| 1 | # SPDX-License-Identifier: GPL-2.0-or-later |
| 2 | |
| 3 | """ |
| 4 | LTTng User Space Tracing backend. |
| 5 | """ |
| 6 | |
| 7 | __author__ = "Lluís Vilanova <vilanova@ac.upc.edu>" |
| 8 | __copyright__ = "Copyright 2012-2017, Lluís Vilanova <vilanova@ac.upc.edu>" |
| 9 | __license__ = "GPL version 2 or (at your option) any later version" |
| 10 | |
| 11 | __maintainer__ = "Stefan Hajnoczi" |
| 12 | __email__ = "stefanha@redhat.com" |
| 13 | |
| 14 | |
| 15 | from tracetool import out |
| 16 | |
| 17 | |
| 18 | PUBLIC = True |
| 19 | |
| 20 | |
| 21 | def generate_h_begin(events, group): |
| 22 | header = 'trace-ust-' + group + '.h' |
| 23 | out('#include <lttng/tracepoint.h>', |
| 24 | '#include "%s"' % header, |
| 25 | '', |
| 26 | '/* tracepoint_enabled() was introduced in LTTng UST 2.7 */', |
| 27 | '#ifndef tracepoint_enabled', |
| 28 | '#define tracepoint_enabled(a, b) true', |
| 29 | '#endif', |
| 30 | '') |
| 31 | |
| 32 | |
| 33 | def generate_h(event, group): |
| 34 | argnames = ", ".join(event.args.names()) |
| 35 | if len(event.args) > 0: |
| 36 | argnames = ", " + argnames |
| 37 | |
| 38 | out(' tracepoint(qemu, %(name)s%(tp_args)s);', |
| 39 | name=event.name, |
| 40 | tp_args=argnames) |
| 41 | |
| 42 | |
| 43 | def generate_h_backend_dstate(event, group): |
| 44 | out(' tracepoint_enabled(qemu, %(name)s) || \\', |
| 45 | name=event.name) |