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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 /drivers/acpi | |
| parent | a25ee9200eef07377e1703697afbb5d81f89e500 (diff) | |
| download | blackbird-op-linux-c637e4861c7db8165d0f438db3829e7878c96059.tar.gz blackbird-op-linux-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 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/acpica/acglobal.h | 2 | ||||
| -rw-r--r-- | drivers/acpi/debugfs.c | 8 |
2 files changed, 9 insertions, 1 deletions
diff --git a/drivers/acpi/acpica/acglobal.h b/drivers/acpi/acpica/acglobal.h index 899d68afc3c5..92122292ef1f 100644 --- a/drivers/acpi/acpica/acglobal.h +++ b/drivers/acpi/acpica/acglobal.h @@ -115,7 +115,7 @@ u8 ACPI_INIT_GLOBAL(acpi_gbl_use_default_register_widths, TRUE); /* * Optionally enable output from the AML Debug Object. */ -u8 ACPI_INIT_GLOBAL(acpi_gbl_enable_aml_debug_object, FALSE); +u32 ACPI_INIT_GLOBAL(acpi_gbl_enable_aml_debug_object, FALSE); /* * Optionally copy the entire DSDT to local memory (instead of simply diff --git a/drivers/acpi/debugfs.c b/drivers/acpi/debugfs.c index abfcf9f6e766..7de27d49c4b9 100644 --- a/drivers/acpi/debugfs.c +++ b/drivers/acpi/debugfs.c @@ -12,6 +12,14 @@ #define _COMPONENT ACPI_SYSTEM_COMPONENT ACPI_MODULE_NAME("debugfs"); + +/* /sys/modules/acpi/parameters/aml_debug_output */ + +module_param_named(aml_debug_output, acpi_gbl_enable_aml_debug_object, + bool, 0644); +MODULE_PARM_DESC(aml_debug_output, + "To enable/disable the ACPI Debug Object output."); + /* /sys/kernel/debug/acpi/custom_method */ static ssize_t cm_write(struct file *file, const char __user * user_buf, |
