The current instructions for setting up an Ubuntu system for using
the export-to-postgresql.py script are incorrect.

The instructions in the script have been updated to work on newer
versions of ubuntu.

-Add missing dependencies to apt-get command:
    python-pyside.qtsql, libqt4-sql-psql
-Add '-s' option to createuser command to force the user to be a
    superuser since the command doesn't prompt as indicated in the
    current instructions.

Tested on: Ubuntu 14.04, Ubuntu 16.04(beta)

Signed-off-by: Chris Phlipot <cphlip...@gmail.com>
---
 tools/perf/scripts/python/export-to-postgresql.py | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/tools/perf/scripts/python/export-to-postgresql.py 
b/tools/perf/scripts/python/export-to-postgresql.py
index 1b02cdc..6f0ca68 100644
--- a/tools/perf/scripts/python/export-to-postgresql.py
+++ b/tools/perf/scripts/python/export-to-postgresql.py
@@ -34,10 +34,9 @@ import datetime
 #
 # ubuntu:
 #
-#      $ sudo apt-get install postgresql
+#      $ sudo apt-get install postgresql python-pyside.qtsql libqt4-sql-psql
 #      $ sudo su - postgres
-#      $ createuser <your user id here>
-#      Shall the new role be a superuser? (y/n) y
+#      $ createuser -s <your user id here>
 #
 # An example of using this script with Intel PT:
 #
-- 
2.7.4

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