[thirdparty/linux.git] / lib / Kconfig

#
# Library configuration
#

config BINARY_PRINTF
	def_bool n

menu "Library routines"

config RAID6_PQ
	tristate

config BITREVERSE
	tristate

config RATIONAL
	boolean

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 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 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.

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.

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
	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 EXPERIMENTAL && 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 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 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 MPILIB_EXTRA
	bool
	depends on MPILIB
	help
	  Additional sources of multiprecision maths library from GnuPG.
	  This code is unnecessary for RSA digital signature verification,
	  but can be compiled if needed.

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

endmenu
Commit	Line	Data
1da177e4 LT	1	#
	2	# Library configuration
	3	#
	4
4370aa4a LJ	5	config BINARY_PRINTF
	6	def_bool n
	7
1da177e4 LT	8	menu "Library routines"
1da177e4 LT	9
f5e70d0f DW	10	config RAID6_PQ
	11	tristate
	12
a5cfc1ec AM	13	config BITREVERSE
	14	tristate
	15
8759ef32 OS	16	config RATIONAL
	17	boolean
	18
19870def	19	config GENERIC_FIND_FIRST_BIT
9ba16087	20	bool
19870def	21
b923650b MT	22	config NO_GENERIC_PCI_IOPORT_MAP
	23	bool
	24
66eab4df MT	25	config GENERIC_PCI_IOMAP
	26	bool
	27
4673ca8e MT	28	config GENERIC_IOMAP
4673ca8e MT	29	bool
66eab4df	30	select GENERIC_PCI_IOMAP
4673ca8e	31
1da177e4 LT	32	config CRC_CCITT
	33	tristate "CRC-CCITT functions"
	34	help
	35	This option is provided for the case where no in-kernel-tree
	36	modules require CRC-CCITT functions, but a module built outside
	37	the kernel tree does. Such modules that use library CRC-CCITT
	38	functions require M here.
	39
7657ec1f EP	40	config CRC16
	41	tristate "CRC16 functions"
	42	help
	43	This option is provided for the case where no in-kernel-tree
	44	modules require CRC16 functions, but a module built outside
	45	the kernel tree does. Such modules that use library CRC16
	46	functions require M here.
	47
f11f594e MP	48	config CRC_T10DIF
	49	tristate "CRC calculation for the T10 Data Integrity Field"
	50	help
	51	This option is only needed if a module that's not in the
	52	kernel tree needs to calculate CRC checks for use with the
	53	SCSI data integrity subsystem.
	54
3e7cbae7 ID	55	config CRC_ITU_T
	56	tristate "CRC ITU-T V.41 functions"
	57	help
	58	This option is provided for the case where no in-kernel-tree
	59	modules require CRC ITU-T V.41 functions, but a module built outside
	60	the kernel tree does. Such modules that use library CRC ITU-T V.41
	61	functions require M here.
	62
1da177e4 LT	63	config CRC32
	64	tristate "CRC32 functions"
	65	default y
906d66df	66	select BITREVERSE
1da177e4 LT	67	help
	68	This option is provided for the case where no in-kernel-tree
	69	modules require CRC32 functions, but a module built outside the
	70	kernel tree does. Such modules that use library CRC32 functions
	71	require M here.
	72
3863ef31 BP	73	config CRC32_SELFTEST
	74	bool "CRC32 perform self test on init"
	75	default n
	76	depends on CRC32
	77	help
	78	This option enables the CRC32 library functions to perform a
	79	self test on initialization. The self test computes crc32_le
	80	and crc32_be over byte strings with random alignment and length
