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