1/sys/module/acpi/parameters/:
2
3trace_method_name
4	The AML method name that the user wants to trace
5
6trace_debug_layer
7	The temporary debug_layer used when tracing the method.
8	Using 0xffffffff by default if it is 0.
9
10trace_debug_level
11	The temporary debug_level used when tracing the method.
12	Using 0x00ffffff by default if it is 0.
13
14trace_state
15	The status of the tracing feature.
16
17	"enabled" means this feature is enabled
18	and the AML method is traced every time it's executed.
19
20	"1" means this feature is enabled and the AML method
21	will only be traced during the next execution.
22
23	"disabled" means this feature is disabled.
24	Users can enable/disable this debug tracing feature by
25	"echo string > /sys/module/acpi/parameters/trace_state".
26	"string" should be one of "enable", "disable" and "1".
27