Merge git://oss.sgi.com:8090/xfs/xfs-2.6

[linux-drm-fsl-dcu.git] / Documentation / kernel-parameters.txt

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 2e1898e4e8fd38e67ac9913480178454b094355e..d25acd51e18105aca3f3d0811d37f39aa8d3119c 100644 (file)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -548,6 +548,13 @@ and is between 256 and 4096 characters. It is defined in the file
        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.
 
@@ -599,8 +606,6 @@ and is between 256 and 4096 characters. It is defined in the file
 
        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.dumbkbd   [HW] Pretend that controller can only read data from
                             keyboard and cannot control its state
@@ -650,6 +655,10 @@ and is between 256 and 4096 characters. It is defined in the file
        idle=           [HW]
                        Format: idle=poll or idle=halt
 
+       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.
 
@@ -714,7 +723,12 @@ and is between 256 and 4096 characters. It is defined in the file
                        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
@@ -1012,6 +1026,10 @@ and is between 256 and 4096 characters. It is defined in the file
                        emulation library even if a 387 maths coprocessor
                        is present.
 
+       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
@@ -1052,9 +1070,14 @@ and is between 256 and 4096 characters. It is defined in the file
                        in certain environments such as networked servers or
                        real-time systems.
 
+       noirqbalance    [IA-32,SMP,KNL] Disable kernel irq balancing
+
        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
@@ -1285,6 +1308,7 @@ and is between 256 and 4096 characters. It is defined in the file
                        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
@@ -1366,6 +1390,14 @@ and is between 256 and 4096 characters. It is defined in the file
        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
 
@@ -1626,6 +1658,12 @@ and is between 256 and 4096 characters. It is defined in the file
        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.
 
@@ -1678,6 +1716,14 @@ and is between 256 and 4096 characters. It is defined in the file
        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.
+
        usbhid.mousepoll=
                        [USBHID] The interval which mice are to be polled at.
 
@@ -1732,6 +1778,9 @@ and is between 256 and 4096 characters. It is defined in the file
        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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