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authorLen Brown <len.brown@intel.com>2008-10-22 23:19:50 -0400
committerLen Brown <len.brown@intel.com>2008-10-22 23:19:50 -0400
commit955ba395616a78780e70dc3f3b0b56ca4db52e5c (patch)
treef5978cfdc2b5ede82445de6675301a0171e66ea0 /Documentation
parentaa58329fc8ec50b379388fcad55f62c3493730d3 (diff)
parent383d7a11c9989205db44c7f1be339e5097062f03 (diff)
downloadlinux-linaro-955ba395616a78780e70dc3f3b0b56ca4db52e5c.tar.gz
Merge branch 'bugfixes' into test
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/kernel-parameters.txt55
1 files changed, 41 insertions, 14 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 1150444a21a..99cf83fd694 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -217,20 +217,47 @@ 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.power_nocheck= [HW,ACPI]
+ Format: 1/0 enable/disable the check of power state.
+ On some bogus BIOS the _PSC object/_STA object of
+ power resource can't return the correct device power
+ state. In such case it is unneccessary to check its
+ power state again in power transition.
+ 1 : disable the power state check
acpi_pm_good [X86-32,X86-64]
Override the pmtimer bug detection: force the kernel