xref: /freebsd/sys/conf/options (revision 3f84dfc1cde5594500e2cee4b1db17c2fc1c2ab2)

# $FreeBSD$
#
#        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.<machine>".  Options that affect a single source-file
# <xxx>.[c|s] should be directed into "opt_<xxx>.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_<option-name-in-lower-case>.h" if it affects 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_<name-of-option-in-lower-case>.h

AAC_DEBUG		opt_aac.h
AACRAID_DEBUG		opt_aacraid.h
AHC_ALLOW_MEMIO		opt_aic7xxx.h
AHC_TMODE_ENABLE	opt_aic7xxx.h
AHC_DUMP_EEPROM		opt_aic7xxx.h
AHC_DEBUG		opt_aic7xxx.h
AHC_DEBUG_OPTS		opt_aic7xxx.h
AHC_REG_PRETTY_PRINT	opt_aic7xxx.h
AHD_DEBUG		opt_aic79xx.h
AHD_DEBUG_OPTS		opt_aic79xx.h
AHD_TMODE_ENABLE	opt_aic79xx.h
AHD_REG_PRETTY_PRINT	opt_aic79xx.h
ADW_ALLOW_MEMIO		opt_adw.h

TWA_DEBUG		opt_twa.h
TWA_FLASH_FIRMWARE	opt_twa.h

# Debugging options.
ALT_BREAK_TO_DEBUGGER	opt_kdb.h
BREAK_TO_DEBUGGER	opt_kdb.h
DDB
DDB_BUFR_SIZE	opt_ddb.h
DDB_CAPTURE_DEFAULTBUFSIZE	opt_ddb.h
DDB_CAPTURE_MAXBUFSIZE	opt_ddb.h
DDB_CTF		opt_ddb.h
DDB_NUMSYM	opt_ddb.h
GDB
KDB		opt_global.h
KDB_TRACE	opt_kdb.h
KDB_UNATTENDED	opt_kdb.h
KLD_DEBUG	opt_kld.h
SYSCTL_DEBUG	opt_sysctl.h
EARLY_PRINTF	opt_global.h
TEXTDUMP_PREFERRED	opt_ddb.h
TEXTDUMP_VERBOSE	opt_ddb.h

