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Chapter 12.  Kernel Configuration Option Reference [15]

Table of Contents

EXPERIMENTAL - Prompt for development and/or incomplete code/drivers
LOCALVERSION - Local version -- append to kernel release
AUDIT - Auditing support
IKCONFIG - Kernel .config support
EMBEDDED - Configure standard kernel features (for small systems)
MODULES - Enable loadable module support
IOSCHED_NOOP - No-op I/O scheduler
IOSCHED_AS - Anticipatory I/O scheduler
IOSCHED_DEADLINE - Deadline I/O scheduler
IOSCHED_CFQ - CFQ I/O scheduler
SMP - Symmetric multi-processing support
M386 - 386
X86_GENERIC - Generic x86 support
NR_CPUS - Maximum number of CPUs (2-255)
SCHED_SMT - SMT (Hyper-Threading) scheduler support
PREEMPT_NONE - No forced preemption (server)
PREEMPT_VOLUNTARY - Voluntary kernel preemption (desktop)
PREEMPT - Preemptible kernel (low-latency desktop)
PREEMPT_BKL - Preempt the Big Kernel Lock
NOHIGHMEM - off
HIGHMEM4G - 4GB
HIGHMEM64G - 64GB
FLATMEM_MANUAL - Flat memory
DISCONTIGMEM_MANUAL - Discontiguous memory
SPARSEMEM_MANUAL - Sparse memory
SECCOMP - Enable seccomp to safely compute untrusted bytecode
KEXEC - kexec system call (experimental)
HOTPLUG_CPU - Support for hot-pluggable CPUs (experimental)
PM - Power Management support
SOFTWARE_SUSPEND - Software suspend
ACPI - ACPI Support
CPU_FREQ - CPU frequency scaling
CPU_FREQ_DEFAULT_GOV_PERFORMANCE - performance
CPU_FREQ_DEFAULT_GOV_USERSPACE - userspace
CPU_FREQ_GOV_PERFORMANCE - "Performance" CPUFreq policy governor
CPU_FREQ_GOV_POWERSAVE - "Powersave" CPUFreq policy governor
CPU_FREQ_GOV_USERSPACE - "Userspace" CPUFreq policy governor
CPU_FREQ_GOV_ONDEMAND - "Ondemand" CPUFreq policy governor
CPU_FREQ_GOV_CONSERVATIVE - "Conservative" CPUFreq policy governor
PCI - PCI support
PCCARD - PCCard (PCMCIA/CardBus) support
PCMCIA - 16-bit PCMCIA support
CARDBUS - 32-bit CardBus support
HOTPLUG_PCI - Support for PCI Hotplug (experimental)
NET - Networking support
UNIX - Unix domain sockets
INET - TCP/IP networking
IP_ADVANCED_ROUTER - IP: advanced router
NETFILTER - Network packet filtering
NET_SCHED - QoS and/or fair queueing
IRDA - IrDA (infrared) subsystem support
IRLAN - IrLAN protocol
IRNET - IrNET protocol
IRCOMM - IrCOMM protocol
IRDA_ULTRA - Ultra (connectionless) protocol
BT - Bluetooth subsystem support
IEEE80211 - Generic IEEE 802.11 Networking Stack
MTD - Memory Technology Device (MTD) support
PARPORT - Parallel port support
PNP - Plug and Play support
ISAPNP - ISA Plug and Play support
PNPBIOS - Plug and Play BIOS support (experimental)
IDE - ATA/ATAPI/MFM/RLL support
BLK_DEV_IDE - Enhanced IDE/MFM/RLL disk/cdrom/tape/floppy support
BLK_DEV_IDEDISK - Include IDE/ATA-2 DISK support
BLK_DEV_IDECD - Include IDE/ATAPI CDROM support
BLK_DEV_IDEFLOPPY - Include IDE/ATAPI FLOPPY support
SCSI - SCSI device support
BLK_DEV_SD - SCSI disk support
CHR_DEV_ST - SCSI tape support
BLK_DEV_SR - SCSI CDROM support
CHR_DEV_SG - SCSI generic support
CHR_DEV_SCH - SCSI media changer support
SCSI_MULTI_LUN - Probe all LUNs on each SCSI device
SCSI_SATA - Serial ATA (SATA) support
MD - Multiple devices driver support (RAID and LVM)
BLK_DEV_MD - RAID support
BLK_DEV_DM - Device mapper support
IEEE1394 - IEEE 1394 (FireWire) support
I2O - I2O support
NETDEVICES - Network device support
NET_ETHERNET - Ethernet (10 or 100Mbit)
NET_RADIO - Wireless LAN drivers (non-hamradio) and Wireless Extensions
PPP - PPP (point-to-point protocol) support
PPPOE - PPP over Ethernet (experimental)
ISDN - ISDN support
PHONE - Linux telephony support
INPUT - Generic input layer (needed for keyboard, mouse, ...)
VT - Virtual terminal
VT_CONSOLE - Support for console on virtual terminal
SERIAL_8250 - 8250/16550 and compatible serial support
AGP - /dev/agpgart (AGP Support)
DRM - Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)
I2C - I2C support
SPI - SPI support
HWMON - Hardware monitoring support
VIDEO_DEV - Video For Linux
DVB - DVB For Linux
FB - Support for frame buffer devices
VGA_CONSOLE - VGA text console
LOGO - Bootup logo
SOUND - Sound card support
SND - Advanced Linux sound architecture
SND_USB_AUDIO - USB Audio/MIDI driver
USB - Support for Host-side USB
USB_EHCI_HCD - EHCI HCD (USB 2.0) support
USB_OHCI_HCD - OHCI HCD support
USB_UHCI_HCD - UHCI HCD (most Intel and VIA) support
USB_STORAGE - USB mass storage support
USB_SERIAL - USB serial converter support
USB_GADGET - Support for USB Gadgets
MMC - MMC support
INFINIBAND - InfiniBand support
EDAC - EDAC core system error reporting (experimental)
EXT2_FS - Second extended filesystem support
EXT3_FS - Third extended file system support
REISERFS_FS - ReiserFS support
JFS_FS - JFS filesystem support
XFS_FS - XFS filesystem support
OCFS2_FS - OCFS2 file system support (experimental)
INOTIFY - inotify file change notification support
QUOTA - Quota support
AUTOFS_FS - Kernel automounter support
FUSE_FS - Filesystem in Userspace support
SMB_FS - SMB file system support (to mount Windows shares etc.)
CIFS - CIFS support (advanced network filesystem for Samba, Window and other CIFS compliant servers)
PROFILING - Profiling support (experimental)
OPROFILE - OProfile system profiling (experimental)
KPROBES - Kprobes (experimental)
PRINTK_TIME - Show timing information on printks
MAGIC_SYSRQ - Magic SysRq key
DEBUG_KERNEL - Kernel debugging
DEBUG_FS - Debug filesystem
SECURITY - Enable different security models
SECURITY_SELINUX - NSA SELinux Support


[15] This chapter lists the most important configuration options offered when you run make config or one of its graphical interfaces. The majority of the chapter is based on the in-kernel documentation for the different kernel configuration options, which were written by the kernel developers and released under the GPL.


 
 
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