diff options
Diffstat (limited to 'lib/Kconfig')
| -rw-r--r-- | lib/Kconfig | 281 |
1 files changed, 271 insertions, 10 deletions
diff --git a/lib/Kconfig b/lib/Kconfig index 3116aa631af..334f7722a99 100644 --- a/lib/Kconfig +++ b/lib/Kconfig @@ -16,15 +16,40 @@ config BITREVERSE config RATIONAL boolean +config GENERIC_STRNCPY_FROM_USER + bool + +config GENERIC_STRNLEN_USER + bool + +config GENERIC_NET_UTILS + bool + config GENERIC_FIND_FIRST_BIT bool -config GENERIC_FIND_NEXT_BIT +config NO_GENERIC_PCI_IOPORT_MAP bool -config GENERIC_FIND_LAST_BIT +config GENERIC_PCI_IOMAP + bool + +config GENERIC_IOMAP + bool + select GENERIC_PCI_IOMAP + +config GENERIC_IO + boolean + default n + +config STMP_DEVICE + bool + +config PERCPU_RWSEM + boolean + +config ARCH_USE_CMPXCHG_LOCKREF bool - default y config CRC_CCITT tristate "CRC-CCITT functions" @@ -44,6 +69,8 @@ config CRC16 config CRC_T10DIF tristate "CRC calculation for the T10 Data Integrity Field" + select CRYPTO + select CRYPTO_CRCT10DIF help This option is only needed if a module that's not in the kernel tree needs to calculate CRC checks for use with the @@ -58,14 +85,71 @@ config CRC_ITU_T functions require M here. config CRC32 - tristate "CRC32 functions" + tristate "CRC32/CRC32c functions" default y select BITREVERSE help This option is provided for the case where no in-kernel-tree - modules require CRC32 functions, but a module built outside the - kernel tree does. Such modules that use library CRC32 functions - require M here. + modules require CRC32/CRC32c functions, but a module built outside + the kernel tree does. Such modules that use library CRC32/CRC32c + functions require M here. + +config CRC32_SELFTEST + bool "CRC32 perform self test on init" + default n + depends on CRC32 + help + This option enables the CRC32 library functions to perform a + self test on initialization. The self test computes crc32_le + and crc32_be over byte strings with random alignment and length + and computes the total elapsed time and number of bytes processed. + +choice + prompt "CRC32 implementation" + depends on CRC32 + default CRC32_SLICEBY8 + help + This option allows a kernel builder to override the default choice + of CRC32 algorithm. Choose the default ("slice by 8") unless you + know that you need one of the others. + +config CRC32_SLICEBY8 + bool "Slice by 8 bytes" + help + Calculate checksum 8 bytes at a time with a clever slicing algorithm. + This is the fastest algorithm, but comes with a 8KiB lookup table. + Most modern processors have enough cache to hold this table without + thrashing the cache. + + This is the default implementation choice. Choose this one unless + you have a good reason not to. + +config CRC32_SLICEBY4 + bool "Slice by 4 bytes" + help + Calculate checksum 4 bytes at a time with a clever slicing algorithm. + This is a bit slower than slice by 8, but has a smaller 4KiB lookup + table. + + Only choose this option if you know what you are doing. + +config CRC32_SARWATE + bool "Sarwate's Algorithm (one byte at a time)" + help + Calculate checksum a byte at a time using Sarwate's algorithm. This + is not particularly fast, but has a small 256 byte lookup table. + + Only choose this option if you know what you are doing. + +config CRC32_BIT + bool "Classic Algorithm (one bit at a time)" + help + Calculate checksum one bit at a time. This is VERY slow, but has + no lookup table. This is provided as a debugging option. + + Only choose this option if you are debugging crc32. + +endchoice config CRC7 tristate "CRC7 functions" @@ -86,11 +170,34 @@ config LIBCRC32C require M here. See Castagnoli93. Module will be libcrc32c. +config CRC8 + tristate "CRC8 function" + help + This option provides CRC8 function. Drivers may select this + when they need to do cyclic redundancy check according CRC8 + algorithm. Module will be called crc8. + config AUDIT_GENERIC bool depends on AUDIT && !AUDIT_ARCH default y +config AUDIT_ARCH_COMPAT_GENERIC + bool + default n + +config AUDIT_COMPAT_GENERIC + bool + depends on AUDIT_GENERIC && AUDIT_ARCH_COMPAT_GENERIC && COMPAT + default y + +config RANDOM32_SELFTEST + bool "PRNG perform self test on init" + default n + help + This option enables the 32 bit PRNG library functions to perform a + self test on initialization. + # # compression support is select'ed if needed # @@ -106,6 +213,17 @@ config LZO_COMPRESS config LZO_DECOMPRESS tristate +config LZ4_COMPRESS + tristate + +config LZ4HC_COMPRESS + tristate + +config LZ4_DECOMPRESS + tristate + +source "lib/xz/Kconfig" + # # These all provide a common