# Miscellaneous options.
ADAPTIVE_LOCKMGRS
ALQ
ALTERA_SDCARD_FAST_SIM	opt_altera_sdcard.h
ATSE_CFI_HACK	opt_cfi.h
AUDIT		opt_global.h
BOOTHOWTO	opt_global.h
BOOTVERBOSE	opt_global.h
CALLOUT_PROFILING
CAPABILITIES	opt_capsicum.h
CAPABILITY_MODE	opt_capsicum.h
COMPAT_43	opt_compat.h
COMPAT_43TTY	opt_compat.h
COMPAT_FREEBSD4	opt_compat.h
COMPAT_FREEBSD5	opt_compat.h
COMPAT_FREEBSD6	opt_compat.h
COMPAT_FREEBSD7	opt_compat.h
COMPAT_FREEBSD9	opt_compat.h
COMPAT_FREEBSD10	opt_compat.h
COMPAT_CLOUDABI64	opt_dontuse.h
COMPAT_LINUXKPI	opt_compat.h
COMPILING_LINT	opt_global.h
CY_PCI_FASTINTR
DEADLKRES	opt_watchdog.h
EXT_RESOURCES	opt_global.h
DIRECTIO
FILEMON		opt_dontuse.h
FFCLOCK
FULL_PREEMPTION	opt_sched.h
GZIO		opt_gzio.h
IMAGACT_BINMISC		opt_dontuse.h
IPI_PREEMPTION	opt_sched.h
GEOM_AES	opt_geom.h
GEOM_BDE	opt_geom.h
GEOM_BSD	opt_geom.h
GEOM_CACHE	opt_geom.h
GEOM_CONCAT	opt_geom.h
GEOM_ELI	opt_geom.h
GEOM_FOX	opt_geom.h
GEOM_GATE	opt_geom.h
GEOM_JOURNAL	opt_geom.h
GEOM_LABEL	opt_geom.h
GEOM_LABEL_GPT	opt_geom.h
GEOM_LINUX_LVM	opt_geom.h
GEOM_MAP	opt_geom.h
GEOM_MBR	opt_geom.h
GEOM_MIRROR	opt_geom.h
GEOM_MOUNTVER	opt_geom.h
GEOM_MULTIPATH	opt_geom.h
GEOM_NOP	opt_geom.h
GEOM_PART_APM	opt_geom.h
GEOM_PART_BSD	opt_geom.h
GEOM_PART_BSD64	opt_geom.h
GEOM_PART_EBR	opt_geom.h
GEOM_PART_EBR_COMPAT	opt_geom.h
GEOM_PART_GPT	opt_geom.h
GEOM_PART_LDM	opt_geom.h
GEOM_PART_MBR	opt_geom.h
GEOM_PART_PC98	opt_geom.h
GEOM_PART_VTOC8	opt_geom.h
GEOM_PC98	opt_geom.h
GEOM_RAID	opt_geom.h
GEOM_RAID3	opt_geom.h
GEOM_SHSEC	opt_geom.h
GEOM_STRIPE	opt_geom.h
GEOM_SUNLABEL	opt_geom.h
GEOM_UNCOMPRESS	opt_geom.h
GEOM_UNCOMPRESS_DEBUG	opt_geom.h
GEOM_UZIP	opt_geom.h
GEOM_VINUM	opt_geom.h
GEOM_VIRSTOR	opt_geom.h
GEOM_VOL	opt_geom.h
GEOM_ZERO	opt_geom.h
KDTRACE_HOOKS	opt_global.h
KDTRACE_FRAME	opt_kdtrace.h
KN_HASHSIZE	opt_kqueue.h
KSTACK_MAX_PAGES
KSTACK_PAGES
KSTACK_USAGE_PROF
KTRACE
KTRACE_REQUEST_POOL	opt_ktrace.h
LIBICONV
MAC		opt_global.h
MAC_BIBA	opt_dontuse.h
MAC_BSDEXTENDED	opt_dontuse.h
MAC_IFOFF	opt_dontuse.h
MAC_LOMAC	opt_dontuse.h
MAC_MLS		opt_dontuse.h
MAC_NONE	opt_dontuse.h
MAC_PARTITION	opt_dontuse.h
MAC_PORTACL	opt_dontuse.h
MAC_SEEOTHERUIDS	opt_dontuse.h
MAC_STATIC	opt_mac.h
MAC_STUB	opt_dontuse.h
MAC_TEST	opt_dontuse.h
MD_ROOT		opt_md.h
MD_ROOT_FSTYPE	opt_md.h
MD_ROOT_SIZE	opt_md.h
MFI_DEBUG	opt_mfi.h
MFI_DECODE_LOG	opt_mfi.h
MPROF_BUFFERS	opt_mprof.h
MPROF_HASH_SIZE	opt_mprof.h
NEW_PCIB	opt_global.h
NO_ADAPTIVE_MUTEXES	opt_adaptive_mutexes.h
NO_ADAPTIVE_RWLOCKS
NO_ADAPTIVE_SX
NO_EVENTTIMERS		opt_timer.h
NO_SYSCTL_DESCR	opt_global.h
NSWBUF_MIN	opt_swap.h
MBUF_PACKET_ZONE_DISABLE	opt_global.h
PANIC_REBOOT_WAIT_TIME	opt_panic.h
PCI_IOV		opt_global.h
PPC_DEBUG	opt_ppc.h
PPC_PROBE_CHIPSET	opt_ppc.h
PPS_SYNC	opt_ntp.h
PREEMPTION	opt_sched.h
QUOTA
SCHED_4BSD	opt_sched.h
SCHED_STATS	opt_sched.h
SCHED_ULE	opt_sched.h
SLEEPQUEUE_PROFILING
SLHCI_DEBUG	opt_slhci.h
SPX_HACK
STACK		opt_stack.h
SUIDDIR
MSGMNB		opt_sysvipc.h
MSGMNI		opt_sysvipc.h
MSGSEG		opt_sysvipc.h
MSGSSZ		opt_sysvipc.h
MSGTQL		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
SW_WATCHDOG	opt_watchdog.h
TURNSTILE_PROFILING
UMTX_PROFILING
VFS_AIO
VERBOSE_SYSINIT
WLCACHE		opt_wavelan.h
WLDEBUG		opt_wavelan.h

