3690d03377
NOTES. Add some comments about the potential problems associated with NIC driver modules and changing these options. Fix sorting problems in sys/conf/options with the MSIZE and MCLSHIFT options. Reviewed by: bde
547 lines
14 KiB
Plaintext
547 lines
14 KiB
Plaintext
# $FreeBSD$
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#
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# On the handling of kernel options
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#
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# All kernel options should be listed in NOTES, with suitable
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# descriptions. Negative options (options that make some code not
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# compile) should be commented out; LINT (generated from NOTES) should
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# compile as much code as possible. Try to structure option-using
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# code so that a single option only switch code on, or only switch
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# code off, to make it possible to have a full compile-test. If
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# necessary, you can check for COMPILING_LINT to get maximum code
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# coverage.
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#
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# All new options shall also be listed in either "conf/options" or
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# "conf/options.<machine>". Options that affect a single source-file
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# <xxx>.[c|s] should be directed into "opt_<xxx>.h", while options
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# that affect multiple files should either go in "opt_global.h" if
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# this is a kernel-wide option (used just about everywhere), or in
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# "opt_<option-name-in-lower-case>.h" if it affect only some files.
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# Note that the effect of listing only an option without a
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# header-file-name in conf/options (and cousins) is that the last
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# convention is followed.
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#
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# This handling scheme is not yet fully implemented.
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#
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#
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# Format of this file:
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# Option name filename
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#
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# If filename is missing, the default is
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# opt_<name-of-option-in-lower-case>.h
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# Adaptec Array Controller driver options
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AAC_COMPAT_LINUX opt_aac.h # Enable the linux ioctl interface
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AAC_DEBUG opt_aac.h # Debugging levels:
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# 0 - quiet, only emit warnings
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# 1 - noisy, emit major function
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# points and things done
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# 2 - extremely noisy, emit trace
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# items in loops, etc.
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# Adaptec aic7xxx SCSI controller options
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AHC_ALLOW_MEMIO opt_aic7xxx.h # Allow PCI devices to use memory
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# mapped I/O
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AHC_TMODE_ENABLE opt_aic7xxx.h # Bitmap of units to enable
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# targetmode operations.
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AHC_DUMP_EEPROM opt_aic7xxx.h # Dump the contents of our
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# configuration prom.
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AHC_DEBUG_SEQUENCER opt_aic7xxx.h # Enable diagnostic sequencer code
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# Adaptec aic79xx SCSI controller options
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AHD_DEBUG opt_aic79xx.h # Compile in aic79xx debugging code.
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AHD_DEBUG_OPTS opt_aic79xx.h # Aic79xx driver debugging options.
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# See sys/dev/aic79xx/aic79xx.h
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ADW_ALLOW_MEMIO opt_adw.h # Allow PCI devices to use memory
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# mapped I/O
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# Miscellaneous options.
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GEOM opt_geom.h
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ADAPTIVE_MUTEXES
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COMPAT_43 opt_compat.h
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COMPAT_SUNOS opt_compat.h
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COMPILING_LINT opt_global.h
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CY_PCI_FASTINTR
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CONSPEED opt_comconsole.h
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DDB
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DDB_NOKLDSYM opt_ddb.h
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DDB_UNATTENDED opt_ddb.h
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GDB_REMOTE_CHAT opt_ddb.h
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GDBSPEED opt_ddb.h
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NODEVFS opt_devfs.h
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HW_WDOG
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KTRACE
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KTRACE_REQUEST_POOL opt_ktrace.h
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LIBICONV
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MD_ROOT opt_md.h
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MD_ROOT_SIZE opt_md.h
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NTIMECOUNTER opt_ntp.h
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NSWAPDEV opt_swap.h
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PPS_SYNC opt_ntp.h
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QUOTA
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SPX_HACK
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SUIDDIR opt_suiddir.h
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SYSVMSG opt_sysvipc.h
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SYSVSEM opt_sysvipc.h
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SYSVSHM opt_sysvipc.h
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SHMALL opt_sysvipc.h
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SHMMAX opt_sysvipc.h
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SHMMAXPGS opt_sysvipc.h
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SHMMIN opt_sysvipc.h
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SHMMNI opt_sysvipc.h
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SHMSEG opt_sysvipc.h
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SEMMAP opt_sysvipc.h
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SEMMNI opt_sysvipc.h
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SEMMNS opt_sysvipc.h
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SEMMNU opt_sysvipc.h
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SEMMSL opt_sysvipc.h
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SEMOPM opt_sysvipc.h
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SEMUME opt_sysvipc.h
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MSGMNB opt_sysvipc.h
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MSGMNI opt_sysvipc.h
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MSGSEG opt_sysvipc.h
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MSGSSZ opt_sysvipc.h
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MSGTQL opt_sysvipc.h
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VFS_AIO
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# POSIX kernel options
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P1003_1B opt_posix.h
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_KPOSIX_PRIORITY_SCHEDULING opt_posix.h
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_KPOSIX_VERSION opt_posix.h
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# TrustedBSD and POSIX.1e Kernel Options
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# Do we want the config file compiled into the kernel?
