Demote unhandled perf feature/type warnings to debug output

This removes warning spam for perf features we simply don't support
yet. All of these are not really needed for us right now, so it's
pretty useless to spam the end user with these warnings, when we
devs know that they are harmless.

Examples on my machine:
```
feature not properly read PerfHeader::BPF_PROG_INFO 4 0
feature not properly read PerfHeader::BPF_BTF 4 0
feature not properly read PerfHeader::SAMPLE_TIME 16 0
feature not properly read PerfHeader::CACHE 8808 0
feature not properly read PerfHeader::MEM_TOPOLOGY 88 0
feature not properly read PerfHeader::CPU_TOPOLOGY 1252 892
feature not properly read PerfHeader::CPU_PMU_CAPS 140 0

unhandled event type 79   PERF_RECORD_TIME_CONV
unhandled event type 73   PERF_RECORD_THREAD_MAP
unhandled event type 74   PERF_RECORD_CPU_MAP
```

We keep the warning for those features that we do support. If we
don't read the full size of them, then something changed which
we want to be made aware of.

Change-Id: I0c6f564518788e6129be671551e84910c3cbf1d0
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>

2 files changed, 3 insertions, 2 deletions

diff --git a/app/perfdata.cpp b/app/perfdata.cpp
index af194ce..ef714b9 100644
--- a/app/perfdata.cpp
+++ b/app/perfdata.cpp
@@ -345,7 +345,7 @@ PerfData::ReadStatus PerfData::processEvents(QDataStream &stream)
         break;
 
     default:
-        qWarning() << "unhandled event type" << m_eventHeader.type << " " << perfEventToString(m_eventHeader.type);
+        qDebug() << "unhandled event type" << m_eventHeader.type << " " << perfEventToString(m_eventHeader.type);
         stream.skipRawData(contentSize);
         break;
     }
diff --git a/app/perffeatures.cpp b/app/perffeatures.cpp
index 9b715a1..9a34b5d 100644
--- a/app/perffeatures.cpp
+++ b/app/perffeatures.cpp
@@ -106,7 +106,8 @@ void PerfFeatures::createFeature(QIODevice *device, QDataStream::ByteOrder byteO
         stream >> m_compressed;
         break;
     default:
-        break;
+        qDebug() << "unhandled feature" << featureId << section.size;
+        return;
     }
 
     qint64 readSize = device->pos() - section.offset;