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CONFIG_FUNCTION_GRAPH_TRACER: Kernel Function Graph Tracer

General informations

The Linux kernel configuration item CONFIG_FUNCTION_GRAPH_TRACER:

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Enable the kernel to trace a function at both its return and its entry. Its first purpose is to trace the duration of functions and draw a call graph for each thread with some information like the return value. This is done by setting the current return address on the current task structure into a stack of calls.



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