| Denis V. Lunev | eeb2b8f | 2016-06-17 17:44:09 +0300 | [diff] [blame] | 1 | Specify tracing options. |
| 2 | |
| 3 | @table @option |
| 4 | @item [enable=]@var{pattern} |
| 5 | Immediately enable events matching @var{pattern}. |
| 6 | The file must contain one event name (as listed in the @file{trace-events-all} |
| 7 | file) per line; globbing patterns are accepted too. This option is only |
| 8 | available if QEMU has been compiled with the @var{simple}, @var{stderr} |
| 9 | or @var{ftrace} tracing backend. To specify multiple events or patterns, |
| 10 | specify the @option{-trace} option multiple times. |
| 11 | |
| 12 | Use @code{-trace help} to print a list of names of trace points. |
| 13 | |
| 14 | @item events=@var{file} |
| 15 | Immediately enable events listed in @var{file}. |
| 16 | The file must contain one event name (as listed in the @file{trace-events-all} |
| 17 | file) per line; globbing patterns are accepted too. This option is only |
| 18 | available if QEMU has been compiled with the @var{simple}, @var{stderr} or |
| 19 | @var{ftrace} tracing backend. |
| 20 | |
| 21 | @item file=@var{file} |
| 22 | Log output traces to @var{file}. |
| 23 | This option is only available if QEMU has been compiled with |
| 24 | the @var{simple} tracing backend. |
| 25 | @end table |
