perf data ctf: replace libbabeltrace with babeltrace2-ctf-writer

The 1.x branch of Babeltrace has been superseded by 2.x in 2020 and has
been unmaintained since 2022, efforts have started to remove it from
popular distributions.

Babeltrace 2.x offers a very similar 'ctf-writer' library that can be used
with minimal changes for the '--to-ctf' feature and has been packaged
since Debian 11 and Fedora 32.

This patch replaces the 'libbabeltrace' build feature with
'babeltrace2-ctf-writer' using pkgconfig detection, adjusts the naming of
the public headers and applies minor API cleanups.

There is no changes to the output ctf traces, the ctf-writer API still
implements version 1.8 of the CTF specification that can be read by
either Babeltrace 1 / 2 or any CTF compliant reader.

Also remove some ifdefs in the cli option parsing to allow printing the
helpful error message with '--to-ctf' when built without babeltrace2.

Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Derek Foreman <derek.foreman@collabora.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/tools/perf/tests/shell/test_perf_data_converter_ctf.sh b/tools/perf/tests/shell/test_perf_data_converter_ctf.sh
index 334eebc9945e..bc58a8dabf4c 100755
--- a/tools/perf/tests/shell/test_perf_data_converter_ctf.sh
+++ b/tools/perf/tests/shell/test_perf_data_converter_ctf.sh
@@ -24,11 +24,11 @@ trap_cleanup()
 }
 trap trap_cleanup exit term int
 
-check_babeltrace_support()
+check_babeltrace2_support()
 {
-	if ! perf check feature libbabeltrace
+	if ! perf check feature babeltrace2-ctf-writer
 	then
-		echo "perf not linked with libbabeltrace, skipping test"
+		echo "perf not linked with babeltrace2-ctf-writer, skipping test"
 		exit 2
 	fi
 }
@@ -97,7 +97,7 @@ test_ctf_converter_pipe()
 	fi
 }
 
-check_babeltrace_support
+check_babeltrace2_support
 test_ctf_converter_file
 test_ctf_converter_pipe