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ftrace

ftrace = Function Tracer

ftrace uses the debugfs filesystem to hold the control files as well as the files to display output.

Common uses

Event tracing

Prerequisites

CONFIG_DYNAMIC_FTRACE, CONFIG_TRACE_IRQFLAGS_SUPPORT

See also

Documentation/trace/ftrace.txt, kernel/trace

Links

Debugging the kernel using Ftrace - part 1, Debugging the kernel using Ftrace - part 2