTD_COMMON 208637a642fSAlexey Kardashevskiy tristate 209637a642fSAlexey Kardashevskiy 21073f3d1b4SNick Terrellconfig ZSTD_DECOMPRESS 211637a642fSAlexey Kardashevskiy select ZSTD_COMMON 21273f3d1b4SNick Terrell tristate 21373f3d1b4SNick Terrell 21424fa0402SLasse Collinsource "lib/xz/Kconfig" 21524fa0402SLasse Collin 2161da177e4SLinus Torvalds# 217c8531ab3SH. Peter Anvin# These all provide a common interface (hence the apparent duplication with 218c8531ab3SH. Peter Anvin# ZLIB_INFLATE; DECOMPRESS_GZIP is just a wrapper.) 219c8531ab3SH. Peter Anvin# 220c8531ab3SH. Peter Anvinconfig DECOMPRESS_GZIP 2217856a16eSH. Peter Anvin select ZLIB_INFLATE 222c8531ab3SH. Peter Anvin tristate 223c8531ab3SH. Peter Anvin 224c8531ab3SH. Peter Anvinconfig DECOMPRESS_BZIP2 225c8531ab3SH. Peter Anvin tristate 226c8531ab3SH. Peter Anvin 227c8531ab3SH. Peter Anvinconfig DECOMPRESS_LZMA 228c8531ab3SH. Peter Anvin tristate 229c8531ab3SH. Peter Anvin 2303ebe1243SLasse Collinconfig DECOMPRESS_XZ 2313ebe1243SLasse Collin select XZ_DEC 2323ebe1243SLasse Collin tristate 2333ebe1243SLasse Collin 234cacb246fSAlbin Tonnerreconfig DECOMPRESS_LZO 235cacb246fSAlbin Tonnerre select LZO_DECOMPRESS 236cacb246fSAlbin Tonnerre tristate 237cacb246fSAlbin Tonnerre 238e76e1fdfSKyungsik Leeconfig DECOMPRESS_LZ4 239e76e1fdfSKyungsik Lee select LZ4_DECOMPRESS 240e76e1fdfSKyungsik Lee tristate 241e76e1fdfSKyungsik Lee 2424963bb2bSNick Terrellconfig DECOMPRESS_ZSTD 2434963bb2bSNick Terrell select ZSTD_DECOMPRESS 2444963bb2bSNick Terrell tristate 2454963bb2bSNick Terrell 246c8531ab3SH. Peter Anvin# 247f14f75b8SJes Sorensen# Generic allocator support is selected if needed 248f14f75b8SJes Sorensen# 249f14f75b8SJes Sorensenconfig GENERIC_ALLOCATOR 2506341e62bSChristoph Jaeger bool 251f14f75b8SJes Sorensen 252f14f75b8SJes Sorensen# 2531da177e4SLinus Torvalds# reed solomon support is select'ed if needed 2541da177e4SLinus Torvalds# 2551da177e4SLinus Torvaldsconfig REED_SOLOMON 2561da177e4SLinus Torvalds tristate 2571da177e4SLinus Torvalds 2581da177e4SLinus Torvaldsconfig REED_SOLOMON_ENC8 2596341e62bSChristoph Jaeger bool 2601da177e4SLinus Torvalds 2611da177e4SLinus Torvaldsconfig REED_SOLOMON_DEC8 2626341e62bSChristoph Jaeger bool 2631da177e4SLinus Torvalds 2641da177e4SLinus Torvaldsconfig REED_SOLOMON_ENC16 2656341e62bSChristoph Jaeger bool 2661da177e4SLinus Torvalds 2671da177e4SLinus Torvaldsconfig REED_SOLOMON_DEC16 2686341e62bSChristoph Jaeger bool 2691da177e4SLinus Torvalds 270f7704347SDavid S. Miller# 271437aa565SIvan Djelic# BCH support is selected if needed 272437aa565SIvan Djelic# 273437aa565SIvan Djelicconfig BCH 274437aa565SIvan Djelic tristate 27502d7f74aSJohn Sanpe select BITREVERSE 276437aa565SIvan Djelic 277437aa565SIvan Djelicconfig BCH_CONST_PARAMS 2786341e62bSChristoph Jaeger bool 279437aa565SIvan Djelic help 280437aa565SIvan Djelic Drivers may select this option to force specific constant 281437aa565SIvan Djelic values for parameters 'm' (Galois field order) and 't' 282437aa565SIvan Djelic (error correction capability). Those specific values must 283437aa565SIvan Djelic be set by declaring default values for symbols BCH_CONST_M 284437aa565SIvan Djelic and BCH_CONST_T. 285437aa565SIvan Djelic Doing so will enable extra compiler optimizations, 286437aa565SIvan Djelic improving encoding and decoding performance up to 2x for 287437aa565SIvan Djelic usual (m,t) values (typically such that m*t < 200). 