xref: /linux/lib/Kconfig (revision c6df4b17c8539f737a6a2d7b797eac41e8e34cdc)
11da177e4SLinus Torvalds#
21da177e4SLinus Torvalds# Library configuration
31da177e4SLinus Torvalds#
41da177e4SLinus Torvalds
54370aa4aSLai Jiangshanconfig BINARY_PRINTF
64370aa4aSLai Jiangshan	def_bool n
74370aa4aSLai Jiangshan
81da177e4SLinus Torvaldsmenu "Library routines"
91da177e4SLinus Torvalds
10f5e70d0fSDavid Woodhouseconfig RAID6_PQ
11f5e70d0fSDavid Woodhouse	tristate
12f5e70d0fSDavid Woodhouse
13a5cfc1ecSAkinobu Mitaconfig BITREVERSE
14a5cfc1ecSAkinobu Mita	tristate
15a5cfc1ecSAkinobu Mita
168759ef32SOskar Schirmerconfig RATIONAL
178759ef32SOskar Schirmer	boolean
188759ef32SOskar Schirmer
1919870defSAlexander van Heukelumconfig GENERIC_FIND_FIRST_BIT
209ba16087SJan Beulich	bool
2119870defSAlexander van Heukelum
2266eab4dfSMichael S. Tsirkinconfig GENERIC_PCI_IOMAP
2366eab4dfSMichael S. Tsirkin	bool
2466eab4dfSMichael S. Tsirkin
254673ca8eSMichael S. Tsirkinconfig GENERIC_IOMAP
264673ca8eSMichael S. Tsirkin	bool
2766eab4dfSMichael S. Tsirkin	select GENERIC_PCI_IOMAP
284673ca8eSMichael S. Tsirkin
291da177e4SLinus Torvaldsconfig CRC_CCITT
301da177e4SLinus Torvalds	tristate "CRC-CCITT functions"
311da177e4SLinus Torvalds	help
321da177e4SLinus Torvalds	  This option is provided for the case where no in-kernel-tree
331da177e4SLinus Torvalds	  modules require CRC-CCITT functions, but a module built outside
341da177e4SLinus Torvalds	  the kernel tree does. Such modules that use library CRC-CCITT
351da177e4SLinus Torvalds	  functions require M here.
361da177e4SLinus Torvalds
377657ec1fSEvgeniy Polyakovconfig CRC16
387657ec1fSEvgeniy Polyakov	tristate "CRC16 functions"
397657ec1fSEvgeniy Polyakov	help
407657ec1fSEvgeniy Polyakov	  This option is provided for the case where no in-kernel-tree
417657ec1fSEvgeniy Polyakov	  modules require CRC16 functions, but a module built outside
427657ec1fSEvgeniy Polyakov	  the kernel tree does. Such modules that use library CRC16
437657ec1fSEvgeniy Polyakov	  functions require M here.
447657ec1fSEvgeniy Polyakov
45f11f594eSMartin K. Petersenconfig CRC_T10DIF
46f11f594eSMartin K. Petersen	tristate "CRC calculation for the T10 Data Integrity Field"
47f11f594eSMartin K. Petersen	help
48f11f594eSMartin K. Petersen	  This option is only needed if a module that's not in the
49f11f594eSMartin K. Petersen	  kernel tree needs to calculate CRC checks for use with the
50f11f594eSMartin K. Petersen	  SCSI data integrity subsystem.
51f11f594eSMartin K. Petersen
523e7cbae7SIvo van Doornconfig CRC_ITU_T
533e7cbae7SIvo van Doorn	tristate "CRC ITU-T V.41 functions"
543e7cbae7SIvo van Doorn	help
553e7cbae7SIvo van Doorn	  This option is provided for the case where no in-kernel-tree
563e7cbae7SIvo van Doorn	  modules require CRC ITU-T V.41 functions, but a module built outside
573e7cbae7SIvo van Doorn	  the kernel tree does. Such modules that use library CRC ITU-T V.41
583e7cbae7SIvo van Doorn	  functions require M here.