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INCLUDE_CONFIG_FILE opt_config.h
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# Options for static filesystems. These should only be used at config
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# time, since the corresponding lkms cannot work if there are any static
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# dependencies. Unusability is enforced by hiding the defines for the
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# options in a never-included header.
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CD9660 opt_dontuse.h
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CODA opt_dontuse.h
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EXT2FS opt_dontuse.h
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FDESCFS opt_dontuse.h
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LINPROCFS opt_dontuse.h
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MSDOSFS opt_dontuse.h
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NULLFS opt_dontuse.h
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NWFS opt_dontuse.h
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PORTALFS opt_dontuse.h
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PROCFS opt_dontuse.h
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PSEUDOFS opt_dontuse.h
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UMAPFS opt_dontuse.h
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NTFS opt_dontuse.h
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HPFS opt_dontuse.h
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UNIONFS opt_dontuse.h
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UDF opt_dontuse.h
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# Broken - ffs_snapshot() dependency from ufs_lookup() :-(
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FFS opt_ffs_broken_fixme.h
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# These static filesystems has one slightly bogus static dependency in
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# sys/i386/i386/autoconf.c. If any of these filesystems are
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# statically compiled into the kernel, code for mounting them as root
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# filesystems will be enabled - but look below.
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NFSCLIENT opt_nfs.h
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NFSSERVER opt_nfs.h
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# If you are following the conditions in the copyright,
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# you can enable soft-updates which will speed up a lot of thigs
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# and make the system safer from crashes at the same time.
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# otherwise a STUB module will be compiled in.
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SOFTUPDATES opt_ffs.h
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# Enabling this option turns on support for Access Control Lists in UFS,
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# which can be used to support high security configurations. Depends on
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# UFS_EXTATTR.
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UFS_ACL opt_ufs.h
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# Enabling this option turns on support for extended attributes in UFS-based
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# filesystems, which can be used to support high security configurations
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# as well as new filesystem features.
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UFS_EXTATTR opt_ufs.h
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UFS_EXTATTR_AUTOSTART opt_ufs.h
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# Enable fast hash lookups for large directories on UFS-based filesystems.
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UFS_DIRHASH opt_ufs.h
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# The above static dependencies are planned removed, with a
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# <filesystem>_ROOT option to control if it usable as root. This list
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# allows these options to be present in config files already (though
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# they won't make any difference yet).
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NFS_ROOT opt_nfsroot.h
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# Options used only in subr_param.c.
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HZ opt_param.h
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MAXFILES opt_param.h
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NBUF opt_param.h
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NMBCLUSTERS opt_param.h
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NSFBUFS opt_param.h
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VM_BCACHE_SIZE_MAX opt_param.h
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VM_SWZONE_SIZE_MAX opt_param.h
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MAXUSERS
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DFLDSIZ opt_param.h
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MAXDSIZ opt_param.h
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MAXSSIZ opt_param.h
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# Generic SCSI options.
