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1.```TRACEPOINT_PROBE(random, urandom_read)```: Instrument the kernel tracepoint ```random:urandom_read```. These have a stable API, and thus are recommend to use instead of kprobes, wherever possible. You can run ```perf list``` for a list of tracepoints.
1.```TRACEPOINT_PROBE(random, urandom_read)```: Instrument the kernel tracepoint ```random:urandom_read```. These have a stable API, and thus are recommend to use instead of kprobes, wherever possible. You can run ```perf list``` for a list of tracepoints. Linux >= 4.7 is required to attach BPF programs to tracepoints.
1.```args->got_bits```: ```args``` is auto-populated to be a structure of the tracepoint arguments. The comment above says where you can see that structure. Eg: