# $FreeBSD$ # # On the handling of kernel options # # All kernel options should be listed in NOTES, with suitable # descriptions. Negative options (options that make some code not # compile) should be commented out; LINT (generated from NOTES) should # compile as much code as possible. Try to structure option-using # code so that a single option only switch code on, or only switch # code off, to make it possible to have a full compile-test. If # necessary, you can check for COMPILING_LINT to get maximum code # coverage. # # All new options shall also be listed in either "conf/options" or # "conf/options.". Options that affect a single source-file # .[c|s] should be directed into "opt_.h", while options # that affect multiple files should either go in "opt_global.h" if # this is a kernel-wide option (used just about everywhere), or in # "opt_.h" if it affect only some files. # Note that the effect of listing only an option without a # header-file-name in conf/options (and cousins) is that the last # convention is followed. # # This handling scheme is not yet fully implemented. # # # Format of this file: # Option name filename # # If filename is missing, the default is # opt_.h # Adaptec Array Controller driver options AAC_COMPAT_LINUX opt_aac.h # Enable the linux ioctl interface AAC_DEBUG opt_aac.h # Debugging levels: # 0 - quiet, only emit warnings # 1 - noisy, emit major function # points and things done # 2 - extremely noisy, emit trace # items in loops, etc. # Adaptec aic7xxx SCSI controller options AHC_ALLOW_MEMIO opt_aic7xxx.h # Allow PCI devices to use memory # mapped I/O AHC_TMODE_ENABLE opt_aic7xxx.h # Bitmap of units to enable # targetmode operations. AHC_DUMP_EEPROM opt_aic7xxx.h # Dump the contents of our # configuration prom. AHC_DEBUG_SEQUENCER opt_aic7xxx.h # Enable diagnostic sequencer code # Adaptec aic79xx SCSI controller options AHD_DEBUG opt_aic79xx.h # Compile in aic79xx debugging code. AHD_DEBUG_OPTS opt_aic79xx.h # Aic79xx driver debugging options. # See sys/dev/aic79xx/aic79xx.h ADW_ALLOW_MEMIO opt_adw.h # Allow PCI devices to use memory # mapped I/O # Miscellaneous options. ADAPTIVE_MUTEXES COMPAT_43 opt_compat.h COMPAT_FREEBSD4 opt_compat.h COMPAT_SUNOS opt_compat.h COMPILING_LINT opt_global.h CY_PCI_FASTINTR CONSPEED opt_comconsole.h DDB DDB_NOKLDSYM opt_ddb.h DDB_UNATTENDED opt_ddb.h GDB_REMOTE_CHAT opt_ddb.h GDBSPEED opt_ddb.h GEOM HW_WDOG KTRACE KTRACE_REQUEST_POOL opt_ktrace.h LIBICONV MD_ROOT opt_md.h MD_ROOT_SIZE opt_md.h NDGBPORTS opt_dgb.h NODEVFS opt_devfs.h NTIMECOUNTER opt_ntp.h NSWAPDEV opt_swap.h PPS_SYNC opt_ntp.h PUC_FASTINTR opt_puc.h QUOTA SPX_HACK SUIDDIR opt_suiddir.h MSGMNB opt_sysvipc.h MSGMNI opt_sysvipc.h MSGSEG opt_sysvipc.h MSGSSZ opt_sysvipc.h MSGTQL opt_sysvipc.h SEMMAP opt_sysvipc.h SEMMNI opt_sysvipc.h SEMMNS opt_sysvipc.h SEMMNU opt_sysvipc.h SEMMSL opt_sysvipc.h SEMOPM opt_sysvipc.h SEMUME