options revision 100128
1# $FreeBSD: head/sys/conf/options 100128 2002-07-15 19:11:21Z jhb $ 2# 3# On the handling of kernel options 4# 5# All kernel options should be listed in NOTES, with suitable 6# descriptions. Negative options (options that make some code not 7# compile) should be commented out; LINT (generated from NOTES) should 8# compile as much code as possible. Try to structure option-using 9# code so that a single option only switch code on, or only switch 10# code off, to make it possible to have a full compile-test. If 11# necessary, you can check for COMPILING_LINT to get maximum code 12# coverage. 13# 14# All new options shall also be listed in either "conf/options" or 15# "conf/options.<machine>". Options that affect a single source-file 16# <xxx>.[c|s] should be directed into "opt_<xxx>.h", while options 17# that affect multiple files should either go in "opt_global.h" if 18# this is a kernel-wide option (used just about everywhere), or in 19# "opt_<option-name-in-lower-case>.h" if it affect only some files. 20# Note that the effect of listing only an option without a 21# header-file-name in conf/options (and cousins) is that the last 22# convention is followed. 23# 24# This handling scheme is not yet fully implemented. 25# 26# 27# Format of this file: 28# Option name filename 29# 30# If filename is missing, the default is 31# opt_<name-of-option-in-lower-case>.h 32 33# Adaptec Array Controller driver options 34AAC_COMPAT_LINUX opt_aac.h # Enable the linux ioctl interface 35 36AAC_DEBUG opt_aac.h # Debugging levels: 37 # 0 - quiet, only emit warnings 38 # 1 - noisy, emit major function 39 # points and things done 40 # 2 - extremely noisy, emit trace 41 # items in loops, etc. 42 43# Adaptec aic7xxx SCSI controller options 44AHC_ALLOW_MEMIO opt_aic7xxx.h # Allow PCI devices to use memory 45 # mapped I/O 46 47AHC_TMODE_ENABLE opt_aic7xxx.h # Bitmap of units to enable 48 # targetmode operations. 49 50AHC_DUMP_EEPROM opt_aic7xxx.h # Dump the contents of our 51 # configuration prom. 52 53AHC_DEBUG_SEQUENCER opt_aic7xxx.h # Enable diagnostic sequencer code 54 55# Adaptec aic79xx SCSI controller options 56AHD_DEBUG opt_aic79xx.h # Compile in aic79xx debugging code. 57 58AHD_DEBUG_OPTS opt_aic79xx.h # Aic79xx driver debugging options. 59 # See sys/dev/aic79xx/aic79xx.h 60 61ADW_ALLOW_MEMIO opt_adw.h # Allow PCI devices to use memory 62 # mapped I/O 63 64# Miscellaneous options. 