interface (hence the apparent duplication with # ZLIB_INFLATE; DECOMPRESS_GZIP is just a wrapper.) @@ -120,10 +238,18 @@ config DECOMPRESS_BZIP2 config DECOMPRESS_LZMA tristate +config DECOMPRESS_XZ + select XZ_DEC + tristate + config DECOMPRESS_LZO select LZO_DECOMPRESS tristate +config DECOMPRESS_LZ4 + select LZ4_DECOMPRESS + tristate + # # Generic allocator support is selected if needed # @@ -149,6 +275,45 @@ config REED_SOLOMON_DEC16 boolean # +# BCH support is selected if needed +# +config BCH + tristate + +config BCH_CONST_PARAMS + boolean + help + Drivers may select this option to force specific constant + values for parameters 'm' (Galois field order) and 't' + (error correction capability). Those specific values must + be set by declaring default values for symbols BCH_CONST_M + and BCH_CONST_T. + Doing so will enable extra compiler optimizations, + improving encoding and decoding performance up to 2x for + usual (m,t) values (typically such that m*t < 200). + When this option is selected, the BCH library supports + only a single (m,t) configuration. This is mainly useful + for NAND flash board drivers requiring known, fixed BCH + parameters. + +config BCH_CONST_M + int + range 5 15 + help + Constant value for Galois field order 'm'. If 'k' is the + number of data bits to protect, 'm' should be chosen such + that (k + m*t) <= 2**m - 1. + Drivers should declare a default value for this symbol if + they select option BCH_CONST_PARAMS. + +config BCH_CONST_T + int + help + Constant value for error correction capability in bits 't'. + Drivers should declare a default value for this symbol if + they select option BCH_CONST_PARAMS. + +# # Textsearch support is select'ed if needed # config TEXTSEARCH @@ -166,14 +331,43 @@ config TEXTSEARCH_FSM config BTREE boolean +config INTERVAL_TREE + boolean + help + Simple, embeddable, interval-tree. Can find the start of an + overlapping range in log(n) time and then iterate over all + overlapping nodes. The algorithm is implemented as an + augmented rbtree. + + See: + + Documentation/rbtree.txt + + for more information. + +config ASSOCIATIVE_ARRAY + bool + help + Generic associative array. Can be searched and iterated over whilst + it is being modified. It is also reasonably quick to search and + modify. The algorithms are non-recursive, and the trees are highly + capacious. + + See: + + Documentation/assoc_array.txt + + for more information. + config HAS_IOMEM boolean depends on !NO_IOMEM + select GENERIC_IO default y -config HAS_IOPORT +config HAS_IOPORT_MAP boolean - depends on HAS_IOMEM && !NO_IOPORT + depends on HAS_IOMEM && !NO_IOPORT_MAP default y config HAS_DMA @@ -193,7 +387,14 @@ config CPUMASK_OFFSTACK config DISABLE_OBSOLETE_CPUMASK_FUNCTIONS bool "Disable obsolete cpumask functions" if DEBUG_PER_CPU_MAPS - depends on EXPERIMENTAL && BROKEN + depends on BROKEN + +config CPU_RMAP + bool + depends on SMP + +config DQL + bool # # Netlink attribute parsing support is select'ed if needed @@ -207,10 +408,70 @@ config NLATTR config GENERIC_ATOMIC64 bool +config ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE + def_bool y if GENERIC_ATOMIC64 + config LRU_CACHE tristate config AVERAGE + bool "Averaging functions" + help + This option is provided for the case where no in-kernel-tree + modules require averaging functions, but a module built outside + the kernel tree does. Such modules that use library averaging + functions require Y here. + + If unsure, say N. + +config CLZ_TAB + bool + +config CORDIC + tristate "CORDIC algorithm" + help + This option provides an implementation of the CORDIC algorithm; + calculations are in fixed point. Module will be called cordic. + +config DDR + bool "JEDEC DDR data" + help + Data from JEDEC specs for DDR SDRAM memories, + particularly the AC timing parameters and addressing + information. This data is useful for drivers handling + DDR SDRAM controllers. + +config MPILIB + tristate + select CLZ_TAB + help + Multiprecision maths library from GnuPG. + It is used to implement RSA digital signature verification, + which is used by IMA/EVM digital signature extension. + +config SIGNATURE + tristate + depends on KEYS && CRYPTO + select CRYPTO_SHA1 + select MPILIB + help + Digital signature verification. Currently only RSA is supported. + Implementation is done using GnuPG MPI library + +# +# libfdt files, only selected if needed. +# +config LIBFDT bool +config OID_REGISTRY + tristate + help + Enable fast lookup object identifier registry. + +config UCS2_STRING + tristate + +source "lib/fonts/Kconfig" + endmenu |