1 files changed, 47 insertions, 64 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index c86c07459712..9fa6508892c2 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -198,59 +198,42 @@ and is between 256 and 4096 characters. It is defined in the file
                         that require a timer override, but don't have
                         HPET
 
-        acpi.debug_layer=       [HW,ACPI]
+        acpi_backlight= [HW,ACPI]
+                        acpi_backlight=vendor
+                        acpi_backlight=video
+                        If set to vendor, prefer vendor specific driver
+                        (e.g. thinkpad_acpi, sony_acpi, etc.) instead
+                        of the ACPI video.ko driver.
+
+        acpi_display_output=    [HW,ACPI]
+                        acpi_display_output=vendor
+                        acpi_display_output=video
+                        See above.
+
+        acpi.debug_layer=       [HW,ACPI,ACPI_DEBUG]
+        acpi.debug_level=       [HW,ACPI,ACPI_DEBUG]
                         Format: <int>
-                        Each bit of the <int> indicates an ACPI debug layer,
-                        1: enable, 0: disable. It is useful for boot time
-                        debugging. After system has booted up, it can be set
-                        via /sys/module/acpi/parameters/debug_layer.
-                        CONFIG_ACPI_DEBUG must be enabled for this to produce any output.
-                        Available bits (add the numbers together) to enable debug output
-                        for specific parts of the ACPI subsystem:
-                        0x01 utilities 0x02 hardware 0x04 events 0x08 tables
-                        0x10 namespace 0x20 parser 0x40 dispatcher
-                        0x80 executer 0x100 resources 0x200 acpica debugger
-                        0x400 os services 0x800 acpica disassembler.
-                        The number can be in decimal or prefixed with 0x in hex.
-                        Warning: Many of these options can produce a lot of
-                        output and make your system unusable. Be very careful.
-
-        acpi.debug_level=       [HW,ACPI]
-                        Format: <int>
-                        Each bit of the <int> indicates an ACPI debug level,
-                        which corresponds to the level in an ACPI_DEBUG_PRINT
-                        statement.  After system has booted up, this mask
-                        can be set via /sys/module/acpi/parameters/debug_level.
-
-                        CONFIG_ACPI_DEBUG must be enabled for this to produce
-                        any output.  The number can be in decimal or prefixed
-                        with 0x in hex.  Some of these options produce so much
-                        output that the system is unusable.
-
-                        The following global components are defined by the
-                        ACPI CA:
-                               0x01 error
-                               0x02 warn
-                               0x04 init
-                               0x08 debug object
-                               0x10 info
-                               0x20 init names
-                               0x40 parse
-                               0x80 load
-                              0x100 dispatch
-                              0x200 execute
-                              0x400 names
-                              0x800 operation region
-                             0x1000 bfield
-                             0x2000 tables
-                             0x4000 values
-                             0x8000 objects
-                            0x10000 resources
-                            0x20000 user requests
-                            0x40000 package
-                        The number can be in decimal or prefixed with 0x in hex.
-                        Warning: Many of these options can produce a lot of
-                        output and make your system unusable. Be very careful.
+                        CONFIG_ACPI_DEBUG must be enabled to produce any ACPI
+                        debug output.  Bits in debug_layer correspond to a
+                        _COMPONENT in an ACPI source file, e.g.,
+                            #define _COMPONENT ACPI_PCI_COMPONENT
+                        Bits in debug_level correspond to a level in
+                        ACPI_DEBUG_PRINT statements, e.g.,
+                            ACPI_DEBUG_PRINT((ACPI_DB_INFO, ...
+                        See Documentation/acpi/debug.txt for more information
+                        about debug layers and levels.
+
+                        Enable AML "Debug" output, i.e., stores to the Debug
+                        object while interpreting AML:
+                            acpi.debug_layer=0xffffffff acpi.debug_level=0x2
+                        Enable PCI/PCI interrupt routing info messages:
+                            acpi.debug_layer=0x400000 acpi.debug_level=0x4
+                        Enable all messages related to ACPI hardware:
+                            acpi.debug_layer=0x2 acpi.debug_level=0xffffffff
+
+                        Some values produce so much output that the system is
+                        unusable.  The "log_buf_len" parameter may be useful
+                        if you need to capture more output.
 
