perf scripts python: exported-sql-viewer.py: Add tree level

As preparation for adding support for copying to clipboard, keep track of
what level each item is in tree items.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/20190503120828.25326-4-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/scripts/python/exported-sql-viewer.py b/tools/perf/scripts/python/exported-sql-viewer.py
index fd073e4..4895325 100755 (executable)
--- a/tools/perf/scripts/python/exported-sql-viewer.py
+++ b/tools/perf/scripts/python/exported-sql-viewer.py
@@ -456,6 +456,10 @@ class CallGraphLevelItemBase(object):
                self.query_done = False;
                self.child_count = 0
                self.child_items = []
+               if parent_item:
+                       self.level = parent_item.level + 1
+               else:
+                       self.level = 0
 
        def getChildItem(self, row):
                return self.child_items[row]