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sl82c105: Switch to ref counting API
[safe/jmp/linux-2.6] / Documentation / kernel-parameters.txt
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 0d189c9..09220a1 100644 (file)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -35,7 +35,6 @@ parameter is applicable:
        APM     Advanced Power Management support is enabled.
        AX25    Appropriate AX.25 support is enabled.
        CD      Appropriate CD support is enabled.
        APM     Advanced Power Management support is enabled.
        AX25    Appropriate AX.25 support is enabled.
        CD      Appropriate CD support is enabled.
-       DEVFS   devfs support is enabled.
        DRM     Direct Rendering Management support is enabled.
        EDD     BIOS Enhanced Disk Drive Services (EDD) is enabled
        EFI     EFI Partitioning (GPT) is enabled
        DRM     Direct Rendering Management support is enabled.
        EDD     BIOS Enhanced Disk Drive Services (EDD) is enabled
        EFI     EFI Partitioning (GPT) is enabled
@@ -49,6 +48,7 @@ parameter is applicable:
        ISAPNP  ISA PnP code is enabled.
        ISDN    Appropriate ISDN support is enabled.
        JOY     Appropriate joystick support is enabled.
        ISAPNP  ISA PnP code is enabled.
        ISDN    Appropriate ISDN support is enabled.
        JOY     Appropriate joystick support is enabled.
+       LIBATA  Libata driver is enabled
        LP      Printer support is enabled.
        LOOP    Loopback device support is enabled.
        M68k    M68k architecture is enabled.
        LP      Printer support is enabled.
        LOOP    Loopback device support is enabled.
        M68k    M68k architecture is enabled.
@@ -64,6 +64,7 @@ parameter is applicable:
        GENERIC_TIME The generic timeofday code is enabled.
        NFS     Appropriate NFS support is enabled.
        OSS     OSS sound support is enabled.
        GENERIC_TIME The generic timeofday code is enabled.
        NFS     Appropriate NFS support is enabled.
        OSS     OSS sound support is enabled.
+       PV_OPS  A paravirtualized kernel
        PARIDE  The ParIDE subsystem is enabled.
        PARISC  The PA-RISC architecture is enabled.
        PCI     PCI bus support is enabled.
        PARIDE  The ParIDE subsystem is enabled.
        PARISC  The PA-RISC architecture is enabled.
        PCI     PCI bus support is enabled.
@@ -79,6 +80,7 @@ parameter is applicable:
                        Documentation/scsi/.
        SELINUX SELinux support is enabled.
        SERIAL  Serial support is enabled.
                        Documentation/scsi/.
        SELINUX SELinux support is enabled.
        SERIAL  Serial support is enabled.
+       SH      SuperH architecture is enabled.
        SMP     The kernel is an SMP kernel.
        SPARC   Sparc architecture is enabled.
        SWSUSP  Software suspend is enabled.
        SMP     The kernel is an SMP kernel.
        SPARC   Sparc architecture is enabled.
        SWSUSP  Software suspend is enabled.
@@ -105,17 +107,28 @@ loader, and have no meaning to the kernel directly.
 Do not modify the syntax of boot loader parameters without extreme
 need or coordination with <Documentation/i386/boot.txt>.
 
 Do not modify the syntax of boot loader parameters without extreme
 need or coordination with <Documentation/i386/boot.txt>.
 
+There are also arch-specific kernel-parameters not documented here.
+See for example <Documentation/x86_64/boot-options.txt>.
+
 Note that ALL kernel parameters listed below are CASE SENSITIVE, and that
 a trailing = on the name of any parameter states that that parameter will
 be entered as an environment variable, whereas its absence indicates that
 it will appear as a kernel argument readable via /proc/cmdline by programs
 running once the system is up.
 
 Note that ALL kernel parameters listed below are CASE SENSITIVE, and that
 a trailing = on the name of any parameter states that that parameter will
 be entered as an environment variable, whereas its absence indicates that
 it will appear as a kernel argument readable via /proc/cmdline by programs
 running once the system is up.
 
+The number of kernel parameters is not limited, but the length of the
+complete command line (parameters including spaces etc.) is limited to
+a fixed number of characters. This limit depends on the architecture
+and is between 256 and 4096 characters. It is defined in the file
+./include/asm/setup.h as COMMAND_LINE_SIZE.
+
+
        53c7xx=         [HW,SCSI] Amiga SCSI controllers
                        See header of drivers/scsi/53c7xx.c.
                        See also Documentation/scsi/ncr53c7xx.txt.
 
        53c7xx=         [HW,SCSI] Amiga SCSI controllers
                        See header of drivers/scsi/53c7xx.c.
                        See also Documentation/scsi/ncr53c7xx.txt.
 
-       acpi=           [HW,ACPI] Advanced Configuration and Power Interface
+       acpi=           [HW,ACPI,X86-64,i386]
+                       Advanced Configuration and Power Interface
                        Format: { force | off | ht | strict | noirq }
                        force -- enable ACPI if default was off
                        off -- disable ACPI if default was on
                        Format: { force | off | ht | strict | noirq }
                        force -- enable ACPI if default was off
                        off -- disable ACPI if default was on
@@ -126,6 +139,12 @@ running once the system is up.
 