# POSIX kernel options
P1003_1B_MQUEUE			opt_posix.h
P1003_1B_SEMAPHORES		opt_posix.h
_KPOSIX_PRIORITY_SCHEDULING	opt_posix.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.
AUTOFS		opt_dontuse.h
CD9660		opt_dontuse.h
EXT2FS		opt_dontuse.h
FDESCFS		opt_dontuse.h
FFS		opt_dontuse.h
FUSE		opt_dontuse.h
MSDOSFS		opt_dontuse.h
NANDFS		opt_dontuse.h
NULLFS		opt_dontuse.h
PROCFS		opt_dontuse.h
PSEUDOFS	opt_dontuse.h
REISERFS	opt_dontuse.h
SMBFS		opt_dontuse.h
TMPFS		opt_dontuse.h
UDF		opt_dontuse.h
UNIONFS		opt_dontuse.h
ZFS		opt_dontuse.h

# Pseudofs debugging
PSEUDOFS_TRACE	opt_pseudofs.h

# In-kernel GSS-API
KGSSAPI		opt_kgssapi.h
KGSSAPI_DEBUG	opt_kgssapi.h

# These static filesystems have 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.
# NFSCL - client
# NFSD - server
NFSCL		opt_nfs.h
NFSD		opt_nfs.h

# filesystems and libiconv bridge
CD9660_ICONV	opt_dontuse.h
MSDOSFS_ICONV	opt_dontuse.h
UDF_ICONV	opt_dontuse.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

# On small, embedded systems, it can be useful to turn off support for
# snapshots.  It saves about 30-40k for a feature that would be lightly
# used, if it is used at all.
NO_FFS_SNAPSHOT	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

# Enable gjournal-based UFS journal.
UFS_GJOURNAL	opt_ufs.h

# The below sentence is not in English, and neither is this one.
# We plan to remove the static dependences above, with a
# <filesystem>_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

# Options used only in subr_param.c.
HZ		opt_param.h
MAXFILES	opt_param.h
NBUF		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_COMPILE	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_BOOT_DELAY		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/ata/ata_da.c
ADA_TEST_FAILURE	opt_ada.h
ATA_STATIC_ID		opt_ada.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 dev/ncr/*
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
ISP_DEFAULT_ROLES	opt_isp.h
ISP_INTERNAL_TARGET	opt_isp.h

# Options used only in dev/iscsi
ISCSI_INITIATOR_DEBUG	opt_iscsi_initiator.h

# Net stuff.
ACCEPT_FILTER_DATA
ACCEPT_FILTER_DNS
ACCEPT_FILTER_HTTP
ALTQ			opt_global.h
ALTQ_CBQ		opt_altq.h
ALTQ_CDNR		opt_altq.h
ALTQ_CODEL		opt_altq.h
ALTQ_DEBUG		opt_altq.h
ALTQ_HFSC		opt_altq.h
ALTQ_FAIRQ		opt_altq.h
ALTQ_NOPCC		opt_altq.h
ALTQ_PRIQ		opt_altq.h
ALTQ_RED		opt_altq.h
ALTQ_RIO		opt_altq.h
BOOTP			opt_bootp.h
BOOTP_BLOCKSIZE		opt_bootp.h
BOOTP_COMPAT		opt_bootp.h
BOOTP_NFSROOT		opt_bootp.h
BOOTP_NFSV3		opt_bootp.h
BOOTP_WIRED_TO		opt_bootp.h
DEVICE_POLLING
DUMMYNET		opt_ipdn.h
INET			opt_inet.h
INET6			opt_inet6.h
IPDIVERT
IPFILTER		opt_ipfilter.h
IPFILTER_DEFAULT_BLOCK	opt_ipfilter.h
IPFILTER_LOG		opt_ipfilter.h
IPFILTER_LOOKUP		opt_ipfilter.h
IPFIREWALL		opt_ipfw.h
IPFIREWALL_DEFAULT_TO_ACCEPT	opt_ipfw.h
IPFIREWALL_NAT		opt_ipfw.h
IPFIREWALL_VERBOSE	opt_ipfw.h
IPFIREWALL_VERBOSE_LIMIT	opt_ipfw.h
IPSEC			opt_ipsec.h
IPSEC_DEBUG		opt_ipsec.h
IPSEC_FILTERTUNNEL	opt_ipsec.h
IPSEC_NAT_T		opt_ipsec.h
IPSTEALTH
KRPC
LIBALIAS
LIBMBPOOL
LIBMCHAIN
MBUF_PROFILING
MBUF_STRESS_TEST
MROUTING		opt_mrouting.h
NFSLOCKD
PCBGROUP		opt_pcbgroup.h
PF_DEFAULT_TO_DROP	opt_pf.h
RADIX_MPATH		opt_mpath.h
ROUTETABLES		opt_route.h
RSS			opt_rss.h
SLIP_IFF_OPTS		opt_slip.h
TCPDEBUG
TCPPCAP		opt_global.h
SIFTR
TCP_OFFLOAD		opt_inet.h # Enable code to dispatch TCP offloading
TCP_RFC7413		opt_inet.h
TCP_RFC7413_MAX_KEYS	opt_inet.h
TCP_SIGNATURE		opt_inet.h
VLAN_ARRAY		opt_vlan.h
XBONEHACK
FLOWTABLE		opt_route.h
FLOWTABLE_HASH_ALL	opt_route.h