593e7cbae7SIvo van Doorn
601da177e4SLinus Torvaldsconfig CRC32
611da177e4SLinus Torvalds	tristate "CRC32 functions"
621da177e4SLinus Torvalds	default y
63906d66dfSAkinobu Mita	select BITREVERSE
641da177e4SLinus Torvalds	help
651da177e4SLinus Torvalds	  This option is provided for the case where no in-kernel-tree
661da177e4SLinus Torvalds	  modules require CRC32 functions, but a module built outside the
671da177e4SLinus Torvalds	  kernel tree does. Such modules that use library CRC32 functions
681da177e4SLinus Torvalds	  require M here.
691da177e4SLinus Torvalds
70ad241528SJan Nikitenkoconfig CRC7
71ad241528SJan Nikitenko	tristate "CRC7 functions"
72ad241528SJan Nikitenko	help
73ad241528SJan Nikitenko	  This option is provided for the case where no in-kernel-tree
74ad241528SJan Nikitenko	  modules require CRC7 functions, but a module built outside
75ad241528SJan Nikitenko	  the kernel tree does. Such modules that use library CRC7
76ad241528SJan Nikitenko	  functions require M here.
77ad241528SJan Nikitenko
781da177e4SLinus Torvaldsconfig LIBCRC32C
791da177e4SLinus Torvalds	tristate "CRC32c (Castagnoli, et al) Cyclic Redundancy-Check"
8093027354SHerbert Xu	select CRYPTO
8169c35efcSHerbert Xu	select CRYPTO_CRC32C
821da177e4SLinus Torvalds	help
831da177e4SLinus Torvalds	  This option is provided for the case where no in-kernel-tree
841da177e4SLinus Torvalds	  modules require CRC32c functions, but a module built outside the
851da177e4SLinus Torvalds	  kernel tree does. Such modules that use library CRC32c functions
861da177e4SLinus Torvalds	  require M here.  See Castagnoli93.
871da177e4SLinus Torvalds	  Module will be libcrc32c.
881da177e4SLinus Torvalds
897150962dSArend van Sprielconfig CRC8
907150962dSArend van Spriel	tristate "CRC8 function"
917150962dSArend van Spriel	help
927150962dSArend van Spriel	  This option provides CRC8 function. Drivers may select this
937150962dSArend van Spriel	  when they need to do cyclic redundancy check according CRC8
947150962dSArend van Spriel	  algorithm. Module will be called crc8.
957150962dSArend van Spriel
96e65e1fc2SAl Viroconfig AUDIT_GENERIC
97e65e1fc2SAl Viro	bool
98e65e1fc2SAl Viro	depends on AUDIT && !AUDIT_ARCH
99e65e1fc2SAl Viro	default y
100e65e1fc2SAl Viro
1011da177e4SLinus Torvalds#
1021da177e4SLinus Torvalds# compression support is select'ed if needed
1031da177e4SLinus Torvalds#
1041da177e4SLinus Torvaldsconfig ZLIB_INFLATE
1051da177e4SLinus Torvalds	tristate
1061da177e4SLinus Torvalds
1071da177e4SLinus Torvaldsconfig ZLIB_DEFLATE
1081da177e4SLinus Torvalds	tristate
1091da177e4SLinus Torvalds
11064c70b1cSRichard Purdieconfig LZO_COMPRESS
11164c70b1cSRichard Purdie	tristate
11264c70b1cSRichard Purdie
11364c70b1cSRichard Purdieconfig LZO_DECOMPRESS
11464c70b1cSRichard Purdie	tristate
11564c70b1cSRichard Purdie
11624fa0402SLasse Collinsource "lib/xz/Kconfig"
11724fa0402SLasse Collin
1181da177e4SLinus Torvalds#
119c8531ab3SH. Peter Anvin# These all provide a common interface (hence the apparent duplication with
120c8531ab3SH. Peter Anvin# ZLIB_INFLATE; DECOMPRESS_GZIP is just a wrapper.)
