Patch series extends the perf interface selftests to cover scenarios for event code checking, group constraints, and also thresholding/branch related interface tests in sampling area.
In this series, patches 1 to 14 adds additional tests under "powerpc/sampling_tests". These adds support for handling sample type PERF_SAMPLE_BRANCH_STACK along with interrupt regs. It adds utility functions and test for thresh_cmp and branch filters programmed in control register. Some of the tests needs to be skipped for "Generic Compat PMU" environment. Hence utility functions are added in "include/utils.c" and "sampling_tests/misc.h" to detect platform based on "auxv" entries. Currently in other architectures (like x86), the pmu_name is exposed via sysfs caps folder ie: "sys/bus/event_source/devices/<pmu>/caps". But in powerpc, "caps" is not supported. So, though the approach for detecting compat mode currently uses auxv, patchset adds an utility function considering a possibility of getting "caps" added for powerpc. Link to the patch to add support for caps under sysfs in powerpc: http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=297293 Patches 15 to 35 covers test related to group constraints and event codes. These new set of changes are added under new folder: "selftests/powerpc/pmu/event_code_tests" Patch 15 covers changes required for new folder with Makefile changes. The other patches add tests for perf interface to check the event group constraints, valid/invalid event codes, blacklisted events etc. Also add required utility functions under header file "misc.h" in sampling_tests folder. Patch 33 and 34 depend upon thresh_cmp group constraint fix patches sent in upstream mailing list. Link to the thresh_cmp fix patchset: http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=298742 Patch 13 of the patchset add selftest for mmcr1 pmcxsel/unit/cache fields, which was initially dropeed from sampling test patchset (patch number: 16) Link to the patch: http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20220127072012.662451-17-kj...@linux.ibm.com/ Changelog: v1 -> v2: Patch 12: Fixed bhrb_filter_map testcase to address build failure in distro like Ubuntu 16.04. This testcase uses perf branch sample types from include/uapi/linux/perf_event.h and three of the sample types are not defined in Ubuntu 16.04. Hence changed the logic to loop over values from PERF_SAMPLE_BRANCH_USER_SHIFT to PERF_SAMPLE_BRANCH_MAX_SHIFT as suggested by Michael Ellerman. Patch 2: The sampling_tests/misc.c used pmu_name for generic compat pmu as generic_compat_pmu. But latest version of patch to expose caps in powerpc will use power_pmu->name. So change the pmu name in misc code as GENERIC_COMPAT ( which is what pmu->name uses in driver code). Link to linuxppc-ci: https://github.com/athira-rajeev/linux-ci/actions?query=branch%3Aselftest_v4_set2 Athira Rajeev (20): testing/selftests/powerpc: Add support to fetch "platform" and "base platform" from auxv to detect platform. selftest/powerpc/pmu: Refactor the platform check and add macros to find array size/PVR selftest/powerpc/pmu: Add selftest to check branch stack enablement will not crash on any platforms selftest/powerpc/pmu: Add selftest to check PERF_SAMPLE_REGS_INTR option will not crash on any platforms selftest/powerpc/pmu: Add selftest for checking valid and invalid bhrb filter maps selftest/powerpc/pmu: Add selftest for mmcr1 pmcxsel/unit/cache fields selftest/powerpc/pmu: Add support for perf event code tests selftest/powerpc/pmu: Add selftest for group constraint check for PMC5 and PMC6 selftest/powerpc/pmu: Add selftest to check PMC5/6 is excluded from some constraint checks selftest/powerpc/pmu: Add