Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6

[mirror_ubuntu-bionic-kernel.git] / Documentation / kernel-parameters.txt

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 38d7db3262c7e85f7e9d327f4ed2a30eee47ba1c..5d0283cd3a81997fde0eaf901417ac0de33bf16b 100644 (file)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -170,7 +170,10 @@ and is between 256 and 4096 characters. It is defined in the file
        acpi_os_name=   [HW,ACPI] Tell ACPI BIOS the name of the OS
                        Format: To spoof as Windows 98: ="Microsoft Windows"
 
        acpi_os_name=   [HW,ACPI] Tell ACPI BIOS the name of the OS
                        Format: To spoof as Windows 98: ="Microsoft Windows"
 

-       acpi_osi=       [HW,ACPI] empty param disables _OSI
+       acpi_osi=       [HW,ACPI] Modify list of supported OS interface strings
+                       acpi_osi="string1"      # add string1 -- only one string
+                       acpi_osi="!string2"     # remove built-in string2
+                       acpi_osi=               # disable all strings

 
        acpi_serialize  [HW,ACPI] force serialization of AML methods
 
 
        acpi_serialize  [HW,ACPI] force serialization of AML methods
 


@@ -396,6 +399,26 @@ and is between 256 and 4096 characters. It is defined in the file
                        clocksource is not available, it defaults to PIT.
                        Format: { pit | tsc | cyclone | pmtmr }
 
                        clocksource is not available, it defaults to PIT.
                        Format: { pit | tsc | cyclone | pmtmr }
 

+       clocksource=    [GENERIC_TIME] Override the default clocksource
+                       Format: <string>
+                       Override the default clocksource and use the clocksource
+                       with the name specified.
+                       Some clocksource names to choose from, depending on
+                       the platform:
+                       [all] jiffies (this is the base, fallback clocksource)
+                       [ACPI] acpi_pm
+                       [ARM] imx_timer1,OSTS,netx_timer,mpu_timer2,
+                               pxa_timer,timer3,32k_counter,timer0_1
+                       [AVR32] avr32
+                       [IA-32] pit,hpet,tsc,vmi-timer;
+                               scx200_hrt on Geode; cyclone on IBM x440
+                       [MIPS] MIPS
+                       [PARISC] cr16
+                       [S390] tod
+                       [SH] SuperH
+                       [SPARC64] tick
+                       [X86-64] hpet,tsc
+

        code_bytes      [IA32] How many bytes of object code to print in an
                        oops report.
                        Range: 0 - 8192
        code_bytes      [IA32] How many bytes of object code to print in an
                        oops report.
                        Range: 0 - 8192


@@ -496,6 +519,30 @@ and is between 256 and 4096 characters. It is defined in the file
                        Format: <area>[,<node>]
                        See also Documentation/networking/decnet.txt.
 
                        Format: <area>[,<node>]
                        See also Documentation/networking/decnet.txt.
 

+       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.
 


@@ -730,14 +777,6 @@ and is between 256 and 4096 characters. It is defined in the file
        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


@@ -816,6 +855,11 @@ and is between 256 and 4096 characters. It is defined in the file
        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.
 


@@ -1091,9 +1135,9 @@ and is between 256 and 4096 characters. It is defined in the file
                        when set.
                        Format: <int>
 
                        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.
+       noaliencache    [MM, NUMA, SLAB] Disables the allocation of alien
+                       caches in the slab allocator.  Saves per-node memory,
+                       but will impact performance.

 
        noalign         [KNL,ARM]
 
 
        noalign         [KNL,ARM]
 


@@ -1572,12 +1616,54 @@ and is between 256 and 4096 characters. It is defined in the file
 
        slram=          [HW,MTD]
 
 
        slram=          [HW,MTD]
 

+       slub_debug      [MM, SLUB]
+                       Enabling slub_debug allows one to determine the culprit
+                       if slab objects become corrupted. Enabling slub_debug
+                       creates guard zones around objects and poisons objects
+                       when not in use. Also tracks the last alloc / free.
+                       For more information see Documentation/vm/slub.txt.
+
+       slub_max_order= [MM, SLUB]
+                       Determines the maximum allowed order for slabs. Setting
+                       this too high may cause fragmentation.
+                       For more information see Documentation/vm/slub.txt.
+
+       slub_min_objects=       [MM, SLUB]
+                       The minimum objects per slab. SLUB will increase the
+                       slab order up to slub_max_order to generate a
+                       sufficiently big slab to satisfy the number of objects.
+                       The higher the number of objects the smaller the overhead
+                       of tracking slabs.
+                       For more information see Documentation/vm/slub.txt.
+
+       slub_min_order= [MM, SLUB]
+                       Determines the mininum page order for slabs. Must be
+                       lower than slub_max_order
+                       For more information see Documentation/vm/slub.txt.
+
+       slub_nomerge    [MM, SLUB]
+                       Disable merging of slabs of similar size. May be
+                       necessary if there is some reason to distinguish
+                       allocs to different slabs.
+                       For more information see Documentation/vm/slub.txt.
+

        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.
 
        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]


@@ -1775,10 +1861,6 @@ and is between 256 and 4096 characters. It is defined in the file
 
        time            Show timing data prefixed to each printk message line
 
 
        time            Show timing data prefixed to each printk message line
 

-       clocksource=    [GENERIC_TIME] Override the default clocksource
-                       Override the default clocksource and use the clocksource
-                       with the name specified.
-

        tipar.timeout=  [HW,PPT]
                        Set communications timeout in tenths of a second
                        (default 15).
        tipar.timeout=  [HW,PPT]
                        Set communications timeout in tenths of a second
                        (default 15).