                        See also Documentation/pm.txt, pci=noacpi
 
 
                        See also Documentation/pm.txt, pci=noacpi
 
+       acpi_apic_instance=     [ACPI, IOAPIC]
+                       Format: <int>
+                       2: use 2nd APIC table, if available
+                       1,0: use 1st APIC table
+                       default: 0
+
        acpi_sleep=     [HW,ACPI] Sleep options
                        Format: { s3_bios, s3_mode }
                        See Documentation/power/video.txt
        acpi_sleep=     [HW,ACPI] Sleep options
                        Format: { s3_bios, s3_mode }
                        See Documentation/power/video.txt
@@ -158,20 +177,46 @@ running once the system is up.
        acpi_skip_timer_override [HW,ACPI]
                        Recognize and ignore IRQ0/pin2 Interrupt Override.
                        For broken nForce2 BIOS resulting in XT-PIC timer.
        acpi_skip_timer_override [HW,ACPI]
                        Recognize and ignore IRQ0/pin2 Interrupt Override.
                        For broken nForce2 BIOS resulting in XT-PIC timer.
+       acpi_use_timer_override [HW,ACPI}
+                       Use timer override. For some broken Nvidia NF5 boards
+                       that require a timer override, but don't have
+                       HPET
 
 
-       acpi_dbg_layer= [HW,ACPI]
+       acpi.debug_layer=       [HW,ACPI]
                        Format: <int>
                        Each bit of the <int> indicates an ACPI debug layer,
                        1: enable, 0: disable. It is useful for boot time
                        debugging. After system has booted up, it can be set
                        Format: <int>
                        Each bit of the <int> indicates an ACPI debug layer,
                        1: enable, 0: disable. It is useful for boot time
                        debugging. After system has booted up, it can be set
-                       via /proc/acpi/debug_layer.
-
-       acpi_dbg_level= [HW,ACPI]
+                       via /sys/module/acpi/parameters/debug_layer.
+                       CONFIG_ACPI_DEBUG must be enabled for this to produce any output.
+                       Available bits (add the numbers together) to enable debug output
+                       for specific parts of the ACPI subsystem:
+                       0x01 utilities 0x02 hardware 0x04 events 0x08 tables
+                       0x10 namespace 0x20 parser 0x40 dispatcher
+                       0x80 executer 0x100 resources 0x200 acpica debugger
+                       0x400 os services 0x800 acpica disassembler.
+                       The number can be in decimal or prefixed with 0x in hex.
+                       Warning: Many of these options can produce a lot of
+                       output and make your system unusable. Be very careful.
+
+       acpi.debug_level=       [HW,ACPI]
                        Format: <int>
                        Each bit of the <int> indicates an ACPI debug level,
                        1: enable, 0: disable. It is useful for boot time
                        debugging. After system has booted up, it can be set
                        Format: <int>
                        Each bit of the <int> indicates an ACPI debug level,
                        1: enable, 0: disable. It is useful for boot time
                        debugging. After system has booted up, it can be set
-                       via /proc/acpi/debug_level.
+                       via /sys/module/acpi/parameters/debug_level.
+                       CONFIG_ACPI_DEBUG must be enabled for this to produce any output.
+                       Available bits (add the numbers together) to enable different
+                       debug output levels of the ACPI subsystem:
+                       0x01 error 0x02 warn 0x04 init 0x08 debug object
+                       0x10 info 0x20 init names 0x40 parse 0x80 load
+                       0x100 dispatch 0x200 execute 0x400 names 0x800 operation region
+                       0x1000 bfield 0x2000 tables 0x4000 values 0x8000 objects
+                       0x10000 resources 0x20000 user requests 0x40000 package.
+                       The number can be in decimal or prefixed with 0x in hex.
+                       Warning: Many of these options can produce a lot of
+                       output and make your system unusable. Be very careful.
+
 
        acpi_fake_ecdt  [HW,ACPI] Workaround failure due to BIOS lacking ECDT
 
 
        acpi_fake_ecdt  [HW,ACPI] Workaround failure due to BIOS lacking ECDT
 
@@ -283,9 +328,6 @@ running once the system is up.
 
        autotest        [IA64]
 
 
        autotest        [IA64]
 
-       awe=            [HW,OSS] AWE32/SB32/AWE64 wave table synth
-                       Format: <io>,<memsize>,<isapnp>
-
        aztcd=          [HW,CD] Aztech CD268 CDROM driver
                        Format: <io>,0x79 (?)
 
        aztcd=          [HW,CD] Aztech CD268 CDROM driver
                        Format: <io>,0x79 (?)
 