121c8531ab3SH. Peter Anvin#
122c8531ab3SH. Peter Anvinconfig DECOMPRESS_GZIP
1237856a16eSH. Peter Anvin	select ZLIB_INFLATE
124c8531ab3SH. Peter Anvin	tristate
125c8531ab3SH. Peter Anvin
126c8531ab3SH. Peter Anvinconfig DECOMPRESS_BZIP2
127c8531ab3SH. Peter Anvin	tristate
128c8531ab3SH. Peter Anvin
129c8531ab3SH. Peter Anvinconfig DECOMPRESS_LZMA
130c8531ab3SH. Peter Anvin	tristate
131c8531ab3SH. Peter Anvin
1323ebe1243SLasse Collinconfig DECOMPRESS_XZ
1333ebe1243SLasse Collin	select XZ_DEC
1343ebe1243SLasse Collin	tristate
1353ebe1243SLasse Collin
136cacb246fSAlbin Tonnerreconfig DECOMPRESS_LZO
137cacb246fSAlbin Tonnerre	select LZO_DECOMPRESS
138cacb246fSAlbin Tonnerre	tristate
139cacb246fSAlbin Tonnerre
140c8531ab3SH. Peter Anvin#
141f14f75b8SJes Sorensen# Generic allocator support is selected if needed
142f14f75b8SJes Sorensen#
143f14f75b8SJes Sorensenconfig GENERIC_ALLOCATOR
144f14f75b8SJes Sorensen	boolean
145f14f75b8SJes Sorensen
146f14f75b8SJes Sorensen#
1471da177e4SLinus Torvalds# reed solomon support is select'ed if needed
1481da177e4SLinus Torvalds#
1491da177e4SLinus Torvaldsconfig REED_SOLOMON
1501da177e4SLinus Torvalds	tristate
1511da177e4SLinus Torvalds
1521da177e4SLinus Torvaldsconfig REED_SOLOMON_ENC8
1531da177e4SLinus Torvalds	boolean
1541da177e4SLinus Torvalds
1551da177e4SLinus Torvaldsconfig REED_SOLOMON_DEC8
1561da177e4SLinus Torvalds	boolean
1571da177e4SLinus Torvalds
1581da177e4SLinus Torvaldsconfig REED_SOLOMON_ENC16
1591da177e4SLinus Torvalds	boolean
1601da177e4SLinus Torvalds
1611da177e4SLinus Torvaldsconfig REED_SOLOMON_DEC16
1621da177e4SLinus Torvalds	boolean
1631da177e4SLinus Torvalds
164f7704347SDavid S. Miller#
165437aa565SIvan Djelic# BCH support is selected if needed
166437aa565SIvan Djelic#
167437aa565SIvan Djelicconfig BCH
168437aa565SIvan Djelic	tristate
169437aa565SIvan Djelic
170437aa565SIvan Djelicconfig BCH_CONST_PARAMS
171437aa565SIvan Djelic	boolean
172437aa565SIvan Djelic	help
173437aa565SIvan Djelic	  Drivers may select this option to force specific constant
174437aa565SIvan Djelic	  values for parameters 'm' (Galois field order) and 't'
175437aa565SIvan Djelic	  (error correction capability). Those specific values must
176437aa565SIvan Djelic	  be set by declaring default values for symbols BCH_CONST_M
177437aa565SIvan Djelic	  and BCH_CONST_T.
178437aa565SIvan Djelic	  Doing so will enable extra compiler optimizations,
179437aa565SIvan Djelic	  improving encoding and decoding performance up to 2x for
180437aa565SIvan Djelic	  usual (m,t) values (typically such that m*t < 200).
181437aa565SIvan Djelic	  When this option is selected, the BCH library supports
182437aa565SIvan Djelic	  only a single (m,t) configuration. This is mainly useful
183437aa565SIvan Djelic	  for NAND flash board drivers requiring known, fixed BCH
184437aa565SIvan Djelic	  parameters.
