ACPI: Add expand acpi.debug_layer in kernel-parameters.txt

Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 1150444a21ab64140f13e706797f16664e28244f..44d1bd142edf83fdf7c83ee509c44c0b6b20a136 100644 (file)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -217,20 +217,39 @@ and is between 256 and 4096 characters. It is defined in the file
        acpi.debug_level=       [HW,ACPI]
                        Format: <int>
                        Each bit of the <int> indicates an ACPI debug level,
-                       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_level.
-                       CONFIG_ACPI_DEBUG must be enabled for this to produce any output.
-                       Available bits (add the numbers together) to enable different
-                       debug output levels of the ACPI subsystem:
-                       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.
+                       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.
 
        acpi_pm_good    [X86-32,X86-64]
                        Override the pmtimer bug detection: force the kernel