@@ -349,11 +391,16 @@ running once the system is up.
 
        clock=          [BUGS=IA-32, HW] gettimeofday clocksource override.
                        [Deprecated]
 
        clock=          [BUGS=IA-32, HW] gettimeofday clocksource override.
                        [Deprecated]
-                       Forces specified clocksource (if avaliable) to be used
+                       Forces specified clocksource (if available) to be used
                        when calculating gettimeofday(). If specified
                        when calculating gettimeofday(). If specified
-                       clocksource is not avalible, it defaults to PIT.
+                       clocksource is not available, it defaults to PIT.
                        Format: { pit | tsc | cyclone | pmtmr }
 
                        Format: { pit | tsc | cyclone | pmtmr }
 
+       code_bytes      [IA32] How many bytes of object code to print in an
+                       oops report.
+                       Range: 0 - 8192
+                       Default: 64
+
        disable_8254_timer
        enable_8254_timer
                        [IA32/X86_64] Disable/Enable interrupt 0 timer routing
        disable_8254_timer
        enable_8254_timer
                        [IA32/X86_64] Disable/Enable interrupt 0 timer routing
@@ -436,12 +483,42 @@ running once the system is up.
 
        debug           [KNL] Enable kernel debugging (events log level).
 
 
        debug           [KNL] Enable kernel debugging (events log level).
 
+       debug_locks_verbose=
+                       [KNL] verbose self-tests
+                       Format=<0|1>
+                       Print debugging info while doing the locking API
+                       self-tests.
+                       We default to 0 (no extra messages), setting it to
+                       1 will print _a lot_ more information - normally
+                       only useful to kernel developers.
+
        decnet=         [HW,NET]
                        Format: <area>[,<node>]
                        See also Documentation/networking/decnet.txt.
 
        decnet=         [HW,NET]
                        Format: <area>[,<node>]
                        See also Documentation/networking/decnet.txt.
 
-       devfs=          [DEVFS]
-                       See Documentation/filesystems/devfs/boot-options.
+       default_blu=    [VT]
+                       Format: <blue0>,<blue1>,<blue2>,...,<blue15>
+                       Change the default blue palette of the console.
+                       This is a 16-member array composed of values
+                       ranging from 0-255.
+
+       default_grn=    [VT]
+                       Format: <green0>,<green1>,<green2>,...,<green15>
+                       Change the default green palette of the console.
+                       This is a 16-member array composed of values
+                       ranging from 0-255.
+
+       default_red=    [VT]
+                       Format: <red0>,<red1>,<red2>,...,<red15>
+                       Change the default red palette of the console.
+                       This is a 16-member array composed of values
+                       ranging from 0-255.
+
+       default_utf8=   [VT]
+                       Format=<0|1>
+                       Set system-wide default UTF-8 mode for all tty's.
+                       Default is 0 and by setting to 1, it enables UTF-8
+                       mode for all newly opened or allocated terminals.
 
        dhash_entries=  [KNL]
                        Set number of hash buckets for dentry cache.
 
        dhash_entries=  [KNL]
                        Set number of hash buckets for dentry cache.
@@ -463,7 +540,7 @@ running once the system is up.
 
        dtc3181e=       [HW,SCSI]
 
 
        dtc3181e=       [HW,SCSI]
 
-       earlyprintk=    [IA-32,X86-64]
+       earlyprintk=    [IA-32,X86-64,SH]
                        earlyprintk=vga
                        earlyprintk=serial[,ttySn[,baudrate]]
 
                        earlyprintk=vga
                        earlyprintk=serial[,ttySn[,baudrate]]
 
@@ -524,10 +601,6 @@ running once the system is up.
                        Default value is 0.
                        Value can be changed at runtime via /selinux/enforce.
 
                        Default value is 0.
                        Value can be changed at runtime via /selinux/enforce.
 
-       es1370=         [HW,OSS]
-                       Format: <lineout>[,<micbias>]
-                       See also header of sound/oss/es1370.c.
-
        es1371=         [HW,OSS]
                        Format: <spdif>,[<nomix>,[<amplifier>]]
                        See also header of sound/oss/es1371.c.
        es1371=         [HW,OSS]
                        Format: <spdif>,[<nomix>,[<amplifier>]]
                        See also header of sound/oss/es1371.c.
@@ -539,6 +612,13 @@ running once the system is up.
        eurwdt=         [HW,WDT] Eurotech CPU-1220/1410 onboard watchdog.
                        Format: <io>[,<irq>]
 
        eurwdt=         [HW,WDT] Eurotech CPU-1220/1410 onboard watchdog.
                        Format: <io>[,<irq>]
 
+       failslab=
+       fail_page_alloc=
+       fail_make_request=[KNL]
+                       General fault injection mechanism.
+                       Format: <interval>,<probability>,<space>,<times>
+                       See also /Documentation/fault-injection/.
+
        fd_mcs=         [HW,SCSI]
                        See header of drivers/scsi/fd_mcs.c.
 
        fd_mcs=         [HW,SCSI]
                        See header of drivers/scsi/fd_mcs.c.
 
@@ -548,9 +628,6 @@ running once the system is up.
        floppy=         [HW]
                        See Documentation/floppy.txt.
 
        floppy=         [HW]
                        See Documentation/floppy.txt.
 