opt_sysvipc.h SHMALL opt_sysvipc.h SHMMAX opt_sysvipc.h SHMMAXPGS opt_sysvipc.h SHMMIN opt_sysvipc.h SHMMNI opt_sysvipc.h SHMSEG opt_sysvipc.h SYSVMSG opt_sysvipc.h SYSVSEM opt_sysvipc.h SYSVSHM opt_sysvipc.h VFS_AIO WLCACHE opt_wavelan.h WLDEBUG opt_wavelan.h # POSIX kernel options P1003_1B opt_posix.h _KPOSIX_PRIORITY_SCHEDULING opt_posix.h _KPOSIX_VERSION opt_posix.h ##################################################################### # SECURITY POLICY PARAMETERS # Support for Mandatory Access Control (MAC) MAC opt_mac.h MAC_DEBUG opt_mac.h MAC_NONE opt_dontuse.h # Do we want the config file compiled into the kernel? INCLUDE_CONFIG_FILE opt_config.h # Options for static filesystems. These should only be used at config # time, since the corresponding lkms cannot work if there are any static # dependencies. Unusability is enforced by hiding the defines for the # options in a never-included header. CD9660 opt_dontuse.h CODA opt_dontuse.h EXT2FS opt_dontuse.h FDESCFS opt_dontuse.h LINPROCFS opt_dontuse.h MSDOSFS opt_dontuse.h NULLFS opt_dontuse.h NWFS opt_dontuse.h PORTALFS opt_dontuse.h PROCFS opt_dontuse.h PSEUDOFS opt_dontuse.h UMAPFS opt_dontuse.h NTFS opt_dontuse.h HPFS opt_dontuse.h SMBFS opt_dontuse.h UNIONFS opt_dontuse.h UDF opt_dontuse.h # Broken - ffs_snapshot() dependency from ufs_lookup() :-( FFS opt_ffs_broken_fixme.h # These static filesystems has one slightly bogus static dependency in # sys/i386/i386/autoconf.c. If any of these filesystems are # statically compiled into the kernel, code for mounting them as root # filesystems will be enabled - but look below. NFSCLIENT opt_nfs.h NFSSERVER opt_nfs.h # If you are following the conditions in the copyright, # you can enable soft-updates which will speed up a lot of thigs # and make the system safer from crashes at the same time. # otherwise a STUB module will be compiled in. SOFTUPDATES opt_ffs.h # Enabling this option turns on support for Access Control Lists in UFS, # which can be used to support high security configurations. Depends on # UFS_EXTATTR. UFS_ACL opt_ufs.h # Enabling this option turns on support for extended attributes in UFS-based # filesystems, which can be used to support high security configurations # as well as new filesystem features. UFS_EXTATTR opt_ufs.h UFS_EXTATTR_AUTOSTART opt_ufs.h # Enable fast hash lookups for large directories on UFS-based filesystems. UFS_DIRHASH opt_ufs.h # The above static dependencies are planned removed, with a # _ROOT option to control if it usable as root. This list # allows these options to be present in config files already (though # they won't make any difference yet). NFS_ROOT opt_nfsroot.h # SMB/CIFS requester NETSMB opt_netsmb.h NETSMBCRYPTO opt_netsmb.h # Options used only in subr_param.c. HZ opt_param.h MAXFILES opt_param.h NBUF opt_param.h NMBCLUSTERS opt_param.h NSFBUFS opt_param.h VM_BCACHE_SIZE_MAX opt_param.h VM_SWZONE_SIZE_MAX