| Specify tracing options. |
| |
| @table @option |
| @item [enable=]@var{pattern} |
| Immediately enable events matching @var{pattern}. |
| The file must contain one event name (as listed in the @file{trace-events-all} |
| file) per line; globbing patterns are accepted too. This option is only |
| available if QEMU has been compiled with the @var{simple}, @var{stderr} |
| or @var{ftrace} tracing backend. To specify multiple events or patterns, |
| specify the @option{-trace} option multiple times. |
| |
| Use @code{-trace help} to print a list of names of trace points. |
| |
| @item events=@var{file} |
| Immediately enable events listed in @var{file}. |
| The file must contain one event name (as listed in the @file{trace-events-all} |
| file) per line; globbing patterns are accepted too. This option is only |
| available if QEMU has been compiled with the @var{simple}, @var{stderr} or |
| @var{ftrace} tracing backend. |
| |
| @item file=@var{file} |
| Log output traces to @var{file}. |
| This option is only available if QEMU has been compiled with |
| the @var{simple} tracing backend. |
| @end table |