288437aa565SIvan Djelic When this option is selected, the BCH library supports 289437aa565SIvan Djelic only a single (m,t) configuration. This is mainly useful 290437aa565SIvan Djelic for NAND flash board drivers requiring known, fixed BCH 291437aa565SIvan Djelic parameters. 292437aa565SIvan Djelic 293437aa565SIvan Djelicconfig BCH_CONST_M 294437aa565SIvan Djelic int 295437aa565SIvan Djelic range 5 15 296437aa565SIvan Djelic help 297437aa565SIvan Djelic Constant value for Galois field order 'm'. If 'k' is the 298437aa565SIvan Djelic number of data bits to protect, 'm' should be chosen such 299437aa565SIvan Djelic that (k + m*t) <= 2**m - 1. 300437aa565SIvan Djelic Drivers should declare a default value for this symbol if 301437aa565SIvan Djelic they select option BCH_CONST_PARAMS. 302437aa565SIvan Djelic 303437aa565SIvan Djelicconfig BCH_CONST_T 304437aa565SIvan Djelic int 305437aa565SIvan Djelic help 306437aa565SIvan Djelic Constant value for error correction capability in bits 't'. 307437aa565SIvan Djelic Drivers should declare a default value for this symbol if 308437aa565SIvan Djelic they select option BCH_CONST_PARAMS. 309437aa565SIvan Djelic 310437aa565SIvan Djelic# 311f7704347SDavid S. Miller# Textsearch support is select'ed if needed 312f7704347SDavid S. Miller# 3132de4ff7bSThomas Grafconfig TEXTSEARCH 3146341e62bSChristoph Jaeger bool 3151da177e4SLinus Torvalds 316df3fb93aSThomas Grafconfig TEXTSEARCH_KMP 317f7704347SDavid S. Miller tristate 318df3fb93aSThomas Graf 3198082e4edSPablo Neira Ayusoconfig TEXTSEARCH_BM 32029cb9f9cSDavid S. Miller tristate 3218082e4edSPablo Neira Ayuso 3226408f79cSThomas Grafconfig TEXTSEARCH_FSM 323f7704347SDavid S. Miller tristate 3246408f79cSThomas Graf 3255db53f3eSJoern Engelconfig BTREE 3266341e62bSChristoph Jaeger bool 3275db53f3eSJoern Engel 328a88cc108SChris Wilsonconfig INTERVAL_TREE 3296341e62bSChristoph Jaeger bool 330a88cc108SChris Wilson help 331a88cc108SChris Wilson Simple, embeddable, interval-tree. Can find the start of an 332a88cc108SChris Wilson overlapping range in log(n) time and then iterate over all 333a88cc108SChris Wilson overlapping nodes. The algorithm is implemented as an 334a88cc108SChris Wilson augmented rbtree. 335a88cc108SChris Wilson 336a88cc108SChris Wilson See: 337a88cc108SChris Wilson 33814bbe3e3SMatthew Wilcox (Oracle) Documentation/core-api/rbtree.rst 339a88cc108SChris Wilson 340a88cc108SChris Wilson for more information. 341a88cc108SChris Wilson 3425fe93786SJason Gunthorpeconfig INTERVAL_TREE_SPAN_ITER 3435fe93786SJason Gunthorpe bool 3445fe93786SJason Gunthorpe depends on INTERVAL_TREE 3455fe93786SJason Gunthorpe 34602c02bf1SMatthew Wilcoxconfig XARRAY_MULTI 34757578c2eSMatthew Wilcox bool 34802c02bf1SMatthew Wilcox help 34902c02bf1SMatthew Wilcox Support entries which occupy multiple consecutive indices in the 35002c02bf1SMatthew Wilcox XArray. 