Brief differences between tracepoints, kprobes, uprobes and USDT

A diagram compares tracepoints, kprobes, uprobes and USDT(Userland Statically Defined Tracepoints):

	Static	Dynamic	Kernel Tracing	Userland Tracing
Tracepoints	✔		✔
Kprobes		✔	✔
Uprobes		✔		✔
USDT	✔			✔

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