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Hi,
I am new to kernel tracing and have been comparing perf and bpftrace. I have two questions -
kprobes
thatbpftrace
andperf
mention are different. I don't understand how this can be, since I thought that these points were put in the kernel? (see screenshots)-bpf_map
functions for BPF programs attached to some event (e.g.,bpf_map_update_elem
which is called as part of a bpf program that I attached in the kernel for socket filtering). I'm not able to get any calls to such functions by usingbpftrace
-- any insights on how you would go about doing this would help a lot.Thanks!
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