-       ftape=          [HW] Floppy Tape subsystem debugging options.
-                       See Documentation/ftape.txt.
-
        gamecon.map[2|3]=
                        [HW,JOY] Multisystem joystick and NES/SNES/PSX pad
                        support via parallel port (up to 5 devices per port)
        gamecon.map[2|3]=
                        [HW,JOY] Multisystem joystick and NES/SNES/PSX pad
                        support via parallel port (up to 5 devices per port)
@@ -568,11 +645,6 @@ running once the system is up.
        gscd=           [HW,CD]
                        Format: <io>
 
        gscd=           [HW,CD]
                        Format: <io>
 
-       gt96100eth=     [NET] MIPS GT96100 Advanced Communication Controller
-
-       gus=            [HW,OSS]
-                       Format: <io>,<irq>,<dma>,<dma16>
-
        gvp11=          [HW,SCSI]
 
        hashdist=       [KNL,NUMA] Large hashes allocated during boot
        gvp11=          [HW,SCSI]
 
        hashdist=       [KNL,NUMA] Large hashes allocated during boot
@@ -593,16 +665,18 @@ running once the system is up.
                        highmem otherwise. This also works to reduce highmem
                        size on bigger boxes.
 
                        highmem otherwise. This also works to reduce highmem
                        size on bigger boxes.
 
+       highres=        [KNL] Enable/disable high resolution timer mode.
+                       Valid parameters: "on", "off"
+                       Default: "on"
+
        hisax=          [HW,ISDN]
                        See Documentation/isdn/README.HiSax.
 
        hugepages=      [HW,IA-32,IA-64] Maximal number of HugeTLB pages.
 
        hisax=          [HW,ISDN]
                        See Documentation/isdn/README.HiSax.
 
        hugepages=      [HW,IA-32,IA-64] Maximal number of HugeTLB pages.
 
-       noirqbalance    [IA-32,SMP,KNL] Disable kernel irq balancing
-
        i8042.direct    [HW] Put keyboard port into non-translated mode
        i8042.direct    [HW] Put keyboard port into non-translated mode
-       i8042.dumbkbd   [HW] Pretend that controlled can only read data from
-                            keyboard and can not control its state
+       i8042.dumbkbd   [HW] Pretend that controller can only read data from
+                            keyboard and cannot control its state
                             (Don't attempt to blink the leds)
        i8042.noaux     [HW] Don't check for auxiliary (== mouse) port
        i8042.nokbd     [HW] Don't check/create keyboard port
                             (Don't attempt to blink the leds)
        i8042.noaux     [HW] Don't check for auxiliary (== mouse) port
        i8042.nokbd     [HW] Don't check/create keyboard port
@@ -646,8 +720,19 @@ running once the system is up.
        idebus=         [HW] (E)IDE subsystem - VLB/PCI bus speed
                        See Documentation/ide.txt.
 
        idebus=         [HW] (E)IDE subsystem - VLB/PCI bus speed
                        See Documentation/ide.txt.
 
-       idle=           [HW]
-                       Format: idle=poll or idle=halt
+       idle=           [X86]
+                       Format: idle=poll or idle=mwait
+                       Poll forces a polling idle loop that can slightly improves the performance
+                       of waking up a idle CPU, but will use a lot of power and make the system
+                       run hot. Not recommended.
+                       idle=mwait. On systems which support MONITOR/MWAIT but the kernel chose
+                       to not use it because it doesn't save as much power as a normal idle
+                       loop use the MONITOR/MWAIT idle loop anyways. Performance should be the same
+                       as idle=poll.
+
+       ignore_loglevel [KNL]
+                       Ignore loglevel setting - this will print /all/
+                       kernel messages to the console. Useful for debugging.
 
        ihash_entries=  [KNL]
                        Set number of hash buckets for inode cache.
 
        ihash_entries=  [KNL]
                        Set number of hash buckets for inode cache.
@@ -669,14 +754,6 @@ running once the system is up.
        inport.irq=     [HW] Inport (ATI XL and Microsoft) busmouse driver
                        Format: <irq>
 
        inport.irq=     [HW] Inport (ATI XL and Microsoft) busmouse driver
                        Format: <irq>
 
-       combined_mode=  [HW] control which driver uses IDE ports in combined
-                       mode: legacy IDE driver, libata, or both
-                       (in the libata case, libata.atapi_enabled=1 may be
-                       useful as well).  Note that using the ide or libata
-                       options may affect your device naming (e.g. by
-                       changing hdc to sdb).
-                       Format: combined (default), ide, or libata
-
        inttest=        [IA64]
 
        io7=            [HW] IO7 for Marvel based alpha systems
        inttest=        [IA64]
 
        io7=            [HW] IO7 for Marvel based alpha systems
@@ -692,6 +769,12 @@ running once the system is up.
        ips=            [HW,SCSI] Adaptec / IBM ServeRAID controller
                        See header of drivers/scsi/ips.c.
 
        ips=            [HW,SCSI] Adaptec / IBM ServeRAID controller
                        See header of drivers/scsi/ips.c.
 
