Tools lint cleanup (#764)

* argdist: linter cleanup

* cpudist: linter cleanup

* execsnoop: linter cleanup

* funclatency: linter cleanup

* gethostlatency: linter cleanup

* hardirqs: linter cleanup

* memleak: linter cleanup

* mountsnoop: linter cleanup

* offcputime: linter cleanup

* softirqs: linter cleanup

* solisten: linter cleanup and u+x mode

* stacksnoop: linter cleanup

* tplist: linter cleanup

* trace: linter cleanup
diff --git a/tools/stacksnoop.py b/tools/stacksnoop.py
index 421ce1b..1eefc0a 100755
--- a/tools/stacksnoop.py
+++ b/tools/stacksnoop.py
@@ -114,8 +114,8 @@
     ts = time.time() - start_ts
 
     if verbose:
-        print("%-18.9f %-12.12s %-6d %-3d %s" % (ts, event.comm, event.pid, cpu,
-                function))
+        print("%-18.9f %-12.12s %-6d %-3d %s" %
+              (ts, event.comm, event.pid, cpu, function))
     else:
         print("%-18.9f %s" % (ts, function))