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| author | Zhang Rui <rui.zhang@intel.com> | 2010-07-15 10:46:17 +0800 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2010-08-14 23:02:14 -0400 |
| commit | c637e4861c7db8165d0f438db3829e7878c96059 (patch) | |
| tree | 7cb2621815f1861d0e333cced6bf993f1b38c4e0 /Documentation | |
| parent | a25ee9200eef07377e1703697afbb5d81f89e500 (diff) | |
| download | linux-stable-c637e4861c7db8165d0f438db3829e7878c96059.tar.gz linux-stable-c637e4861c7db8165d0f438db3829e7878c96059.tar.bz2 linux-stable-c637e4861c7db8165d0f438db3829e7878c96059.zip | |
ACPI: introduce module parameter acpi.aml_debug_output
Introduce module parameter acpi.aml_debug_output.
With acpi.aml_debug_output set, we can get AML debug object output
(Store (AAA, Debug)), even with CONFIG_ACPI_DEBUG cleared.
Together with the runtime custom method mechanism,
we can debug AML code problems without rebuilding the kernel.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/acpi/method-customizing.txt | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/acpi/method-customizing.txt b/Documentation/acpi/method-customizing.txt index e628cd23ca80..3e1d25aee3fb 100644 --- a/Documentation/acpi/method-customizing.txt +++ b/Documentation/acpi/method-customizing.txt @@ -19,6 +19,8 @@ Note: Only ACPI METHOD can be overridden, any other object types like "Device", "OperationRegion", are not recognized. Note: The same ACPI control method can be overridden for many times, and it's always the latest one that used by Linux/kernel. +Note: To get the ACPI debug object output (Store (AAAA, Debug)), + please run "echo 1 > /sys/module/acpi/parameters/aml_debug_output". 1. override an existing method a) get the ACPI table via ACPI sysfs I/F. e.g. to get the DSDT, |