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CAM_MAX_HIGHPOWER opt_cam.h
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CAMDEBUG opt_cam.h
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CAM_DEBUG_DELAY opt_cam.h
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CAM_DEBUG_BUS opt_cam.h
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CAM_DEBUG_TARGET opt_cam.h
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CAM_DEBUG_LUN opt_cam.h
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CAM_DEBUG_FLAGS opt_cam.h
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CAM_NEW_TRAN_CODE opt_cam.h
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SCSI_DELAY opt_scsi.h
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SCSI_NO_SENSE_STRINGS opt_scsi.h
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SCSI_NO_OP_STRINGS opt_scsi.h
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# Options used only in cam/scsi/scsi_cd.c
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CHANGER_MIN_BUSY_SECONDS opt_cd.h
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CHANGER_MAX_BUSY_SECONDS opt_cd.h
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# Options used only in cam/scsi/scsi_sa.c.
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SA_IO_TIMEOUT opt_sa.h
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SA_SPACE_TIMEOUT opt_sa.h
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SA_REWIND_TIMEOUT opt_sa.h
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SA_ERASE_TIMEOUT opt_sa.h
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SA_1FM_AT_EOD opt_sa.h
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# Options used only in cam/scsi/scsi_pt.c
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SCSI_PT_DEFAULT_TIMEOUT opt_pt.h
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# Options used only in cam/scsi/scsi_ses.c
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SES_ENABLE_PASSTHROUGH opt_ses.h
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# Options used in dev/sym/ (Symbios SCSI driver).
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SYM_SETUP_LP_PROBE_MAP opt_sym.h #-Low Priority Probe Map (bits)
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# Allows the ncr to take precedence
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# 1 (1<<0) -> 810a, 860
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# 2 (1<<1) -> 825a, 875, 885, 895
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# 4 (1<<2) -> 895a, 896, 1510d
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SYM_SETUP_SCSI_DIFF opt_sym.h #-HVD support for 825a, 875, 885
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# disabled:0 (default), enabled:1
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SYM_SETUP_PCI_PARITY opt_sym.h #-PCI parity checking
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# disabled:0, enabled:1 (default)
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SYM_SETUP_MAX_LUN opt_sym.h #-Number of LUNs supported
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# default:8, range:[1..64]
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# Options used only in pci/ncr.c
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SCSI_NCR_DEBUG opt_ncr.h
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SCSI_NCR_MAX_SYNC opt_ncr.h
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SCSI_NCR_MAX_WIDE opt_ncr.h
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SCSI_NCR_MYADDR opt_ncr.h
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# Options used only in dev/isp/*
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ISP_TARGET_MODE opt_isp.h
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ISP_FW_CRASH_DUMP opt_isp.h
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# Options used in the 'ata' ATA/ATAPI driver
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ACD_DEBUG opt_ata.h
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AST_DEBUG opt_ata.h
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ATAPI_DEBUG opt_ata.h
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ATA_DEBUG opt_ata.h
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ATA_STATIC_ID opt_ata.h
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DEV_ATADISK opt_ata.h
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DEV_ATAPICD opt_ata.h
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DEV_ATAPIST opt_ata.h
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DEV_ATAPIFD opt_ata.h
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# Net stuff.
