[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_STRNCPY_FROM_USER
	bool

config GENERIC_STRNLEN_USER
	bool

config GENERIC_NET_UTILS
	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 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"
	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
	  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

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
#
config ZLIB_INFLATE
	tristate

config ZLIB_DEFLATE
	tristate

config LZO_COMPRESS
	tristate

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.)
#
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

config DECOMPRESS_LZ4
	select LZ4_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 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_MAP
	boolean
	depends on HAS_IOMEM && !NO_IOPORT_MAP
	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

config GLOB
	bool
#	This actually supports modular compilation, but the module overhead
#	is ridiculous for the amount of code involved.	Until an out-of-tree
#	driver asks for it, we'll just link it directly it into the kernel
#	when required.  Since we're ignoring out-of-tree users,	there's also
#	no need bother prompting for a manual decision:
#	prompt "glob_match() function"
	help
	  This option provides a glob_match function for performing
	  simple text pattern matching.  It originated in the ATA code
	  to blacklist particular drive models, but other device drivers
	  may need similar functionality.

	  All drivers in the Linux kernel tree that require this function
	  should automatically select this option.  Say N unless you
	  are compiling an out-of tree driver which tells you that it
	  depends on this.

config GLOB_SELFTEST
	bool "glob self-test on init"
	default n
	depends on GLOB
	help
	  This option enables a simple self-test of the glob_match
	  function on startup.	It is primarily useful for people
	  working on the code to ensure they haven't introduced any
	  regressions.

	  It only adds a little bit of code and slows kernel boot (or
	  module load) by a small amount, so you're welcome to play with
	  it, but you probably don't need it.

