Stefan Hajnoczi b33b890cd0 trace: avoid SystemTap dtrace(1) warnings on empty files ...

target/hppa/trace-events only contains disabled events, resulting in a
trace-dtrace.dtrace file that says "provider qemu {}".  SystemTap's
dtrace(1) tool prints a warning when processing this input file.

This patch avoids the error by emitting an empty file instead of
"provider qemu {}" when there are no enabled trace events.

Fixes: 23c3d569f4 ("target/hppa: add TLB trace events")
Reported-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
Message-id: 20190321170831.6539-3-stefanha@redhat.com
Message-Id: <20190321170831.6539-3-stefanha@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

2019-03-22 15:55:50 +00:00

..

__init__.py

trace: introduce a formal group name for trace events

2016-10-12 09:54:53 +02:00

c.py

trace: switch to modular code generation for sub-directories

2017-01-31 17:11:18 +00:00

d.py

trace: avoid SystemTap dtrace(1) warnings on empty files

2019-03-22 15:55:50 +00:00

h.py

trace: add TRACE_<event>_BACKEND_DSTATE()

2017-08-01 12:07:48 +01:00

log_stap.py

trace: add ability to do simple printf logging via systemtap

2019-01-24 14:16:56 +00:00

simpletrace_stap.py

scripts: Remove unused python imports

2019-01-17 17:52:40 -02:00

stap.py

trace: introduce a formal group name for trace events

2016-10-12 09:54:53 +02:00

tcg_h.py

trace: [tcg] Do not generate TCG code to trace dynamically-disabled events

2017-07-17 13:11:12 +01:00

tcg_helper_c.py

trace: [tcg] Do not generate TCG code to trace dynamically-disabled events

2017-07-17 13:11:12 +01:00

tcg_helper_h.py

trace: introduce a formal group name for trace events

2016-10-12 09:54:53 +02:00

tcg_helper_wrapper_h.py

trace: introduce a formal group name for trace events

2016-10-12 09:54:53 +02:00

ust_events_c.py

trace: switch to modular code generation for sub-directories

2017-01-31 17:11:18 +00:00

ust_events_h.py

tracetool: For ust trace bool type as ctf_integer

2018-02-19 13:09:44 +00:00