	81	and computes the total elapsed time and number of bytes processed.
	82
ad241528 JN	83	config CRC7
	84	tristate "CRC7 functions"
	85	help
	86	This option is provided for the case where no in-kernel-tree
	87	modules require CRC7 functions, but a module built outside
	88	the kernel tree does. Such modules that use library CRC7
	89	functions require M here.
	90
1da177e4 LT	91	config LIBCRC32C
1da177e4 LT	92	tristate "CRC32c (Castagnoli, et al) Cyclic Redundancy-Check"
93027354	93	select CRYPTO
69c35efc	94	select CRYPTO_CRC32C
1da177e4 LT	95	help
	96	This option is provided for the case where no in-kernel-tree
	97	modules require CRC32c functions, but a module built outside the
	98	kernel tree does. Such modules that use library CRC32c functions
	99	require M here. See Castagnoli93.
	100	Module will be libcrc32c.
	101
7150962d AS	102	config CRC8
	103	tristate "CRC8 function"
	104	help
	105	This option provides CRC8 function. Drivers may select this
	106	when they need to do cyclic redundancy check according CRC8
	107	algorithm. Module will be called crc8.
	108
e65e1fc2 AV	109	config AUDIT_GENERIC
	110	bool
	111	depends on AUDIT && !AUDIT_ARCH
	112	default y
	113
1da177e4 LT	114	#
	115	# compression support is select'ed if needed
	116	#
	117	config ZLIB_INFLATE
	118	tristate
	119
	120	config ZLIB_DEFLATE
	121	tristate
	122
64c70b1c RP	123	config LZO_COMPRESS
	124	tristate
	125
	126	config LZO_DECOMPRESS
	127	tristate
	128
24fa0402 LC	129	source "lib/xz/Kconfig"
24fa0402 LC	130
c8531ab3 PA	131	#
	132	# These all provide a common interface (hence the apparent duplication with
	133	# ZLIB_INFLATE; DECOMPRESS_GZIP is just a wrapper.)
	134	#
	135	config DECOMPRESS_GZIP
7856a16e	136	select ZLIB_INFLATE
c8531ab3 PA	137	tristate
	138
	139	config DECOMPRESS_BZIP2
	140	tristate
	141
	142	config DECOMPRESS_LZMA
	143	tristate
	144
3ebe1243 LC	145	config DECOMPRESS_XZ
	146	select XZ_DEC
	147	tristate
	148
cacb246f AT	149	config DECOMPRESS_LZO
	150	select LZO_DECOMPRESS
	151	tristate
	152
f14f75b8 JS	153	#
	154	# Generic allocator support is selected if needed
	155	#
	156	config GENERIC_ALLOCATOR
	157	boolean
	158
1da177e4 LT	159	#
	160	# reed solomon support is select'ed if needed
	161	#
	162	config REED_SOLOMON
	163	tristate
	164
	165	config REED_SOLOMON_ENC8
	166	boolean
	167
	168	config REED_SOLOMON_DEC8
	169	boolean
	170
	171	config REED_SOLOMON_ENC16
	172	boolean
	173
	174	config REED_SOLOMON_DEC16
	175	boolean
	176
437aa565 ID	177	#
	178	# BCH support is selected if needed
	179	#
	180	config BCH
	181	tristate
	182
	183	config BCH_CONST_PARAMS
	184	boolean
	185	help
	186	Drivers may select this option to force specific constant
	187	values for parameters 'm' (Galois field order) and 't'
	188	(error correction capability). Those specific values must
	189	be set by declaring default values for symbols BCH_CONST_M
	190	and BCH_CONST_T.
	191	Doing so will enable extra compiler optimizations,
	192	improving encoding and decoding performance up to 2x for
	193	usual (m,t) values (typically such that m*t < 200).
	194	When this option is selected, the BCH library supports
	195	only a single (m,t) configuration. This is mainly useful
	196	for NAND flash board drivers requiring known, fixed BCH
	197	parameters.
	198
	199	config BCH_CONST_M
	200	int
	201	range 5 15
	202	help
	203	Constant value for Galois field order 'm'. If 'k' is the
	204	number of data bits to protect, 'm' should be chosen such
	205	that (k + mt) <= 2*m - 1.