#
# 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
	select 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"

#
# sg chaining option
#

config ARCH_HAS_SG_CHAIN
	def_bool n

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
2922585b DM	19	config GENERIC_STRNCPY_FROM_USER
	20	bool
	21
a08c5356 LT	22	config GENERIC_STRNLEN_USER
	23	bool
	24
4cd5773a AS	25	config GENERIC_NET_UTILS
	26	bool
	27
19870def	28	config GENERIC_FIND_FIRST_BIT
9ba16087	29	bool
19870def	30
b923650b MT	31	config NO_GENERIC_PCI_IOPORT_MAP
	32	bool
	33
66eab4df MT	34	config GENERIC_PCI_IOMAP
	35	bool
	36
4673ca8e MT	37	config GENERIC_IOMAP
4673ca8e MT	38	bool
66eab4df	39	select GENERIC_PCI_IOMAP
4673ca8e	40
087fafd1 RW	41	config GENERIC_IO
	42	boolean
	43	default n
	44
4ccf4bea WS	45	config STMP_DEVICE
	46	bool
	47
22b361d1 ON	48	config PERCPU_RWSEM
	49	boolean
	50
bc08b449 LT	51	config ARCH_USE_CMPXCHG_LOCKREF
	52	bool
	53
1da177e4 LT	54	config CRC_CCITT
	55	tristate "CRC-CCITT functions"
	56	help
	57	This option is provided for the case where no in-kernel-tree
	58	modules require CRC-CCITT functions, but a module built outside
	59	the kernel tree does. Such modules that use library CRC-CCITT
	60	functions require M here.
	61
7657ec1f EP	62	config CRC16
	63	tristate "CRC16 functions"
	64	help
	65	This option is provided for the case where no in-kernel-tree
	66	modules require CRC16 functions, but a module built outside
	67	the kernel tree does. Such modules that use library CRC16
	68	functions require M here.
	69
f11f594e MP	70	config CRC_T10DIF
f11f594e MP	71	tristate "CRC calculation for the T10 Data Integrity Field"
68411521 HX	72	select CRYPTO
68411521 HX	73	select CRYPTO_CRCT10DIF
f11f594e MP	74	help
	75	This option is only needed if a module that's not in the
	76	kernel tree needs to calculate CRC checks for use with the
	77	SCSI data integrity subsystem.
	78
3e7cbae7 ID	79	config CRC_ITU_T
	80	tristate "CRC ITU-T V.41 functions"
	81	help
	82	This option is provided for the case where no in-kernel-tree
	83	modules require CRC ITU-T V.41 functions, but a module built outside
	84	the kernel tree does. Such modules that use library CRC ITU-T V.41
	85	functions require M here.
	86
1da177e4	87	config CRC32
46c5801e	88	tristate "CRC32/CRC32c functions"
1da177e4	89	default y
906d66df	90	select BITREVERSE
1da177e4 LT	91	help
1da177e4 LT	92	This option is provided for the case where no in-kernel-tree
46c5801e DW	93	modules require CRC32/CRC32c functions, but a module built outside
	94	the kernel tree does. Such modules that use library CRC32/CRC32c
	95	functions require M here.
1da177e4	96
3863ef31 BP	97	config CRC32_SELFTEST
	98	bool "CRC32 perform self test on init"
	99	default n
	100	depends on CRC32
	101	help
	102	This option enables the CRC32 library functions to perform a
	103	self test on initialization. The self test computes crc32_le
	104	and crc32_be over byte strings with random alignment and length
	105	and computes the total elapsed time and number of bytes processed.
	106
5cde7656 DW	107	choice
	108	prompt "CRC32 implementation"
	109	depends on CRC32
	110	default CRC32_SLICEBY8
82edb4ba DW	111	help
	112	This option allows a kernel builder to override the default choice
	113	of CRC32 algorithm. Choose the default ("slice by 8") unless you
	114	know that you need one of the others.
5cde7656 DW	115
	116	config CRC32_SLICEBY8
	117	bool "Slice by 8 bytes"
	118	help
	119	Calculate checksum 8 bytes at a time with a clever slicing algorithm.
	120	This is the fastest algorithm, but comes with a 8KiB lookup table.
	121	Most modern processors have enough cache to hold this table without
	122	thrashing the cache.
	123
	124	This is the default implementation choice. Choose this one unless
	125	you have a good reason not to.
