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 AUDIT_GENERIC 83 bool 84 depends on AUDIT && !AUDIT_ARCH 85 default y 86 87# 88# compression support is select'ed if needed 89# 90config ZLIB_INFLATE 91 tristate 92 93config ZLIB_DEFLATE 94 tristate 95 96config LZO_COMPRESS 97 tristate 98 99config LZO_DECOMPRESS 100 tristate 101 102source "lib/xz/Kconfig" 103 104# 105# These all provide a common interface (hence the apparent duplication with 106# ZLIB_INFLATE; DECOMPRESS_GZIP is just a wrapper.) 107# 108config DECOMPRESS_GZIP 109 select ZLIB_INFLATE 110 tristate 111 112config DECOMPRESS_BZIP2 113 tristate 114 115config DECOMPRESS_LZMA 116 tristate 117 118config DECOMPRESS_XZ 119 select XZ_DEC 120 tristate 121 122config DECOMPRESS_LZO 123 select LZO_DECOMPRESS 124 tristate 125 126# 127# Generic allocator support is selected if needed 128# 129config GENERIC_ALLOCATOR 130 boolean 131 132# 133# reed solomon support is select'ed if needed 134# 135config REED_SOLOMON 136 tristate 137 138config REED_SOLOMON_ENC8 139 boolean 140 141config REED_SOLOMON_DEC8 142 boolean 143 144config REED_SOLOMON_ENC16 145 boolean 146 147config REED_SOLOMON_DEC16 148 boolean 149 150# 151# BCH support is selected if needed 152# 153config BCH 154 tristate 155 156config BCH_CONST_PARAMS 157 boolean 158 help 159 Drivers may select this option to force specific constant 160 values for parameters 'm' (Galois field order) and 't' 161 (error correction capability). Those specific values must 162 be set by declaring default values for symbols BCH_CONST_M 163 and BCH_CONST_T. 164 Doing so will enable extra compiler optimizations, 165 improving encoding and decoding performance up to 2x for 166 usual (m,t) values (typically such that m*t < 200). 167 When this option is selected, the BCH library supports 168 only a single (m,t) configuration. This is mainly useful 169 for NAND flash board drivers requiring known, fixed BCH 170 parameters. 171 172config BCH_CONST_M 173 int 174 range 5 15 175 help 176 Constant value for Galois field order 'm'. If 'k' is the 177 number of data bits to protect, 'm' should be chosen such 178 that (k + m*t) <= 2**m - 1. 179 Drivers should declare a default value for this symbol if 180 they select option BCH_CONST_PARAMS. 181 182config BCH_CONST_T 183 int 184 help 185 Constant value for error correction capability in bits 't'. 186 Drivers should declare a default value for this symbol if 187 they select option BCH_CONST_PARAMS. 188 189# 190# Textsearch support is select'ed if needed 191# 192config TEXTSEARCH 193 boolean 194 195config TEXTSEARCH_KMP 196 tristate 197 198config TEXTSEARCH_BM 199 tristate 200 201config TEXTSEARCH_FSM 202 tristate 203 204config BTREE 205 boolean 206 207config HAS_IOMEM 208 boolean 209 depends on !NO_IOMEM 210 default y 211 212config HAS_IOPORT 213 boolean 214 depends on HAS_IOMEM && !NO_IOPORT 215 default y 216 217config HAS_DMA 218 boolean 219 depends on !NO_DMA 220 default y 221 222config CHECK_SIGNATURE 223 bool 224 225config CPUMASK_OFFSTACK 226 bool "Force CPU masks off stack" if DEBUG_PER_CPU_MAPS 227 help 228 Use dynamic allocation for cpumask_var_t, instead of putting 229 them on the stack. This is a bit more expensive, but avoids 230 stack overflow. 231 232config DISABLE_OBSOLETE_CPUMASK_FUNCTIONS 233 bool "Disable obsolete cpumask functions" if DEBUG_PER_CPU_MAPS 234 depends on EXPERIMENTAL && BROKEN 235 236config CPU_RMAP 237 bool 238 depends on SMP 239 240# 241# Netlink attribute parsing support is select'ed if needed 242# 243config NLATTR 244 bool 245 246# 247# Generic 64-bit atomic support is selected if needed 248# 249config GENERIC_ATOMIC64 250 bool 251 252config LRU_CACHE 253 tristate 254 255config AVERAGE 256 bool "Averaging functions" 257 help 258 This option is provided for the case where no in-kernel-tree 259 modules require averaging functions, but a module built outside 260 the kernel tree does. Such modules that use library averaging 261 functions require Y here. 262 263 If unsure, say N. 264 265endmenu 266