selftest to check constraint for number of counters in use. selftest/powerpc/pmu: Add selftest for group constraint check when using same PMC selftest/powerpc/pmu: Add selftest for group constraint check for radix_scope_qual field selftest/powerpc/pmu: Add selftest for group constraint for MMCRA Sampling Mode field selftest/powerpc/pmu: Add selftest for group constraint check MMCRA sample bits selftest/powerpc/pmu: Add selftest for checking invalid bits in event code selftest/powerpc/pmu: Add selftest for reserved bit check for MMCRA thresh_ctl field selftest/powerpc/pmu: Add selftest for blacklist events check in power9 selftest/powerpc/pmu: Add selftest for event alternatives for power9 selftest/powerpc/pmu: Add selftest for event alternatives for power10 selftest/powerpc/pmu: Add selftest for PERF_TYPE_HARDWARE events valid check Kajol Jain (15): selftest/powerpc/pmu: Add mask/shift bits for extracting threshold compare field selftest/powerpc/pmu: Add interface test for mmcra_thresh_cmp fields selftest/powerpc/pmu: Add support for branch sampling in get_intr_regs function selftest/powerpc/pmu: Add interface test for mmcra_ifm field of indirect call type selftest/powerpc/pmu: Add interface test for mmcra_ifm field for any branch type selftest/powerpc/pmu: Add interface test for mmcra_ifm field for conditional branch type selftest/powerpc/pmu: Add interface test for bhrb disable field selftest/powerpc/pmu: Add interface test for bhrb disable field for non-branch samples selftest/powerpc/pmu: Add selftest for group constraint check for MMCR0 l2l3_sel bits selftest/powerpc/pmu: Add selftest for group constraint check for MMCR1 cache bits selftest/powerpc/pmu: Add selftest for group constraint check for MMCRA thresh_cmp field selftest/powerpc/pmu: Add selftest for group constraint for unit and pmc field in p9 selftest/powerpc/pmu: Add selftest for group constraint check for MMCRA thresh_ctl field selftest/powerpc/pmu: Add selftest for group constraint check for MMCRA thresh_sel field selftest/powerpc/pmu: Add test for hardware cache events tools/testing/selftests/powerpc/include/reg.h | 4 + .../testing/selftests/powerpc/include/utils.h | 10 ++ tools/testing/selftests/powerpc/pmu/Makefile | 11 +- .../selftests/powerpc/pmu/branch_loops.S | 28 ++++ .../powerpc/pmu/event_code_tests/Makefile | 15 ++ .../blacklisted_events_test.c | 132 +++++++++++++++++ .../event_alternatives_tests_p10.c | 109 ++++++++++++++ .../event_alternatives_tests_p9.c | 116 +++++++++++++++ .../generic_events_valid_test.c | 130 +++++++++++++++++ .../group_constraint_cache_test.c | 60 ++++++++ .../group_constraint_l2l3_sel_test.c | 64 +++++++++ .../group_constraint_mmcra_sample_test.c | 54 +++++++ .../group_constraint_pmc56_test.c | 63 ++++++++ .../group_constraint_pmc_count_test.c | 70 +++++++++ .../group_constraint_radix_scope_qual_test.c | 56 ++++++++ .../group_constraint_repeat_test.c | 56 ++++++++ .../group_constraint_thresh_cmp_test.c | 96 +++++++++++++ .../group_constraint_thresh_ctl_test.c | 64 +++++++++ .../group_constraint_thresh_sel_test.c | 63 ++++++++ .../group_constraint_unit_test.c | 74 ++++++++++ .../group_pmc56_exclude_constraints_test.c | 64 +++++++++ .../hw_cache_event_type_test.c | 88 ++++++++++++ .../invalid_event_code_test.c | 67 +++++++++ ...eserved_bits_mmcra_sample_elig_mode_test.c | 77 ++++++++++ .../reserved_bits_mmcra_thresh_ctl_test.c | 44 ++++++ .../powerpc/pmu/sampling_tests/Makefile | 7 +- .../pmu/sampling_tests/bhrb_filter_map_test.c | 105 ++++++++++++++ .../bhrb_no_crash_wo_pmu_test.c | 59 ++++++++ .../intr_regs_no_crash_wo_pmu_test.c | 57 ++++++++ .../powerpc/pmu/sampling_tests/misc.c | 135 +++++++++++++++++- .../powerpc/pmu/sampling_tests/misc.h | 9 +- .../mmcr1_sel_unit_cache_test.c | 77 ++++++++++ .../pmu/sampling_tests/mmcra_bhrb_any_test.c | 65 +++++++++ .../pmu/sampling_tests/mmcra_bhrb_cond_test.c | 69 +++++++++ .../mmcra_bhrb_disable_no_branch_test.c | 64 +++++++++ .../sampling_tests/mmcra_bhrb_disable_test.c | 66 +++++++++ .../sampling_tests/mmcra_bhrb_ind_call_test.c | 69 +++++++++ .../sampling_tests/mmcra_thresh_cmp_test.c | 74 ++++++++++ 38 files changed, 2461 insertions(+), 10 deletions(-) create mode 100644 tools/testing/selftests/powerpc/pmu/branch_loops.S create mode 100644 tools/testing/selftests/powerpc/pmu/event_code_tests/Makefile create mode 100644 tools/testing/selftests/powerpc/pmu/event_code_tests/blacklisted_events_test.c create mode 100644 tools/testing/selftests/powerpc/pmu/event_code_tests/event_alternatives_tests_p10.c create mode 100644 tools/testing/selftests/powerpc/pmu/event_code_tests/event_alternatives_tests_p9.c create mode 100644 tools/testing/selftests/powerpc/pmu/event_code_tests/generic_events_valid_test.c create mode 100644 tools/testing/selftests/powerpc/pmu/event_code_tests/group_constraint_cache_test.c create mode 100644 tools/testing/selftests/powerpc/pmu/event_code_tests/group_constraint_l2l3_sel_test.c create mode 100644 tools/testing/selftests/powerpc/pmu/event_code_tests/group_constraint_mmcra_sample_test.c create mode 100644 tools/testing/selftests/powerpc/pmu/event_code_tests/group_constraint_pmc56_test.c create mode 100644 tools/testing/selftests/powerpc/pmu/event_code_tests/group_constraint_pmc_count_test.c create mode 100644 tools/testing/selftests/powerpc/pmu/event_code_tests/group_constraint_radix_scope_qual_test.c create mode 100644 tools/testing/selftests/powerpc/pmu/event_code_tests/group_constraint_repeat_test.c create mode 100644 tools/testing/selftests/powerpc/pmu/event_code_tests/group_constraint_thresh_cmp_test.c create mode 100644 tools/testing/selftests/powerpc/pmu/event_code_tests/group_constraint_thresh_ctl_test.c create mode 100644 tools/testing/selftests/powerpc/pmu/event_code_tests/group_constraint_thresh_sel_test.c create mode 100644 tools/testing/selftests/powerpc/pmu/event_code_tests/group_constraint_unit_test.c create mode 100644 tools/testing/selftests/powerpc/pmu/event_code_tests/group_pmc56_exclude_constraints_test.c create mode 100644 tools/testing/selftests/powerpc/pmu/event_code_tests/hw_cache_event_type_test.c create mode 100644 tools/testing/selftests/powerpc/pmu/event_code_tests/invalid_event_code_test.c create mode 100644 tools/testing/selftests/powerpc/pmu/event_code_tests/reserved_bits_mmcra_sample_elig_mode_test.c create mode 100644 tools/testing/selftests/powerpc/pmu/event_code_tests/reserved_bits_mmcra_thresh_ctl_test.c create mode 100644 tools/testing/selftests/powerpc/pmu/sampling_tests/bhrb_filter_map_test.c create mode 100644 tools/testing/selftests/powerpc/pmu/sampling_tests/bhrb_no_crash_wo_pmu_test.c create mode 100644 tools/testing/selftests/powerpc/pmu/sampling_tests/intr_regs_no_crash_wo_pmu_test.c create mode 100644 tools/testing/selftests/powerpc/pmu/sampling_tests/mmcr1_sel_unit_cache_test.c create mode 100644 tools/testing/selftests/powerpc/pmu/sampling_tests/mmcra_bhrb_any_test.c create mode 100644 tools/testing/selftests/powerpc/pmu/sampling_tests/mmcra_bhrb_cond_test.c create mode 100644 tools/testing/selftests/powerpc/pmu/sampling_tests/mmcra_bhrb_disable_no_branch_test.c create mode 100644 tools/testing/selftests/powerpc/pmu/sampling_tests/mmcra_bhrb_disable_test.c create mode 100644 tools/testing/selftests/powerpc/pmu/sampling_tests/mmcra_bhrb_ind_call_test.c create mode 100644 tools/testing/selftests/powerpc/pmu/sampling_tests/mmcra_thresh_cmp_test.c -- 2.35.1