opt_param.h MAXUSERS DFLDSIZ opt_param.h MAXDSIZ opt_param.h MAXSSIZ opt_param.h # Generic SCSI options. CAM_MAX_HIGHPOWER opt_cam.h CAMDEBUG opt_cam.h CAM_DEBUG_DELAY opt_cam.h CAM_DEBUG_BUS opt_cam.h CAM_DEBUG_TARGET opt_cam.h CAM_DEBUG_LUN opt_cam.h CAM_DEBUG_FLAGS opt_cam.h CAM_NEW_TRAN_CODE opt_cam.h SCSI_DELAY opt_scsi.h SCSI_NO_SENSE_STRINGS opt_scsi.h SCSI_NO_OP_STRINGS opt_scsi.h # Options used only in cam/scsi/scsi_cd.c CHANGER_MIN_BUSY_SECONDS opt_cd.h CHANGER_MAX_BUSY_SECONDS opt_cd.h # Options used only in cam/scsi/scsi_sa.c. SA_IO_TIMEOUT opt_sa.h SA_SPACE_TIMEOUT opt_sa.h SA_REWIND_TIMEOUT opt_sa.h SA_ERASE_TIMEOUT opt_sa.h SA_1FM_AT_EOD opt_sa.h # Options used only in cam/scsi/scsi_pt.c SCSI_PT_DEFAULT_TIMEOUT opt_pt.h # Options used only in cam/scsi/scsi_ses.c SES_ENABLE_PASSTHROUGH opt_ses.h # Options used in dev/sym/ (Symbios SCSI driver). SYM_SETUP_LP_PROBE_MAP opt_sym.h #-Low Priority Probe Map (bits) # Allows the ncr to take precedence # 1 (1<<0) -> 810a, 860 # 2 (1<<1) -> 825a, 875, 885, 895 # 4 (1<<2) -> 895a, 896, 1510d SYM_SETUP_SCSI_DIFF opt_sym.h #-HVD support for 825a, 875, 885 # disabled:0 (default), enabled:1 SYM_SETUP_PCI_PARITY opt_sym.h #-PCI parity checking # disabled:0, enabled:1 (default) SYM_SETUP_MAX_LUN opt_sym.h #-Number of LUNs supported # default:8, range:[1..64] # Options used only in pci/ncr.c SCSI_NCR_DEBUG opt_ncr.h SCSI_NCR_MAX_SYNC opt_ncr.h SCSI_NCR_MAX_WIDE opt_ncr.h SCSI_NCR_MYADDR opt_ncr.h # Options used only in dev/isp/* ISP_TARGET_MODE opt_isp.h ISP_FW_CRASH_DUMP opt_isp.h # Options used in the 'ata' ATA/ATAPI driver ATA_STATIC_ID opt_ata.h ATA_NOPCI opt_ata.h DEV_ATADISK opt_ata.h DEV_ATAPICD opt_ata.h DEV_ATAPIST opt_ata.h DEV_ATAPIFD opt_ata.h DEV_ATAPICAM opt_ata.h ATA_DEBUG opt_ata.h ATAPI_DEBUG opt_ata.h ACD_DEBUG opt_ata.h AST_DEBUG opt_ata.h # Net stuff. ACCEPT_FILTER_DATA ACCEPT_FILTER_HTTP BOOTP opt_bootp.h BOOTP_COMPAT opt_bootp.h BOOTP_NFSROOT opt_bootp.h BOOTP_NFSV3 opt_bootp.h BOOTP_WIRED_TO opt_bootp.h BRIDGE opt_bdg.h ETHER_II opt_ef.h ETHER_8023 opt_ef.h ETHER_8022 opt_ef.h ETHER_SNAP opt_ef.h MROUTING opt_mrouting.h INET opt_inet.h INET6 opt_inet6.h IPSEC opt_ipsec.h IPSEC_ESP opt_ipsec.h IPSEC_DEBUG opt_ipsec.h IPDIVERT DUMMYNET opt_ipdn.h IPFILTER opt_ipfilter.h IPFILTER_LOG opt_ipfilter.h IPFILTER_DEFAULT_BLOCK opt_ipfilter.h PFIL_HOOKS opt_pfil_hooks.h IPFIREWALL opt_ipfw.h IPFIREWALL_VERBOSE opt_ipfw.h IPFIREWALL_VERBOSE_LIMIT opt_ipfw.h IPFIREWALL_DEFAULT_TO_ACCEPT opt_ipfw.h IPFIREWALL_FORWARD opt_ipfw.h IPV6FIREWALL opt_ip6fw.h IPV6FIREWALL_VERBOSE opt_ip6fw.h IPV6FIREWALL_VERBOSE_LIMIT opt_ip6fw.h IPV6FIREWALL_DEFAULT_TO_ACCEPT opt_ip6fw.h IPSTEALTH IPX opt_ipx.h IPXIP opt_ipx.h IPTUNNEL opt_ipx.h LIBMCHAIN NCP opt_ncp.h NETATALK opt_atalk.h PPP_BSDCOMP opt_ppp.h PPP_DEFLATE opt_ppp.h PPP_FILTER opt_ppp.h RANDOM_IP_ID SLIP_IFF_OPTS opt_slip.h TCPDEBUG