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ACCEPT_FILTER_DATA
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ACCEPT_FILTER_HTTP
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BOOTP opt_bootp.h
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BOOTP_COMPAT opt_bootp.h
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BOOTP_NFSROOT opt_bootp.h
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BOOTP_NFSV3 opt_bootp.h
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BOOTP_WIRED_TO opt_bootp.h
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BRIDGE opt_bdg.h
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ETHER_II opt_ef.h
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ETHER_8023 opt_ef.h
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ETHER_8022 opt_ef.h
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ETHER_SNAP opt_ef.h
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MROUTING opt_mrouting.h
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INET opt_inet.h
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INET6 opt_inet6.h
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IPSEC opt_ipsec.h
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IPSEC_ESP opt_ipsec.h
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IPSEC_DEBUG opt_ipsec.h
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IPDIVERT
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DUMMYNET opt_ipdn.h
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IPFILTER opt_ipfilter.h
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IPFILTER_LOG opt_ipfilter.h
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IPFILTER_DEFAULT_BLOCK opt_ipfilter.h
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PFIL_HOOKS opt_pfil_hooks.h
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IPFIREWALL opt_ipfw.h
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IPFIREWALL_VERBOSE opt_ipfw.h
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IPFIREWALL_VERBOSE_LIMIT opt_ipfw.h
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IPFIREWALL_DEFAULT_TO_ACCEPT opt_ipfw.h
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IPFIREWALL_FORWARD opt_ipfw.h
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IPV6FIREWALL opt_ip6fw.h
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IPV6FIREWALL_VERBOSE opt_ip6fw.h
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IPV6FIREWALL_VERBOSE_LIMIT opt_ip6fw.h
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IPV6FIREWALL_DEFAULT_TO_ACCEPT opt_ip6fw.h
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IPSTEALTH
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IPX opt_ipx.h
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IPXIP opt_ipx.h
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IPTUNNEL opt_ipx.h
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LIBMCHAIN
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NCP opt_ncp.h
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NETATALK opt_atalk.h
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PPP_BSDCOMP opt_ppp.h
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PPP_DEFLATE opt_ppp.h
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PPP_FILTER opt_ppp.h
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RANDOM_IP_ID
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SLIP_IFF_OPTS opt_slip.h
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TCPDEBUG
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TCP_DROP_SYNFIN opt_tcp_input.h
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XBONEHACK
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# Netgraph(4). Use option NETGRAPH to enable the base netgraph code.
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# Each netgraph node type can be either be compiled into the kernel
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# or loaded dynamically. To get the former, include the corresponding
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# option below. Each type has its own man page, e.g. ng_async(4).
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NETGRAPH
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NETGRAPH_ASYNC opt_netgraph.h
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NETGRAPH_BPF opt_netgraph.h
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NETGRAPH_BRIDGE opt_netgraph.h
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NETGRAPH_CISCO opt_netgraph.h
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NETGRAPH_ECHO opt_netgraph.h
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NETGRAPH_ETHER opt_netgraph.h
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NETGRAPH_FRAME_RELAY opt_netgraph.h
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NETGRAPH_GIF opt_netgraph.h
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NETGRAPH_GIF_DEMUX opt_netgraph.h
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NETGRAPH_HOLE opt_netgraph.h
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NETGRAPH_IFACE opt_netgraph.h
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NETGRAPH_IP_INPUT opt_netgraph.h
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NETGRAPH_KSOCKET opt_netgraph.h
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NETGRAPH_LMI opt_netgraph.h
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# MPPC compression requires proprietary files (not included)
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NETGRAPH_MPPC_COMPRESSION opt_netgraph.h
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NETGRAPH_MPPC_ENCRYPTION opt_netgraph.h
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NETGRAPH_ONE2MANY opt_netgraph.h
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NETGRAPH_PPP opt_netgraph.h
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NETGRAPH_PPPOE opt_netgraph.h
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NETGRAPH_PPTPGRE opt_netgraph.h
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NETGRAPH_RFC1490 opt_netgraph.h
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NETGRAPH_SOCKET opt_netgraph.h
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NETGRAPH_SPLIT opt_netgraph.h
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NETGRAPH_TEE opt_netgraph.h
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NETGRAPH_TTY opt_netgraph.h
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NETGRAPH_UI opt_netgraph.h
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NETGRAPH_VJC opt_netgraph.h
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# DRM options
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DRM_LINUX opt_drm.h
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DRM_DEBUG opt_drm.h
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ZERO_COPY_SOCKETS opt_zero.h
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TI_PRIVATE_JUMBOS opt_ti.h
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TI_JUMBO_HDRSPLIT opt_ti.h
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# ATM (HARP version)
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ATM_CORE opt_atm.h
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ATM_IP opt_atm.h
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ATM_SIGPVC opt_atm.h
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ATM_SPANS opt_atm.h
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ATM_UNI opt_atm.h
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# XXX Conflict: # of devices vs network protocol (Native ATM).
