bc093719ca
The last half year I've been working on a replacement TTY layer for the FreeBSD kernel. The new TTY layer was designed to improve the following: - Improved driver model: The old TTY layer has a driver model that is not abstract enough to make it friendly to use. A good example is the output path, where the device drivers directly access the output buffers. This means that an in-kernel PPP implementation must always convert network buffers into TTY buffers. If a PPP implementation would be built on top of the new TTY layer (still needs a hooks layer, though), it would allow the PPP implementation to directly hand the data to the TTY driver. - Improved hotplugging: With the old TTY layer, it isn't entirely safe to destroy TTY's from the system. This implementation has a two-step destructing design, where the driver first abandons the TTY. After all threads have left the TTY, the TTY layer calls a routine in the driver, which can be used to free resources (unit numbers, etc). The pts(4) driver also implements this feature, which means posix_openpt() will now return PTY's that are created on the fly. - Improved performance: One of the major improvements is the per-TTY mutex, which is expected to improve scalability when compared to the old Giant locking. Another change is the unbuffered copying to userspace, which is both used on TTY device nodes and PTY masters. Upgrading should be quite straightforward. Unlike previous versions, existing kernel configuration files do not need to be changed, except when they reference device drivers that are listed in UPDATING. Obtained from: //depot/projects/mpsafetty/... Approved by: philip (ex-mentor) Discussed: on the lists, at BSDCan, at the DevSummit Sponsored by: Snow B.V., the Netherlands dcons(4) fixed by: kan
165 lines
6.0 KiB
Plaintext
165 lines
6.0 KiB
Plaintext
#
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# GENERIC -- Generic kernel configuration file for FreeBSD/ia64
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#
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# For more information on this file, please read the handbook section on
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# Kernel Configuration Files:
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#
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# http://www.FreeBSD.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig-config.html
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#
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# The handbook is also available locally in /usr/share/doc/handbook
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# if you've installed the doc distribution, otherwise always see the
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# FreeBSD World Wide Web server (http://www.FreeBSD.org/) for the
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# latest information.
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#
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# An exhaustive list of options and more detailed explanations of the
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# device lines is also present in the ../../conf/NOTES and NOTES files.
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# If you are in doubt as to the purpose or necessity of a line, check
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# first in NOTES.
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#
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# For hardware specific information check HARDWARE.TXT
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#
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# $FreeBSD$
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cpu ITANIUM
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ident GENERIC
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makeoptions DEBUG=-g # Build kernel with debug information.
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options AUDIT # Security event auditing
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options CD9660 # ISO 9660 Filesystem
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options COMPAT_43TTY # BSD 4.3 TTY compat [KEEP THIS!]
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options COMPAT_FREEBSD6 # Compatible with FreeBSD6
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options COMPAT_FREEBSD7 # Compatible with FreeBSD7
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options DDB # Support DDB
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options FFS # Berkeley Fast Filesystem
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options GDB # Support remote GDB
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options GEOM_LABEL # Provides labelization
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options INET # InterNETworking
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options INET6 # IPv6 communications protocols
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options INVARIANTS # Enable calls of extra sanity checking
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options INVARIANT_SUPPORT # required by INVARIANTS
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options KDB # Enable kernel debugger support
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options KTRACE # ktrace(1) syscall trace support
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options MD_ROOT # MD usable as root device
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options MSDOSFS # MSDOS Filesystem
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options NFSCLIENT # Network Filesystem Client
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options NFSSERVER # Network Filesystem Server
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options NFSLOCKD # Network Lock Manager
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options NFS_ROOT # NFS usable as root device
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options PROCFS # Process filesystem (/proc)
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options PSEUDOFS # Pseudo-filesystem framework
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options SCHED_ULE # ULE scheduler
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options SCSI_DELAY=5000 # Delay (in ms) before probing SCSI
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options SCTP # Stream Control Transmission Protocol
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options SMP # Symmetric Multi-Processor support
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options SOFTUPDATES # Enable FFS soft updates support
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options STACK # stack(9) support
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options SYSVMSG # SYSV-style message queues
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options SYSVSEM # SYSV-style semaphores
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options SYSVSHM # SYSV-style shared memory
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options UFS_ACL # Support for access control lists
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options UFS_DIRHASH # Hash-based directory lookup scheme
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options UFS_GJOURNAL # Enable gjournal-based UFS journaling
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options WITNESS # Enable checks to detect deadlocks and cycles
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options WITNESS_SKIPSPIN # Don't run witness on spinlocks for speed
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options _KPOSIX_PRIORITY_SCHEDULING # Posix P1003_1B RT extensions
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options HWPMC_HOOKS # Necessary kernel hooks for hwpmc(4)