65ADAPTIVE_MUTEXES 66COMPAT_43 opt_compat.h 67COMPAT_FREEBSD4 opt_compat.h 68COMPAT_SUNOS opt_compat.h 69COMPILING_LINT opt_global.h 70CY_PCI_FASTINTR 71CONSPEED opt_comconsole.h 72DDB 73DDB_NOKLDSYM opt_ddb.h 74DDB_UNATTENDED opt_ddb.h 75GDB_REMOTE_CHAT opt_ddb.h 76GDBSPEED opt_ddb.h 77GEOM 78HW_WDOG 79KTRACE 80KTRACE_REQUEST_POOL opt_ktrace.h 81LIBICONV 82MD_ROOT opt_md.h 83MD_ROOT_SIZE opt_md.h 84NDGBPORTS opt_dgb.h 85NODEVFS opt_devfs.h 86NTIMECOUNTER opt_ntp.h 87NSWAPDEV opt_swap.h 88PPS_SYNC opt_ntp.h 89PUC_FASTINTR opt_puc.h 90QUOTA 91SPX_HACK 92SUIDDIR opt_suiddir.h 93MSGMNB opt_sysvipc.h 94MSGMNI opt_sysvipc.h 95MSGSEG opt_sysvipc.h 96MSGSSZ opt_sysvipc.h 97MSGTQL opt_sysvipc.h 98SEMMAP opt_sysvipc.h 99SEMMNI opt_sysvipc.h 100SEMMNS opt_sysvipc.h 101SEMMNU opt_sysvipc.h 102SEMMSL opt_sysvipc.h 103SEMOPM opt_sysvipc.h 104SEMUME opt_sysvipc.h 105SHMALL opt_sysvipc.h 106SHMMAX opt_sysvipc.h 107SHMMAXPGS opt_sysvipc.h 108SHMMIN opt_sysvipc.h 109SHMMNI opt_sysvipc.h 110SHMSEG opt_sysvipc.h 111SYSVMSG opt_sysvipc.h 112SYSVSEM opt_sysvipc.h 113SYSVSHM opt_sysvipc.h 114VFS_AIO 115WLCACHE opt_wavelan.h 116WLDEBUG opt_wavelan.h 117 118# POSIX kernel options 119P1003_1B opt_posix.h 120_KPOSIX_PRIORITY_SCHEDULING opt_posix.h 121_KPOSIX_VERSION opt_posix.h 122 123# TrustedBSD and POSIX.1e Kernel Options 124 125# Do we want the config file compiled into the kernel? 126INCLUDE_CONFIG_FILE opt_config.h 127 128# Options for static filesystems. These should only be used at config 129# time, since the corresponding lkms cannot work if there are any static 130# dependencies. Unusability is enforced by hiding the defines for the 131# options in a never-included header. 132CD9660 opt_dontuse.h 133CODA opt_dontuse.h 134EXT2FS opt_dontuse.h 135FDESCFS opt_dontuse.h 136LINPROCFS opt_dontuse.h 137MSDOSFS opt_dontuse.h 138NULLFS opt_dontuse.h 139NWFS opt_dontuse.h 140PORTALFS opt_dontuse.h 141PROCFS opt_dontuse.h 142PSEUDOFS opt_dontuse.h 143UMAPFS opt_dontuse.h 144NTFS opt_dontuse.h 145HPFS opt_dontuse.h 146SMBFS opt_dontuse.h 147UNIONFS opt_dontuse.h 148UDF opt_dontuse.h 149 150# Broken - ffs_snapshot() dependency from ufs_lookup() :-( 151FFS opt_ffs_broken_fixme.h 152 153# These static filesystems has one slightly bogus static dependency in 154# sys/i386/i386/autoconf.c. If any of these filesystems are 155# statically compiled into the kernel, code for mounting them as root 156# filesystems will be enabled - but look below. 157NFSCLIENT opt_nfs.h 158NFSSERVER opt_nfs.h 159 160# If you are following the conditions in the copyright, 161# you can enable soft-updates which will speed up a lot of thigs 162# and make the system safer from crashes at the same time. 163# otherwise a STUB module will be compiled in. 164SOFTUPDATES opt_ffs.h 165 166# Enabling this option turns on support for Access Control Lists in UFS, 167# which can be used to support high security configurations. Depends on 168# UFS_EXTATTR. 