| /sys/module/acpi/parameters/: | 
 |  | 
 | trace_method_name | 
 | 	The AML method name that the user wants to trace | 
 |  | 
 | trace_debug_layer | 
 | 	The temporary debug_layer used when tracing the method. | 
 | 	Using 0xffffffff by default if it is 0. | 
 |  | 
 | trace_debug_level | 
 | 	The temporary debug_level used when tracing the method. | 
 | 	Using 0x00ffffff by default if it is 0. | 
 |  | 
 | trace_state | 
 | 	The status of the tracing feature. | 
 |  | 
 | 	"enabled" means this feature is enabled | 
 | 	and the AML method is traced every time it's executed. | 
 |  | 
 | 	"1" means this feature is enabled and the AML method | 
 | 	will only be traced during the next execution. | 
 |  | 
 | 	"disabled" means this feature is disabled. | 
 | 	Users can enable/disable this debug tracing feature by | 
 | 	"echo string > /sys/module/acpi/parameters/trace_state". | 
 | 	"string" should be one of "enable", "disable" and "1". |