#
# SCTP
#
SCTP			opt_sctp.h
SCTP_DEBUG		opt_sctp.h # Enable debug printfs
SCTP_WITH_NO_CSUM	opt_sctp.h # Use this at your peril
SCTP_LOCK_LOGGING	opt_sctp.h # Log to KTR lock activity
SCTP_MBUF_LOGGING	opt_sctp.h # Log to KTR general mbuf aloc/free
SCTP_MBCNT_LOGGING	opt_sctp.h # Log to KTR mbcnt activity
SCTP_PACKET_LOGGING	opt_sctp.h # Log to a packet buffer last N packets
SCTP_LTRACE_CHUNKS	opt_sctp.h # Log to KTR chunks processed
SCTP_LTRACE_ERRORS	opt_sctp.h # Log to KTR error returns.
SCTP_USE_PERCPU_STAT	opt_sctp.h # Use per cpu stats.
SCTP_MCORE_INPUT	opt_sctp.h # Have multiple input threads for input mbufs
SCTP_LOCAL_TRACE_BUF	opt_sctp.h # Use tracebuffer exported via sysctl
SCTP_DETAILED_STR_STATS	opt_sctp.h # Use per PR-SCTP policy stream stats
#
#
#

# 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_DEBUG		opt_netgraph.h
NETGRAPH_ASYNC		opt_netgraph.h
NETGRAPH_ATMLLC		opt_netgraph.h
NETGRAPH_ATM_ATMPIF	opt_netgraph.h
NETGRAPH_BLUETOOTH	opt_netgraph.h
NETGRAPH_BLUETOOTH_BT3C	opt_netgraph.h
NETGRAPH_BLUETOOTH_H4	opt_netgraph.h
NETGRAPH_BLUETOOTH_HCI	opt_netgraph.h
NETGRAPH_BLUETOOTH_L2CAP	opt_netgraph.h
NETGRAPH_BLUETOOTH_SOCKET	opt_netgraph.h
NETGRAPH_BLUETOOTH_UBT	opt_netgraph.h
NETGRAPH_BLUETOOTH_UBTBCMFW	opt_netgraph.h
NETGRAPH_BPF		opt_netgraph.h
NETGRAPH_BRIDGE		opt_netgraph.h
NETGRAPH_CAR		opt_netgraph.h
NETGRAPH_CISCO		opt_netgraph.h
NETGRAPH_DEFLATE	opt_netgraph.h
NETGRAPH_DEVICE		opt_netgraph.h
NETGRAPH_ECHO		opt_netgraph.h
NETGRAPH_EIFACE		opt_netgraph.h
NETGRAPH_ETHER		opt_netgraph.h
NETGRAPH_ETHER_ECHO	opt_netgraph.h
NETGRAPH_FEC		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_IPFW		opt_netgraph.h
NETGRAPH_KSOCKET	opt_netgraph.h
NETGRAPH_L2TP		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_NAT		opt_netgraph.h
NETGRAPH_NETFLOW	opt_netgraph.h
NETGRAPH_ONE2MANY	opt_netgraph.h
NETGRAPH_PATCH		opt_netgraph.h
NETGRAPH_PIPE		opt_netgraph.h
NETGRAPH_PPP		opt_netgraph.h
NETGRAPH_PPPOE		opt_netgraph.h
NETGRAPH_PPTPGRE	opt_netgraph.h
NETGRAPH_PRED1		opt_netgraph.h
NETGRAPH_RFC1490	opt_netgraph.h
NETGRAPH_SOCKET		opt_netgraph.h
NETGRAPH_SPLIT		opt_netgraph.h
NETGRAPH_SPPP		opt_netgraph.h
NETGRAPH_TAG		opt_netgraph.h
NETGRAPH_TCPMSS		opt_netgraph.h
NETGRAPH_TEE		opt_netgraph.h
NETGRAPH_TTY		opt_netgraph.h
NETGRAPH_UI		opt_netgraph.h
NETGRAPH_VJC		opt_netgraph.h
NETGRAPH_VLAN		opt_netgraph.h