	126
	127	config CRC32_SLICEBY4
	128	bool "Slice by 4 bytes"
	129	help
	130	Calculate checksum 4 bytes at a time with a clever slicing algorithm.
	131	This is a bit slower than slice by 8, but has a smaller 4KiB lookup
	132	table.
	133
	134	Only choose this option if you know what you are doing.
	135
	136	config CRC32_SARWATE
	137	bool "Sarwate's Algorithm (one byte at a time)"
	138	help
	139	Calculate checksum a byte at a time using Sarwate's algorithm. This
	140	is not particularly fast, but has a small 256 byte lookup table.
	141
	142	Only choose this option if you know what you are doing.
	143
	144	config CRC32_BIT
	145	bool "Classic Algorithm (one bit at a time)"
	146	help
	147	Calculate checksum one bit at a time. This is VERY slow, but has
	148	no lookup table. This is provided as a debugging option.
	149
	150	Only choose this option if you are debugging crc32.
	151
	152	endchoice
	153
ad241528 JN	154	config CRC7
	155	tristate "CRC7 functions"
	156	help
	157	This option is provided for the case where no in-kernel-tree
	158	modules require CRC7 functions, but a module built outside
	159	the kernel tree does. Such modules that use library CRC7
	160	functions require M here.
	161
1da177e4 LT	162	config LIBCRC32C
1da177e4 LT	163	tristate "CRC32c (Castagnoli, et al) Cyclic Redundancy-Check"
93027354	164	select CRYPTO
69c35efc	165	select CRYPTO_CRC32C
1da177e4 LT	166	help
	167	This option is provided for the case where no in-kernel-tree
	168	modules require CRC32c functions, but a module built outside the
	169	kernel tree does. Such modules that use library CRC32c functions
	170	require M here. See Castagnoli93.
	171	Module will be libcrc32c.
	172
7150962d AS	173	config CRC8
	174	tristate "CRC8 function"
	175	help
	176	This option provides CRC8 function. Drivers may select this
	177	when they need to do cyclic redundancy check according CRC8
	178	algorithm. Module will be called crc8.
	179
e65e1fc2 AV	180	config AUDIT_GENERIC
	181	bool
	182	depends on AUDIT && !AUDIT_ARCH
	183	default y
	184
4b588411 AT	185	config AUDIT_ARCH_COMPAT_GENERIC
	186	bool
	187	default n
	188
	189	config AUDIT_COMPAT_GENERIC
	190	bool
	191	depends on AUDIT_GENERIC && AUDIT_ARCH_COMPAT_GENERIC && COMPAT
	192	default y
	193
a6a9c0f1 DB	194	config RANDOM32_SELFTEST
	195	bool "PRNG perform self test on init"
	196	default n
	197	help
	198	This option enables the 32 bit PRNG library functions to perform a
	199	self test on initialization.
	200
1da177e4 LT	201	#
	202	# compression support is select'ed if needed
	203	#
	204	config ZLIB_INFLATE
	205	tristate
	206
	207	config ZLIB_DEFLATE
	208	tristate
	209
64c70b1c RP	210	config LZO_COMPRESS
	211	tristate
	212
	213	config LZO_DECOMPRESS
	214	tristate
	215
c72ac7a1 CM	216	config LZ4_COMPRESS
	217	tristate
	218
	219	config LZ4HC_COMPRESS
	220	tristate
	221
e76e1fdf KL	222	config LZ4_DECOMPRESS
	223	tristate
	224
24fa0402 LC	225	source "lib/xz/Kconfig"
24fa0402 LC	226
c8531ab3 PA	227	#
	228	# These all provide a common interface (hence the apparent duplication with
	229	# ZLIB_INFLATE; DECOMPRESS_GZIP is just a wrapper.)
	230	#
	231	config DECOMPRESS_GZIP
7856a16e	232	select ZLIB_INFLATE
c8531ab3 PA	233	tristate
	234
	235	config DECOMPRESS_BZIP2
	236	tristate
	237
	238	config DECOMPRESS_LZMA
	239	tristate
	240
3ebe1243 LC	241	config DECOMPRESS_XZ
	242	select XZ_DEC
	243	tristate
	244
cacb246f AT	245	config DECOMPRESS_LZO
	246	select LZO_DECOMPRESS
	247	tristate
	248
e76e1fdf KL	249	config DECOMPRESS_LZ4
	250	select LZ4_DECOMPRESS
	251	tristate
	252
f14f75b8 JS	253	#
	254	# Generic allocator support is selected if needed
	255	#
	256	config GENERIC_ALLOCATOR
	257	boolean
	258
1da177e4 LT	259	#
	260	# reed solomon support is select'ed if needed
	261	#