+       ports=          [IP_VS_FTP] IPVS ftp helper module
+                       Default is 21.
+                       Up to 8 (IP_VS_APP_MAX_PORTS) ports
+                       may be specified.
+                       Format: <port>,<port>....
+
        irqfixup        [HW]
                        When an interrupt is not handled search all handlers
                        for it. Intended to get systems with badly broken
        irqfixup        [HW]
                        When an interrupt is not handled search all handlers
                        for it. Intended to get systems with badly broken
@@ -707,7 +790,12 @@ running once the system is up.
                        Format: <RDP>,<reset>,<pci_scan>,<verbosity>
 
        isolcpus=       [KNL,SMP] Isolate CPUs from the general scheduler.
                        Format: <RDP>,<reset>,<pci_scan>,<verbosity>
 
        isolcpus=       [KNL,SMP] Isolate CPUs from the general scheduler.
-                       Format: <cpu number>,...,<cpu number>
+                       Format:
+                       <cpu number>,...,<cpu number>
+                       or
+                       <cpu number>-<cpu number>  (must be a positive range in ascending order)
+                       or a mixture
+                       <cpu number>,...,<cpu number>-<cpu number>
                        This option can be used to specify one or more CPUs
                        to isolate from the general SMP balancing and scheduling
                        algorithms. The only way to move a process onto or off
                        This option can be used to specify one or more CPUs
                        to isolate from the general SMP balancing and scheduling
                        algorithms. The only way to move a process onto or off
@@ -738,9 +826,17 @@ running once the system is up.
        lapic           [IA-32,APIC] Enable the local APIC even if BIOS
                        disabled it.
 
        lapic           [IA-32,APIC] Enable the local APIC even if BIOS
                        disabled it.
 
+       lapic_timer_c2_ok       [IA-32,x86-64,APIC] trust the local apic timer in
+                       C2 power state.
+
        lasi=           [HW,SCSI] PARISC LASI driver for the 53c700 chip
                        Format: addr:<io>,irq:<irq>
 
        lasi=           [HW,SCSI] PARISC LASI driver for the 53c700 chip
                        Format: addr:<io>,irq:<irq>
 
+       legacy_serial.force [HW,IA-32,X86-64]
+                       Probe for COM ports at legacy addresses even
+                       if PNPBIOS or ACPI should describe them.  This
+                       is for working around firmware defects.
+
        llsc*=          [IA64] See function print_params() in
                        arch/ia64/sn/kernel/llsc4.c.
 
        llsc*=          [IA64] See function print_params() in
                        arch/ia64/sn/kernel/llsc4.c.
 
@@ -825,18 +921,19 @@ running once the system is up.
                        (machvec) in a generic kernel.
                        Example: machvec=hpzx1_swiotlb
 
                        (machvec) in a generic kernel.
                        Example: machvec=hpzx1_swiotlb
 
-       mad16=          [HW,OSS] Format:
-                       <io>,<irq>,<dma>,<dma16>,<mpu_io>,<mpu_irq>,<joystick>
-
-       maui=           [HW,OSS]
-                       Format: <io>,<irq>
-
        max_loop=       [LOOP] Maximum number of loopback devices that can
                        be mounted
                        Format: <1-256>
 
        maxcpus=        [SMP] Maximum number of processors that an SMP kernel
        max_loop=       [LOOP] Maximum number of loopback devices that can
                        be mounted
                        Format: <1-256>
 
        maxcpus=        [SMP] Maximum number of processors that an SMP kernel
-                       should make use of
+                       should make use of.
+                       Using "nosmp" or "maxcpus=0" will disable SMP
+                       entirely (the MPS table probe still happens, though).
+                       A command-line option of "maxcpus=<NUM>", where <NUM>
+                       is an integer greater than 0, limits the maximum number
+                       of CPUs activated in SMP mode to <NUM>.
+                       Using "maxcpus=1" on an SMP kernel is the trivial
+                       case of an SMP kernel with only one CPU.
 
        max_addr=[KMG]  [KNL,BOOT,ia64] All physical memory greater than or
                        equal to this physical address is ignored.
 
        max_addr=[KMG]  [KNL,BOOT,ia64] All physical memory greater than or
                        equal to this physical address is ignored.
@@ -1011,6 +1108,14 @@ running once the system is up.
                        emulation library even if a 387 maths coprocessor
                        is present.
 
                        emulation library even if a 387 maths coprocessor
                        is present.
 
+       noacpi          [LIBATA] Disables use of ACPI in libata suspend/resume
+                       when set.
+                       Format: <int>
+
+       noaliencache    [MM, NUMA] Disables the allcoation of alien caches in
+                       the slab allocator.  Saves per-node memory, but will
+                       impact performance on real NUMA hardware.
+
        noalign         [KNL,ARM]
 
        noapic          [SMP,APIC] Tells the kernel to not make use of any
        noalign         [KNL,ARM]
 
        noapic          [SMP,APIC] Tells the kernel to not make use of any
@@ -1024,6 +1129,8 @@ running once the system is up.
 
        nocache         [ARM]
 
 
        nocache         [ARM]
 
+       nodelayacct     [KNL] Disable per-task delay accounting
+
        nodisconnect    [HW,SCSI,M68K] Disables SCSI disconnects.
 
        noexec          [IA-64]
        nodisconnect    [HW,SCSI,M68K] Disables SCSI disconnects.
 
        noexec          [IA-64]
@@ -1049,9 +1156,18 @@ running once the system is up.
                        in certain environments such as networked servers or
                        real-time systems.
 