# NgATM options
NGATM_ATM		opt_netgraph.h
NGATM_ATMBASE		opt_netgraph.h
NGATM_SSCOP		opt_netgraph.h
NGATM_SSCFU		opt_netgraph.h
NGATM_UNI		opt_netgraph.h
NGATM_CCATM		opt_netgraph.h

# DRM options
DRM_DEBUG		opt_drm.h

TI_SF_BUF_JUMBO		opt_ti.h
TI_JUMBO_HDRSPLIT	opt_ti.h

# XXX Conflict: # of devices vs network protocol (Native ATM).
# This makes "atm.h" unusable.
NATM

# DPT driver debug flags
DPT_MEASURE_PERFORMANCE	opt_dpt.h
DPT_RESET_HBA		opt_dpt.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
SI_DEBUG		opt_debug_si.h
IFMEDIA_DEBUG		opt_ifmedia.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
BURN_BRIDGES		opt_global.h
DEBUG			opt_global.h
DEBUG_LOCKS		opt_global.h
DEBUG_VFS_LOCKS		opt_global.h
DFLTPHYS		opt_global.h
DIAGNOSTIC		opt_global.h
INVARIANT_SUPPORT	opt_global.h
INVARIANTS		opt_global.h
MAXCPU			opt_global.h
MAXMEMDOM		opt_global.h
MAXPHYS			opt_global.h
MCLSHIFT		opt_global.h
MUTEX_DEBUG		opt_global.h
MUTEX_NOINLINE		opt_global.h
LOCK_PROFILING		opt_global.h
LOCK_PROFILING_FAST	opt_global.h
MSIZE			opt_global.h
REGRESSION		opt_global.h
RWLOCK_NOINLINE		opt_global.h
SX_NOINLINE		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
VM_NRESERVLEVEL		opt_vm.h
VM_LEVEL_0_ORDER	opt_vm.h
NO_SWAPPING		opt_vm.h
MALLOC_MAKE_FAILURES	opt_vm.h
MALLOC_PROFILE		opt_vm.h
MALLOC_DEBUG_MAXZONES	opt_vm.h

# The MemGuard replacement allocator used for tamper-after-free detection
DEBUG_MEMGUARD		opt_vm.h

# The RedZone malloc(9) protection
DEBUG_REDZONE		opt_vm.h

# Standard SMP options
SMP			opt_global.h

# Size of the kernel message buffer
MSGBUF_SIZE		opt_msgbuf.h

# NFS options
NFS_MINATTRTIMO		opt_nfs.h
NFS_MAXATTRTIMO		opt_nfs.h
NFS_MINDIRATTRTIMO	opt_nfs.h
NFS_MAXDIRATTRTIMO	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
BKTR_NEW_MSP34XX_DRIVER		opt_bktr.h

# Options for uart(4)
UART_PPS_ON_CTS		opt_uart.h
UART_POLL_FREQ		opt_uart.h
UART_DEV_TOLERANCE_PCT	opt_uart.h

# options for bus/device framework
BUS_DEBUG		opt_bus.h

# options for USB support
USB_DEBUG		opt_usb.h
USB_HOST_ALIGN		opt_usb.h
USB_REQ_DEBUG		opt_usb.h
USB_TEMPLATE		opt_usb.h
USB_VERBOSE		opt_usb.h
USB_DMA_SINGLE_ALLOC	opt_usb.h
USB_EHCI_BIG_ENDIAN_DESC	opt_usb.h
U3G_DEBUG		opt_u3g.h
UKBD_DFLT_KEYMAP	opt_ukbd.h
UPLCOM_INTR_INTERVAL	opt_uplcom.h
UVSCOM_DEFAULT_OPKTSIZE	opt_uvscom.h
UVSCOM_INTR_INTERVAL	opt_uvscom.h