169UFS_ACL opt_ufs.h 170 171# Enabling this option turns on support for extended attributes in UFS-based 172# filesystems, which can be used to support high security configurations 173# as well as new filesystem features. 174UFS_EXTATTR opt_ufs.h 175UFS_EXTATTR_AUTOSTART opt_ufs.h 176 177# Enable fast hash lookups for large directories on UFS-based filesystems. 178UFS_DIRHASH opt_ufs.h 179 180# The above static dependencies are planned removed, with a 181# <filesystem>_ROOT option to control if it usable as root. This list 182# allows these options to be present in config files already (though 183# they won't make any difference yet). 184NFS_ROOT opt_nfsroot.h 185 186# SMB/CIFS requester 187NETSMB opt_netsmb.h 188NETSMBCRYPTO opt_netsmb.h 189 190# Options used only in subr_param.c. 191HZ opt_param.h 192MAXFILES opt_param.h 193NBUF opt_param.h 194NMBCLUSTERS opt_param.h 195NSFBUFS opt_param.h 196VM_BCACHE_SIZE_MAX opt_param.h 197VM_SWZONE_SIZE_MAX opt_param.h 198MAXUSERS 199DFLDSIZ opt_param.h 200MAXDSIZ opt_param.h 201MAXSSIZ opt_param.h 202 203# Generic SCSI options. 204CAM_MAX_HIGHPOWER opt_cam.h 205CAMDEBUG opt_cam.h 206CAM_DEBUG_DELAY opt_cam.h 207CAM_DEBUG_BUS opt_cam.h 208CAM_DEBUG_TARGET opt_cam.h 209CAM_DEBUG_LUN opt_cam.h 210CAM_DEBUG_FLAGS opt_cam.h 211CAM_NEW_TRAN_CODE opt_cam.h 212SCSI_DELAY opt_scsi.h 213SCSI_NO_SENSE_STRINGS opt_scsi.h 214SCSI_NO_OP_STRINGS opt_scsi.h 215 216 217 218# Options used only in cam/scsi/scsi_cd.c 219CHANGER_MIN_BUSY_SECONDS opt_cd.h 220CHANGER_MAX_BUSY_SECONDS opt_cd.h 221 222# Options used only in cam/scsi/scsi_sa.c. 223SA_IO_TIMEOUT opt_sa.h 224SA_SPACE_TIMEOUT opt_sa.h 225SA_REWIND_TIMEOUT opt_sa.h 226SA_ERASE_TIMEOUT opt_sa.h 227SA_1FM_AT_EOD opt_sa.h 228 229# Options used only in cam/scsi/scsi_pt.c 230SCSI_PT_DEFAULT_TIMEOUT opt_pt.h 231 232# Options used only in cam/scsi/scsi_ses.c 233SES_ENABLE_PASSTHROUGH opt_ses.h 234 235# Options used in dev/sym/ (Symbios SCSI driver). 236SYM_SETUP_LP_PROBE_MAP opt_sym.h #-Low Priority Probe Map (bits) 237 # Allows the ncr to take precedence 238 # 1 (1<<0) -> 810a, 860 239 # 2 (1<<1) -> 825a, 875, 885, 895 240 # 4 (1<<2) -> 895a, 896, 1510d 241SYM_SETUP_SCSI_DIFF opt_sym.h #-HVD support for 825a, 875, 885 242 # disabled:0 (default), enabled:1 243SYM_SETUP_PCI_PARITY opt_sym.h #-PCI parity checking 244 # disabled:0, enabled:1 (default) 245SYM_SETUP_MAX_LUN opt_sym.h #-Number of LUNs supported 246 # default:8, range:[1..64] 247 248# Options used only in pci/ncr.c 249SCSI_NCR_DEBUG opt_ncr.h 250SCSI_NCR_MAX_SYNC opt_ncr.h 251SCSI_NCR_MAX_WIDE opt_ncr.h 252SCSI_NCR_MYADDR opt_ncr.h 253 254# Options used only in dev/isp/* 255ISP_TARGET_MODE opt_isp.h 256ISP_FW_CRASH_DUMP opt_isp.h 257 258# Options used in the 'ata' ATA/ATAPI driver 259ACD_DEBUG opt_ata.h 260AST_DEBUG opt_ata.h 261ATAPI_DEBUG opt_ata.h 262ATA_DEBUG opt_ata.h 263ATA_STATIC_ID opt_ata.h 264DEV_ATADISK opt_ata.h 265DEV_ATAPICD opt_ata.h 266DEV_ATAPIST opt_ata.h 267DEV_ATAPIFD opt_ata.h 268 269# Net stuff. 