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Thu, 5 Jan 2023 12:17:49 GMT Received: from smtpav06.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 8851220049; Thu, 5 Jan 2023 12:17:49 +0000 (GMT) Received: from smtpav06.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A52D920040; Thu, 5 Jan 2023 12:17:46 +0000 (GMT) Received: from localhost.localdomain (unknown [9.43.120.85]) by smtpav06.fra02v.mail.ibm.com (Postfix) with ESMTP; Thu, 5 Jan 2023 12:17:46 +0000 (GMT) From: Athira Rajeev To: acme@kernel.org, jolsa@kernel.org Subject: [PATCH 2/2] perf test bpf: Skip test if kernel-debuginfo is not present Date: Thu, 5 Jan 2023 17:47:42 +0530 Message-Id: <20230105121742.92249-2-atrajeev@linux.vnet.ibm.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20230105121742.92249-1-atrajeev@linux.vnet.ibm.com> References: <20230105121742.92249-1-atrajeev@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: w8DXrrs75cnw21zhSMlvaqu8NjJ3rhCG X-Proofpoint-ORIG-GUID: SvHkVjmCQLCuoUXrfSHiKXOtTNMoH70T X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.923,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2023-01-05_04,2023-01-04_02,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 lowpriorityscore=0 malwarescore=0 priorityscore=1501 phishscore=0 impostorscore=0 suspectscore=0 adultscore=0 clxscore=1015 mlxlogscore=999 spamscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2301050095 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: irogers@google.com, ak@linux.intel.com, rnsastry@linux.ibm.com, linux-perf-users@vger.kernel.org, maddy@linux.vnet.ibm.com, james.clark@arm.com, kjain@linux.ibm.com, namhyung@kernel.org, disgoel@linux.ibm.com, linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Perf BPF filter test fails in environment where "kernel-debuginfo" is not installed. Test failure logs: <<>> 42: BPF filter : 42.1: Basic BPF filtering : Ok 42.2: BPF pinning : Ok 42.3: BPF prologue generation : FAILED! <<>> Enabling verbose option provided debug logs, which says debuginfo needs to be installed. Snippet of verbose logs: <<>> 42.3: BPF prologue generation : --- start --- test child forked, pid 28218 <<>> Rebuild with CONFIG_DEBUG_INFO=y, or install an appropriate debuginfo package. bpf_probe: failed to convert perf probe events Failed to add events selected by BPF test child finished with -1 ---- end ---- BPF filter subtest 3: FAILED! <<>> Here subtest, "BPF prologue generation" failed and logs shows debuginfo is needed. After installing kernel-debuginfo package, testcase passes. Subtest "BPF prologue generation" failed because, the "do_test" function returns "TEST_FAIL" without checking the error type returned by "parse_events_load_bpf_obj" function. Function parse_events_load_bpf_obj can also return error of type "-ENODATA" incase kernel-debuginfo package is not installed. Fix this by adding check for -ENODATA error. Test result after the patch changes: Test failure logs: <<>> 42: BPF filter : 42.1: Basic BPF filtering : Ok 42.2: BPF pinning : Ok 42.3: BPF prologue generation : Skip (clang/debuginfo isn't installed or environment missing BPF support) Fixes: ba1fae431e74 ("perf test: Add 'perf test BPF'") Signed-off-by: Athira Rajeev --- Note: This is dependent on patch 1: tools/perf: Update the exit error codes in function try_to_find_probe_trace_event tools/perf/tests/bpf.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/tools/perf/tests/bpf.c b/tools/perf/tests/bpf.c index 17c023823713..6a4235a9cf57 100644 --- a/tools/perf/tests/bpf.c +++ b/tools/perf/tests/bpf.c @@ -126,6 +126,10 @@ static int do_test(struct bpf_object *obj, int (*func)(void), err = parse_events_load_bpf_obj(&parse_state, &parse_state.list, obj, NULL); parse_events_error__exit(&parse_error); + if (err == -ENODATA) { + pr_debug("Failed to add events selected by BPF, debuginfo package not installed\n"); + return TEST_SKIP; + } if (err || list_empty(&parse_state.list)) { pr_debug("Failed to add events selected by BPF\n"); return TEST_FAIL; @@ -368,7 +372,7 @@ static struct test_case bpf_tests[] = { "clang isn't installed or environment missing BPF support"), #ifdef HAVE_BPF_PROLOGUE TEST_CASE_REASON("BPF prologue generation", bpf_prologue_test, - "clang isn't installed or environment missing BPF support"), + "clang/debuginfo isn't installed or environment missing BPF support"), #else TEST_CASE_REASON("BPF prologue generation", bpf_prologue_test, "not compiled in"), #endif -- 2.31.1