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[ Upstream commit72d81e1062] The perf trace enum augmentation test specifically targets landlock_ add_rule syscall but IIUC it's an optional and can be opt-out by a kernel config. Currently trace_landlock() runs `perf test -w landlock` before the actual testing to check the availability but it's not enough since the workload always returns 0. Instead it could check if perf trace output has 'landlock' string. Fixes:d66763fed3("perf test trace_btf_enum: Add regression test for the BTF augmentation of enums in 'perf trace'") Reviewed-by: Howard Chu <howardchu95@gmail.com> Link: https://lore.kernel.org/r/20250128170629.1251574-1-namhyung@kernel.org Signed-off-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>