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| author |   Masami Hiramatsu (Google) <mhiramat@kernel.org> | 2023-06-06 21:39:56 +0900 |
|---|---|---|
| committer | Masami Hiramatsu (Google) <mhiramat@kernel.org> | 2023-06-06 21:39:56 +0900 |
| commit | fd26290ec89d4eae8570e027df3b8c519d285fd0 (patch) | |
| tree | e76aefcd386e9270c620ff48c3c2b8676e3452db /tools/testing/selftests/ftrace/test.d | |
| parent | tracing/probes: Add $arg* meta argument for all function args (diff) | |
| download | wireguard-linux-fd26290ec89d4eae8570e027df3b8c519d285fd0.tar.xz wireguard-linux-fd26290ec89d4eae8570e027df3b8c519d285fd0.zip | |
tracing/probes: Add BTF retval type support
Check the target function has non-void retval type and set the correct
fetch type if user doesn't specify it.
If the function returns void, $retval is rejected as below;
# echo 'f unregister_kprobes%return $retval' >> dynamic_events
sh: write error: No such file or directory
# cat error_log
[ 37.488397] trace_fprobe: error: This function returns 'void' type
Command: f unregister_kprobes%return $retval
^
Link: https://lore.kernel.org/all/168507476195.913472.16290308831790216609.stgit@mhiramat.roam.corp.google.com/
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Diffstat (limited to 'tools/testing/selftests/ftrace/test.d')
0 files changed, 0 insertions, 0 deletions