35157578c2eSMatthew Wilcox 3523cb98950SDavid Howellsconfig ASSOCIATIVE_ARRAY 3533cb98950SDavid Howells bool 3543cb98950SDavid Howells help 3553cb98950SDavid Howells Generic associative array. Can be searched and iterated over whilst 3563cb98950SDavid Howells it is being modified. It is also reasonably quick to search and 3573cb98950SDavid Howells modify. The algorithms are non-recursive, and the trees are highly 3583cb98950SDavid Howells capacious. 3593cb98950SDavid Howells 3603cb98950SDavid Howells See: 3613cb98950SDavid Howells 3625fb94e9cSMauro Carvalho Chehab Documentation/core-api/assoc_array.rst 3633cb98950SDavid Howells 3643cb98950SDavid Howells for more information. 3653cb98950SDavid Howells 3668c8d2d96SKent Overstreetconfig CLOSURES 3678c8d2d96SKent Overstreet bool 3688c8d2d96SKent Overstreet 3695ea81769SAl Viroconfig HAS_IOMEM 3706341e62bSChristoph Jaeger bool 3715ea81769SAl Viro depends on !NO_IOMEM 3725ea81769SAl Viro default y 3735ea81769SAl Viro 374fcbfe812SNiklas Schnelleconfig HAS_IOPORT 375fcbfe812SNiklas Schnelle bool 376fcbfe812SNiklas Schnelle 377ce816fa8SUwe Kleine-Königconfig HAS_IOPORT_MAP 3786341e62bSChristoph Jaeger bool 379ce816fa8SUwe Kleine-König depends on HAS_IOMEM && !NO_IOPORT_MAP 380ee36c2bfSAl Viro default y 381ee36c2bfSAl Viro 382cf65a0f6SChristoph Hellwigsource "kernel/dma/Kconfig" 383411f0f3eSHeiko Carstens 384e80a0af4SBart Van Asscheconfig SGL_ALLOC 385e80a0af4SBart Van Assche bool 386e80a0af4SBart Van Assche default n 387e80a0af4SBart Van Assche 388a4ce5a48SChristoph Hellwigconfig IOMMU_HELPER 389a4ce5a48SChristoph Hellwig bool 390a4ce5a48SChristoph Hellwig 391928923c7SGeert Uytterhoevenconfig CHECK_SIGNATURE 392928923c7SGeert Uytterhoeven bool 393928923c7SGeert Uytterhoeven 394aab46da0SRusty Russellconfig CPUMASK_OFFSTACK 395aab46da0SRusty Russell bool "Force CPU masks off stack" if DEBUG_PER_CPU_MAPS 396aab46da0SRusty Russell help 397aab46da0SRusty Russell Use dynamic allocation for cpumask_var_t, instead of putting 398aab46da0SRusty Russell them on the stack. This is a bit more expensive, but avoids 399aab46da0SRusty Russell stack overflow. 400aab46da0SRusty Russell 4016f9c07beSYury Norovconfig FORCE_NR_CPUS 4025d272dd1SLinus Torvalds def_bool !SMP 4036f9c07beSYury Norov 404c39649c3SBen Hutchingsconfig CPU_RMAP 405c39649c3SBen Hutchings bool 406c39649c3SBen Hutchings depends on SMP 407c39649c3SBen Hutchings 40875957ba3STom Herbertconfig DQL 40975957ba3STom Herbert bool 41075957ba3STom Herbert 411b0125085SGeorge Spelvinconfig GLOB 412b0125085SGeorge Spelvin bool 413b0125085SGeorge Spelvin# This actually supports modular compilation, but the module overhead 414b0125085SGeorge Spelvin# is ridiculous for the amount of code involved. Until an out-of-tree 415b0125085SGeorge Spelvin# driver asks for it, we'll just link it directly it into the kernel 416b0125085SGeorge Spelvin# when required. Since we're ignoring out-of-tree users, there's also 417b0125085SGeorge Spelvin# no need bother prompting for a manual decision: 418b0125085SGeorge Spelvin# prompt "glob_match() function" 419b0125085SGeorge Spelvin help 420b0125085SGeorge Spelvin This option provides a glob_match function for performing 421b0125085SGeorge Spelvin simple text pattern matching. It originated in the ATA code 422b0125085SGeorge Spelvin to blacklist particular drive models, but other device drivers 423b0125085SGeorge Spelvin may need similar functionality. 