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# Various "busses"
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device firewire # FireWire bus code
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device miibus # MII bus support (Ethernet)
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device pci # PCI bus support
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device scbus # SCSI bus (required for SCSI)
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device usb # USB Bus (required for USB)
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# ATA and ATAPI devices
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device ata # ATA controller
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device atadisk # ATA disk drives
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device atapicd # ATAPI CDROM drives
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device atapifd # ATAPI floppy drives
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device ataraid # ATA RAID drives
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# SCSI Controllers
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device ahc # AHA2940 and AIC7xxx devices
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device ahd # AHA39320/29320 and AIC79xx devices
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device isp # Qlogic family
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device mpt # LSI-Logic MPT-Fusion
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device sym # NCR/Symbios Logic
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# RAID controllers interfaced to the SCSI subsystem
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device ciss # Compaq Smart RAID 5*
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device dpt # DPT Smartcache III, IV
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device iir # Intel Integrated RAID
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device mly # Mylex AcceleRAID/eXtremeRAID
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# SCSI peripherals
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device cd # CD-ROM, DVD-ROM etc.
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device ch # Media changer
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device da # Direct Access (ie disk)
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device pass # Passthrough (direct SCSI access)
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device sa # Sequential Access (ie tape)
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device ses # Environmental Services (and SAF-TE)
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# RAID controllers
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device aac # Adaptec FSA RAID
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device aacp # SCSI passthrough for aac (requires CAM)
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device amr # AMI MegaRAID
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device ida # Compaq Smart RAID
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device mlx # Mylex DAC960 family
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# USB host controllers and peripherals
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device ehci # EHCI host controller
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device ohci # OHCI PCI->USB interface
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device ugen # Generic device
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device uhci # UHCI PCI->USB interface
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device uhid # Human Interface Devices
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device ukbd # Keyboard
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device ulpt # Printer
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device umass # Disks/Mass storage (need scbus & da)
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device ums # Mouse
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# PCI Ethernet NICs.
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device de # DEC/Intel DC21x4x (``Tulip'')
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device em # Intel PRO/1000 adapter Gigabit Ethernet Card
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device le # AMD Am7900 LANCE and Am79C9xx PCnet
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device txp # 3Com 3cR990 (``Typhoon'')
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device vx # 3Com 3c590, 3c595 (``Vortex'')
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# PCI Ethernet NICs that use the common MII bus controller code.
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device bge # Broadcom BCM570xx Gigabit Ethernet
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device dc # DEC/Intel 21143 and various workalikes
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device fxp # Intel EtherExpress PRO/100B (82557, 82558)
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device pcn # AMD Am79C97x PCI 10/100 (precedence over 'le')
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device re # RealTek 8139C+/8169/8169S/8110S
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device rl # RealTek 8129/8139
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device sf # Adaptec AIC-6915 (``Starfire'')
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device sis # Silicon Integrated Systems SiS 900/SiS 7016
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device xl # 3Com 3c90x ("Boomerang", "Cyclone")
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# USB Ethernet
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device aue # ADMtek USB Ethernet
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device cdce # Generic USB over Ethernet
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device cue # CATC USB Ethernet
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device kue # Kawasaki LSI USB Ethernet
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# FireWire support
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device sbp # SCSI over FireWire (need scbus & da)
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# Various (pseudo) devices
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device ether # Ethernet support
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device faith # IPv6-to-IPv4 relaying (translation)
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device gif # IPv6 and IPv4 tunneling
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device loop # Network loopback
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device md # Memory "disks"
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device pty # BSD-style compatibility pseudo ttys
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device puc # Multi I/O cards and multi-channel UARTs
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device random # Entropy device
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device tun # Packet tunnel.
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device uart # Serial port (UART)
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device firmware # firmware assist module
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# The `bpf' device enables the Berkeley Packet Filter.
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# Be aware of the administrative consequences of enabling this!
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# Note that 'bpf' is required for DHCP.
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device bpf # Berkeley packet filter
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