         acpi.power_nocheck=     [HW,ACPI]
                         Format: 1/0 enable/disable the check of power state.
@@ -646,7 +629,7 @@ and is between 256 and 4096 characters. It is defined in the file
 
         digiepca=       [HW,SERIAL]
                         See drivers/char/README.epca and
-                        Documentation/digiepca.txt.
+                        Documentation/serial/digiepca.txt.
 
         disable_mtrr_cleanup [X86]
         enable_mtrr_cleanup [X86]
@@ -757,7 +740,7 @@ and is between 256 and 4096 characters. It is defined in the file
                         See header of drivers/scsi/fdomain.c.
 
         floppy=         [HW]
-                        See Documentation/floppy.txt.
+                        See Documentation/blockdev/floppy.txt.
 
         force_pal_cache_flush
                         [IA-64] Avoid check_sal_cache_flush which may hang on
@@ -1118,7 +1101,7 @@ and is between 256 and 4096 characters. It is defined in the file
                         the same attribute, the last one is used.
 
         load_ramdisk=   [RAM] List of ramdisks to load from floppy
-                        See Documentation/ramdisk.txt.
+                        See Documentation/blockdev/ramdisk.txt.
 
         lockd.nlm_grace_period=P  [NFS] Assign grace period.
                         Format: <integer>
@@ -1613,7 +1596,7 @@ and is between 256 and 4096 characters. It is defined in the file
 
         pcd.            [PARIDE]
                         See header of drivers/block/paride/pcd.c.
-                        See also Documentation/paride.txt.
+                        See also Documentation/blockdev/paride.txt.
 
         pci=option[,option...]  [PCI] various PCI subsystem options:
                 off             [X86] don't probe for the PCI bus
@@ -1714,7 +1697,7 @@ and is between 256 and 4096 characters. It is defined in the file
         pcmv=           [HW,PCMCIA] BadgePAD 4
 
         pd.             [PARIDE]
-                        See Documentation/paride.txt.
+                        See Documentation/blockdev/paride.txt.
 
         pdcchassis=     [PARISC,HW] Disable/Enable PDC Chassis Status codes at
                         boot time.
@@ -1722,10 +1705,10 @@ and is between 256 and 4096 characters. It is defined in the file
                         See arch/parisc/kernel/pdc_chassis.c
 
         pf.             [PARIDE]
-                        See Documentation/paride.txt.
+                        See Documentation/blockdev/paride.txt.
 
         pg.             [PARIDE]
-                        See Documentation/paride.txt.
+                        See Documentation/blockdev/paride.txt.
 
         pirq=           [SMP,APIC] Manual mp-table setup
                         See Documentation/x86/i386/IO-APIC.txt.
@@ -1795,7 +1778,7 @@ and is between 256 and 4096 characters. It is defined in the file
 
         prompt_ramdisk= [RAM] List of RAM disks to prompt for floppy disk
                         before loading.
-                        See Documentation/ramdisk.txt.
+                        See Documentation/blockdev/ramdisk.txt.
 
         psmouse.proto=  [HW,MOUSE] Highest PS2 mouse protocol extension to
                         probe for; one of (bare|imps|exps|lifebook|any).
@@ -1815,7 +1798,7 @@ and is between 256 and 4096 characters. It is defined in the file
                         <io>,<mss_io>,<mss_irq>,<mss_dma>,<mpu_io>,<mpu_irq>
 
         pt.             [PARIDE]
-                        See Documentation/paride.txt.
+                        See Documentation/blockdev/paride.txt.
 
         pty.legacy_count=
                         [KNL] Number of legacy pty's. Overwrites compiled-in
@@ -1829,10 +1812,10 @@ and is between 256 and 4096 characters. It is defined in the file
                         See Documentation/md.txt.
 
         ramdisk_blocksize=      [RAM]
-                        See Documentation/ramdisk.txt.
+                        See Documentation/blockdev/ramdisk.txt.
 
         ramdisk_size=   [RAM] Sizes of RAM disks in kilobytes
-                        See Documentation/ramdisk.txt.
+                        See Documentation/blockdev/ramdisk.txt.
 
         rcupdate.blimit=        [KNL,BOOT]
                         Set maximum number of finished RCU callbacks to process
@@ -2164,7 +2147,7 @@ and is between 256 and 4096 characters. It is defined in the file
                         See Documentation/sonypi.txt
 
         specialix=      [HW,SERIAL] Specialix multi-serial port adapter
-                        See Documentation/specialix.txt.
+                        See Documentation/serial/specialix.txt.
 
         spia_io_base=   [HW,MTD]
         spia_fio_base=