From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Richter Subject: [PATCH 2/9] perf test: perf test case 15 result ignored Date: Wed, 9 Aug 2017 08:40:33 +0200 Message-ID: <20170809064040.50899-2-tmricht@linux.vnet.ibm.com> References: <20170809064040.50899-1-tmricht@linux.vnet.ibm.com> Return-path: Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:38368 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751974AbdHIGkw (ORCPT ); Wed, 9 Aug 2017 02:40:52 -0400 Received: from pps.filterd (m0098420.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id v796cnNK147148 for ; Wed, 9 Aug 2017 02:40:52 -0400 Received: from e06smtp15.uk.ibm.com (e06smtp15.uk.ibm.com [195.75.94.111]) by mx0b-001b2d01.pphosted.com with ESMTP id 2c7rp5wt52-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Wed, 09 Aug 2017 02:40:52 -0400 Received: from localhost by e06smtp15.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 9 Aug 2017 07:40:50 +0100 In-Reply-To: <20170809064040.50899-1-tmricht@linux.vnet.ibm.com> Sender: linux-perf-users-owner@vger.kernel.org List-ID: To: acme@kernel.org, jolsa@redhat.com, linux-perf-users@vger.kernel.org Cc: brueckner@linux.vnet.ibm.com, Thomas Richter Command perf test -v 15 (Setup struct perf_event_attr test) always reports success even if the test case fails. It works correctly if you also specify -F (for don't fork). root@s35lp76 perf]# ./perf test -v 15 15: Setup struct perf_event_attr : --- start --- running './tests/attr/test-record-no-delay' [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.002 MB /tmp/tmp4E1h7R/perf.data (1 samples) ] expected task=0, got 1 expected precise_ip=0, got 3 expected wakeup_events=1, got 0 FAILED './tests/attr/test-record-no-delay' - match failure test child finished with 0 ---- end ---- Setup struct perf_event_attr: Ok The reason for the wrong error reporting is the return value of the system() library call. It is called in run_dir() file tests/attr.c and returns the exit status, in above case 0xff00. This value is given as parameter to the exit() function which can only handle values 0-0xff. The child process terminates with exit value of 0 and the parent does not detect any error. This patch corrects the error reporting and prints the correct test result. Signed-off-by: Thomas Richter --- tools/perf/tests/attr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/tests/attr.c b/tools/perf/tests/attr.c index 84c0eb5..9d932c6 100644 --- a/tools/perf/tests/attr.c +++ b/tools/perf/tests/attr.c @@ -166,7 +166,7 @@ static int run_dir(const char *d, const char *perf) snprintf(cmd, 3*PATH_MAX, PYTHON " %s/attr.py -d %s/attr/ -p %s %.*s", d, d, perf, vcnt, v); - return system(cmd); + return system(cmd) ? TEST_FAIL : TEST_OK; } int test__attr(int subtest __maybe_unused) -- 2.9.3