421 lines
9.3 KiB
Plaintext
421 lines
9.3 KiB
Plaintext
#
|
|
# Library configuration
|
|
#
|
|
|
|
config BINARY_PRINTF
|
|
def_bool n
|
|
|
|
menu "Library routines"
|
|
|
|
config RAID6_PQ
|
|
tristate
|
|
|
|
config BITREVERSE
|
|
tristate
|
|
|
|
config RATIONAL
|
|
boolean
|
|
|
|
config GENERIC_STRNCPY_FROM_USER
|
|
bool
|
|
|
|
config GENERIC_STRNLEN_USER
|
|
bool
|
|
|
|
config GENERIC_FIND_FIRST_BIT
|
|
bool
|
|
|
|
config NO_GENERIC_PCI_IOPORT_MAP
|
|
bool
|
|
|
|
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
|
|
|
|
config CMPXCHG_LOCKREF
|
|
def_bool y if ARCH_USE_CMPXCHG_LOCKREF
|
|
depends on SMP
|
|
depends on !GENERIC_LOCKBREAK
|
|
depends on !DEBUG_SPINLOCK
|
|
depends on !DEBUG_LOCK_ALLOC
|
|
|
|
config CRC_CCITT
|
|
tristate "CRC-CCITT functions"
|
|
help
|
|
This option is provided for the case where no in-kernel-tree
|
|
modules require CRC-CCITT functions, but a module built outside
|
|
the kernel tree does. Such modules that use library CRC-CCITT
|
|
functions require M here.
|
|
|
|
config CRC16
|
|
tristate "CRC16 functions"
|
|
help
|
|
This option is provided for the case where no in-kernel-tree
|
|
modules require CRC16 functions, but a module built outside
|
|
the kernel tree does. Such modules that use library CRC16
|
|
functions require M here.
|
|
|
|
config CRC_T10DIF
|
|
tristate "CRC calculation for the T10 Data Integrity Field"
|
|
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
|
|
SCSI data integrity subsystem.
|
|
|
|
config CRC_ITU_T
|
|
tristate "CRC ITU-T V.41 functions"
|
|
help
|
|
This option is provided for the case where no in-kernel-tree
|
|
modules require CRC ITU-T V.41 functions, but a module built outside
|
|
the kernel tree does. Such modules that use library CRC ITU-T V.41
|
|
functions require M here.
|
|
|
|
config CRC32
|
|
tristate "CRC32/CRC32c functions"
|
|
default y
|
|
select BITREVERSE
|
|
help
|
|
This option is provided for the case where no in-kernel-tree
|
|
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"
|
|
help
|
|
This option is provided for the case where no in-kernel-tree
|
|
modules require CRC7 functions, but a module built outside
|
|
the kernel tree does. Such modules that use library CRC7
|
|
functions require M here.
|
|
|
|
config LIBCRC32C
|
|
tristate "CRC32c (Castagnoli, et al) Cyclic Redundancy-Check"
|
|
select CRYPTO
|
|
select CRYPTO_CRC32C
|
|
help
|
|
This option is provided for the case where no in-kernel-tree
|
|
modules require CRC32c functions, but a module built outside the
|
|
kernel tree does. Such modules that use library CRC32c functions
|
|
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
|
|
|
|
#
|
|
# compression support is select'ed if needed
|
|
#
|
|
config ZLIB_INFLATE
|
|
tristate
|
|
|
|
config ZLIB_DEFLATE
|
|
tristate
|
|
|
|
config LZO_COMPRESS
|
|
tristate
|
|
|
|
config LZO_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.)
|
|
#
|
|
config DECOMPRESS_GZIP
|
|
select ZLIB_INFLATE
|
|
tristate
|
|
|
|
config DECOMPRESS_BZIP2
|
|
tristate
|
|
|
|
config DECOMPRESS_LZMA
|
|
tristate
|
|
|
|
config DECOMPRESS_XZ
|
|
select XZ_DEC
|
|
tristate
|
|
|
|
config DECOMPRESS_LZO
|
|
select LZO_DECOMPRESS
|
|
tristate
|
|
|
|
#
|
|
# Generic allocator support is selected if needed
|
|
#
|
|
config GENERIC_ALLOCATOR
|
|
boolean
|
|
|
|
#
|
|
# reed solomon support is select'ed if needed
|
|
#
|
|
config REED_SOLOMON
|
|
tristate
|
|
|
|
config REED_SOLOMON_ENC8
|
|
boolean
|
|
|
|
config REED_SOLOMON_DEC8
|
|
boolean
|
|
|
|
config REED_SOLOMON_ENC16
|
|
boolean
|
|
|
|
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
|
|
boolean
|
|
|
|
config TEXTSEARCH_KMP
|
|
tristate
|
|
|
|
config TEXTSEARCH_BM
|
|
tristate
|
|
|
|
config TEXTSEARCH_FSM
|
|
tristate
|
|
|
|
config BTREE
|
|
boolean
|
|
|
|
config HAS_IOMEM
|
|
boolean
|
|
depends on !NO_IOMEM
|
|
select GENERIC_IO
|
|
default y
|
|
|
|
config HAS_IOPORT
|
|
boolean
|
|
depends on HAS_IOMEM && !NO_IOPORT
|
|
default y
|
|
|
|
config HAS_DMA
|
|
boolean
|
|
depends on !NO_DMA
|
|
default y
|
|
|
|
config CHECK_SIGNATURE
|
|
bool
|
|
|
|
config CPUMASK_OFFSTACK
|
|
bool "Force CPU masks off stack" if DEBUG_PER_CPU_MAPS
|
|
help
|
|
Use dynamic allocation for cpumask_var_t, instead of putting
|
|
them on the stack. This is a bit more expensive, but avoids
|
|
stack overflow.
|
|
|
|
config DISABLE_OBSOLETE_CPUMASK_FUNCTIONS
|
|
bool "Disable obsolete cpumask functions" if DEBUG_PER_CPU_MAPS
|
|
depends on BROKEN
|
|
|
|
config CPU_RMAP
|
|
bool
|
|
depends on SMP
|
|
|
|
config DQL
|
|
bool
|
|
|
|
#
|
|
# Netlink attribute parsing support is select'ed if needed
|
|
#
|
|
config NLATTR
|
|
bool
|
|
|
|
#
|
|
# Generic 64-bit atomic support is selected if needed
|
|
#
|
|
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
|
|
|
|
endmenu
|