TCP_DROP_SYNFIN opt_tcp_input.h XBONEHACK # Netgraph(4). Use option NETGRAPH to enable the base netgraph code. # Each netgraph node type can be either be compiled into the kernel # or loaded dynamically. To get the former, include the corresponding # option below. Each type has its own man page, e.g. ng_async(4). NETGRAPH NETGRAPH_ASYNC opt_netgraph.h NETGRAPH_BPF opt_netgraph.h NETGRAPH_BRIDGE opt_netgraph.h NETGRAPH_CISCO opt_netgraph.h NETGRAPH_ECHO opt_netgraph.h NETGRAPH_ETHER opt_netgraph.h NETGRAPH_FRAME_RELAY opt_netgraph.h NETGRAPH_GIF opt_netgraph.h NETGRAPH_GIF_DEMUX opt_netgraph.h NETGRAPH_HOLE opt_netgraph.h NETGRAPH_IFACE opt_netgraph.h NETGRAPH_IP_INPUT opt_netgraph.h NETGRAPH_KSOCKET opt_netgraph.h NETGRAPH_LMI opt_netgraph.h # MPPC compression requires proprietary files (not included) NETGRAPH_MPPC_COMPRESSION opt_netgraph.h NETGRAPH_MPPC_ENCRYPTION opt_netgraph.h NETGRAPH_ONE2MANY opt_netgraph.h NETGRAPH_PPP opt_netgraph.h NETGRAPH_PPPOE opt_netgraph.h NETGRAPH_PPTPGRE opt_netgraph.h NETGRAPH_RFC1490 opt_netgraph.h NETGRAPH_SOCKET opt_netgraph.h NETGRAPH_SPLIT opt_netgraph.h NETGRAPH_TEE opt_netgraph.h NETGRAPH_TTY opt_netgraph.h NETGRAPH_UI opt_netgraph.h NETGRAPH_VJC opt_netgraph.h # DRM options DRM_LINUX opt_drm.h DRM_DEBUG opt_drm.h ZERO_COPY_SOCKETS opt_zero.h TI_PRIVATE_JUMBOS opt_ti.h TI_JUMBO_HDRSPLIT opt_ti.h # ATM (HARP version) ATM_CORE opt_atm.h ATM_IP opt_atm.h ATM_SIGPVC opt_atm.h ATM_SPANS opt_atm.h ATM_UNI opt_atm.h # XXX Conflict: # of devices vs network protocol (Native ATM). # This makes "atm.h" unusable. NATM opt_natm.h DPT_ALLOW_MEMIO opt_dpt.h # Allow PCI devices to use memory # mapped I/O # DPT driver debug flags DPT_MEASURE_PERFORMANCE opt_dpt.h DPT_HANDLE_TIMEOUTS opt_dpt.h DPT_TIMEOUT_FACTOR opt_dpt.h DPT_LOST_IRQ opt_dpt.h DPT_RESET_HBA opt_dpt.h # Adaptec ASR and DPT V/VI controller options ASR_MEASURE_PERFORMANCE opt_asr.h # Misc debug flags. Most of these should probably be replaced with # 'DEBUG', and then let people recompile just the interesting modules # with 'make CC="cc -DDEBUG"'. CLUSTERDEBUG opt_debug_cluster.h DEBUG_1284 opt_ppb_1284.h VP0_DEBUG opt_vpo.h LPT_DEBUG opt_lpt.h PLIP_DEBUG opt_plip.h LOCKF_DEBUG opt_debug_lockf.h NPX_DEBUG opt_debug_npx.h NETATALKDEBUG opt_atalk.h SI_DEBUG opt_debug_si.h # Fb options FB_DEBUG opt_fb.h FB_INSTALL_CDEV opt_fb.h # ppbus related options PERIPH_1284 opt_ppb_1284.h DONTPROBE_1284 opt_ppb_1284.h # smbus related options ENABLE_ALART opt_intpm.h # These cause changes all over the kernel BLKDEV_IOSIZE opt_global.h DEBUG opt_global.h DEBUG_LOCKS opt_global.h DEBUG_VFS_LOCKS opt_global.h LOOKUP_SHARED opt_global.h DIAGNOSTIC opt_global.h ENABLE_VFS_IOOPT opt_global.h INVARIANT_SUPPORT opt_global.h INVARIANTS opt_global.h MCLSHIFT opt_global.h MSIZE opt_global.h REGRESSION opt_global.h RESTARTABLE_PANICS opt_global.h VFS_BIO_DEBUG opt_global.h # These are VM related