270ACCEPT_FILTER_DATA 271ACCEPT_FILTER_HTTP 272BOOTP opt_bootp.h 273BOOTP_COMPAT opt_bootp.h 274BOOTP_NFSROOT opt_bootp.h 275BOOTP_NFSV3 opt_bootp.h 276BOOTP_WIRED_TO opt_bootp.h 277BRIDGE opt_bdg.h 278ETHER_II opt_ef.h 279ETHER_8023 opt_ef.h 280ETHER_8022 opt_ef.h 281ETHER_SNAP opt_ef.h 282MROUTING opt_mrouting.h 283INET opt_inet.h 284INET6 opt_inet6.h 285IPSEC opt_ipsec.h 286IPSEC_ESP opt_ipsec.h 287IPSEC_DEBUG opt_ipsec.h 288IPDIVERT 289DUMMYNET opt_ipdn.h 290IPFILTER opt_ipfilter.h 291IPFILTER_LOG opt_ipfilter.h 292IPFILTER_DEFAULT_BLOCK opt_ipfilter.h 293PFIL_HOOKS opt_pfil_hooks.h 294IPFIREWALL opt_ipfw.h 295IPFIREWALL_VERBOSE opt_ipfw.h 296IPFIREWALL_VERBOSE_LIMIT opt_ipfw.h 297IPFIREWALL_DEFAULT_TO_ACCEPT opt_ipfw.h 298IPFIREWALL_FORWARD opt_ipfw.h 299IPV6FIREWALL opt_ip6fw.h 300IPV6FIREWALL_VERBOSE opt_ip6fw.h 301IPV6FIREWALL_VERBOSE_LIMIT opt_ip6fw.h 302IPV6FIREWALL_DEFAULT_TO_ACCEPT opt_ip6fw.h 303IPSTEALTH 304IPX opt_ipx.h 305IPXIP opt_ipx.h 306IPTUNNEL opt_ipx.h 307LIBMCHAIN 308NCP opt_ncp.h 309NETATALK opt_atalk.h 310PPP_BSDCOMP opt_ppp.h 311PPP_DEFLATE opt_ppp.h 312PPP_FILTER opt_ppp.h 313RANDOM_IP_ID 314SLIP_IFF_OPTS opt_slip.h 315TCPDEBUG 316TCP_DROP_SYNFIN opt_tcp_input.h 317XBONEHACK 318 319# Netgraph(4). Use option NETGRAPH to enable the base netgraph code. 320# Each netgraph node type can be either be compiled into the kernel 321# or loaded dynamically. To get the former, include the corresponding 322# option below. Each type has its own man page, e.g. ng_async(4). 323NETGRAPH 324NETGRAPH_ASYNC opt_netgraph.h 325NETGRAPH_BPF opt_netgraph.h 326NETGRAPH_BRIDGE opt_netgraph.h 327NETGRAPH_CISCO opt_netgraph.h 328NETGRAPH_ECHO opt_netgraph.h 329NETGRAPH_ETHER opt_netgraph.h 330NETGRAPH_FRAME_RELAY opt_netgraph.h 331NETGRAPH_GIF opt_netgraph.h 332NETGRAPH_GIF_DEMUX opt_netgraph.h 333NETGRAPH_HOLE opt_netgraph.h 334NETGRAPH_IFACE opt_netgraph.h 335NETGRAPH_IP_INPUT opt_netgraph.h 336NETGRAPH_KSOCKET opt_netgraph.h 337NETGRAPH_LMI opt_netgraph.h 338# MPPC compression requires proprietary files (not included) 339NETGRAPH_MPPC_COMPRESSION opt_netgraph.h 340NETGRAPH_MPPC_ENCRYPTION opt_netgraph.h 341NETGRAPH_ONE2MANY opt_netgraph.h 342NETGRAPH_PPP opt_netgraph.h 343NETGRAPH_PPPOE opt_netgraph.h 344NETGRAPH_PPTPGRE opt_netgraph.h 345NETGRAPH_RFC1490 opt_netgraph.h 346NETGRAPH_SOCKET opt_netgraph.h 347NETGRAPH_SPLIT