# Embedded system options
INIT_PATH

ROOTDEVNAME

FDC_DEBUG		opt_fdc.h
PCFCLOCK_VERBOSE	opt_pcfclock.h
PCFCLOCK_MAX_RETRIES	opt_pcfclock.h

KTR			opt_global.h
KTR_ALQ			opt_ktr.h
KTR_MASK		opt_ktr.h
KTR_CPUMASK		opt_ktr.h
KTR_COMPILE		opt_global.h
KTR_BOOT_ENTRIES	opt_global.h
KTR_ENTRIES		opt_global.h
KTR_VERBOSE		opt_ktr.h
WITNESS			opt_global.h
WITNESS_KDB		opt_witness.h
WITNESS_NO_VNODE	opt_witness.h
WITNESS_SKIPSPIN	opt_witness.h
WITNESS_COUNT		opt_witness.h
OPENSOLARIS_WITNESS	opt_global.h

# options for ACPI support
ACPI_DEBUG		opt_acpi.h
ACPI_MAX_TASKS		opt_acpi.h
ACPI_MAX_THREADS	opt_acpi.h
ACPI_DMAR		opt_acpi.h
DEV_ACPI		opt_acpi.h

# ISA support
DEV_ISA			opt_isa.h
ISAPNP			opt_isa.h

# various 'device presence' options.
DEV_BPF			opt_bpf.h
DEV_CARP		opt_carp.h
DEV_MCA			opt_mca.h
DEV_NETMAP		opt_global.h
DEV_PCI			opt_pci.h
DEV_PF			opt_pf.h
DEV_PFLOG		opt_pf.h
DEV_PFSYNC		opt_pf.h
DEV_RANDOM		opt_global.h
DEV_SPLASH		opt_splash.h
DEV_VLAN		opt_vlan.h

# EISA support
DEV_EISA		opt_eisa.h
EISA_SLOTS		opt_eisa.h

# ed driver
ED_HPP			opt_ed.h
ED_3C503		opt_ed.h
ED_SIC			opt_ed.h

# bce driver
BCE_DEBUG		opt_bce.h
BCE_NVRAM_WRITE_SUPPORT	opt_bce.h

SOCKBUF_DEBUG		opt_global.h


# options for ubsec driver
UBSEC_DEBUG		opt_ubsec.h
UBSEC_RNDTEST		opt_ubsec.h
UBSEC_NO_RNG		opt_ubsec.h

# options for hifn driver
HIFN_DEBUG		opt_hifn.h
HIFN_RNDTEST		opt_hifn.h

# options for safenet driver
SAFE_DEBUG		opt_safe.h
SAFE_NO_RNG		opt_safe.h
SAFE_RNDTEST		opt_safe.h

# syscons/vt options
MAXCONS			opt_syscons.h
SC_ALT_MOUSE_IMAGE	opt_syscons.h
SC_CUT_SPACES2TABS	opt_syscons.h
SC_CUT_SEPCHARS		opt_syscons.h
SC_DEBUG_LEVEL		opt_syscons.h
SC_DFLT_FONT		opt_syscons.h
SC_DISABLE_KDBKEY	opt_syscons.h
SC_DISABLE_REBOOT	opt_syscons.h
SC_HISTORY_SIZE		opt_syscons.h
SC_KERNEL_CONS_ATTR	opt_syscons.h
SC_KERNEL_CONS_REV_ATTR	opt_syscons.h
SC_MOUSE_CHAR		opt_syscons.h
SC_NO_CUTPASTE		opt_syscons.h
SC_NO_FONT_LOADING	opt_syscons.h
SC_NO_HISTORY		opt_syscons.h
SC_NO_MODE_CHANGE	opt_syscons.h
SC_NO_SUSPEND_VTYSWITCH	opt_syscons.h
SC_NO_SYSMOUSE		opt_syscons.h
SC_NORM_ATTR		opt_syscons.h
SC_NORM_REV_ATTR	opt_syscons.h
SC_PIXEL_MODE		opt_syscons.h
SC_RENDER_DEBUG		opt_syscons.h
SC_TWOBUTTON_MOUSE	opt_syscons.h
VT_ALT_TO_ESC_HACK	opt_syscons.h
VT_FB_DEFAULT_WIDTH	opt_syscons.h
VT_FB_DEFAULT_HEIGHT	opt_syscons.h
VT_MAXWINDOWS		opt_syscons.h
VT_TWOBUTTON_MOUSE	opt_syscons.h
DEV_SC			opt_syscons.h
DEV_VT			opt_syscons.h