424b0125085SGeorge Spelvin 425b0125085SGeorge Spelvin All drivers in the Linux kernel tree that require this function 426b0125085SGeorge Spelvin should automatically select this option. Say N unless you 427b0125085SGeorge Spelvin are compiling an out-of tree driver which tells you that it 428b0125085SGeorge Spelvin depends on this. 429b0125085SGeorge Spelvin 430e9cc8bddSGeert Uytterhoeven# 431e9cc8bddSGeert Uytterhoeven# Netlink attribute parsing support is select'ed if needed 432e9cc8bddSGeert Uytterhoeven# 433e9cc8bddSGeert Uytterhoevenconfig NLATTR 434e9cc8bddSGeert Uytterhoeven bool 435e9cc8bddSGeert Uytterhoeven 43609d4e0edSPaul Mackerras# 43709d4e0edSPaul Mackerras# Generic 64-bit atomic support is selected if needed 43809d4e0edSPaul Mackerras# 43909d4e0edSPaul Mackerrasconfig GENERIC_ATOMIC64 44009d4e0edSPaul Mackerras bool 44109d4e0edSPaul Mackerras 442b411b363SPhilipp Reisnerconfig LRU_CACHE 443b411b363SPhilipp Reisner tristate 444b411b363SPhilipp Reisner 445c6df4b17SDavid Millerconfig CLZ_TAB 446c6df4b17SDavid Miller bool 447c6df4b17SDavid Miller 448511cbce2SChristoph Hellwigconfig IRQ_POLL 449511cbce2SChristoph Hellwig bool "IRQ polling library" 450511cbce2SChristoph Hellwig help 451511cbce2SChristoph Hellwig Helper library to poll interrupt mitigation using polling. 452511cbce2SChristoph Hellwig 453d9c46b18SDmitry Kasatkinconfig MPILIB 4542e5f094bSDmitry Kasatkin tristate 455c6df4b17SDavid Miller select CLZ_TAB 456d9c46b18SDmitry Kasatkin help 457d9c46b18SDmitry Kasatkin Multiprecision maths library from GnuPG. 458d9c46b18SDmitry Kasatkin It is used to implement RSA digital signature verification, 459d9c46b18SDmitry Kasatkin which is used by IMA/EVM digital signature extension. 460d9c46b18SDmitry Kasatkin 4615e8898e9SDmitry Kasatkinconfig SIGNATURE 4622e5f094bSDmitry Kasatkin tristate 4630d1f64f6SDmitry Kasatkin depends on KEYS 464191cac34SEric Biggers select CRYPTO_LIB_SHA1 465051dbb91SDmitry Kasatkin select MPILIB 466051dbb91SDmitry Kasatkin help 467051dbb91SDmitry Kasatkin Digital signature verification. Currently only RSA is supported. 468051dbb91SDmitry Kasatkin Implementation is done using GnuPG MPI library 469051dbb91SDmitry Kasatkin 4704f75da36STal Gilboaconfig DIMLIB 4710d5044b4SFlorian Fainelli tristate 472b65e697aSHeng Qi depends on NET 4734f75da36STal Gilboa help 4744f75da36STal Gilboa Dynamic Interrupt Moderation library. 475991ad2b2SRandy Dunlap Implements an algorithm for dynamically changing CQ moderation values 4764f75da36STal Gilboa according to run time performance. 4774f75da36STal Gilboa 478ab253839SDavid Daney# 479ab253839SDavid Daney# libfdt files, only selected if needed. 480ab253839SDavid Daney# 481ab253839SDavid Daneyconfig LIBFDT 482ab253839SDavid Daney bool 483ab253839SDavid Daney 484a77ad6eaSDavid Howellsconfig OID_REGISTRY 485a77ad6eaSDavid Howells tristate 486a77ad6eaSDavid Howells help 487a77ad6eaSDavid Howells Enable fast lookup object identifier registry. 