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 GENERIC_IOMAP 23 bool 24 25config CRC_CCITT 26 tristate "CRC-CCITT functions" 27 help 28 This option is provided for the case where no in-kernel-tree 29 modules require CRC-CCITT functions, but a module built outside 30 the kernel tree does. Such modules that use library CRC-CCITT 31 functions require M here. 32 33config CRC16 34 tristate "CRC16 functions" 35 help 36 This option is provided for the case where no in-kernel-tree 37 modules require CRC16 functions, but a module built outside 38 the kernel tree does. Such modules that use library CRC16 39 functions require M here. 40 41config CRC_T10DIF 42 tristate "CRC calculation for the T10 Data Integrity Field" 43 help 44 This option is only needed if a module that's not in the 45 kernel tree needs to calculate CRC checks for use with the 46 SCSI data integrity subsystem. 47 48config CRC_ITU_T 49 tristate "CRC ITU-T V.41 functions" 50 help 51 This option is provided for the case where no in-kernel-tree 52 modules require CRC ITU-T V.41 functions, but a module built outside 53 the kernel tree does. Such modules that use library CRC ITU-T V.41 54 functions require M here. 55 56config CRC32 57 tristate "CRC32 functions" 58 default y 59 select BITREVERSE 60 help 61 This option is provided for the case where no in-kernel-tree 62 modules require CRC32 functions, but a module built outside the 63 kernel tree does. Such modules that use library CRC32 functions 64 require M here. 65 66config CRC7 67 tristate "CRC7 functions" 68 help 69 This option is provided for the case where no in-kernel-tree 70 modules require CRC7 functions, but a module built outside 71 the kernel tree does. Such modules that use library CRC7 72 functions require M here. 73 74config LIBCRC32C 75 tristate "CRC32c (Castagnoli, et al) Cyclic Redundancy-Check" 76 select CRYPTO 77 select CRYPTO_CRC32C 78 help 79 This option is provided for the case where no in-kernel-tree 80 modules require CRC32c functions, but a module built outside the 81 kernel tree does. Such modules that use library CRC32c functions 82 require M here. See Castagnoli93. 83 Module will be libcrc32c. 84 85config CRC8 86 tristate "CRC8 function" 87 help 88 This option provides CRC8 function. Drivers may select this 89 when they need to do cyclic redundancy check according CRC8 90 algorithm. Module will be called crc8. 91 92config AUDIT_GENERIC 93 bool 94 depends on AUDIT && !AUDIT_ARCH 95 default y 96 97# 98# compression support is select'ed if needed 99# 100config ZLIB_INFLATE 101 tristate 102 103config ZLIB_DEFLATE 104 tristate 105 106config LZO_COMPRESS 107 tristate 108 109config LZO_DECOMPRESS 110 tristate 111 112source "lib/xz/Kconfig" 113 114# 115# These all provide a common interface (hence the apparent duplication with 116# ZLIB_INFLATE; DECOMPRESS_GZIP is just a wrapper.) 117# 118config DECOMPRESS_GZIP 119 select ZLIB_INFLATE 120 tristate 121 122config DECOMPRESS_BZIP2 123 tristate 124 125config DECOMPRESS_LZMA 126 tristate 127 128config DECOMPRESS_XZ 129 select XZ_DEC 130 tristate 131 132config DECOMPRESS_LZO 133 select LZO_DECOMPRESS 134 tristate 135 136# 137# Generic allocator support is selected if needed 138# 139config GENERIC_ALLOCATOR 140 boolean 141 142# 143# reed solomon support is select'ed if needed 144# 145config REED_SOLOMON 146 tristate 147 148config REED_SOLOMON_ENC8 149 boolean 150 151config REED_SOLOMON_DEC8 152 boolean 153 154config REED_SOLOMON_ENC16 155 boolean 156 157config REED_SOLOMON_DEC16 158 boolean 159 160# 161# BCH support is selected if needed 162# 163config BCH 164 tristate 165 166config BCH_CONST_PARAMS 167 boolean 168 help 169 Drivers may select this option to force specific constant 170 values for parameters 'm' (Galois field order) and 't' 171 (error correction capability). Those specific values must 172 be set by declaring default values for symbols BCH_CONST_M 173 and BCH_CONST_T. 174 Doing so will enable extra compiler optimizations, 175 improving encoding and decoding performance up to 2x for 176 usual (m,t) values (typically such that m*t < 200). 177 When this option is selected, the BCH library supports 178 only a single (m,t) configuration. This is mainly useful 179 for NAND flash board drivers requiring known, fixed BCH 180 parameters. 181 182config BCH_CONST_M 183 int 184 range 5 15 185 help 186 Constant value for Galois field order 'm'. If 'k' is the 187 number of data bits to protect, 'm' should be chosen such 188 that (k + m*t) <= 2**m - 1. 189 Drivers should declare a default value for this symbol if 190 they select option BCH_CONST_PARAMS. 191 192config BCH_CONST_T 193 int 194 help 195 Constant value for error correction capability in bits 't'. 196 Drivers should declare a default value for this symbol if 197 they select option BCH_CONST_PARAMS. 198 199# 200# Textsearch support is select'ed if needed 201# 202config TEXTSEARCH 203 boolean 204 205config TEXTSEARCH_KMP 206 tristate 207 208config TEXTSEARCH_BM 209 tristate 210 211config TEXTSEARCH_FSM 212 tristate 213 214config BTREE 215 boolean 216 217config HAS_IOMEM 218 boolean 219 depends on !NO_IOMEM 220 default y 221 222config HAS_IOPORT 223 boolean 224 depends on HAS_IOMEM && !NO_IOPORT 225 default y 226 227config HAS_DMA 228 boolean 229 depends on !NO_DMA 230 default y 231 232config CHECK_SIGNATURE 233 bool 234 235config CPUMASK_OFFSTACK 236 bool "Force CPU masks off stack" if DEBUG_PER_CPU_MAPS 237 help 238 Use dynamic allocation for cpumask_var_t, instead of putting 239 them on the stack. This is a bit more expensive, but avoids 240 stack overflow. 241 242config DISABLE_OBSOLETE_CPUMASK_FUNCTIONS 243 bool "Disable obsolete cpumask functions" if DEBUG_PER_CPU_MAPS 244 depends on EXPERIMENTAL && BROKEN 245 246config CPU_RMAP 247 bool 248 depends on SMP 249 250# 251# Netlink attribute parsing support is select'ed if needed 252# 253config NLATTR 254 bool 255 256# 257# Generic 64-bit atomic support is selected if needed 258# 259config GENERIC_ATOMIC64 260 bool 261 262config LRU_CACHE 263 tristate 264 265config AVERAGE 266 bool "Averaging functions" 267 help 268 This option is provided for the case where no in-kernel-tree 269 modules require averaging functions, but a module built outside 270 the kernel tree does. Such modules that use library averaging 271 functions require Y here. 272 273 If unsure, say N. 274 275config CORDIC 276 tristate "Cordic function" 277 help 278 The option provides arithmetic function using cordic algorithm 279 so its calculations are in fixed point. Modules can select this 280 when they require this function. Module will be called cordic. 281 282endmenu 283