xfs: remove nr_to_write writeback windup.

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

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index ca575f7..1808f11 100644 (file)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -58,6 +58,7 @@ 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.

+       KGDB    Kernel debugger support is enabled.

        KVM     Kernel Virtual Machine support is enabled.
        LIBATA  Libata driver is enabled
        LP      Printer support is enabled.
        KVM     Kernel Virtual Machine support is enabled.
        LIBATA  Libata driver is enabled
        LP      Printer support is enabled.


@@ -99,6 +100,7 @@ parameter is applicable:
        SWSUSP  Software suspend (hibernation) is enabled.
        SUSPEND System suspend states are enabled.
        FTRACE  Function tracing enabled.
        SWSUSP  Software suspend (hibernation) is enabled.
        SUSPEND System suspend states are enabled.
        FTRACE  Function tracing enabled.

+       TPM     TPM drivers are enabled.

        TS      Appropriate touchscreen support is enabled.
        UMS     USB Mass Storage support is enabled.
        USB     USB support is enabled.
        TS      Appropriate touchscreen support is enabled.
        UMS     USB Mass Storage support is enabled.
        USB     USB support is enabled.


@@ -150,6 +152,7 @@ and is between 256 and 4096 characters. It is defined in the file
                        strict -- Be less tolerant of platforms that are not
                                strictly ACPI specification compliant.
                        rsdt -- prefer RSDT over (default) XSDT
                        strict -- Be less tolerant of platforms that are not
                                strictly ACPI specification compliant.
                        rsdt -- prefer RSDT over (default) XSDT

+                       copy_dsdt -- copy DSDT to memory

 
                        See also Documentation/power/pm.txt, pci=noacpi
 
 
                        See also Documentation/power/pm.txt, pci=noacpi
 


@@ -286,9 +289,6 @@ and is between 256 and 4096 characters. It is defined in the file
        advansys=       [HW,SCSI]
                        See header of drivers/scsi/advansys.c.
 
        advansys=       [HW,SCSI]
                        See header of drivers/scsi/advansys.c.
 

-       advwdt=         [HW,WDT] Advantech WDT
-                       Format: <iostart>,<iostop>
-

        aedsp16=        [HW,OSS] Audio Excel DSP 16
                        Format: <io>,<irq>,<dma>,<mss_io>,<mpu_io>,<mpu_irq>
                        See also header of sound/oss/aedsp16.c.
        aedsp16=        [HW,OSS] Audio Excel DSP 16
                        Format: <io>,<irq>,<dma>,<mss_io>,<mpu_io>,<mpu_irq>
                        See also header of sound/oss/aedsp16.c.


@@ -323,6 +323,8 @@ and is between 256 and 4096 characters. It is defined in the file
                                    they are unmapped. Otherwise they are
                                    flushed before they will be reused, which
                                    is a lot of faster
                                    they are unmapped. Otherwise they are
                                    flushed before they will be reused, which
                                    is a lot of faster

+                       off       - do not initialize any AMD IOMMU found in
+                                   the system

 
        amijoy.map=     [HW,JOY] Amiga joystick support
                        Map of devices attached to JOY0DAT and JOY1DAT
 
        amijoy.map=     [HW,JOY] Amiga joystick support
                        Map of devices attached to JOY0DAT and JOY1DAT


@@ -707,6 +709,12 @@ and is between 256 and 4096 characters. It is defined in the file
                        The VGA output is eventually overwritten by the real
                        console.
 
                        The VGA output is eventually overwritten by the real
                        console.
 

+       ekgdboc=        [X86,KGDB] Allow early kernel console debugging
+                       ekgdboc=kbd
+
+                       This is desgined to be used in conjunction with
+                       the boot argument: earlyprintk=vga
+

        eata=           [HW,SCSI]
 
        edd=            [EDD]
        eata=           [HW,SCSI]
 
        edd=            [EDD]


@@ -757,9 +765,6 @@ and is between 256 and 4096 characters. It is defined in the file
                        This option is obsoleted by the "netdev=" option, which
                        has equivalent usage. See its documentation for details.
 
                        This option is obsoleted by the "netdev=" option, which
                        has equivalent usage. See its documentation for details.
 

-       eurwdt=         [HW,WDT] Eurotech CPU-1220/1410 onboard watchdog.
-                       Format: <io>[,<irq>]
-

        failslab=
        fail_page_alloc=
        fail_make_request=[KNL]
        failslab=
        fail_page_alloc=
        fail_make_request=[KNL]


@@ -787,8 +792,12 @@ and is between 256 and 4096 characters. It is defined in the file
                        as early as possible in order to facilitate early
                        boot debugging.
 
                        as early as possible in order to facilitate early
                        boot debugging.
 

-       ftrace_dump_on_oops
+       ftrace_dump_on_oops[=orig_cpu]

                        [FTRACE] will dump the trace buffers on oops.
                        [FTRACE] will dump the trace buffers on oops.