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# This makes "atm.h" unusable.
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NATM opt_natm.h
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DPT_ALLOW_MEMIO opt_dpt.h # Allow PCI devices to use memory
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# mapped I/O
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# DPT driver debug flags
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DPT_MEASURE_PERFORMANCE opt_dpt.h
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DPT_HANDLE_TIMEOUTS opt_dpt.h
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DPT_TIMEOUT_FACTOR opt_dpt.h
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DPT_LOST_IRQ opt_dpt.h
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DPT_RESET_HBA opt_dpt.h
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# Adaptec ASR and DPT V/VI controller options
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ASR_MEASURE_PERFORMANCE opt_asr.h
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# Misc debug flags. Most of these should probably be replaced with
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# 'DEBUG', and then let people recompile just the interesting modules
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# with 'make CC="cc -DDEBUG"'.
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CLUSTERDEBUG opt_debug_cluster.h
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DEBUG_1284 opt_ppb_1284.h
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VP0_DEBUG opt_vpo.h
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LPT_DEBUG opt_lpt.h
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PLIP_DEBUG opt_plip.h
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LOCKF_DEBUG opt_debug_lockf.h
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NPX_DEBUG opt_debug_npx.h
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NETATALKDEBUG opt_atalk.h
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SI_DEBUG opt_debug_si.h
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# Fb options
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FB_DEBUG opt_fb.h
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FB_INSTALL_CDEV opt_fb.h
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# ppbus related options
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PERIPH_1284 opt_ppb_1284.h
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DONTPROBE_1284 opt_ppb_1284.h
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# smbus related options
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ENABLE_ALART opt_intpm.h
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# These cause changes all over the kernel
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BLKDEV_IOSIZE opt_global.h
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DEBUG opt_global.h
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DEBUG_LOCKS opt_global.h
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DEBUG_VFS_LOCKS opt_global.h
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LOOKUP_SHARED opt_global.h
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DIAGNOSTIC opt_global.h
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ENABLE_VFS_IOOPT opt_global.h
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INVARIANT_SUPPORT opt_global.h
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INVARIANTS opt_global.h
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MCLSHIFT opt_global.h
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MSIZE opt_global.h
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REGRESSION opt_global.h
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RESTARTABLE_PANICS opt_global.h
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VFS_BIO_DEBUG opt_global.h
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# These are VM related options
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VM_KMEM_SIZE opt_vm.h
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VM_KMEM_SIZE_SCALE opt_vm.h
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VM_KMEM_SIZE_MAX opt_vm.h
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NO_SWAPPING opt_vm.h
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MALLOC_PROFILE opt_vm.h
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PQ_NOOPT opt_vmpage.h
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PQ_NORMALCACHE opt_vmpage.h
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PQ_MEDIUMCACHE opt_vmpage.h
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PQ_LARGECACHE opt_vmpage.h
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PQ_HUGECACHE opt_vmpage.h
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PQ_CACHESIZE opt_vmpage.h
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# Standard SMP options
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SMP opt_global.h
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# Size of the kernel message buffer
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MSGBUF_SIZE opt_msgbuf.h
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# PCI related options
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PCI_ENABLE_IO_MODES opt_pci.h
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PCI_ALLOW_UNSUPPORTED_IO_RANGE opt_pci.h
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# NFS options
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NFS_MINATTRTIMO opt_nfs.h
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NFS_MAXATTRTIMO opt_nfs.h
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NFS_MINDIRATTRTIMO opt_nfs.h
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NFS_MAXDIRATTRTIMO opt_nfs.h
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NFS_GATHERDELAY opt_nfs.h
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NFS_WDELAYHASHSIZ opt_nfs.h
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NFS_DEBUG opt_nfs.h
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# For the Bt848/Bt848A/Bt849/Bt878/Bt879 driver
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OVERRIDE_CARD opt_bktr.h
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OVERRIDE_TUNER opt_bktr.h
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OVERRIDE_DBX opt_bktr.h
