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commit70b5339cafupstream. trace_define_field_ext() is not used outside of trace_events.c, it should be static. Link: https://lore.kernel.org/oe-kbuild-all/202302130750.679RaRog-lkp@intel.com/ Fixes:b6c7abd1c2("tracing: Fix TASK_COMM_LEN in trace event format file") Reported-by: Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>