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 GENERIC_PCI_IOMAP
  23         bool
  24
  25 config GENERIC_IOMAP
  26         bool
  27         select GENERIC_PCI_IOMAP
  28
  29 config CRC_CCITT
  30         tristate "CRC-CCITT functions"
  31         help
  32           This option is provided for the case where no in-kernel-tree
  33           modules require CRC-CCITT functions, but a module built outside
  34           the kernel tree does. Such modules that use library CRC-CCITT
  35           functions require M here.
  36
  37 config CRC16
  38         tristate "CRC16 functions"
  39         help
  40           This option is provided for the case where no in-kernel-tree
  41           modules require CRC16 functions, but a module built outside
  42           the kernel tree does. Such modules that use library CRC16
  43           functions require M here.
  44
  45 config CRC_T10DIF
  46         tristate "CRC calculation for the T10 Data Integrity Field"
  47         help
  48           This option is only needed if a module that's not in the
  49           kernel tree needs to calculate CRC checks for use with the
  50           SCSI data integrity subsystem.
  51
  52 config CRC_ITU_T
  53         tristate "CRC ITU-T V.41 functions"
  54         help
  55           This option is provided for the case where no in-kernel-tree
  56           modules require CRC ITU-T V.41 functions, but a module built outside
  57           the kernel tree does. Such modules that use library CRC ITU-T V.41
  58           functions require M here.
  59
  60 config CRC32
  61         tristate "CRC32 functions"
  62         default y
  63         select BITREVERSE
  64         help
  65           This option is provided for the case where no in-kernel-tree
  66           modules require CRC32 functions, but a module built outside the
  67           kernel tree does. Such modules that use library CRC32 functions
  68           require M here.
  69
  70 config CRC7
  71         tristate "CRC7 functions"
  72         help
  73           This option is provided for the case where no in-kernel-tree
  74           modules require CRC7 functions, but a module built outside
  75           the kernel tree does. Such modules that use library CRC7
  76           functions require M here.
  77
  78 config LIBCRC32C
  79         tristate "CRC32c (Castagnoli, et al) Cyclic Redundancy-Check"
  80         select CRYPTO
  81         select CRYPTO_CRC32C
  82         help
  83           This option is provided for the case where no in-kernel-tree
  84           modules require CRC32c functions, but a module built outside the
  85           kernel tree does. Such modules that use library CRC32c functions
  86           require M here.  See Castagnoli93.
  87           Module will be libcrc32c.
  88
  89 config CRC8
  90         tristate "CRC8 function"
  91         help
  92           This option provides CRC8 function. Drivers may select this
  93           when they need to do cyclic redundancy check according CRC8
  94           algorithm. Module will be called crc8.
  95
  96 config AUDIT_GENERIC
  97         bool
  98         depends on AUDIT && !AUDIT_ARCH
  99         default y
 100
 101 #
 102 # compression support is select'ed if needed
 103 #
 104 config ZLIB_INFLATE
 105         tristate
 106
 107 config ZLIB_DEFLATE
 108         tristate
 109
 110 config LZO_COMPRESS
 111         tristate
 112
 113 config LZO_DECOMPRESS
 114         tristate
 115
 116 source "lib/xz/Kconfig"
 117
 118 #
 119 # These all provide a common interface (hence the apparent duplication with
 120 # ZLIB_INFLATE; DECOMPRESS_GZIP is just a wrapper.)