488a77ad6eaSDavid Howells 4890635eb8aSMatthew Garrettconfig UCS2_STRING 4900635eb8aSMatthew Garrett tristate 4910635eb8aSMatthew Garrett 49200b26474SVincenzo Frascino# 49300b26474SVincenzo Frascino# generic vdso 49400b26474SVincenzo Frascino# 49500b26474SVincenzo Frascinosource "lib/vdso/Kconfig" 49600b26474SVincenzo Frascino 497ee89bd6bSGeert Uytterhoevensource "lib/fonts/Kconfig" 498ee89bd6bSGeert Uytterhoeven 499f8bcbe62SRobert Jarzmikconfig SG_SPLIT 500f8bcbe62SRobert Jarzmik def_bool n 501f8bcbe62SRobert Jarzmik help 5027f7e92f7SGeert Uytterhoeven Provides a helper to split scatterlists into chunks, each chunk being 5037f7e92f7SGeert Uytterhoeven a scatterlist. This should be selected by a driver or an API which 5047f7e92f7SGeert Uytterhoeven whishes to split a scatterlist amongst multiple DMA channels. 505f8bcbe62SRobert Jarzmik 5069b1d6c89SMing Linconfig SG_POOL 5079b1d6c89SMing Lin def_bool n 5089b1d6c89SMing Lin help 5099b1d6c89SMing Lin Provides a helper to allocate chained scatterlists. This should be 5109b1d6c89SMing Lin selected by a driver or an API which whishes to allocate chained 5119b1d6c89SMing Lin scatterlist. 5129b1d6c89SMing Lin 513308c09f1SLaura Abbott# 514308c09f1SLaura Abbott# sg chaining option 515308c09f1SLaura Abbott# 516308c09f1SLaura Abbott 5177c703e54SChristoph Hellwigconfig ARCH_NO_SG_CHAIN 518308c09f1SLaura Abbott def_bool n 519308c09f1SLaura Abbott 52061031952SRoss Zwislerconfig ARCH_HAS_PMEM_API 52161031952SRoss Zwisler bool 52261031952SRoss Zwisler 52333dd7075SDan Williamsconfig MEMREGION 52433dd7075SDan Williams bool 52533dd7075SDan Williams 5261156b441SDavidlohr Buesoconfig ARCH_HAS_CPU_CACHE_INVALIDATE_MEMREGION 5271156b441SDavidlohr Bueso bool 5281156b441SDavidlohr Bueso 529c460697dSYicong Yangconfig GENERIC_CPU_CACHE_MAINTENANCE 530c460697dSYicong Yang bool 531c460697dSYicong Yang 5329ffc1d19SDan Williamsconfig ARCH_HAS_MEMREMAP_COMPAT_ALIGN 5339ffc1d19SDan Williams bool 5349ffc1d19SDan Williams 535bd79f947SChristoph Hellwig# use memcpy to implement user copies for nommu architectures 536bd79f947SChristoph Hellwigconfig UACCESS_MEMCPY 537bd79f947SChristoph Hellwig bool 538bd79f947SChristoph Hellwig 5390aed55afSDan Williamsconfig ARCH_HAS_UACCESS_FLUSHCACHE 5400aed55afSDan Williams bool 5410aed55afSDan Williams 542ec6347bbSDan Williams# arch has a concept of a recoverable synchronous exception due to a 543ec6347bbSDan Williams# memory-read error like x86 machine-check or ARM data-abort, and 544ec6347bbSDan Williams# implements copy_mc_to_{user,kernel} to abort and report 545ec6347bbSDan Williams# 'bytes-transferred' if that exception fires when accessing the source 546ec6347bbSDan Williams# buffer. 