# # Library configuration # config BINARY_PRINTF def_bool n menu "Library routines" config RAID6_PQ tristate config BITREVERSE tristate config RATIONAL boolean config GENERIC_FIND_FIRST_BIT bool config CRC_CCITT tristate "CRC-CCITT functions" help This option is provided for the case where no in-kernel-tree modules require CRC-CCITT functions, but a module built outside the kernel tree does. Such modules that use library CRC-CCITT functions require M here. config CRC16 tristate "CRC16 functions" help This option is provided for the case where no in-kernel-tree modules require CRC16 functions, but a module built outside the kernel tree does. Such modules that use library CRC16 functions require M here. config CRC_T10DIF tristate "CRC calculation for the T10 Data Integrity Field" help This option is only needed if a module that's not in the kernel tree needs to calculate CRC checks for use with the SCSI data integrity subsystem. config CRC_ITU_T tristate "CRC ITU-T V.41 functions" help This option is provided for the case where no in-kernel-tree modules require CRC ITU-T V.41 functions, but a module built outside the kernel tree does. Such modules that use library CRC ITU-T V.41 functions require M here. config CRC32 tristate "CRC32 functions" default y select BITREVERSE help This option is provided for the case where no in-kernel-tree modules require CRC32 functions, but a module built outside the kernel tree does. Such modules that use library CRC32 functions require M here. config CRC7 tristate "CRC7 functions" help This option is provided for the case where no in-kernel-tree modules require CRC7 functions, but a module built outside the kernel tree does. Such modules that use library CRC7 functions require M here. config LIBCRC32C tristate "CRC32c (Castagnoli, et al) Cyclic Redundancy-Check" select CRYPTO select CRYPTO_CRC32C help This option is provided for the case where no in-kernel-tree modules require CRC32c functions, but a module built outside the kernel tree does. Such modules that use library CRC32c functions require M here. See Castagnoli93. Module will be libcrc32c. config CRC8 tristate "CRC8 function" help This option provides CRC8 function. Drivers may select this when they need to do cyclic redundancy check according CRC8 algorithm. Module will be called crc8. config AUDIT_GENERIC bool depends on AUDIT && !AUDIT_ARCH default y # # compression support is select'ed if needed # config ZLIB_INFLATE tristate config ZLIB_DEFLATE tristate config LZO_COMPRESS tristate config LZO_DECOMPRESS tristate source "lib/xz/Kconfig" # # These all provide a common interface (hence the apparent duplication with # ZLIB_INFLATE; DECOMPRESS_GZIP is just a wrapper.) # config DECOMPRESS_GZIP select ZLIB_INFLATE tristate config DECOMPRESS_BZIP2 tristate config DECOMPRESS_LZMA tristate config DECOMPRESS_XZ select XZ_DEC tristate config DECOMPRESS_LZO select LZO_DECOMPRESS tristate # # Generic allocator support is selected if needed # config GENERIC_ALLOCATOR boolean # # reed solomon support is select'ed if needed # config REED_SOLOMON tristate config REED_SOLOMON_ENC8 boolean config REED_SOLOMON_DEC8 boolean config REED_SOLOMON_ENC16 boolean config REED_SOLOMON_DEC16 boolean # # BCH support is selected if needed # config BCH tristate config BCH_CONST_PARAMS boolean help Drivers may select this option to force specific constant values for parameters 'm' (Galois field order) and 't' (error correction capability). Those specific values must be set by declaring default values for symbols BCH_CONST_M and BCH_CONST_T. Doing so will enable extra compiler optimizations, improving encoding and decoding performance up to 2x for usual (m,t) values (typically such that m*t < 200). When this option is selected, the BCH library supports only a single (m,t) configuration. This is mainly useful for NAND flash board drivers requiring known, fixed BCH parameters. config BCH_CONST_M int range 5 15 help Constant value for Galois field order 'm'. If 'k' is the number of data bits to protect, 'm' should be chosen such that (k + m*t) <= 2**m - 1. Drivers should declare a default value for this symbol if they select option BCH_CONST_PARAMS. config BCH_CONST_T int help Constant value for error correction capability in bits 't'. Drivers should declare a default value for this symbol if they select option BCH_CONST_PARAMS. # # Textsearch support is select'ed if needed # config TEXTSEARCH boolean config TEXTSEARCH_KMP tristate config TEXTSEARCH_BM tristate config TEXTSEARCH_FSM tristate config BTREE boolean config HAS_IOMEM boolean depends on !NO_IOMEM default y config HAS_IOPORT boolean depends on HAS_IOMEM && !NO_IOPORT default y config HAS_DMA boolean depends on !NO_DMA default y config CHECK_SIGNATURE bool config CPUMASK_OFFSTACK bool "Force CPU masks off stack" if DEBUG_PER_CPU_MAPS help Use dynamic allocation for cpumask_var_t, instead of putting them on the stack. This is a bit more expensive, but avoids stack overflow. config DISABLE_OBSOLETE_CPUMASK_FUNCTIONS bool "Disable obsolete cpumask functions" if DEBUG_PER_CPU_MAPS depends on EXPERIMENTAL && BROKEN config CPU_RMAP bool depends on SMP config DQL bool # # Netlink attribute parsing support is select'ed if needed # config NLATTR bool # # Generic 64-bit atomic support is selected if needed # config GENERIC_ATOMIC64 bool config LRU_CACHE tristate config AVERAGE bool "Averaging functions" help This option is provided for the case where no in-kernel-tree modules require averaging functions, but a module built outside the kernel tree does. Such modules that use library averaging functions require Y here. If unsure, say N. config CORDIC tristate "CORDIC algorithm" help This option provides an implementation of the CORDIC algorithm; calculations are in fixed point. Module will be called cordic. endmenu