# teken terminal emulator options
TEKEN_CONS25		opt_teken.h
TEKEN_UTF8		opt_teken.h
TERMINAL_KERN_ATTR	opt_teken.h
TERMINAL_NORM_ATTR	opt_teken.h

# options for printf
PRINTF_BUFR_SIZE	opt_printf.h

# kbd options
KBD_DISABLE_KEYMAP_LOAD	opt_kbd.h
KBD_INSTALL_CDEV	opt_kbd.h
KBD_MAXRETRY		opt_kbd.h
KBD_MAXWAIT		opt_kbd.h
KBD_RESETDELAY		opt_kbd.h
KBDIO_DEBUG		opt_kbd.h

# options for the Atheros driver
ATH_DEBUG		opt_ath.h
ATH_TXBUF		opt_ath.h
ATH_RXBUF		opt_ath.h
ATH_DIAGAPI		opt_ath.h
ATH_TX99_DIAG		opt_ath.h
ATH_ENABLE_11N		opt_ath.h
ATH_ENABLE_DFS		opt_ath.h
ATH_EEPROM_FIRMWARE	opt_ath.h
ATH_ENABLE_RADIOTAP_VENDOR_EXT	opt_ath.h
ATH_DEBUG_ALQ		opt_ath.h
ATH_KTR_INTR_DEBUG	opt_ath.h

# options for the Atheros hal
AH_SUPPORT_AR5416	opt_ah.h
# XXX For now, this breaks non-AR9130 chipsets, so only use it
# XXX when actually targetting AR9130.
AH_SUPPORT_AR9130	opt_ah.h

# This is required for AR933x SoC support
AH_SUPPORT_AR9330	opt_ah.h
AH_SUPPORT_AR9340	opt_ah.h
AH_SUPPORT_QCA9530	opt_ah.h
AH_SUPPORT_QCA9550	opt_ah.h

AH_DEBUG		opt_ah.h
AH_ASSERT		opt_ah.h
AH_DEBUG_ALQ		opt_ah.h
AH_REGOPS_FUNC		opt_ah.h
AH_WRITE_REGDOMAIN	opt_ah.h
AH_DEBUG_COUNTRY	opt_ah.h
AH_WRITE_EEPROM		opt_ah.h
AH_PRIVATE_DIAG		opt_ah.h
AH_NEED_DESC_SWAP	opt_ah.h
AH_USE_INIPDGAIN	opt_ah.h
AH_MAXCHAN		opt_ah.h
AH_RXCFG_SDMAMW_4BYTES	opt_ah.h
AH_INTERRUPT_DEBUGGING	opt_ah.h
# AR5416 and later interrupt mitigation
# XXX do not use this for AR9130
AH_AR5416_INTERRUPT_MITIGATION	opt_ah.h

# options for the Broadcom BCM43xx driver (bwi)
BWI_DEBUG		opt_bwi.h
BWI_DEBUG_VERBOSE	opt_bwi.h

# options for the Marvell 8335 wireless driver
MALO_DEBUG		opt_malo.h
MALO_TXBUF		opt_malo.h
MALO_RXBUF		opt_malo.h

# options for the Marvell wireless driver
MWL_DEBUG		opt_mwl.h
MWL_TXBUF		opt_mwl.h
MWL_RXBUF		opt_mwl.h
MWL_DIAGAPI		opt_mwl.h
MWL_AGGR_SIZE		opt_mwl.h
MWL_TX_NODROP		opt_mwl.h

