On Mon, 18 Oct 2021, 04:46 Dongliang Mu, <mudongliangabcd@xxxxxxxxx> wrote:
Hi all,
I am writing to kindly ask one question: is there any tracing
mechanism in Linux kernel that can trace all the executed instructions
of a user process? If this user process is run on different
processors, traces of this process on different processors should be
also recorded.
You've not explained in detail what is the purpose of the tracing that you want to do. Missing this information I can only provide you a list of links to various tools and methods. Take a look by yourself and try to figure out what is better suited for your needs...
trace-cmd: https://trace-cmd.org
perf ftrace: <Linux source>/tools/perf/Documentation/perf-trace.txt
perf-tools: https://github.com/brendangregg/perf-tools
In particular, the "function_graph" tracer of ftrace seems to be suited for your purposes:
Obviously, gdb (and friends) is still invaluable (but it may be difficult to use, depending on your knowledge and experience, so use it if you really know that you need it):
Regards,
Fabio M. De Francesco
Any comment is welcome.
--
My best regards to you.
No System Is Safe!
Dongliang Mu
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