]> git.proxmox.com Git - mirror_qemu.git/blame - qemu-option-trace.texi
nbd: BLOCK_STATUS constants
[mirror_qemu.git] / qemu-option-trace.texi
CommitLineData
eeb2b8f7
DL
1Specify tracing options.
2
3@table @option
4@item [enable=]@var{pattern}
5Immediately enable events matching @var{pattern}.
6The file must contain one event name (as listed in the @file{trace-events-all}
7file) per line; globbing patterns are accepted too. This option is only
20f8a139 8available if QEMU has been compiled with the @var{simple}, @var{log}
eeb2b8f7
DL
9or @var{ftrace} tracing backend. To specify multiple events or patterns,
10specify the @option{-trace} option multiple times.
11
12Use @code{-trace help} to print a list of names of trace points.
13
14@item events=@var{file}
15Immediately enable events listed in @var{file}.
16The file must contain one event name (as listed in the @file{trace-events-all}
17file) per line; globbing patterns are accepted too. This option is only
20f8a139 18available if QEMU has been compiled with the @var{simple}, @var{log} or
eeb2b8f7
DL
19@var{ftrace} tracing backend.
20
21@item file=@var{file}
22Log output traces to @var{file}.
23This option is only available if QEMU has been compiled with
24the @var{simple} tracing backend.
25@end table