# Options for the Intel 802.11ac wireless driver
IWM_DEBUG		opt_iwm.h

# Options for the Intel 802.11n wireless driver
IWN_DEBUG		opt_iwn.h

# Options for the Intel 3945ABG wireless driver
WPI_DEBUG		opt_wpi.h

# dcons options
DCONS_BUF_SIZE		opt_dcons.h
DCONS_POLL_HZ		opt_dcons.h
DCONS_FORCE_CONSOLE	opt_dcons.h
DCONS_FORCE_GDB		opt_dcons.h

# HWPMC options
HWPMC_DEBUG		opt_global.h
HWPMC_HOOKS
HWPMC_MIPS_BACKTRACE 	opt_hwpmc_hooks.h

# XBOX options for FreeBSD/i386, but some files are MI
XBOX			opt_xbox.h

# Interrupt filtering
INTR_FILTER

# 802.11 support layer
IEEE80211_DEBUG		opt_wlan.h
IEEE80211_DEBUG_REFCNT	opt_wlan.h
IEEE80211_AMPDU_AGE	opt_wlan.h
IEEE80211_SUPPORT_MESH	opt_wlan.h
IEEE80211_SUPPORT_SUPERG	opt_wlan.h
IEEE80211_SUPPORT_TDMA	opt_wlan.h
IEEE80211_ALQ		opt_wlan.h
IEEE80211_DFS_DEBUG	opt_wlan.h

# 802.11 TDMA support
TDMA_SLOTLEN_DEFAULT	opt_tdma.h
TDMA_SLOTCNT_DEFAULT	opt_tdma.h
TDMA_BINTVAL_DEFAULT	opt_tdma.h
TDMA_TXRATE_11B_DEFAULT	opt_tdma.h
TDMA_TXRATE_11G_DEFAULT	opt_tdma.h
TDMA_TXRATE_11A_DEFAULT	opt_tdma.h
TDMA_TXRATE_TURBO_DEFAULT	opt_tdma.h
TDMA_TXRATE_HALF_DEFAULT	opt_tdma.h
TDMA_TXRATE_QUARTER_DEFAULT	opt_tdma.h
TDMA_TXRATE_11NA_DEFAULT	opt_tdma.h
TDMA_TXRATE_11NG_DEFAULT	opt_tdma.h

# VideoMode
PICKMODE_DEBUG			opt_videomode.h

# Network stack virtualization options
VIMAGE			opt_global.h
VNET_DEBUG		opt_global.h

# Common Flash Interface (CFI) options
CFI_SUPPORT_STRATAFLASH	opt_cfi.h
CFI_ARMEDANDDANGEROUS	opt_cfi.h
CFI_HARDWAREBYTESWAP	opt_cfi.h

# Sound options
SND_DEBUG		opt_snd.h
SND_DIAGNOSTIC		opt_snd.h
SND_FEEDER_MULTIFORMAT	opt_snd.h
SND_FEEDER_FULL_MULTIFORMAT	opt_snd.h
SND_FEEDER_RATE_HP	opt_snd.h
SND_PCM_64		opt_snd.h
SND_OLDSTEREO		opt_snd.h

X86BIOS

# Flattened device tree options
FDT		opt_platform.h
FDT_DTB_STATIC	opt_platform.h

# OFED Infiniband stack
OFED		opt_ofed.h
OFED_DEBUG_INIT	opt_ofed.h
SDP		opt_ofed.h
SDP_DEBUG	opt_ofed.h
IPOIB		opt_ofed.h
IPOIB_DEBUG	opt_ofed.h
IPOIB_CM	opt_ofed.h

# Resource Accounting
RACCT		opt_global.h
RACCT_DEFAULT_TO_DISABLED	opt_global.h

# Resource Limits
RCTL		opt_global.h

# Random number generator(s)
# Which CSPRNG hash we get.
# If Yarrow is not chosen, Fortuna is selected.
RANDOM_YARROW	opt_global.h
# With this, no entropy processor is loaded, but the entropy
# harvesting infrastructure is present. This means an entropy
# processor may be loaded as a module.
RANDOM_LOADABLE	opt_global.h
# This turns on high-rate and potentially expensive harvesting in
# the uma slab allocator.
RANDOM_ENABLE_UMA	opt_global.h

# Intel em(4) driver
EM_MULTIQUEUE	opt_em.h