From 8efeedf5aac77b58f68e6eb9df62758ba1882bb3 Mon Sep 17 00:00:00 2001 From: Athira Rajeev Date: Fri, 10 Jun 2022 19:11:06 +0530 Subject: selftests/powerpc/pmu: Add selftest for PERF_TYPE_HARDWARE events valid check Testcase to ensure that using invalid event in generic event for PERF_TYPE_HARDWARE will fail. Invalid generic events in power10 are: - PERF_COUNT_HW_BUS_CYCLES - PERF_COUNT_HW_STALLED_CYCLES_FRONTEND - PERF_COUNT_HW_STALLED_CYCLES_BACKEND - PERF_COUNT_HW_REF_CPU_CYCLES Invalid generic events in power9 are: - PERF_COUNT_HW_BUS_CYCLES - PERF_COUNT_HW_REF_CPU_CYCLES Testcase does event open for valid and invalid generic events to ensure event open works for all valid events and fails for invalid events. Signed-off-by: Athira Rajeev Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20220610134113.62991-29-atrajeev@linux.vnet.ibm.com --- .../powerpc/pmu/event_code_tests/Makefile | 2 +- .../event_code_tests/generic_events_valid_test.c | 130 +++++++++++++++++++++ 2 files changed, 131 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/powerpc/pmu/event_code_tests/generic_events_valid_test.c (limited to 'tools/testing/selftests') diff --git a/tools/testing/selftests/powerpc/pmu/event_code_tests/Makefile b/tools/testing/selftests/powerpc/pmu/event_code_tests/Makefile index 50bcc036dddf..0d56f1ef530f 100644 --- a/tools/testing/selftests/powerpc/pmu/event_code_tests/Makefile +++ b/tools/testing/selftests/powerpc/pmu/event_code_tests/Makefile @@ -4,7 +4,7 @@ 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_mmcra_sample_test invalid_event_code_test reserved_bits_mmcra_thresh_ctl_test \ - blacklisted_events_test event_alternatives_tests_p9 event_alternatives_tests_p10 + blacklisted_events_test event_alternatives_tests_p9 event_alternatives_tests_p10 generic_events_valid_test top_srcdir = ../../../../../.. include ../../../lib.mk diff --git a/tools/testing/selftests/powerpc/pmu/event_code_tests/generic_events_valid_test.c b/tools/testing/selftests/powerpc/pmu/event_code_tests/generic_events_valid_test.c new file mode 100644 index 000000000000..0d237c15d3f2 --- /dev/null +++ b/tools/testing/selftests/powerpc/pmu/event_code_tests/generic_events_valid_test.c @@ -0,0 +1,130 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright 2022, Athira Rajeev, IBM Corp. + */ + +#include +#include +#include +#include "../event.h" +#include "../sampling_tests/misc.h" + +/* + * Testcase to ensure that using invalid event in generic + * event for PERF_TYPE_HARDWARE should fail + */ + +static int generic_events_valid_test(void) +{ + struct event event; + + /* Check for platform support for the test */ + SKIP_IF(platform_check_for_tests()); + + /* generic events is different in compat_mode */ + SKIP_IF(check_for_generic_compat_pmu()); + + /* + * Invalid generic events in power10: + * - PERF_COUNT_HW_BUS_CYCLES + * - PERF_COUNT_HW_STALLED_CYCLES_FRONTEND + * - PERF_COUNT_HW_STALLED_CYCLES_BACKEND + * - PERF_COUNT_HW_REF_CPU_CYCLES + */ + if (PVR_VER(mfspr(SPRN_PVR)) == POWER10) { + event_init_opts(&event, PERF_COUNT_HW_CPU_CYCLES, PERF_TYPE_HARDWARE, "event"); + FAIL_IF(event_open(&event)); + event_close(&event); + + event_init_opts(&event, PERF_COUNT_HW_INSTRUCTIONS, + PERF_TYPE_HARDWARE, "event"); + FAIL_IF(event_open(&event)); + event_close(&event); + + event_init_opts(&event, PERF_COUNT_HW_CACHE_REFERENCES, + PERF_TYPE_HARDWARE, "event"); + FAIL_IF(event_open(&event)); + event_close(&event); + + event_init_opts(&event, PERF_COUNT_HW_CACHE_MISSES, PERF_TYPE_HARDWARE, "event"); + FAIL_IF(event_open(&event)); + event_close(&event); + + event_init_opts(&event, PERF_COUNT_HW_BRANCH_INSTRUCTIONS, + PERF_TYPE_HARDWARE, "event"); + FAIL_IF(event_open(&event)); + event_close(&event); + + event_init_opts(&event, PERF_COUNT_HW_BRANCH_MISSES, PERF_TYPE_HARDWARE, "event"); + FAIL_IF(event_open(&event)); + event_close(&event); + + event_init_opts(&event, PERF_COUNT_HW_BUS_CYCLES, PERF_TYPE_HARDWARE, "event"); + FAIL_IF(!event_open(&event)); + + event_init_opts(&event, PERF_COUNT_HW_STALLED_CYCLES_FRONTEND, + PERF_TYPE_HARDWARE, "event"); + FAIL_IF(!event_open(&event)); + + event_init_opts(&event, PERF_COUNT_HW_STALLED_CYCLES_BACKEND, + PERF_TYPE_HARDWARE, "event"); + FAIL_IF(!event_open(&event)); + + event_init_opts(&event, PERF_COUNT_HW_REF_CPU_CYCLES, PERF_TYPE_HARDWARE, "event"); + FAIL_IF(!event_open(&event)); + } else if (PVR_VER(mfspr(SPRN_PVR)) == POWER9) { + /* + * Invalid generic events in power9: + * - PERF_COUNT_HW_BUS_CYCLES + * - PERF_COUNT_HW_REF_CPU_CYCLES + */ + event_init_opts(&event, PERF_COUNT_HW_CPU_CYCLES, PERF_TYPE_HARDWARE, "event"); + FAIL_IF(event_open(&event)); + event_close(&event); + + event_init_opts(&event, PERF_COUNT_HW_INSTRUCTIONS, PERF_TYPE_HARDWARE, "event"); + FAIL_IF(event_open(&event)); + event_close(&event); + + event_init_opts(&event, PERF_COUNT_HW_CACHE_REFERENCES, + PERF_TYPE_HARDWARE, "event"); + FAIL_IF(event_open(&event)); + event_close(&event); + + event_init_opts(&event, PERF_COUNT_HW_CACHE_MISSES, PERF_TYPE_HARDWARE, "event"); + FAIL_IF(event_open(&event)); + event_close(&event); + + event_init_opts(&event, PERF_COUNT_HW_BRANCH_INSTRUCTIONS, + PERF_TYPE_HARDWARE, "event"); + FAIL_IF(event_open(&event)); + event_close(&event); + + event_init_opts(&event, PERF_COUNT_HW_BRANCH_MISSES, PERF_TYPE_HARDWARE, "event"); + FAIL_IF(event_open(&event)); + event_close(&event); + + event_init_opts(&event, PERF_COUNT_HW_BUS_CYCLES, PERF_TYPE_HARDWARE, "event"); + FAIL_IF(!event_open(&event)); + + event_init_opts(&event, PERF_COUNT_HW_STALLED_CYCLES_FRONTEND, + PERF_TYPE_HARDWARE, "event"); + FAIL_IF(event_open(&event)); + event_close(&event); + + event_init_opts(&event, PERF_COUNT_HW_STALLED_CYCLES_BACKEND, + PERF_TYPE_HARDWARE, "event"); + FAIL_IF(event_open(&event)); + event_close(&event); + + event_init_opts(&event, PERF_COUNT_HW_REF_CPU_CYCLES, PERF_TYPE_HARDWARE, "event"); + FAIL_IF(!event_open(&event)); + } + + return 0; +} + +int main(void) +{ + return test_harness(generic_events_valid_test, "generic_events_valid_test"); +} -- cgit v1.2.3