options VM_KMEM_SIZE opt_vm.h VM_KMEM_SIZE_SCALE opt_vm.h VM_KMEM_SIZE_MAX opt_vm.h NO_SWAPPING opt_vm.h MALLOC_PROFILE opt_vm.h PQ_NOOPT opt_vmpage.h PQ_NORMALCACHE opt_vmpage.h PQ_MEDIUMCACHE opt_vmpage.h PQ_LARGECACHE opt_vmpage.h PQ_HUGECACHE opt_vmpage.h PQ_CACHESIZE opt_vmpage.h # Standard SMP options SMP opt_global.h # Size of the kernel message buffer MSGBUF_SIZE opt_msgbuf.h # PCI related options PCI_ALLOW_UNSUPPORTED_IO_RANGE opt_pci.h # NFS options NFS_MINATTRTIMO opt_nfs.h NFS_MAXATTRTIMO opt_nfs.h NFS_MINDIRATTRTIMO opt_nfs.h NFS_MAXDIRATTRTIMO opt_nfs.h NFS_GATHERDELAY opt_nfs.h NFS_WDELAYHASHSIZ opt_nfs.h NFS_DEBUG opt_nfs.h # For the Bt848/Bt848A/Bt849/Bt878/Bt879 driver OVERRIDE_CARD opt_bktr.h OVERRIDE_TUNER opt_bktr.h OVERRIDE_DBX opt_bktr.h OVERRIDE_MSP opt_bktr.h BROOKTREE_SYSTEM_DEFAULT opt_bktr.h BROOKTREE_ALLOC_PAGES opt_bktr.h BKTR_OVERRIDE_CARD opt_bktr.h BKTR_OVERRIDE_TUNER opt_bktr.h BKTR_OVERRIDE_DBX opt_bktr.h BKTR_OVERRIDE_MSP opt_bktr.h BKTR_SYSTEM_DEFAULT opt_bktr.h BKTR_ALLOC_PAGES opt_bktr.h BKTR_USE_PLL opt_bktr.h BKTR_GPIO_ACCESS opt_bktr.h BKTR_NO_MSP_RESET opt_bktr.h BKTR_430_FX_MODE opt_bktr.h BKTR_SIS_VIA_MODE opt_bktr.h BKTR_USE_FREEBSD_SMBUS opt_bktr.h # meteor opt_meteor.h METEOR_ALLOC_PAGES opt_meteor.h METEOR_TEST_VIDEO opt_meteor.h METEOR_SYSTEM_DEFAULT opt_meteor.h METEOR_DEALLOC_PAGES opt_meteor.h METEOR_DEALLOC_ABOVE opt_meteor.h # Various mi ISA bus flags COM_ESP opt_sio.h COM_MULTIPORT opt_sio.h BREAK_TO_DEBUGGER opt_comconsole.h ALT_BREAK_TO_DEBUGGER opt_comconsole.h DEV_ISA opt_isa.h # Include tweaks for running under the SimOS machine simulator. SIMOS opt_simos.h # options for bus/device framework BUS_DEBUG opt_bus.h # options for USB support UHCI_DEBUG opt_usb.h OHCI_DEBUG opt_usb.h USB_DEBUG opt_usb.h UGEN_DEBUG opt_usb.h UHID_DEBUG opt_usb.h UHUB_DEBUG opt_usb.h UKBD_DEBUG opt_usb.h ULPT_DEBUG opt_usb.h UMASS_DEBUG opt_usb.h UMS_DEBUG opt_usb.h URIO_DEBUG opt_usb.h UKBD_DFLT_KEYMAP opt_ukbd.h # Vinum options VINUMDEBUG opt_vinum.h # Embedded system options INIT_PATH opt_init_path.h ROOTDEVNAME opt_rootdevname.h FDC_DEBUG opt_fdc.h PCFCLOCK_VERBOSE opt_pcfclock.h PCFCLOCK_MAX_RETRIES opt_pcfclock.h TDFX_LINUX opt_tdfx.h KTR opt_global.h KTR_MASK opt_ktr.h KTR_CPUMASK opt_ktr.h KTR_COMPILE opt_global.h KTR_ENTRIES opt_global.h KTR_VERBOSE opt_ktr.h MUTEX_DEBUG opt_global.h WITNESS opt_global.h WITNESS_DDB opt_witness.h WITNESS_SKIPSPIN opt_witness.h # options for ACPI support ACPI_DEBUG opt_acpi.h ACPI_NO_SEMAPHORES opt_acpi.h ACPI_MAX_THREADS opt_acpi.h # options for DEVFS, see sys/fs/devfs/devfs.h NDEVFSINO opt_devfs.h NDEVFSOVERFLOW opt_devfs.h # various 'device presence' options. DEV_MCA opt_mca.h DEV_BPF opt_bpf.h # ed driver ED_NO_MIIBUS opt_ed.h # wi driver WI_SYMBOL_FIRMWARE opt_wi.h # Polling device handling DEVICE_POLLING opt_global.h # Mutex profiling MUTEX_PROFILING opt_global.h