opt_netgraph.h 348NETGRAPH_TEE opt_netgraph.h 349NETGRAPH_TTY opt_netgraph.h 350NETGRAPH_UI opt_netgraph.h 351NETGRAPH_VJC opt_netgraph.h 352 353# DRM options 354DRM_LINUX opt_drm.h 355DRM_DEBUG opt_drm.h 356 357 358ZERO_COPY_SOCKETS opt_zero.h 359TI_PRIVATE_JUMBOS opt_ti.h 360TI_JUMBO_HDRSPLIT opt_ti.h 361 362# ATM (HARP version) 363ATM_CORE opt_atm.h 364ATM_IP opt_atm.h 365ATM_SIGPVC opt_atm.h 366ATM_SPANS opt_atm.h 367ATM_UNI opt_atm.h 368 369# XXX Conflict: # of devices vs network protocol (Native ATM). 370# This makes "atm.h" unusable. 371NATM opt_natm.h 372 373DPT_ALLOW_MEMIO opt_dpt.h # Allow PCI devices to use memory 374 # mapped I/O 375# DPT driver debug flags 376DPT_MEASURE_PERFORMANCE opt_dpt.h 377DPT_HANDLE_TIMEOUTS opt_dpt.h 378DPT_TIMEOUT_FACTOR opt_dpt.h 379DPT_LOST_IRQ opt_dpt.h 380DPT_RESET_HBA opt_dpt.h 381 382# Adaptec ASR and DPT V/VI controller options 383ASR_MEASURE_PERFORMANCE opt_asr.h 384 385# Misc debug flags. Most of these should probably be replaced with 386# 'DEBUG', and then let people recompile just the interesting modules 387# with 'make CC="cc -DDEBUG"'. 388CLUSTERDEBUG opt_debug_cluster.h 389DEBUG_1284 opt_ppb_1284.h 390VP0_DEBUG opt_vpo.h 391LPT_DEBUG opt_lpt.h 392PLIP_DEBUG opt_plip.h 393LOCKF_DEBUG opt_debug_lockf.h 394NPX_DEBUG opt_debug_npx.h 395NETATALKDEBUG opt_atalk.h 396SI_DEBUG opt_debug_si.h 397 398# Fb options 399FB_DEBUG opt_fb.h 400FB_INSTALL_CDEV opt_fb.h 401 402# ppbus related options 403PERIPH_1284 opt_ppb_1284.h 404DONTPROBE_1284 opt_ppb_1284.h 405 406# smbus related options 407ENABLE_ALART opt_intpm.h 408 409# These cause changes all over the kernel 410BLKDEV_IOSIZE opt_global.h 411DEBUG opt_global.h 412DEBUG_LOCKS opt_global.h 413DEBUG_VFS_LOCKS opt_global.h 414LOOKUP_SHARED opt_global.h 415DIAGNOSTIC opt_global.h 416ENABLE_VFS_IOOPT opt_global.h 417INVARIANT_SUPPORT opt_global.h 418INVARIANTS opt_global.h 419MCLSHIFT opt_global.h 420MSIZE opt_global.h 421REGRESSION opt_global.h 422RESTARTABLE_PANICS opt_global.h 423VFS_BIO_DEBUG opt_global.h 424 425# These are VM related options 426VM_KMEM_SIZE opt_vm.h 427VM_KMEM_SIZE_SCALE opt_vm.h 428VM_KMEM_SIZE_MAX opt_vm.h 429NO_SWAPPING opt_vm.h 430MALLOC_PROFILE opt_vm.h 431PQ_NOOPT opt_vmpage.h 432PQ_NORMALCACHE opt_vmpage.h 433PQ_MEDIUMCACHE opt_vmpage.h 434PQ_LARGECACHE opt_vmpage.h 435PQ_HUGECACHE opt_vmpage.h 436PQ_CACHESIZE opt_vmpage.h 437 438# Standard SMP options 439SMP opt_global.h 440 441# Size of the kernel message buffer 442MSGBUF_SIZE opt_msgbuf.h 443 444# PCI related options 445PCI_ENABLE_IO_MODES opt_pci.h 446PCI_ALLOW_UNSUPPORTED_IO_RANGE opt_pci.h 447 448# NFS options 449NFS_MINATTRTIMO opt_nfs.h 450NFS_MAXATTRTIMO