libata: don't whine if ->prereset() returns -ENOENT

[powerpc.git] / Documentation / kernel-parameters.txt

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index ce1f2c8..856c8b1 100644 (file)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -48,6 +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.


@@ -78,6 +79,7 @@ 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.


@@ -124,7 +126,8 @@ and is between 256 and 4096 characters. It is defined in the file
                        See header of drivers/scsi/53c7xx.c.
                        See also Documentation/scsi/ncr53c7xx.txt.
 
                        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


@@ -484,7 +487,7 @@ and is between 256 and 4096 characters. It is defined in the file
 
        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]]
 


@@ -863,7 +866,14 @@ and is between 256 and 4096 characters. It is defined in the file
                        Format: <1-256>
 
        maxcpus=        [SMP] Maximum number of processors that an SMP kernel
                        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.


@@ -1038,6 +1048,10 @@ and is between 256 and 4096 characters. It is defined in the file
                        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.
        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.


@@ -1673,6 +1687,22 @@ and is between 256 and 4096 characters. It is defined in the file
        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]


@@ -1746,10 +1776,17 @@ and is between 256 and 4096 characters. It is defined in the file
                        Note that genuine overcurrent events won't be
                        reported either.
 
                        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 0 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=1: enable VDSO (default)
                        vdso=0: disable VDSO mapping
 
                        vdso=1: enable VDSO (default)
                        vdso=0: disable VDSO mapping