tracetool needs to know the group name ("all", "root", or a specific
subdirectory). Also remove the stdin redirection because tracetool.py
needs the path to the trace-events file. Update the documentation.
Fixes:
2098c56a9bc5901e145fa5d4759f075808811685
("trace: move setting of group name into Makefiles")
Buglink: https://bugs.launchpad.net/bugs/1844814
Reported-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <
20191009135154.10970-1-stefanha@redhat.com>
--binary path/to/qemu-binary \
--target-type system \
--target-name x86_64 \
- <trace-events-all >qemu.stp
+ --group=all \
+ trace-events-all >qemu.stp
To facilitate simple usage of systemtap where there merely needs to be printf
logging of certain probes, a helper script "qemu-trace-stap" is provided.