                        in certain environments such as networked servers or
                        real-time systems.
 
+       nohz=           [KNL] Boottime enable/disable dynamic ticks
+                       Valid arguments: on, off
+                       Default: on
+
+       noirqbalance    [IA-32,SMP,KNL] Disable kernel irq balancing
+
        noirqdebug      [IA-32] Disables the code which attempts to detect and
                        disable unhandled interrupt sources.
 
        noirqdebug      [IA-32] Disables the code which attempts to detect and
                        disable unhandled interrupt sources.
 
+       no_timer_check  [IA-32,X86_64,APIC] Disables the code which tests for
+                       broken timer IRQ sources.
+
        noisapnp        [ISAPNP] Disables ISA PnP code.
 
        noinitrd        [RAM] Tells the kernel not to load any configured
        noisapnp        [ISAPNP] Disables ISA PnP code.
 
        noinitrd        [RAM] Tells the kernel not to load any configured
@@ -1061,6 +1177,8 @@ running once the system is up.
 
        nolapic         [IA-32,APIC] Do not enable or use the local APIC.
 
 
        nolapic         [IA-32,APIC] Do not enable or use the local APIC.
 
+       nolapic_timer   [IA-32,APIC] Do not use the local APIC timer.
+
        noltlbs         [PPC] Do not use large page/tlb entries for kernel
                        lowmem mapping on PPC40x.
 
        noltlbs         [PPC] Do not use large page/tlb entries for kernel
                        lowmem mapping on PPC40x.
 
@@ -1068,6 +1186,11 @@ running once the system is up.
 
        nomce           [IA-32] Machine Check Exception
 
 
        nomce           [IA-32] Machine Check Exception
 
+       noreplace-paravirt      [IA-32,PV_OPS] Don't patch paravirt_ops
+
+       noreplace-smp   [IA-32,SMP] Don't replace SMP instructions
+                       with UP alternatives
+
        noresidual      [PPC] Don't use residual data on PReP machines.
 
        noresume        [SWSUSP] Disables resume and restores original swap
        noresidual      [PPC] Don't use residual data on PReP machines.
 
        noresume        [SWSUSP] Disables resume and restores original swap
@@ -1096,9 +1219,6 @@ running once the system is up.
        opl3=           [HW,OSS]
                        Format: <io>
 
        opl3=           [HW,OSS]
                        Format: <io>
 
-       opl3sa=         [HW,OSS]
-                       Format: <io>,<irq>,<dma>,<dma2>,<mpu_io>,<mpu_irq>
-
        opl3sa2=        [HW,OSS] Format:
                        <io>,<irq>,<dma>,<dma2>,<mss_io>,<mpu_io>,<ymode>,<loopback>[,<isapnp>,<multiple]
 
        opl3sa2=        [HW,OSS] Format:
                        <io>,<irq>,<dma>,<dma2>,<mss_io>,<mpu_io>,<ymode>,<loopback>[,<isapnp>,<multiple]
 
@@ -1227,6 +1347,21 @@ running once the system is up.
                                bootloader. This is currently used on
                                IXP2000 systems where the bus has to be
                                configured a certain way for adjunct CPUs.
                                bootloader. This is currently used on
                                IXP2000 systems where the bus has to be
                                configured a certain way for adjunct CPUs.
+               noearly         [X86] Don't do any early type 1 scanning.
+                               This might help on some broken boards which
+                               machine check when some devices' config space
+                               is read. But various workarounds are disabled
+                               and some IOMMU drivers will not work.
+               bfsort          Sort PCI devices into breadth-first order.
+                               This sorting is done to get a device
+                               order compatible with older (<= 2.4) kernels.
+               nobfsort        Don't sort PCI devices into breadth-first order.
+               cbiosize=nn[KMG]        The fixed amount of bus space which is
+                               reserved for the CardBus bridge's IO window.
+                               The default value is 256 bytes.
+               cbmemsize=nn[KMG]       The fixed amount of bus space which is
+                               reserved for the CardBus bridge's memory
+                               window. The default value is 64 megabytes.
 
        pcmv=           [HW,PCMCIA] BadgePAD 4
 
 
        pcmv=           [HW,PCMCIA] BadgePAD 4
 
@@ -1276,6 +1411,7 @@ running once the system is up.
                        Param: "schedule" - profile schedule points.
                        Param: <number> - step/bucket size as a power of 2 for
                                statistical time based profiling.
                        Param: "schedule" - profile schedule points.
                        Param: <number> - step/bucket size as a power of 2 for
                                statistical time based profiling.
+                       Param: "sleep" - profile D-state sleeping (millisecs)
 
        processor.max_cstate=   [HW,ACPI]
                        Limit processor to maximum C-state
 
        processor.max_cstate=   [HW,ACPI]
                        Limit processor to maximum C-state
@@ -1309,7 +1445,7 @@ running once the system is up.
        pt.             [PARIDE]
                        See Documentation/paride.txt.
 
        pt.             [PARIDE]
                        See Documentation/paride.txt.
 