	262	config REED_SOLOMON
	263	tristate
	264
	265	config REED_SOLOMON_ENC8
	266	boolean
	267
	268	config REED_SOLOMON_DEC8
	269	boolean
	270
	271	config REED_SOLOMON_ENC16
	272	boolean
	273
	274	config REED_SOLOMON_DEC16
	275	boolean
	276
437aa565 ID	277	#
	278	# BCH support is selected if needed
	279	#
	280	config BCH
	281	tristate
	282
	283	config BCH_CONST_PARAMS
	284	boolean
	285	help
	286	Drivers may select this option to force specific constant
	287	values for parameters 'm' (Galois field order) and 't'
	288	(error correction capability). Those specific values must
	289	be set by declaring default values for symbols BCH_CONST_M
	290	and BCH_CONST_T.
	291	Doing so will enable extra compiler optimizations,
	292	improving encoding and decoding performance up to 2x for
	293	usual (m,t) values (typically such that m*t < 200).
	294	When this option is selected, the BCH library supports
	295	only a single (m,t) configuration. This is mainly useful
	296	for NAND flash board drivers requiring known, fixed BCH
	297	parameters.
	298
	299	config BCH_CONST_M
	300	int
	301	range 5 15
	302	help
	303	Constant value for Galois field order 'm'. If 'k' is the
	304	number of data bits to protect, 'm' should be chosen such
	305	that (k + mt) <= 2*m - 1.
	306	Drivers should declare a default value for this symbol if
	307	they select option BCH_CONST_PARAMS.
	308
	309	config BCH_CONST_T
	310	int
	311	help
	312	Constant value for error correction capability in bits 't'.
	313	Drivers should declare a default value for this symbol if
	314	they select option BCH_CONST_PARAMS.
	315
f7704347 DM	316	#
	317	# Textsearch support is select'ed if needed
	318	#
2de4ff7b	319	config TEXTSEARCH
f7704347	320	boolean
1da177e4	321
df3fb93a	322	config TEXTSEARCH_KMP
f7704347	323	tristate
df3fb93a	324
8082e4ed	325	config TEXTSEARCH_BM
29cb9f9c	326	tristate
8082e4ed	327
6408f79c	328	config TEXTSEARCH_FSM
f7704347	329	tristate
6408f79c	330
5db53f3e JE	331	config BTREE
	332	boolean
	333
a88cc108 CW	334	config INTERVAL_TREE
	335	boolean
	336	help
	337	Simple, embeddable, interval-tree. Can find the start of an
	338	overlapping range in log(n) time and then iterate over all
	339	overlapping nodes. The algorithm is implemented as an
	340	augmented rbtree.
	341
	342	See:
	343
	344	Documentation/rbtree.txt
	345
	346	for more information.
	347
3cb98950 DH	348	config ASSOCIATIVE_ARRAY
	349	bool
	350	help
	351	Generic associative array. Can be searched and iterated over whilst
	352	it is being modified. It is also reasonably quick to search and
	353	modify. The algorithms are non-recursive, and the trees are highly
	354	capacious.
	355
	356	See:
	357
	358	Documentation/assoc_array.txt
	359
	360	for more information.
	361
5ea81769	362	config HAS_IOMEM
ee36c2bf	363	boolean
5ea81769	364	depends on !NO_IOMEM
087fafd1	365	select GENERIC_IO
5ea81769 AV	366	default y
5ea81769 AV	367
ce816fa8	368	config HAS_IOPORT_MAP
5ea81769	369	boolean
ce816fa8	370	depends on HAS_IOMEM && !NO_IOPORT_MAP
ee36c2bf AV	371	default y
ee36c2bf AV	372
411f0f3e HC	373	config HAS_DMA
	374	boolean
	375	depends on !NO_DMA
	376	default y
	377
928923c7 GU	378	config CHECK_SIGNATURE
	379	bool
	380
aab46da0 RR	381	config CPUMASK_OFFSTACK
	382	bool "Force CPU masks off stack" if DEBUG_PER_CPU_MAPS
	383	help
	384	Use dynamic allocation for cpumask_var_t, instead of putting
	385	them on the stack. This is a bit more expensive, but avoids
	386	stack overflow.
	387
8c384cde RR	388	config DISABLE_OBSOLETE_CPUMASK_FUNCTIONS
8c384cde RR	389	bool "Disable obsolete cpumask functions" if DEBUG_PER_CPU_MAPS
525c1f92	390	depends on BROKEN
8c384cde	391
c39649c3 BH	392	config CPU_RMAP
	393	bool
	394	depends on SMP
	395
75957ba3 TH	396	config DQL
	397	bool
	398
b0125085 GS	399	config GLOB
	400	bool
