From 7361893d3f2f9e3aef39529dad0caf08bfcbb78f Mon Sep 17 00:00:00 2001
From: Douglas RAILLARD <public.douglas.raillard@gmail.com>
Date: Wed, 10 Apr 2019 19:10:33 +0100
Subject: [PATCH] lisa.trace: Avoid stacking event checker wrappers

When a function is decorated mutlitple times with required events,
accumulate all the information in the top-level wrapper and discard
inner levels of wrappers.
---
 lisa/trace.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lisa/trace.py b/lisa/trace.py
index a2f8d2486..83dfeab1a 100644
--- a/lisa/trace.py
+++ b/lisa/trace.py
@@ -1125,6 +1125,9 @@ class TraceEventCheckerBase(abc.ABC, Loggable):
             checker = self
         else:
             checker = AndTraceEventChecker([self, used_events])
+            # remove a layer of wrapper, since we took its used_events into
+            # account already
+            f = f.__wrapped__
 
         sig = inspect.signature(f)
         if sig.parameters:
-- 
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