opt_nfs.h 451NFS_MINDIRATTRTIMO opt_nfs.h 452NFS_MAXDIRATTRTIMO opt_nfs.h 453NFS_GATHERDELAY opt_nfs.h 454NFS_WDELAYHASHSIZ opt_nfs.h 455NFS_DEBUG opt_nfs.h 456 457# For the Bt848/Bt848A/Bt849/Bt878/Bt879 driver 458OVERRIDE_CARD opt_bktr.h 459OVERRIDE_TUNER opt_bktr.h 460OVERRIDE_DBX opt_bktr.h 461OVERRIDE_MSP opt_bktr.h 462BROOKTREE_SYSTEM_DEFAULT opt_bktr.h 463BROOKTREE_ALLOC_PAGES opt_bktr.h 464BKTR_OVERRIDE_CARD opt_bktr.h 465BKTR_OVERRIDE_TUNER opt_bktr.h 466BKTR_OVERRIDE_DBX opt_bktr.h 467BKTR_OVERRIDE_MSP opt_bktr.h 468BKTR_SYSTEM_DEFAULT opt_bktr.h 469BKTR_ALLOC_PAGES opt_bktr.h 470BKTR_USE_PLL opt_bktr.h 471BKTR_GPIO_ACCESS opt_bktr.h 472BKTR_NO_MSP_RESET opt_bktr.h 473BKTR_430_FX_MODE opt_bktr.h 474BKTR_SIS_VIA_MODE opt_bktr.h 475BKTR_USE_FREEBSD_SMBUS opt_bktr.h 476 477# meteor opt_meteor.h 478METEOR_ALLOC_PAGES opt_meteor.h 479METEOR_TEST_VIDEO opt_meteor.h 480METEOR_SYSTEM_DEFAULT opt_meteor.h 481METEOR_DEALLOC_PAGES opt_meteor.h 482METEOR_DEALLOC_ABOVE opt_meteor.h 483 484# Various mi ISA bus flags 485COM_ESP opt_sio.h 486COM_MULTIPORT opt_sio.h 487BREAK_TO_DEBUGGER opt_comconsole.h 488ALT_BREAK_TO_DEBUGGER opt_comconsole.h 489DEV_ISA opt_isa.h 490 491# Include tweaks for running under the SimOS machine simulator. 492SIMOS opt_simos.h 493 494# options for bus/device framework 495BUS_DEBUG opt_bus.h 496 497# options for USB support 498UHCI_DEBUG opt_usb.h 499OHCI_DEBUG opt_usb.h 500USB_DEBUG opt_usb.h 501UGEN_DEBUG opt_usb.h 502UHID_DEBUG opt_usb.h 503UHUB_DEBUG opt_usb.h 504UKBD_DEBUG opt_usb.h 505ULPT_DEBUG opt_usb.h 506UMASS_DEBUG opt_usb.h 507UMS_DEBUG opt_usb.h 508URIO_DEBUG opt_usb.h 509UKBD_DFLT_KEYMAP opt_ukbd.h 510 511# Vinum options 512VINUMDEBUG opt_vinum.h 513 514# Embedded system options 515INIT_PATH opt_init_path.h 516 517ROOTDEVNAME opt_rootdevname.h 518 519FDC_DEBUG opt_fdc.h 520PCFCLOCK_VERBOSE opt_pcfclock.h 521PCFCLOCK_MAX_RETRIES opt_pcfclock.h 522TDFX_LINUX opt_tdfx.h 523 524KTR opt_global.h 525KTR_MASK opt_ktr.h 526KTR_CPUMASK opt_ktr.h 527KTR_COMPILE opt_global.h 528KTR_ENTRIES opt_global.h 529KTR_VERBOSE opt_ktr.h 530MUTEX_DEBUG opt_global.h 531WITNESS opt_global.h 532WITNESS_DDB opt_witness.h 533WITNESS_SKIPSPIN opt_witness.h 534 535# options for ACPI support 536ACPI_DEBUG opt_acpi.h 537ACPI_NO_SEMAPHORES opt_acpi.h 538ACPI_MAX_THREADS opt_acpi.h 539 540# options for DEVFS, see sys/fs/devfs/devfs.h 541NDEVFSINO opt_devfs.h 542NDEVFSOVERFLOW opt_devfs.h 543 544# various 'device presence' options. 545DEV_MCA opt_mca.h 546DEV_BPF opt_bpf.h 547 548# ed driver 549ED_NO_MIIBUS opt_ed.h 550 551# Polling device handling 552DEVICE_POLLING opt_global.h 553 554# Mutex profiling 555MUTEX_PROFILING opt_global.h 556