-       quiet=          [KNL] Disable log messages
+       quiet           [KNL] Disable most log messages
 
        r128=           [HW,DRM]
 
 
        r128=           [HW,DRM]
 
@@ -1335,10 +1471,6 @@ running once the system is up.
        rcu.qlowmark=   [KNL,BOOT] Set threshold of queued
                        RCU callbacks below which batch limiting is re-enabled.
 
        rcu.qlowmark=   [KNL,BOOT] Set threshold of queued
                        RCU callbacks below which batch limiting is re-enabled.
 
-       rcu.rsinterval= [KNL,BOOT,SMP] Set the number of additional
-                       RCU callbacks to queued before forcing reschedule
-                       on all cpus.
-
        rdinit=         [KNL]
                        Format: <full_path>
                        Run specified binary instead of /init from the ramdisk,
        rdinit=         [KNL]
                        Format: <full_path>
                        Run specified binary instead of /init from the ramdisk,
@@ -1346,13 +1478,29 @@ running once the system is up.
 
        reboot=         [BUGS=IA-32,BUGS=ARM,BUGS=IA-64] Rebooting mode
                        Format: <reboot_mode>[,<reboot_mode2>[,...]]
 
        reboot=         [BUGS=IA-32,BUGS=ARM,BUGS=IA-64] Rebooting mode
                        Format: <reboot_mode>[,<reboot_mode2>[,...]]
-                       See arch/*/kernel/reboot.c.
+                       See arch/*/kernel/reboot.c or arch/*/kernel/process.c                   
 
        reserve=        [KNL,BUGS] Force the kernel to ignore some iomem area
 
 
        reserve=        [KNL,BUGS] Force the kernel to ignore some iomem area
 
+       reservetop=     [IA-32]
+                       Format: nn[KMG]
+                       Reserves a hole at the top of the kernel virtual
+                       address space.
+
+       reset_devices   [KNL] Force drivers to reset the underlying device
+                       during initialization.
+
        resume=         [SWSUSP]
                        Specify the partition device for software suspend
 
        resume=         [SWSUSP]
                        Specify the partition device for software suspend
 
+       resume_offset=  [SWSUSP]
+                       Specify the offset from the beginning of the partition
+                       given by "resume=" at which the swap header is located,
+                       in <PAGE_SIZE> units (needed only for swap files).
+                       See  Documentation/power/swsusp-and-swap-files.txt
+
+       retain_initrd   [RAM] Keep initrd memory after extraction
+
        rhash_entries=  [KNL,NET]
                        Set number of hash buckets for route cache
 
        rhash_entries=  [KNL,NET]
                        Set number of hash buckets for route cache
 
@@ -1403,6 +1551,11 @@ running once the system is up.
 
        scsi_logging=   [SCSI]
 
 
        scsi_logging=   [SCSI]
 
+       scsi_mod.scan=  [SCSI] sync (default) scans SCSI busses as they are
+                       discovered.  async scans them in kernel threads,
+                       allowing boot to proceed.  none ignores them, expecting
+                       user space to do the scan.
+
        selinux         [SELINUX] Disable or enable SELinux at boot time.
                        Format: { "0" | "1" }
                        See security/selinux/Kconfig help text.
        selinux         [SELINUX] Disable or enable SELinux at boot time.
                        Format: { "0" | "1" }
                        See security/selinux/Kconfig help text.
@@ -1425,9 +1578,6 @@ running once the system is up.
 
        sg_def_reserved_size=   [SCSI]
 
 
        sg_def_reserved_size=   [SCSI]
 
-       sgalaxy=        [HW,OSS]
-                       Format: <io>,<irq>,<dma>,<dma2>,<sgbase>
-
        shapers=        [NET]
                        Maximal number of shapers.
 
        shapers=        [NET]
                        Maximal number of shapers.
 
@@ -1446,6 +1596,20 @@ running once the system is up.
        smart2=         [HW]
                        Format: <io1>[,<io2>[,...,<io8>]]
 
        smart2=         [HW]
                        Format: <io1>[,<io2>[,...,<io8>]]
 
+       smp-alt-once    [IA-32,SMP] On a hotplug CPU system, only
+                       attempt to substitute SMP alternatives once at boot.
+
+       smsc-ircc2.nopnp        [HW] Don't use PNP to discover SMC devices
+       smsc-ircc2.ircc_cfg=    [HW] Device configuration I/O port
+       smsc-ircc2.ircc_sir=    [HW] SIR base I/O port
+       smsc-ircc2.ircc_fir=    [HW] FIR base I/O port
+       smsc-ircc2.ircc_irq=    [HW] IRQ line
+       smsc-ircc2.ircc_dma=    [HW] DMA channel
+       smsc-ircc2.ircc_transceiver= [HW] Transceiver type:
+                               0: Toshiba Satellite 1800 (GP data pin select)
+                               1: Fast pin select (default)
+                               2: ATC IRMode
+
        snd-ad1816a=    [HW,ALSA]
 
        snd-ad1848=     [HW,ALSA]
        snd-ad1816a=    [HW,ALSA]
 
        snd-ad1848=     [HW,ALSA]
@@ -1568,9 +1732,6 @@ running once the system is up.
 