185437aa565SIvan Djelic
186437aa565SIvan Djelicconfig BCH_CONST_M
187437aa565SIvan Djelic	int
188437aa565SIvan Djelic	range 5 15
189437aa565SIvan Djelic	help
190437aa565SIvan Djelic	  Constant value for Galois field order 'm'. If 'k' is the
191437aa565SIvan Djelic	  number of data bits to protect, 'm' should be chosen such
192437aa565SIvan Djelic	  that (k + m*t) <= 2**m - 1.
193437aa565SIvan Djelic	  Drivers should declare a default value for this symbol if
194437aa565SIvan Djelic	  they select option BCH_CONST_PARAMS.
195437aa565SIvan Djelic
196437aa565SIvan Djelicconfig BCH_CONST_T
197437aa565SIvan Djelic	int
198437aa565SIvan Djelic	help
199437aa565SIvan Djelic	  Constant value for error correction capability in bits 't'.
200437aa565SIvan Djelic	  Drivers should declare a default value for this symbol if
201437aa565SIvan Djelic	  they select option BCH_CONST_PARAMS.
202437aa565SIvan Djelic
203437aa565SIvan Djelic#
204f7704347SDavid S. Miller# Textsearch support is select'ed if needed
205f7704347SDavid S. Miller#
2062de4ff7bSThomas Grafconfig TEXTSEARCH
207f7704347SDavid S. Miller	boolean
2081da177e4SLinus Torvalds
209df3fb93aSThomas Grafconfig TEXTSEARCH_KMP
210f7704347SDavid S. Miller	tristate
211df3fb93aSThomas Graf
2128082e4edSPablo Neira Ayusoconfig TEXTSEARCH_BM
21329cb9f9cSDavid S. Miller	tristate
2148082e4edSPablo Neira Ayuso
2156408f79cSThomas Grafconfig TEXTSEARCH_FSM
216f7704347SDavid S. Miller	tristate
2176408f79cSThomas Graf
2185db53f3eSJoern Engelconfig BTREE
2195db53f3eSJoern Engel	boolean
2205db53f3eSJoern Engel
2215ea81769SAl Viroconfig HAS_IOMEM
222ee36c2bfSAl Viro	boolean
2235ea81769SAl Viro	depends on !NO_IOMEM
2245ea81769SAl Viro	default y
2255ea81769SAl Viro
2265ea81769SAl Viroconfig HAS_IOPORT
2275ea81769SAl Viro	boolean
2285ea81769SAl Viro	depends on HAS_IOMEM && !NO_IOPORT
229ee36c2bfSAl Viro	default y
230ee36c2bfSAl Viro
231411f0f3eSHeiko Carstensconfig HAS_DMA
232411f0f3eSHeiko Carstens	boolean
233411f0f3eSHeiko Carstens	depends on !NO_DMA
234411f0f3eSHeiko Carstens	default y
235411f0f3eSHeiko Carstens
236928923c7SGeert Uytterhoevenconfig CHECK_SIGNATURE
237928923c7SGeert Uytterhoeven	bool
238928923c7SGeert Uytterhoeven
239aab46da0SRusty Russellconfig CPUMASK_OFFSTACK
240aab46da0SRusty Russell	bool "Force CPU masks off stack" if DEBUG_PER_CPU_MAPS
241aab46da0SRusty Russell	help
242aab46da0SRusty Russell	  Use dynamic allocation for cpumask_var_t, instead of putting
243aab46da0SRusty Russell	  them on the stack.  This is a bit more expensive, but avoids
244aab46da0SRusty Russell	  stack overflow.
