The feature is about to eanble trace a individual AML method.
Created attachment 8226 [details]
a patch to enable aml method trace
against linus-git tree.
this patch should be using the new ACPICA hook acpi_debug_trace()
and should be using a sysfs interface instead of procfs.
Created attachment 12978 [details]
patch in comment #3 applied to acpi test branch
target is 2.6.25
shipped in Linux-2.6.24-git22