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OVERRIDE_MSP opt_bktr.h
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BROOKTREE_SYSTEM_DEFAULT opt_bktr.h
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BROOKTREE_ALLOC_PAGES opt_bktr.h
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BKTR_OVERRIDE_CARD opt_bktr.h
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BKTR_OVERRIDE_TUNER opt_bktr.h
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BKTR_OVERRIDE_DBX opt_bktr.h
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BKTR_OVERRIDE_MSP opt_bktr.h
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BKTR_SYSTEM_DEFAULT opt_bktr.h
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BKTR_ALLOC_PAGES opt_bktr.h
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BKTR_USE_PLL opt_bktr.h
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BKTR_GPIO_ACCESS opt_bktr.h
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BKTR_NO_MSP_RESET opt_bktr.h
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BKTR_430_FX_MODE opt_bktr.h
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BKTR_SIS_VIA_MODE opt_bktr.h
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BKTR_USE_FREEBSD_SMBUS opt_bktr.h
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# meteor opt_meteor.h
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METEOR_ALLOC_PAGES opt_meteor.h
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METEOR_TEST_VIDEO opt_meteor.h
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METEOR_SYSTEM_DEFAULT opt_meteor.h
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METEOR_DEALLOC_PAGES opt_meteor.h
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METEOR_DEALLOC_ABOVE opt_meteor.h
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# Various mi ISA bus flags
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COM_ESP opt_sio.h
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COM_MULTIPORT opt_sio.h
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BREAK_TO_DEBUGGER opt_comconsole.h
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ALT_BREAK_TO_DEBUGGER opt_comconsole.h
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DEV_ISA opt_isa.h
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# Include tweaks for running under the SimOS machine simulator.
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SIMOS opt_simos.h
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# options for bus/device framework
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BUS_DEBUG opt_bus.h
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# options for USB support
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UHCI_DEBUG opt_usb.h
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OHCI_DEBUG opt_usb.h
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USB_DEBUG opt_usb.h
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UGEN_DEBUG opt_usb.h
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UHID_DEBUG opt_usb.h
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UHUB_DEBUG opt_usb.h
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UKBD_DEBUG opt_usb.h
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ULPT_DEBUG opt_usb.h
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UMASS_DEBUG opt_usb.h
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UMS_DEBUG opt_usb.h
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URIO_DEBUG opt_usb.h
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UKBD_DFLT_KEYMAP opt_ukbd.h
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# Vinum options
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VINUMDEBUG opt_vinum.h
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# Embedded system options
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INIT_PATH opt_init_path.h
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ROOTDEVNAME opt_rootdevname.h
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FDC_DEBUG opt_fdc.h
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PCFCLOCK_VERBOSE opt_pcfclock.h
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PCFCLOCK_MAX_RETRIES opt_pcfclock.h
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TDFX_LINUX opt_tdfx.h
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KTR opt_global.h
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KTR_MASK opt_ktr.h
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KTR_CPUMASK opt_ktr.h
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KTR_COMPILE opt_global.h
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KTR_ENTRIES opt_global.h
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KTR_VERBOSE opt_ktr.h
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MUTEX_DEBUG opt_global.h
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WITNESS opt_global.h
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WITNESS_DDB opt_witness.h
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WITNESS_SKIPSPIN opt_witness.h
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# options for ACPI support
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ACPI_DEBUG opt_acpi.h
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ACPI_NO_SEMAPHORES opt_acpi.h
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ACPI_MAX_THREADS opt_acpi.h
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# options for DEVFS, see sys/fs/devfs/devfs.h
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NDEVFSINO opt_devfs.h
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NDEVFSOVERFLOW opt_devfs.h
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# various 'device presence' options.
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DEV_MCA opt_mca.h
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DEV_BPF opt_bpf.h
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# ed driver
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ED_NO_MIIBUS opt_ed.h
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# Polling device handling
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DEVICE_POLLING opt_global.h
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# Mutex profiling
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MUTEX_PROFILING opt_global.h
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