547ec6347bbSDan Williamsconfig ARCH_HAS_COPY_MC 548522239b4SDan Williams bool 549522239b4SDan Williams 550214d8ca6SThomas Gleixner# Temporary. Goes away when all archs are cleaned up 551214d8ca6SThomas Gleixnerconfig ARCH_STACKWALK 552214d8ca6SThomas Gleixner bool 553214d8ca6SThomas Gleixner 554cd11016eSAlexander Potapenkoconfig STACKDEPOT 555cd11016eSAlexander Potapenko bool 556cd11016eSAlexander Potapenko select STACKTRACE 557fc60e0caSAndrey Konovalov help 558fc60e0caSAndrey Konovalov Stack depot: stack trace storage that avoids duplication 559cd11016eSAlexander Potapenko 5602dba5eb1SVlastimil Babkaconfig STACKDEPOT_ALWAYS_INIT 5612dba5eb1SVlastimil Babka bool 5622dba5eb1SVlastimil Babka select STACKDEPOT 563fc60e0caSAndrey Konovalov help 564fc60e0caSAndrey Konovalov Always initialize stack depot during early boot 565fc60e0caSAndrey Konovalov 566fc60e0caSAndrey Konovalovconfig STACKDEPOT_MAX_FRAMES 567fc60e0caSAndrey Konovalov int "Maximum number of frames in trace saved in stack depot" 568fc60e0caSAndrey Konovalov range 1 256 569fc60e0caSAndrey Konovalov default 64 570fc60e0caSAndrey Konovalov depends on STACKDEPOT 5712dba5eb1SVlastimil Babka 5724e66934eSEric Dumazetconfig REF_TRACKER 5734e66934eSEric Dumazet bool 5744e66934eSEric Dumazet depends on STACKTRACE_SUPPORT 5754e66934eSEric Dumazet select STACKDEPOT 5764e66934eSEric Dumazet 57788459642SOmar Sandovalconfig SBITMAP 57888459642SOmar Sandoval bool 57988459642SOmar Sandoval 58044091d29SJiri Pirkoconfig PARMAN 5819d25af69SGeert Uytterhoeven tristate "parman" if COMPILE_TEST 58244091d29SJiri Pirko 5833dfdecc6SRandy Dunlapconfig OBJAGG 5843dfdecc6SRandy Dunlap tristate "objagg" if COMPILE_TEST 5853dfdecc6SRandy Dunlap 586de9e82c3SNeilBrownconfig LWQ_TEST 587de9e82c3SNeilBrown bool "Boot-time test for lwq queuing" 588de9e82c3SNeilBrown help 589de9e82c3SNeilBrown Run boot-time test of light-weight queuing. 590de9e82c3SNeilBrown 5912de4ff7bSThomas Grafendmenu 592b35cd988SPalmer Dabbelt 59380b0ca98SChristoph Hellwigconfig GENERIC_IOREMAP 59480b0ca98SChristoph Hellwig bool 59580b0ca98SChristoph Hellwig 596e3d59805SMatt Redfearnconfig GENERIC_LIB_ASHLDI3 597b35cd988SPalmer Dabbelt bool 598b35cd988SPalmer Dabbelt 599e3d59805SMatt Redfearnconfig GENERIC_LIB_ASHRDI3 600b35cd988SPalmer Dabbelt bool 601b35cd988SPalmer Dabbelt 602e3d59805SMatt Redfearnconfig GENERIC_LIB_LSHRDI3 603b35cd988SPalmer Dabbelt bool 604b35cd988SPalmer Dabbelt 605e3d59805SMatt Redfearnconfig GENERIC_LIB_MULDI3 606b35cd988SPalmer Dabbelt bool 607b35cd988SPalmer Dabbelt 608e3d59805SMatt Redfearnconfig GENERIC_LIB_CMPDI2 609b35cd988SPalmer Dabbelt bool 610b35cd988SPalmer Dabbelt 611e3d59805SMatt Redfearnconfig GENERIC_LIB_UCMPDI2 612b35cd988SPalmer Dabbelt bool 613b8265621SJacob Keller 614527701edSPalmer Dabbeltconfig GENERIC_LIB_DEVMEM_IS_ALLOWED 615527701edSPalmer Dabbelt bool 616527701edSPalmer Dabbelt 617b8265621SJacob Kellerconfig PLDMFW 618b8265621SJacob Keller bool 6191224b218SSimon Horman select CRC32 620b8265621SJacob Keller default n 621b0706762SJames Bottomley 622b0706762SJames Bottomleyconfig ASN1_ENCODER 623b0706762SJames Bottomley tristate 624cd705ea8SMichael Walle 625a103f466SDave Jiangconfig FIRMWARE_TABLE 626a103f466SDave Jiang bool 627bf9850f6SKuan-Wei Chiu 628bf9850f6SKuan-Wei Chiuconfig UNION_FIND 629bf9850f6SKuan-Wei Chiu bool 63092a8b224SKuan-Wei Chiu 63192a8b224SKuan-Wei Chiuconfig MIN_HEAP 63292a8b224SKuan-Wei Chiu bool 633