	401	# This actually supports modular compilation, but the module overhead
	402	# is ridiculous for the amount of code involved. Until an out-of-tree
	403	# driver asks for it, we'll just link it directly it into the kernel
	404	# when required. Since we're ignoring out-of-tree users, there's also
	405	# no need bother prompting for a manual decision:
	406	# prompt "glob_match() function"
	407	help
	408	This option provides a glob_match function for performing
	409	simple text pattern matching. It originated in the ATA code
	410	to blacklist particular drive models, but other device drivers
	411	may need similar functionality.
	412
	413	All drivers in the Linux kernel tree that require this function
	414	should automatically select this option. Say N unless you
	415	are compiling an out-of tree driver which tells you that it
	416	depends on this.
	417
5f9be824 GS	418	config GLOB_SELFTEST
	419	bool "glob self-test on init"
	420	default n
	421	depends on GLOB
	422	help
	423	This option enables a simple self-test of the glob_match
	424	function on startup. It is primarily useful for people
	425	working on the code to ensure they haven't introduced any
	426	regressions.
	427
	428	It only adds a little bit of code and slows kernel boot (or
	429	module load) by a small amount, so you're welcome to play with
	430	it, but you probably don't need it.
	431
e9cc8bdd GU	432	#
	433	# Netlink attribute parsing support is select'ed if needed
	434	#
	435	config NLATTR
	436	bool
	437
09d4e0ed PM	438	#
	439	# Generic 64-bit atomic support is selected if needed
	440	#
	441	config GENERIC_ATOMIC64
	442	bool
	443
7463449b CM	444	config ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
	445	def_bool y if GENERIC_ATOMIC64
	446
b411b363 PR	447	config LRU_CACHE
	448	tristate
	449
c5485a7e	450	config AVERAGE
a7a9a24d MB	451	bool "Averaging functions"
	452	help
	453	This option is provided for the case where no in-kernel-tree
	454	modules require averaging functions, but a module built outside
	455	the kernel tree does. Such modules that use library averaging
	456	functions require Y here.
	457
	458	If unsure, say N.
c5485a7e	459
c6df4b17 DM	460	config CLZ_TAB
	461	bool
	462
10f8113e	463	config CORDIC
d89ce936	464	tristate "CORDIC algorithm"
10f8113e	465	help
435a95c5 MW	466	This option provides an implementation of the CORDIC algorithm;
435a95c5 MW	467	calculations are in fixed point. Module will be called cordic.
10f8113e	468
9c1c21a0 A	469	config DDR
	470	bool "JEDEC DDR data"
	471	help
	472	Data from JEDEC specs for DDR SDRAM memories,
	473	particularly the AC timing parameters and addressing
	474	information. This data is useful for drivers handling
	475	DDR SDRAM controllers.
	476
d9c46b18	477	config MPILIB
2e5f094b	478	tristate
c6df4b17	479	select CLZ_TAB
d9c46b18 DK	480	help
	481	Multiprecision maths library from GnuPG.
	482	It is used to implement RSA digital signature verification,
	483	which is used by IMA/EVM digital signature extension.
	484
5e8898e9	485	config SIGNATURE
2e5f094b	486	tristate
0d1f64f6 DK	487	depends on KEYS
0d1f64f6 DK	488	select CRYPTO
be440ec7	489	select CRYPTO_SHA1
051dbb91 DK	490	select MPILIB
	491	help
	492	Digital signature verification. Currently only RSA is supported.
	493	Implementation is done using GnuPG MPI library
	494
ab253839 DD	495	#
	496	# libfdt files, only selected if needed.
	497	#
	498	config LIBFDT
	499	bool
	500
a77ad6ea DH	501	config OID_REGISTRY
	502	tristate
	503	help
	504	Enable fast lookup object identifier registry.
	505
0635eb8a MG	506	config UCS2_STRING
	507	tristate
	508
ee89bd6b GU	509	source "lib/fonts/Kconfig"
ee89bd6b GU	510
308c09f1 LA	511	#
	512	# sg chaining option
	513	#
	514
	515	config ARCH_HAS_SG_CHAIN
	516	def_bool n
	517
2de4ff7b	518	endmenu