linux-kernel - [tip:perf/urgent] perf script python: Fix export-to-postgresql.py occasional failure

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Date:   Fri, 5 Oct 2018 09:18:55 -0700
From:   tip-bot for Adrian Hunter <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     jolsa@...hat.com, acme@...hat.com, mingo@...nel.org,
        tglx@...utronix.de, linux-kernel@...r.kernel.org,
        adrian.hunter@...el.com, hpa@...or.com
Subject: [tip:perf/urgent] perf script python: Fix export-to-postgresql.py
 occasional failure

Commit-ID:  25e11700b54c7b6b5ebfc4361981dae12299557b
Gitweb:     https://git.kernel.org/tip/25e11700b54c7b6b5ebfc4361981dae12299557b
Author:     Adrian Hunter <adrian.hunter@...el.com>
AuthorDate: Tue, 11 Sep 2018 14:45:03 +0300
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Tue, 25 Sep 2018 11:33:06 -0300

perf script python: Fix export-to-postgresql.py occasional failure

Occasional export failures were found to be caused by truncating 64-bit
pointers to 32-bits. Fix by explicitly setting types for all ctype
arguments and results.

Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: stable@...r.kernel.org
Link: http://lkml.kernel.org/r/20180911114504.28516-2-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/scripts/python/export-to-postgresql.py | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/tools/perf/scripts/python/export-to-postgresql.py b/tools/perf/scripts/python/export-to-postgresql.py
index efcaf6cac2eb..e46f51b17513 100644
--- a/tools/perf/scripts/python/export-to-postgresql.py
+++ b/tools/perf/scripts/python/export-to-postgresql.py
@@ -204,14 +204,23 @@ from ctypes import *
 libpq = CDLL("libpq.so.5")
 PQconnectdb = libpq.PQconnectdb
 PQconnectdb.restype = c_void_p
+PQconnectdb.argtypes = [ c_char_p ]
 PQfinish = libpq.PQfinish
+PQfinish.argtypes = [ c_void_p ]
 PQstatus = libpq.PQstatus
+PQstatus.restype = c_int
+PQstatus.argtypes = [ c_void_p ]
 PQexec = libpq.PQexec
 PQexec.restype = c_void_p
+PQexec.argtypes = [ c_void_p, c_char_p ]
 PQresultStatus = libpq.PQresultStatus
+PQresultStatus.restype = c_int
+PQresultStatus.argtypes = [ c_void_p ]
 PQputCopyData = libpq.PQputCopyData
+PQputCopyData.restype = c_int
 PQputCopyData.argtypes = [ c_void_p, c_void_p, c_int ]
 PQputCopyEnd = libpq.PQputCopyEnd
+PQputCopyEnd.restype = c_int
 PQputCopyEnd.argtypes = [ c_void_p, c_void_p ]
 
 sys.path.append(os.environ['PERF_EXEC_PATH'] + \