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.
+       LIBATA  Libata driver 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.
+       SH      SuperH architecture 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.
 
-       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
@@ -484,7 +487,7 @@ and is between 256 and 4096 characters. It is defined in the file
 
        dtc3181e=       [HW,SCSI]
 
-       earlyprintk=    [IA-32,X86-64]
+       earlyprintk=    [IA-32,X86-64,SH]
                        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
-                       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.
@@ -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.
 
+       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.
@@ -1673,6 +1687,22 @@ and is between 256 and 4096 characters. It is defined in the file
        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]
@@ -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.
 
+       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.
 
-       vdso=           [IA-32]
+       vdso=           [IA-32,SH]
                        vdso=1: enable VDSO (default)
                        vdso=0: disable VDSO mapping