diff options
Diffstat (limited to 'qemu-options.hx')
| -rw-r--r-- | qemu-options.hx | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/qemu-options.hx b/qemu-options.hx index f31a240bed..733a1949e9 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -3544,7 +3544,7 @@ config files on @var{sysconfdir}, but won't make it skip the QEMU-provided confi files from @var{datadir}. ETEXI DEF("trace", HAS_ARG, QEMU_OPTION_trace, - "-trace [events=<file>][,file=<file>]\n" + "-trace [[enable=]<pattern>][,events=<file>][,file=<file>]\n" " specify tracing options\n", QEMU_ARCH_ALL) STEXI @@ -3556,15 +3556,25 @@ HXCOMM HX does not support conditional compilation of text. 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} 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 @var{trace-events} file) -per line. -This option is only available if QEMU has been compiled with -either @var{simple} or @var{stderr} tracing backend. +The file must contain one event name (as listed in the @file{trace-events} 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 |