lib/Kconfig

   1 #
   2 # Library configuration
   3 #
   4
   5 config BINARY_PRINTF
   6         def_bool n
   7
   8 menu "Library routines"
   9
  10 config RAID6_PQ
  11         tristate
  12
  13 config BITREVERSE
  14         tristate
  15
  16 config RATIONAL
  17         boolean
  18
  19 config GENERIC_FIND_FIRST_BIT
  20         bool
  21
  22 config 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
  30 config 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
  38 config 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
  45 config 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
  53 config 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
  63 config 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
  71 config 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
  82 config 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
  89 config AUDIT_GENERIC
  90         bool
  91         depends on AUDIT && !AUDIT_ARCH
  92         default y
  93
  94 #
  95 # compression support is select'ed if needed
  96 #
  97 config ZLIB_INFLATE
  98         tristate
  99
 100 config ZLIB_DEFLATE
 101         tristate
 102
 103 config LZO_COMPRESS
 104         tristate
 105
 106 config LZO_DECOMPRESS
 107         tristate
 108
 109 source "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 #
 115 config DECOMPRESS_GZIP
 116         select ZLIB_INFLATE
 117         tristate
 118
 119 config DECOMPRESS_BZIP2
 120         tristate
 121
 122 config DECOMPRESS_LZMA
 123         tristate
 124
 125 config DECOMPRESS_XZ
 126         select XZ_DEC
 127         tristate
 128
 129 config DECOMPRESS_LZO
 130         select LZO_DECOMPRESS
 131         tristate
 132
 133 #
 134 # Generic allocator support is selected if needed
 135 #
 136 config GENERIC_ALLOCATOR
 137         boolean
 138
 139 #
 140 # reed solomon support is select'ed if needed
 141 #
 142 config REED_SOLOMON
 143         tristate
 144
 145 config REED_SOLOMON_ENC8
 146         boolean
 147
 148 config REED_SOLOMON_DEC8
 149         boolean
 150
 151 config REED_SOLOMON_ENC16
 152         boolean
 153
 154 config REED_SOLOMON_DEC16
 155         boolean
 156
 157 #
 158 # BCH support is selected if needed
 159 #
 160 config BCH
 161         tristate
 162
 163 config 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
 179 config 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
 189 config 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 #
 199 config TEXTSEARCH
 200         boolean
 201
 202 config TEXTSEARCH_KMP
 203         tristate
 204
 205 config TEXTSEARCH_BM
 206         tristate
 207
 208 config TEXTSEARCH_FSM
 209         tristate
 210
 211 config BTREE
 212         boolean
 213
 214 config HAS_IOMEM
 215         boolean
 216         depends on !NO_IOMEM
 217         default y
 218
 219 config HAS_IOPORT
 220         boolean
 221         depends on HAS_IOMEM && !NO_IOPORT
 222         default y
 223
 224 config HAS_DMA
 225         boolean
 226         depends on !NO_DMA
 227         default y
 228
 229 config CHECK_SIGNATURE
 230         bool
 231
 232 config 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
 239 config DISABLE_OBSOLETE_CPUMASK_FUNCTIONS
 240        bool "Disable obsolete cpumask functions" if DEBUG_PER_CPU_MAPS
 241        depends on EXPERIMENTAL && BROKEN
 242
 243 config CPU_RMAP
 244         bool
 245         depends on SMP
 246
 247 #
 248 # Netlink attribute parsing support is select'ed if needed
 249 #
 250 config NLATTR
 251         bool
 252
 253 #
 254 # Generic 64-bit atomic support is selected if needed
 255 #
 256 config GENERIC_ATOMIC64
 257        bool
 258
 259 config LRU_CACHE
 260         tristate
 261
 262 config 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
 272 config 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
 279 endmenu