tracing/uprobes: Use trace_event_buffer_reserve() helper

To be consistent with kprobes and eprobes, use
trace_event_buffer_reserver() and trace_event_buffer_commit(). This will
ensure that any updates to trace events will also be implemented on uprobe
events.

Link: https://lkml.kernel.org/r/20211206162440.69fbf96c@gandalf.local.home



Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>