245aab46da0SRusty Russell
2468c384cdeSRusty Russellconfig DISABLE_OBSOLETE_CPUMASK_FUNCTIONS
2478c384cdeSRusty Russell       bool "Disable obsolete cpumask functions" if DEBUG_PER_CPU_MAPS
2488c384cdeSRusty Russell       depends on EXPERIMENTAL && BROKEN
2498c384cdeSRusty Russell
250c39649c3SBen Hutchingsconfig CPU_RMAP
251c39649c3SBen Hutchings	bool
252c39649c3SBen Hutchings	depends on SMP
253c39649c3SBen Hutchings
25475957ba3STom Herbertconfig DQL
25575957ba3STom Herbert	bool
25675957ba3STom Herbert
257e9cc8bddSGeert Uytterhoeven#
258e9cc8bddSGeert Uytterhoeven# Netlink attribute parsing support is select'ed if needed
259e9cc8bddSGeert Uytterhoeven#
260e9cc8bddSGeert Uytterhoevenconfig NLATTR
261e9cc8bddSGeert Uytterhoeven	bool
262e9cc8bddSGeert Uytterhoeven
26309d4e0edSPaul Mackerras#
26409d4e0edSPaul Mackerras# Generic 64-bit atomic support is selected if needed
26509d4e0edSPaul Mackerras#
26609d4e0edSPaul Mackerrasconfig GENERIC_ATOMIC64
26709d4e0edSPaul Mackerras       bool
26809d4e0edSPaul Mackerras
269b411b363SPhilipp Reisnerconfig LRU_CACHE
270b411b363SPhilipp Reisner	tristate
271b411b363SPhilipp Reisner
272c5485a7eSBruno Randolfconfig AVERAGE
273a7a9a24dSMichael Buesch	bool "Averaging functions"
274a7a9a24dSMichael Buesch	help
275a7a9a24dSMichael Buesch	  This option is provided for the case where no in-kernel-tree
276a7a9a24dSMichael Buesch	  modules require averaging functions, but a module built outside
277a7a9a24dSMichael Buesch	  the kernel tree does. Such modules that use library averaging
278a7a9a24dSMichael Buesch	  functions require Y here.
279a7a9a24dSMichael Buesch
280a7a9a24dSMichael Buesch	  If unsure, say N.
281c5485a7eSBruno Randolf
282*c6df4b17SDavid Millerconfig CLZ_TAB
283*c6df4b17SDavid Miller	bool
284*c6df4b17SDavid Miller
28510f8113eSArend van Sprielconfig CORDIC
286d89ce936SMichael Witten	tristate "CORDIC algorithm"
28710f8113eSArend van Spriel	help
288435a95c5SMichael Witten	  This option provides an implementation of the CORDIC algorithm;
289435a95c5SMichael Witten	  calculations are in fixed point. Module will be called cordic.
29010f8113eSArend van Spriel
291d9c46b18SDmitry Kasatkinconfig MPILIB
2922e5f094bSDmitry Kasatkin	tristate
293*c6df4b17SDavid Miller	select CLZ_TAB
294d9c46b18SDmitry Kasatkin	help
295d9c46b18SDmitry Kasatkin	  Multiprecision maths library from GnuPG.
296d9c46b18SDmitry Kasatkin	  It is used to implement RSA digital signature verification,
297d9c46b18SDmitry Kasatkin	  which is used by IMA/EVM digital signature extension.
298d9c46b18SDmitry Kasatkin
2997e8dec91SDmitry Kasatkinconfig MPILIB_EXTRA
3002e5f094bSDmitry Kasatkin	bool
3017e8dec91SDmitry Kasatkin	depends on MPILIB
3027e8dec91SDmitry Kasatkin	help
30368adcad5SDmitry Kasatkin	  Additional sources of multiprecision maths library from GnuPG.
30468adcad5SDmitry Kasatkin	  This code is unnecessary for RSA digital signature verification,
30568adcad5SDmitry Kasatkin	  but can be compiled if needed.
3067e8dec91SDmitry Kasatkin
3075e8898e9SDmitry Kasatkinconfig SIGNATURE
3082e5f094bSDmitry Kasatkin	tristate
309be440ec7SDmitry Kasatkin	depends on KEYS && CRYPTO
310be440ec7SDmitry Kasatkin	select CRYPTO_SHA1
311051dbb91SDmitry Kasatkin	select MPILIB
312051dbb91SDmitry Kasatkin	help
313051dbb91SDmitry Kasatkin	  Digital signature verification. Currently only RSA is supported.
314051dbb91SDmitry Kasatkin	  Implementation is done using GnuPG MPI library
315051dbb91SDmitry Kasatkin
3162de4ff7bSThomas Grafendmenu
317