	206	Drivers should declare a default value for this symbol if
	207	they select option BCH_CONST_PARAMS.
	208
	209	config BCH_CONST_T
	210	int
	211	help
	212	Constant value for error correction capability in bits 't'.
	213	Drivers should declare a default value for this symbol if
	214	they select option BCH_CONST_PARAMS.
	215
f7704347 DM	216	#
	217	# Textsearch support is select'ed if needed
	218	#
2de4ff7b	219	config TEXTSEARCH
f7704347	220	boolean
1da177e4	221
df3fb93a	222	config TEXTSEARCH_KMP
f7704347	223	tristate
df3fb93a	224
8082e4ed	225	config TEXTSEARCH_BM
29cb9f9c	226	tristate
8082e4ed	227
6408f79c	228	config TEXTSEARCH_FSM
f7704347	229	tristate
6408f79c	230
5db53f3e JE	231	config BTREE
	232	boolean
	233
5ea81769	234	config HAS_IOMEM
ee36c2bf	235	boolean
5ea81769 AV	236	depends on !NO_IOMEM
	237	default y
	238
	239	config HAS_IOPORT
	240	boolean
	241	depends on HAS_IOMEM && !NO_IOPORT
ee36c2bf AV	242	default y
ee36c2bf AV	243
411f0f3e HC	244	config HAS_DMA
	245	boolean
	246	depends on !NO_DMA
	247	default y
	248
928923c7 GU	249	config CHECK_SIGNATURE
	250	bool
	251
aab46da0 RR	252	config CPUMASK_OFFSTACK
	253	bool "Force CPU masks off stack" if DEBUG_PER_CPU_MAPS
	254	help
	255	Use dynamic allocation for cpumask_var_t, instead of putting
	256	them on the stack. This is a bit more expensive, but avoids
	257	stack overflow.
	258
8c384cde RR	259	config DISABLE_OBSOLETE_CPUMASK_FUNCTIONS
	260	bool "Disable obsolete cpumask functions" if DEBUG_PER_CPU_MAPS
	261	depends on EXPERIMENTAL && BROKEN
	262
c39649c3 BH	263	config CPU_RMAP
	264	bool
	265	depends on SMP
	266
75957ba3 TH	267	config DQL
	268	bool
	269
e9cc8bdd GU	270	#
	271	# Netlink attribute parsing support is select'ed if needed
	272	#
	273	config NLATTR
	274	bool
	275
09d4e0ed PM	276	#
	277	# Generic 64-bit atomic support is selected if needed
	278	#
	279	config GENERIC_ATOMIC64
	280	bool
	281
b411b363 PR	282	config LRU_CACHE
	283	tristate
	284
c5485a7e	285	config AVERAGE
a7a9a24d MB	286	bool "Averaging functions"
	287	help
	288	This option is provided for the case where no in-kernel-tree
	289	modules require averaging functions, but a module built outside
	290	the kernel tree does. Such modules that use library averaging
	291	functions require Y here.
	292
	293	If unsure, say N.
c5485a7e	294
c6df4b17 DM	295	config CLZ_TAB
	296	bool
	297
10f8113e	298	config CORDIC
d89ce936	299	tristate "CORDIC algorithm"
10f8113e	300	help
435a95c5 MW	301	This option provides an implementation of the CORDIC algorithm;
435a95c5 MW	302	calculations are in fixed point. Module will be called cordic.
10f8113e	303
d9c46b18	304	config MPILIB
2e5f094b	305	tristate
c6df4b17	306	select CLZ_TAB
d9c46b18 DK	307	help
	308	Multiprecision maths library from GnuPG.
	309	It is used to implement RSA digital signature verification,
	310	which is used by IMA/EVM digital signature extension.
	311
7e8dec91	312	config MPILIB_EXTRA
2e5f094b	313	bool
7e8dec91 DK	314	depends on MPILIB
7e8dec91 DK	315	help
68adcad5 DK	316	Additional sources of multiprecision maths library from GnuPG.
	317	This code is unnecessary for RSA digital signature verification,
	318	but can be compiled if needed.
7e8dec91	319
5e8898e9	320	config SIGNATURE
2e5f094b	321	tristate
be440ec7 DK	322	depends on KEYS && CRYPTO
be440ec7 DK	323	select CRYPTO_SHA1
051dbb91 DK	324	select MPILIB
	325	help
	326	Digital signature verification. Currently only RSA is supported.
	327	Implementation is done using GnuPG MPI library
	328
2de4ff7b	329	endmenu