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| author | Masami Hiramatsu <mhiramat@kernel.org> | 2022-03-15 17:02:00 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2022-03-18 06:16:58 +0300 |
| commit | 6ee64cc3020b5b5537827c71d8eaac814ad4d346 (patch) | |
| tree | 361bd8b1ce2bc869da84c12fd912ffae1905b7a8 /Documentation/trace/index.rst | |
| parent | 5b0ab78998e32564a011b14c4c7f9c81e2d42b9d (diff) | |
| download | linux-6ee64cc3020b5b5537827c71d8eaac814ad4d346.tar.xz | |
fprobe: Add sample program for fprobe
Add a sample program for the fprobe. The sample_fprobe puts a fprobe on
kernel_clone() by default. This dump stack and some called address info
at the function entry and exit.
The sample_fprobe.ko gets 2 parameters.
- symbol: you can specify the comma separated symbols or wildcard symbol
pattern (in this case you can not use comma)
- stackdump: a bool value to enable or disable stack dump in the fprobe
handler.
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Tested-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/164735291987.1084943.4449670993752806840.stgit@devnote2
Diffstat (limited to 'Documentation/trace/index.rst')
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