 121 #
 122 config DECOMPRESS_GZIP
 123         select ZLIB_INFLATE
 124         tristate
 125
 126 config DECOMPRESS_BZIP2
 127         tristate
 128
 129 config DECOMPRESS_LZMA
 130         tristate
 131
 132 config DECOMPRESS_XZ
 133         select XZ_DEC
 134         tristate
 135
 136 config DECOMPRESS_LZO
 137         select LZO_DECOMPRESS
 138         tristate
 139
 140 #
 141 # Generic allocator support is selected if needed
 142 #
 143 config GENERIC_ALLOCATOR
 144         boolean
 145
 146 #
 147 # reed solomon support is select'ed if needed
 148 #
 149 config REED_SOLOMON
 150         tristate
 151
 152 config REED_SOLOMON_ENC8
 153         boolean
 154
 155 config REED_SOLOMON_DEC8
 156         boolean
 157
 158 config REED_SOLOMON_ENC16
 159         boolean
 160
 161 config REED_SOLOMON_DEC16
 162         boolean
 163
 164 #
 165 # BCH support is selected if needed
 166 #
 167 config BCH
 168         tristate
 169
 170 config BCH_CONST_PARAMS
 171         boolean
 172         help
 173           Drivers may select this option to force specific constant
 174           values for parameters 'm' (Galois field order) and 't'
 175           (error correction capability). Those specific values must
 176           be set by declaring default values for symbols BCH_CONST_M
 177           and BCH_CONST_T.
 178           Doing so will enable extra compiler optimizations,
 179           improving encoding and decoding performance up to 2x for
 180           usual (m,t) values (typically such that m*t < 200).
 181           When this option is selected, the BCH library supports
 182           only a single (m,t) configuration. This is mainly useful
 183           for NAND flash board drivers requiring known, fixed BCH
 184           parameters.
 185
 186 config BCH_CONST_M
 187         int
 188         range 5 15
 189         help
 190           Constant value for Galois field order 'm'. If 'k' is the
 191           number of data bits to protect, 'm' should be chosen such
 192           that (k + m*t) <= 2**m - 1.
 193           Drivers should declare a default value for this symbol if
 194           they select option BCH_CONST_PARAMS.
 195
 196 config BCH_CONST_T
 197         int
 198         help
 199           Constant value for error correction capability in bits 't'.
 200           Drivers should declare a default value for this symbol if
 201           they select option BCH_CONST_PARAMS.
 202
 203 #
 204 # Textsearch support is select'ed if needed
 205 #
 206 config TEXTSEARCH
 207         boolean
 208
 209 config TEXTSEARCH_KMP
 210         tristate
 211
 212 config TEXTSEARCH_BM
 213         tristate
 214
 215 config TEXTSEARCH_FSM
 216         tristate
 217
 218 config BTREE
 219         boolean
 220
 221 config HAS_IOMEM
 222         boolean
 223         depends on !NO_IOMEM
 224         default y
 225
 226 config HAS_IOPORT
 227         boolean
 228         depends on HAS_IOMEM && !NO_IOPORT
 229         default y
 230
 231 config HAS_DMA
 232         boolean
 233         depends on !NO_DMA
 234         default y
 235
 236 config CHECK_SIGNATURE
 237         bool
 238
 239 config CPUMASK_OFFSTACK
 240         bool "Force CPU masks off stack" if DEBUG_PER_CPU_MAPS
 241         help
 242           Use dynamic allocation for cpumask_var_t, instead of putting
 243           them on the stack.  This is a bit more expensive, but avoids
 244           stack overflow.
 245
 246 config DISABLE_OBSOLETE_CPUMASK_FUNCTIONS
 247        bool "Disable obsolete cpumask functions" if DEBUG_PER_CPU_MAPS
 248        depends on EXPERIMENTAL && BROKEN
 249
 250 config CPU_RMAP
 251         bool
 252         depends on SMP
 253
 254 #
 255 # Netlink attribute parsing support is select'ed if needed
 256 #
 257 config NLATTR
 258         bool
 259
 260 #
 261 # Generic 64-bit atomic support is selected if needed
 262 #
 263 config GENERIC_ATOMIC64
 264        bool
 265
 266 config LRU_CACHE
 267         tristate
 268
 269 config AVERAGE
 270         bool "Averaging functions"
 271         help
 272           This option is provided for the case where no in-kernel-tree
 273           modules require averaging functions, but a module built outside
 274           the kernel tree does. Such modules that use library averaging
 275           functions require Y here.
 276
 277           If unsure, say N.
 278
 279 config CORDIC
 280         tristate "Cordic function"
 281         help
 282           The option provides arithmetic function using cordic algorithm
 283           so its calculations are in fixed point. Modules can select this
 284           when they require this function. Module will be called cordic.
 285
 286 endmenu