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20f8a1392f
With commit ed7f5f1d8d the name of
this backend changed from “stderr” to “log”.
Signed-off-by: Philipp Gesang <philipp.gesang@intra2net.com>
Message-id: 20170202114101.2655-1-philipp.gesang@intra2net.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
26 lines
1021 B
Plaintext
26 lines
1021 B
Plaintext
Specify tracing options.
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@table @option
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@item [enable=]@var{pattern}
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Immediately enable events matching @var{pattern}.
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The file must contain one event name (as listed in the @file{trace-events-all}
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file) per line; globbing patterns are accepted too. This option is only
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available if QEMU has been compiled with the @var{simple}, @var{log}
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or @var{ftrace} tracing backend. To specify multiple events or patterns,
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specify the @option{-trace} option multiple times.
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Use @code{-trace help} to print a list of names of trace points.
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@item events=@var{file}
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Immediately enable events listed in @var{file}.
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The file must contain one event name (as listed in the @file{trace-events-all}
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file) per line; globbing patterns are accepted too. This option is only
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available if QEMU has been compiled with the @var{simple}, @var{log} or
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@var{ftrace} tracing backend.
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@item file=@var{file}
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Log output traces to @var{file}.
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This option is only available if QEMU has been compiled with
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the @var{simple} tracing backend.
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@end table
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