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CONFIG_FUNCTION_GRAPH_RETVAL: Kernel Function Graph Return Value

General informations

The Linux kernel configuration item CONFIG_FUNCTION_GRAPH_RETVAL:

Help text

Support recording and printing the function return value when using function graph tracer. It can be helpful to locate functions that return errors. This feature is off by default, and you can enable it via the trace option funcgraph-retval. See Documentation/trace/ftrace.rst



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