507ad2bde3
This is useful for scripts that work with Perf and ETM trace. Rather than them trying to parse Perf's error output at runtime to see if it was linked or not. Signed-off-by: James Clark <james.clark@arm.com> Reviewed-by: Ian Rogers <irogers@google.com> Cc: al.grant@arm.com Signed-off-by: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20240301133829.346286-1-james.clark@arm.com