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 AUDIT_GENERIC
  83         bool
  84         depends on AUDIT && !AUDIT_ARCH
  85         default y
  86
  87 #
  88 # compression support is select'ed if needed
  89 #
  90 config ZLIB_INFLATE
  91         tristate
  92
  93 config ZLIB_DEFLATE
  94         tristate
  95
  96 config LZO_COMPRESS
  97         tristate
  98
  99 config LZO_DECOMPRESS
 100         tristate
 101
 102 source "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 #
 108 config DECOMPRESS_GZIP
 109         select ZLIB_INFLATE
 110         tristate
 111
 112 config DECOMPRESS_BZIP2
 113         tristate
 114
 115 config DECOMPRESS_LZMA
 116         tristate
 117
 118 config DECOMPRESS_XZ
 119         select XZ_DEC
 120         tristate
 121
 122 config DECOMPRESS_LZO
 123         select LZO_DECOMPRESS
 124         tristate
 125
 126 #
 127 # Generic allocator support is selected if needed
 128 #
 129 config GENERIC_ALLOCATOR
 130         boolean
 131
 132 #
 133 # reed solomon support is select'ed if needed
 134 #
 135 config REED_SOLOMON
 136         tristate
 137
 138 config REED_SOLOMON_ENC8
 139         boolean
 140
 141 config REED_SOLOMON_DEC8
 142         boolean
 143
 144 config REED_SOLOMON_ENC16
 145         boolean
 146
 147 config REED_SOLOMON_DEC16
 148         boolean
 149
 150 #
 151 # BCH support is selected if needed
 152 #
 153 config BCH
 154         tristate
 155
 156 config 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
 172 config 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
 182 config 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 #
 192 config TEXTSEARCH
 193         boolean
 194
 195 config TEXTSEARCH_KMP
 196         tristate
 197
 198 config TEXTSEARCH_BM
 199         tristate
 200
 201 config TEXTSEARCH_FSM
 202         tristate
 203
 204 config BTREE
 205         boolean
 206
 207 config HAS_IOMEM
 208         boolean
 209         depends on !NO_IOMEM
 210         default y
 211
 212 config HAS_IOPORT
 213         boolean
 214         depends on HAS_IOMEM && !NO_IOPORT
 215         default y
 216
 217 config HAS_DMA
 218         boolean
 219         depends on !NO_DMA
 220         default y
 221
 222 config CHECK_SIGNATURE
 223         bool
 224
 225 config 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
 232 config DISABLE_OBSOLETE_CPUMASK_FUNCTIONS
 233        bool "Disable obsolete cpumask functions" if DEBUG_PER_CPU_MAPS
 234        depends on EXPERIMENTAL && BROKEN
 235
 236 config CPU_RMAP
 237         bool
 238         depends on SMP
 239
 240 #
 241 # Netlink attribute parsing support is select'ed if needed
 242 #
 243 config NLATTR
 244         bool
 245
 246 #
 247 # Generic 64-bit atomic support is selected if needed
 248 #
 249 config GENERIC_ATOMIC64
 250        bool
 251
 252 config LRU_CACHE
 253         tristate
 254
 255 config 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
 265 endmenu