diff options
Diffstat (limited to 'tools')
3 files changed, 61 insertions, 1 deletions
diff --git a/tools/testing/selftests/powerpc/pmu/sampling_tests/.gitignore b/tools/testing/selftests/powerpc/pmu/sampling_tests/.gitignore index 0bc68fed074d..3229f088f542 100644 --- a/tools/testing/selftests/powerpc/pmu/sampling_tests/.gitignore +++ b/tools/testing/selftests/powerpc/pmu/sampling_tests/.gitignore @@ -2,3 +2,4 @@ mmcr0_exceptionbits_test mmcr0_cc56run_test mmcr0_pmccext_test mmcr0_pmcjce_test +mmcr0_fc56_pmc1ce_test diff --git a/tools/testing/selftests/powerpc/pmu/sampling_tests/Makefile b/tools/testing/selftests/powerpc/pmu/sampling_tests/Makefile index 28029c0f1399..b6bc066e5047 100644 --- a/tools/testing/selftests/powerpc/pmu/sampling_tests/Makefile +++ b/tools/testing/selftests/powerpc/pmu/sampling_tests/Makefile @@ -2,7 +2,7 @@ CFLAGS += -m64 TEST_GEN_PROGS := mmcr0_exceptionbits_test mmcr0_cc56run_test mmcr0_pmccext_test \ - mmcr0_pmcjce_test + mmcr0_pmcjce_test mmcr0_fc56_pmc1ce_test top_srcdir = ../../../../../.. include ../../../lib.mk diff --git a/tools/testing/selftests/powerpc/pmu/sampling_tests/mmcr0_fc56_pmc1ce_test.c b/tools/testing/selftests/powerpc/pmu/sampling_tests/mmcr0_fc56_pmc1ce_test.c new file mode 100644 index 000000000000..1c1813c182c0 --- /dev/null +++ b/tools/testing/selftests/powerpc/pmu/sampling_tests/mmcr0_fc56_pmc1ce_test.c @@ -0,0 +1,59 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright 2022, Athira Rajeev, IBM Corp. + */ + +#include <stdio.h> +#include <stdlib.h> + +#include "../event.h" +#include "misc.h" +#include "utils.h" + +extern void thirty_two_instruction_loop(int loops); + +/* + * A perf sampling test for mmcr0 + * fields: fc56, pmc1ce. + */ +static int mmcr0_fc56_pmc1ce(void) +{ + struct event event; + u64 *intr_regs; + + /* Check for platform support for the test */ + SKIP_IF(check_pvr_for_sampling_tests()); + + /* Init the event for the sampling test */ + event_init_sampling(&event, 0x1001e); + event.attr.sample_regs_intr = platform_extended_mask; + FAIL_IF(event_open(&event)); + event.mmap_buffer = event_sample_buf_mmap(event.fd, 1); + + FAIL_IF(event_enable(&event)); + + /* workload to make the event overflow */ + thirty_two_instruction_loop(10000); + + FAIL_IF(event_disable(&event)); + + /* Check for sample count */ + FAIL_IF(!collect_samples(event.mmap_buffer)); + + intr_regs = get_intr_regs(&event, event.mmap_buffer); + + /* Check for intr_regs */ + FAIL_IF(!intr_regs); + + /* Verify that fc56, pmc1ce fields are set in MMCR0 */ + FAIL_IF(!get_mmcr0_fc56(get_reg_value(intr_regs, "MMCR0"), 1)); + FAIL_IF(!get_mmcr0_pmc1ce(get_reg_value(intr_regs, "MMCR0"), 1)); + + event_close(&event); + return 0; +} + +int main(void) +{ + return test_harness(mmcr0_fc56_pmc1ce, "mmcr0_fc56_pmc1ce"); +} |