1# 2# Library configuration 3# 4 5config BINARY_PRINTF 6 def_bool n 7 8menu "Library routines" 9 10config RAID6_PQ 11 tristate 12 13config BITREVERSE 14 tristate 15 16config RATIONAL 17 boolean 18 19config GENERIC_FIND_FIRST_BIT 20 bool 21 22config CRC_CCITT 23 tristate "CRC-CCITT functions" 24 help 25 This option is provided for the case where no in-kernel-tree 26 modules require CRC-CCITT functions, but a module built outside 27 the kernel tree does. Such modules that use library CRC-CCITT 28 functions require M here. 29 30config CRC16 31 tristate "CRC16 functions" 32 help 33 This option is provided for the case where no in-kernel-tree 34 modules require CRC16 functions, but a module built outside 35 the kernel tree does. Such modules that use library CRC16 36 functions require M here. 37 38config CRC_T10DIF 39 tristate "CRC calculation for the T10 Data Integrity Field" 40 help 41 This option is only needed if a module that's not in the 42 kernel tree needs to calculate CRC checks for use with the 43 SCSI data integrity subsystem. 44 45config CRC_ITU_T 46 tristate "CRC ITU-T V.41 functions" 47 help 48 This option is provided for the case where no in-kernel-tree 49 modules require CRC ITU-T V.41 functions, but a module built outside 50 the kernel tree does. Such modules that use library CRC ITU-T V.41 51 functions require M here. 52 53config CRC32 54 tristate "CRC32 functions" 55 default y 56 select BITREVERSE 57 help 58 This option is provided for the case where no in-kernel-tree 59 modules require CRC32 functions, but a module built outside the 60 kernel tree does. Such modules that use library CRC32 functions 61 require M here. 62 63config CRC7 64 tristate "CRC7 functions" 65 help 66 This option is provided for the case where no in-kernel-tree 67 modules require CRC7 functions, but a module built outside 68 the kernel tree does. Such modules that use library CRC7 69 functions require M here. 70 71config LIBCRC32C 72 tristate "CRC32c (Castagnoli, et al) Cyclic Redundancy-Check" 73 select CRYPTO 74 select CRYPTO_CRC32C 75 help 76 This option is provided for the case where no in-kernel-tree 77 modules require CRC32c functions, but a module built outside the 78 kernel tree does. Such modules that use library CRC32c functions 79 require M here. See Castagnoli93. 80 Module will be libcrc32c. 81 82config CRC8 83 tristate "CRC8 function" 84 help 85 This option provides CRC8 function. Drivers may select this 86 when they need to do cyclic redundancy check according CRC8 87 algorithm. Module will be called crc8. 88 89config AUDIT_GENERIC 90 bool 91 depends on AUDIT && !AUDIT_ARCH 92 default y 93 94# 95# compression support is select'ed if needed 96# 97config ZLIB_INFLATE 98 tristate 99 100config ZLIB_DEFLATE 101 tristate 102 103config LZO_COMPRESS 104 tristate 105 106config LZO_DECOMPRESS 107 tristate 108 109source "lib/xz/Kconfig" 110 111# 112# These all provide a common interface (hence the apparent duplication with 113# ZLIB_INFLATE; DECOMPRESS_GZIP is just a wrapper.) 114# 115config DECOMPRESS_GZIP 116 select ZLIB_INFLATE 117 tristate 118 119config DECOMPRESS_BZIP2 120 tristate 121 122config DECOMPRESS_LZMA 123 tristate 124 125config DECOMPRESS_XZ 126 select XZ_DEC 127 tristate 128 129config DECOMPRESS_LZO 130 select LZO_DECOMPRESS 131 tristate 132 133# 134# Generic allocator support is selected if needed 135# 136config GENERIC_ALLOCATOR 137 boolean 138 139# 140# reed solomon support is select'ed if needed 141# 142config REED_SOLOMON 143 tristate 144 145config REED_SOLOMON_ENC8 146 boolean 147 148config REED_SOLOMON_DEC8 149 boolean 150 151config REED_SOLOMON_ENC16 152 boolean 153 154config REED_SOLOMON_DEC16 155 boolean 156 157# 158# BCH support is selected if needed 159# 160config BCH 161 tristate 162 163config BCH_CONST_PARAMS 164 boolean 165 help 166 Drivers may select this option to force specific constant 167 values for parameters 'm' (Galois field order) and 't' 168 (error correction capability). Those specific values must 169 be set by declaring default values for symbols BCH_CONST_M 170 and BCH_CONST_T. 171 Doing so will enable extra compiler optimizations, 172 improving encoding and decoding performance up to 2x for 173 usual (m,t) values (typically such that m*t < 200). 174 When this option is selected, the BCH library supports 175 only a single (m,t) configuration. This is mainly useful 176 for NAND flash board drivers requiring known, fixed BCH 177 parameters. 178 179config BCH_CONST_M 180 int 181 range 5 15 182 help 183 Constant value for Galois field order 'm'. If 'k' is the 184 number of data bits to protect, 'm' should be chosen such 185 that (k + m*t) <= 2**m - 1. 186 Drivers should declare a default value for this symbol if 187 they select option BCH_CONST_PARAMS. 188 189config BCH_CONST_T 190 int 191 help 192 Constant value for error correction capability in bits 't'. 193 Drivers should declare a default value for this symbol if 194 they select option BCH_CONST_PARAMS. 195 196# 197# Textsearch support is select'ed if needed 198# 199config TEXTSEARCH 200 boolean 201 202config TEXTSEARCH_KMP 203 tristate 204 205config TEXTSEARCH_BM 206 tristate 207 208config TEXTSEARCH_FSM 209 tristate 210 211config BTREE 212 boolean 213 214config HAS_IOMEM 215 boolean 216 depends on !NO_IOMEM 217 default y 218 219config HAS_IOPORT 220 boolean 221 depends on HAS_IOMEM && !NO_IOPORT 222 default y 223 224config HAS_DMA 225 boolean 226 depends on !NO_DMA 227 default y 228 229config CHECK_SIGNATURE 230 bool 231 232config CPUMASK_OFFSTACK 233 bool "Force CPU masks off stack" if DEBUG_PER_CPU_MAPS 234 help 235 Use dynamic allocation for cpumask_var_t, instead of putting 236 them on the stack. This is a bit more expensive, but avoids 237 stack overflow. 238 239config DISABLE_OBSOLETE_CPUMASK_FUNCTIONS 240 bool "Disable obsolete cpumask functions" if DEBUG_PER_CPU_MAPS 241 depends on EXPERIMENTAL && BROKEN 242 243config CPU_RMAP 244 bool 245 depends on SMP 246 247# 248# Netlink attribute parsing support is select'ed if needed 249# 250config NLATTR 251 bool 252 253# 254# Generic 64-bit atomic support is selected if needed 255# 256config GENERIC_ATOMIC64 257 bool 258 259config LRU_CACHE 260 tristate 261 262config AVERAGE 263 bool "Averaging functions" 264 help 265 This option is provided for the case where no in-kernel-tree 266 modules require averaging functions, but a module built outside 267 the kernel tree does. Such modules that use library averaging 268 functions require Y here. 269 270 If unsure, say N. 271 272config CORDIC 273 tristate "Cordic function" 274 help 275 The option provides arithmetic function using cordic algorithm 276 so its calculations are in fixed point. Modules can select this 277 when they require this function. Module will be called cordic. 278 279endmenu 280