Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / Documentation / acpi / method-tracing.txt

diff --git a/kernel/Documentation/acpi/method-tracing.txt b/kernel/Documentation/acpi/method-tracing.txt
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+++ b/kernel/Documentation/acpi/method-tracing.txt
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+/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".