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-rw-r--r--scripts/tracetool/format/d.py5
1 files changed, 5 insertions, 0 deletions
diff --git a/scripts/tracetool/format/d.py b/scripts/tracetool/format/d.py
index 78397c24d2..c7cb2a93a6 100644
--- a/scripts/tracetool/format/d.py
+++ b/scripts/tracetool/format/d.py
@@ -33,6 +33,11 @@ def generate(events, backend, group):
events = [e for e in events
if "disable" not in e.properties]
+ # SystemTap's dtrace(1) warns about empty "provider qemu {}" but is happy
+ # with an empty file. Avoid the warning.
+ if not events:
+ return
+
out('/* This file is autogenerated by tracetool, do not edit. */'
'',
'provider qemu {')