+                       If no parameter is passed, ftrace will dump
+                       buffers of all CPUs, but if you pass orig_cpu, it will
+                       dump only the buffer of the CPU that triggered the
+                       oops.

 
        ftrace_filter=[function-list]
                        [FTRACE] Limit the functions traced by the function
 
        ftrace_filter=[function-list]
                        [FTRACE] Limit the functions traced by the function


@@ -1120,10 +1129,26 @@ and is between 256 and 4096 characters. It is defined in the file
                        use the HighMem zone if it exists, and the Normal
                        zone if it does not.
 
                        use the HighMem zone if it exists, and the Normal
                        zone if it does not.
 

-       kgdboc=         [HW] kgdb over consoles.
-                       Requires a tty driver that supports console polling.
-                       (only serial supported for now)
-                       Format: <serial_device>[,baud]
+       kgdbdbgp=       [KGDB,HW] kgdb over EHCI usb debug port.
+                       Format: <Controller#>[,poll interval]
+                       The controller # is the number of the ehci usb debug
+                       port as it is probed via PCI.  The poll interval is
+                       optional and is the number seconds in between
+                       each poll cycle to the debug port in case you need
+                       the functionality for interrupting the kernel with
+                       gdb or control-c on the dbgp connection.  When
+                       not using this parameter you use sysrq-g to break into
+                       the kernel debugger.
+
+       kgdboc=         [KGDB,HW] kgdb over consoles.
+                       Requires a tty driver that supports console polling,
+                       or a supported polling keyboard driver (non-usb).
+                       Serial only format: <serial_device>[,baud]
+                       keyboard only format: kbd
+                       keyboard and serial format: kbd,<serial_device>[,baud]
+
+       kgdbwait        [KGDB] Stop kernel execution and enter the
+                       kernel debugger at the earliest opportunity.

 
        kmac=           [MIPS] korina ethernet MAC address.
                        Configure the RouterBoard 532 series on-chip
 
        kmac=           [MIPS] korina ethernet MAC address.
                        Configure the RouterBoard 532 series on-chip


@@ -1235,6 +1260,8 @@ and is between 256 and 4096 characters. It is defined in the file
                        * nohrst, nosrst, norst: suppress hard, soft
                           and both resets.
 
                        * nohrst, nosrst, norst: suppress hard, soft
                           and both resets.
 

+                       * dump_id: dump IDENTIFY data.
+

                        If there are multiple matching configurations changing
                        the same attribute, the last one is used.
 
                        If there are multiple matching configurations changing
                        the same attribute, the last one is used.
 


@@ -2244,9 +2271,6 @@ and is between 256 and 4096 characters. It is defined in the file
 
        sched_debug     [KNL] Enables verbose scheduler debug messages.
 
 
        sched_debug     [KNL] Enables verbose scheduler debug messages.
 

-       sc1200wdt=      [HW,WDT] SC1200 WDT (watchdog) driver
-                       Format: <io>[,<timeout>[,<isapnp>]]
-

        scsi_debug_*=   [SCSI]
                        See drivers/scsi/scsi_debug.c.
 
        scsi_debug_*=   [SCSI]
                        See drivers/scsi/scsi_debug.c.
 


@@ -2618,6 +2642,15 @@ and is between 256 and 4096 characters. It is defined in the file
 
        tp720=          [HW,PS2]
 
 
        tp720=          [HW,PS2]
 

+       tpm_suspend_pcr=[HW,TPM]
+                       Format: integer pcr id
+                       Specify that at suspend time, the tpm driver
+                       should extend the specified pcr with zeros,
+                       as a workaround for some chips which fail to
+                       flush the last written pcr on TPM_SaveState.
+                       This will guarantee that all the other pcrs
+                       are saved.
+

        trace_buf_size=nn[KMG]
                        [FTRACE] will set tracing buffer size.
 
        trace_buf_size=nn[KMG]
                        [FTRACE] will set tracing buffer size.
 


@@ -2826,8 +2859,10 @@ and is between 256 and 4096 characters. It is defined in the file
        wd7000=         [HW,SCSI]
                        See header of drivers/scsi/wd7000.c.
 
        wd7000=         [HW,SCSI]
                        See header of drivers/scsi/wd7000.c.
 

-       wdt=            [WDT] Watchdog
-                       See Documentation/watchdog/wdt.txt.
+       watchdog timers [HW,WDT] For information on watchdog timers,
+                       see Documentation/watchdog/watchdog-parameters.txt
+                       or other driver-specific files in the
+                       Documentation/watchdog/ directory.

 
        x2apic_phys     [X86-64,APIC] Use x2apic physical mode instead of
                        default x2apic cluster mode on platforms
 
        x2apic_phys     [X86-64,APIC] Use x2apic physical mode instead of
                        default x2apic cluster mode on platforms