From fcc6d4bd76874585336cb0bbbd369702b59515d2 Mon Sep 17 00:00:00 2001 From: Paul Elder Date: Mon, 19 Oct 2020 19:18:17 +0900 Subject: libcamera: tracing: Implement tracing infrastructure Implement tracing infrastructure in libcamera. It takes .tp files, as required by lttng, and generates a tracepoint header and C file, as lttng requires. meson is updated accordingly to get it to compile with the rest of libcamera. Update the documentation accordingly. Signed-off-by: Paul Elder Reviewed-by: Laurent Pinchart Reviewed-by: Kieran Bingham --- utils/tracepoints/gen-tp-header.py | 38 ++++++++++++++++++++++++++++++++++++++ utils/tracepoints/meson.build | 5 +++++ 2 files changed, 43 insertions(+) create mode 100644 utils/tracepoints/gen-tp-header.py create mode 100644 utils/tracepoints/meson.build (limited to 'utils/tracepoints') diff --git a/utils/tracepoints/gen-tp-header.py b/utils/tracepoints/gen-tp-header.py new file mode 100644 index 00000000..bbd472d9 --- /dev/null +++ b/utils/tracepoints/gen-tp-header.py @@ -0,0 +1,38 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0-or-later +# Copyright (C) 2020, Google Inc. +# +# Author: Paul Elder +# +# gen-tp-header.py - Generate header file to contain lttng tracepoints + +import datetime +import jinja2 +import os +import sys + +def main(argv): + if len(argv) < 3: + print(f'Usage: {argv[0]} output template tp_files...') + return 1 + + output = argv[1] + template = argv[2] + + year = datetime.datetime.now().year + path = output.replace('include/', '', 1) + + source = '' + for fname in argv[3:]: + source += open(fname, 'r', encoding='utf-8').read() + '\n\n' + + template = jinja2.Template(open(template, 'r', encoding='utf-8').read()) + string = template.render(year=year, path=path, source=source) + + f = open(output, 'w', encoding='utf-8').write(string) + + return 0 + + +if __name__ == '__main__': + sys.exit(main(sys.argv)) diff --git a/utils/tracepoints/meson.build b/utils/tracepoints/meson.build new file mode 100644 index 00000000..807230fc --- /dev/null +++ b/utils/tracepoints/meson.build @@ -0,0 +1,5 @@ +# SPDX-License-Identifier: CC0-1.0 + +py_modules += ['jinja2'] + +gen_tracepoints_header = find_program('./gen-tp-header.py') -- cgit v1.2.1