Merge branch 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[safe/jmp/linux-2.6] / Documentation / kernel-parameters.txt

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 4426e0b..8e91863 100644 (file)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -48,6 +48,7 @@ parameter is applicable:
        EFI     EFI Partitioning (GPT) is enabled
        EIDE    EIDE/ATAPI support is enabled.
        FB      The frame buffer device is enabled.
        EFI     EFI Partitioning (GPT) is enabled
        EIDE    EIDE/ATAPI support is enabled.
        FB      The frame buffer device is enabled.

+       GCOV    GCOV profiling is enabled.

        HW      Appropriate hardware is enabled.
        IA-64   IA-64 architecture is enabled.
        IMA     Integrity measurement architecture is enabled.
        HW      Appropriate hardware is enabled.
        IA-64   IA-64 architecture is enabled.
        IMA     Integrity measurement architecture is enabled.


@@ -228,14 +229,6 @@ and is between 256 and 4096 characters. It is defined in the file
                        to assume that this machine's pmtimer latches its value
                        and always returns good values.
 
                        to assume that this machine's pmtimer latches its value
                        and always returns good values.
 

-       acpi.power_nocheck=     [HW,ACPI]
-                       Format: 1/0 enable/disable the check of power state.
-                       On some bogus BIOS the _PSC object/_STA object of
-                       power resource can't return the correct device power
-                       state. In such case it is unneccessary to check its
-                       power state again in power transition.
-                       1 : disable the power state check
-

        acpi_sci=       [HW,ACPI] ACPI System Control Interrupt trigger mode
                        Format: { level | edge | high | low }
 
        acpi_sci=       [HW,ACPI] ACPI System Control Interrupt trigger mode
                        Format: { level | edge | high | low }
 


@@ -546,6 +539,10 @@ and is between 256 and 4096 characters. It is defined in the file
                        console=brl,ttyS0
                For now, only VisioBraille is supported.
 
                        console=brl,ttyS0
                For now, only VisioBraille is supported.
 

+       consoleblank=   [KNL] The console blank (screen saver) timeout in
+                       seconds. Defaults to 10*60 = 10mins. A value of 0
+                       disables the blank timer.
+

        coredump_filter=
                        [KNL] Change the default value for
                        /proc/<pid>/coredump_filter.
        coredump_filter=
                        [KNL] Change the default value for
                        /proc/<pid>/coredump_filter.


@@ -792,6 +789,12 @@ and is between 256 and 4096 characters. It is defined in the file
                        Format: off | on
                        default: on
 
                        Format: off | on
                        default: on
 

+       gcov_persist=   [GCOV] When non-zero (default), profiling data for
+                       kernel modules is saved and remains accessible via
+                       debugfs, even when the module is unloaded/reloaded.
+                       When zero, profiling data is discarded and associated
+                       debugfs files are removed at module unload time.
+

        gdth=           [HW,SCSI]
                        See header of drivers/scsi/gdth.c.
 
        gdth=           [HW,SCSI]
                        See header of drivers/scsi/gdth.c.
 


@@ -995,6 +998,7 @@ and is between 256 and 4096 characters. It is defined in the file
                nomerge
                forcesac
                soft
                nomerge
                forcesac
                soft

+               pt      [x86, IA64]

 
        io7=            [HW] IO7 for Marvel based alpha systems
                        See comment before marvel_specify_io7 in
 
        io7=            [HW] IO7 for Marvel based alpha systems
                        See comment before marvel_specify_io7 in


@@ -1111,6 +1115,10 @@ and is between 256 and 4096 characters. It is defined in the file
                        libata.dma=4      Compact Flash DMA only 
                        Combinations also work, so libata.dma=3 enables DMA
                        for disks and CDROMs, but not CFs.
                        libata.dma=4      Compact Flash DMA only 
                        Combinations also work, so libata.dma=3 enables DMA
                        for disks and CDROMs, but not CFs.

+       
+       libata.ignore_hpa=      [LIBATA] Ignore HPA limit
+                       libata.ignore_hpa=0       keep BIOS limits (default)
+                       libata.ignore_hpa=1       ignore limits, using full disk

 
        libata.noacpi   [LIBATA] Disables use of ACPI in libata suspend/resume
                        when set.
 
        libata.noacpi   [LIBATA] Disables use of ACPI in libata suspend/resume
                        when set.


@@ -1420,6 +1428,16 @@ and is between 256 and 4096 characters. It is defined in the file
        mtdparts=       [MTD]
                        See drivers/mtd/cmdlinepart.c.
 
        mtdparts=       [MTD]
                        See drivers/mtd/cmdlinepart.c.
 