        snd-ymfpci=     [HW,ALSA]
 
 
        snd-ymfpci=     [HW,ALSA]
 
-       sonicvibes=     [HW,OSS]
-                       Format: <reverb>
-
        sonycd535=      [HW,CD]
                        Format: <io>[,<irq>]
 
        sonycd535=      [HW,CD]
                        Format: <io>[,<irq>]
 
@@ -1607,6 +1768,22 @@ running once the system is up.
        stifb=          [HW]
                        Format: bpp:<bpp1>[:<bpp2>[:<bpp3>...]]
 
        stifb=          [HW]
                        Format: bpp:<bpp1>[:<bpp2>[:<bpp3>...]]
 
+       sunrpc.pool_mode=
+                       [NFS]
+                       Control how the NFS server code allocates CPUs to
+                       service thread pools.  Depending on how many NICs
+                       you have and where their interrupts are bound, this
+                       option will affect which CPUs will do NFS serving.
+                       Note: this parameter cannot be changed while the
+                       NFS server is running.
+
+                       auto        the server chooses an appropriate mode
+                                   automatically using heuristics
+                       global      a single global pool contains all CPUs
+                       percpu      one pool for each CPU
+                       pernode     one pool for each NUMA node (equivalent
+                                   to global on non-NUMA machines)
+
        swiotlb=        [IA-64] Number of I/O TLB slabs
 
        switches=       [HW,M68k]
        swiotlb=        [IA-64] Number of I/O TLB slabs
 
        switches=       [HW,M68k]
@@ -1614,6 +1791,12 @@ running once the system is up.
        sym53c416=      [HW,SCSI]
                        See header of drivers/scsi/sym53c416.c.
 
        sym53c416=      [HW,SCSI]
                        See header of drivers/scsi/sym53c416.c.
 
+       sysrq_always_enabled
+                       [KNL]
+                       Ignore sysrq setting - this boot parameter will
+                       neutralize any effect of /proc/sys/kernel/sysrq.
+                       Useful for debugging.
+
        t128=           [HW,SCSI]
                        See header of drivers/scsi/t128.c.
 
        t128=           [HW,SCSI]
                        See header of drivers/scsi/t128.c.
 
@@ -1666,10 +1849,26 @@ running once the system is up.
        uart6850=       [HW,OSS]
                        Format: <io>,<irq>
 
        uart6850=       [HW,OSS]
                        Format: <io>,<irq>
 
+       uhci-hcd.ignore_oc=
+                       [USB] Ignore overcurrent events (default N).
+                       Some badly-designed motherboards generate lots of
+                       bogus events, for ports that aren't wired to
+                       anything.  Set this parameter to avoid log spamming.
+                       Note that genuine overcurrent events won't be
+                       reported either.
+
+       usbcore.autosuspend=
+                       [USB] The autosuspend time delay (in seconds) used
+                       for newly-detected USB devices (default 2).  This
+                       is the time required before an idle device will be
+                       autosuspended.  Devices for which the delay is set
+                       to a negative value won't be autosuspended at all.
+
        usbhid.mousepoll=
                        [USBHID] The interval which mice are to be polled at.
 
        usbhid.mousepoll=
                        [USBHID] The interval which mice are to be polled at.
 
-       vdso=           [IA-32]
+       vdso=           [IA-32,SH]
+                       vdso=2: enable compat VDSO (default with COMPAT_VDSO)
                        vdso=1: enable VDSO (default)
                        vdso=0: disable VDSO mapping
 
                        vdso=1: enable VDSO (default)
                        vdso=0: disable VDSO mapping
 
@@ -1689,9 +1888,14 @@ running once the system is up.
                        decrease the size and leave more room for directly
                        mapped kernel RAM.
 
                        decrease the size and leave more room for directly
                        mapped kernel RAM.
 
-       vmhalt=         [KNL,S390]
+       vmhalt=         [KNL,S390] Perform z/VM CP command after system halt.
+                       Format: <command>
+
+       vmpanic=        [KNL,S390] Perform z/VM CP command after kernel panic.
+                       Format: <command>
 
 
-       vmpoff=         [KNL,S390]
+       vmpoff=         [KNL,S390] Perform z/VM CP command after power off.
+                       Format: <command>
 
        waveartist=     [HW,OSS]
                        Format: <io>,<irq>,<dma>,<dma2>
 
        waveartist=     [HW,OSS]
                        Format: <io>,<irq>,<dma>,<dma2>
@@ -1715,6 +1919,9 @@ running once the system is up.
        norandmaps      Don't use address space randomization
                        Equivalent to echo 0 > /proc/sys/kernel/randomize_va_space
 
        norandmaps      Don't use address space randomization
                        Equivalent to echo 0 > /proc/sys/kernel/randomize_va_space
 
+       unwind_debug=N  N > 0 will enable dwarf2 unwinder debugging
+                       This is useful to get more information why
+                       you got a "dwarf2 unwinder stuck"
 
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