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TRACELOG(3) LTTng Manual TRACELOG(3) NAME tracelog - LTTng-UST printf(3)-like interface with a log level SYNOPSIS #include <lttng/tracelog.h> #define tracelog(level, fmt, ...) Link with -llttng-ust -llttng-ust-common. DESCRIPTION The tracelog() macro is part of version 0 of the LTTng-UST API (see the "Compatibility with previous APIs" section of lttng-ust(3)). Prefer using lttng_ust_tracelog(3) which is part of version 1 of the API and has the lttng_ust_ namespace. BUGS If you encounter any issue or usability problem, please report it on the LTTng bug tracker <https://bugs.lttng.org/projects/lttng-ust>. RESOURCES * LTTng project website <http://lttng.org> * LTTng documentation <http://lttng.org/docs> * Git repositories <http://git.lttng.org> * GitHub organization <http://github.com/lttng> * Continuous integration <http://ci.lttng.org/> * Mailing list <http://lists.lttng.org> for support and development: lt- tng-dev@lists.lttng.org * IRC channel <irc://irc.oftc.net/lttng>: #lttng on irc.oftc.net COPYRIGHTS This macro is part of the LTTng-UST project. This macro is distributed under the GNU Lesser General Public License, ver- sion 2.1 <http://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html>. See the COPYING <https://github.com/lttng/lttng-ust/blob/v2.13/COPYING> file for more details. THANKS Thanks to Ericsson for funding this work, providing real-life use cases, and testing. Special thanks to Michel Dagenais and the DORSAL laboratory <http://www.dorsal.polymtl.ca/> at Ecole Polytechnique de Montreal for the LTTng journey. AUTHORS LTTng-UST was originally written by Mathieu Desnoyers, with additional con- tributions from various other people. It is currently maintained by Mathieu Desnoyers <mailto:mathieu.desnoyers@efficios.com>. SEE ALSO lttng_ust_tracelog(3), lttng_ust_vtracelog(3) LTTng 2.13.9 08/02/2026 TRACELOG(3)
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