+       onenand.bdry=   [HW,MTD] Flex-OneNAND Boundary Configuration
+
+                       Format: [die0_boundary][,die0_lock][,die1_boundary][,die1_lock]
+
+                       boundary - index of last SLC block on Flex-OneNAND.
+                                  The remaining blocks are configured as MLC blocks.
+                       lock     - Configure if Flex-OneNAND boundary should be locked.
+                                  Once locked, the boundary cannot be changed.
+                                  1 indicates lock status, 0 indicates unlock status.
+

        mtdset=         [ARM]
                        ARM/S3C2412 JIVE boot control
 
        mtdset=         [ARM]
                        ARM/S3C2412 JIVE boot control
 


@@ -1706,8 +1724,8 @@ and is between 256 and 4096 characters. It is defined in the file
        oprofile.cpu_type=      Force an oprofile cpu type
                        This might be useful if you have an older oprofile
                        userland or if you want common events.
        oprofile.cpu_type=      Force an oprofile cpu type
                        This might be useful if you have an older oprofile
                        userland or if you want common events.

-                       Format: { archperfmon }
-                       archperfmon: [X86] Force use of architectural
+                       Format: { arch_perfmon }
+                       arch_perfmon: [X86] Force use of architectural

                                perfmon on Intel CPUs instead of the
                                CPU specific event set.
 
                                perfmon on Intel CPUs instead of the
                                CPU specific event set.
 


@@ -1786,6 +1804,9 @@ and is between 256 and 4096 characters. It is defined in the file
                                root domains (aka PCI segments, in ACPI-speak).
                nommconf        [X86] Disable use of MMCONFIG for PCI
                                Configuration
                                root domains (aka PCI segments, in ACPI-speak).
                nommconf        [X86] Disable use of MMCONFIG for PCI
                                Configuration

+               check_enable_amd_mmconf [X86] check for and enable
+                               properly configured MMIO access to PCI
+                               config space on AMD family 10h CPU

                nomsi           [MSI] If the PCI_MSI kernel config parameter is
                                enabled, this kernel boot option can be used to
                                disable the use of MSI interrupts system-wide.
                nomsi           [MSI] If the PCI_MSI kernel config parameter is
                                enabled, this kernel boot option can be used to
                                disable the use of MSI interrupts system-wide.


@@ -1875,6 +1896,12 @@ and is between 256 and 4096 characters. It is defined in the file
                                PAGE_SIZE is used as alignment.
                                PCI-PCI bridge can be specified, if resource
                                windows need to be expanded.
                                PAGE_SIZE is used as alignment.
                                PCI-PCI bridge can be specified, if resource
                                windows need to be expanded.

+               ecrc=           Enable/disable PCIe ECRC (transaction layer
+                               end-to-end CRC checking).
+                               bios: Use BIOS/firmware settings. This is the
+                               the default.
+                               off: Turn ECRC off
+                               on: Turn ECRC on.

 
        pcie_aspm=      [PCIE] Forcibly enable or disable PCIe Active State Power
                        Management.
 
        pcie_aspm=      [PCIE] Forcibly enable or disable PCIe Active State Power
                        Management.


@@ -1892,6 +1919,12 @@ and is between 256 and 4096 characters. It is defined in the file
                        Format: { 0 | 1 }
                        See arch/parisc/kernel/pdc_chassis.c
 
                        Format: { 0 | 1 }
                        See arch/parisc/kernel/pdc_chassis.c
 

+       percpu_alloc=   [X86] Select which percpu first chunk allocator to use.
+                       Allowed values are one of "lpage", "embed" and "4k".
+                       See comments in arch/x86/kernel/setup_percpu.c for
+                       details on each allocator.  This parameter is primarily
+                       for debugging and performance comparison.
+

        pf.             [PARIDE]
                        See Documentation/blockdev/paride.txt.
 
        pf.             [PARIDE]
                        See Documentation/blockdev/paride.txt.
 


@@ -2444,7 +2477,13 @@ and is between 256 and 4096 characters. It is defined in the file
 
        tp720=          [HW,PS2]
 
 
        tp720=          [HW,PS2]
 

-       trace_buf_size=nn[KMG] [ftrace] will set tracing buffer size.
+       trace_buf_size=nn[KMG]
+                       [FTRACE] will set tracing buffer size.
+
+       trace_event=[event-list]
+                       [FTRACE] Set and start specified trace events in order
+                       to facilitate early boot debugging.
+                       See also Documentation/trace/events.txt

 
        trix=           [HW,OSS] MediaTrix AudioTrix Pro
                        Format:
 
        trix=           [HW,OSS] MediaTrix AudioTrix Pro
                        Format: