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Fri, 20 May 2022 09:19:23 +0000 (GMT) Received: from localhost.localdomain (unknown [9.163.31.125]) by d06av22.portsmouth.uk.ibm.com (Postfix) with ESMTP; Fri, 20 May 2022 09:19:22 +0000 (GMT) From: Athira Rajeev To: mpe@ellerman.id.au Subject: [PATCH V2 22/35] selftest/powerpc/pmu: Add selftest for group constraint check MMCRA sample bits Date: Fri, 20 May 2022 14:47:38 +0530 Message-Id: <20220520091751.17000-23-atrajeev@linux.vnet.ibm.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220520091751.17000-1-atrajeev@linux.vnet.ibm.com> References: <20220520091751.17000-1-atrajeev@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: nH-OK9voSHJvkbcuzVF44IWRPfNH9jU- X-Proofpoint-GUID: nH-OK9voSHJvkbcuzVF44IWRPfNH9jU- X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.874,Hydra:6.0.486,FMLib:17.11.64.514 definitions=2022-05-20_03,2022-05-19_03,2022-02-23_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 malwarescore=0 impostorscore=0 suspectscore=0 spamscore=0 clxscore=1015 priorityscore=1501 bulkscore=0 mlxlogscore=999 adultscore=0 phishscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2202240000 definitions=main-2205200066 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: kjain@linux.ibm.com, maddy@linux.vnet.ibm.com, linuxppc-dev@lists.ozlabs.org, disgoel@linux.vnet.ibm.com, rnsastry@linux.ibm.com Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Events with different "sample" field values which is used to program Monitor Mode Control Register A (MMCRA) in a group will fail to schedule. Testcase uses event with load only sampling mode as group leader and event with store only sampling as sibling event. So that it can check that using different sample bits in event code will fail in event open for group of events Signed-off-by: Athira Rajeev --- .../powerpc/pmu/event_code_tests/Makefile | 3 +- .../group_constraint_mmcra_sample_test.c | 54 +++++++++++++++++++ 2 files changed, 56 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/powerpc/pmu/event_code_tests/group_constraint_mmcra_sample_test.c diff --git a/tools/testing/selftests/powerpc/pmu/event_code_tests/Makefile b/tools/testing/selftests/powerpc/pmu/event_code_tests/Makefile index 5dd482843572..590b642ef900 100644 --- a/tools/testing/selftests/powerpc/pmu/event_code_tests/Makefile +++ b/tools/testing/selftests/powerpc/pmu/event_code_tests/Makefile @@ -2,7 +2,8 @@ CFLAGS += -m64 TEST_GEN_PROGS := group_constraint_pmc56_test group_pmc56_exclude_constraints_test group_constraint_pmc_count_test \ - group_constraint_repeat_test group_constraint_radix_scope_qual_test reserved_bits_mmcra_sample_elig_mode_test + group_constraint_repeat_test group_constraint_radix_scope_qual_test reserved_bits_mmcra_sample_elig_mode_test \ + group_constraint_mmcra_sample_test top_srcdir = ../../../../../.. include ../../../lib.mk diff --git a/tools/testing/selftests/powerpc/pmu/event_code_tests/group_constraint_mmcra_sample_test.c b/tools/testing/selftests/powerpc/pmu/event_code_tests/group_constraint_mmcra_sample_test.c new file mode 100644 index 000000000000..ff625b5d80eb --- /dev/null +++ b/tools/testing/selftests/powerpc/pmu/event_code_tests/group_constraint_mmcra_sample_test.c @@ -0,0 +1,54 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright 2022, Athira Rajeev, IBM Corp. + */ + +#include +#include "../event.h" +#include "../sampling_tests/misc.h" + +#define EventCode_1 0x35340401e0 +#define EventCode_2 0x353c0101ec +#define EventCode_3 0x35340101ec +/* + * Test that using different sample bits in + * event code cause failure in schedule for + * group of events. + */ + +static int group_constraint_mmcra_sample(void) +{ + struct event event, leader; + + SKIP_IF(platform_check_for_tests()); + + /* + * Events with different "sample" field values + * in a group will fail to schedule. + * Use event with load only sampling mode as + * group leader. Use event with store only sampling + * as sibling event. + */ + event_init(&leader, EventCode_1); + FAIL_IF(event_open(&leader)); + + event_init(&event, EventCode_2); + + /* Expected to fail as sibling event doesn't use same sampling bits as leader */ + FAIL_IF(!event_open_with_group(&event, leader.fd)); + + event_init(&event, EventCode_3); + + /* Expected to pass as sibling event use same sampling bits as leader */ + FAIL_IF(event_open_with_group(&event, leader.fd)); + + event_close(&leader); + event_close(&event); + + return 0; +} + +int main(void) +{ + return test_harness(group_constraint_mmcra_sample, "group_constraint_mmcra_sample"); +} -- 2.35.1