From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- .../selftests/powerpc/pmu/ebb/cycles_test.c | 58 ++++++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c (limited to 'tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c') diff --git a/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c b/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c new file mode 100644 index 000000000..bb9f587fa --- /dev/null +++ b/tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c @@ -0,0 +1,58 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright 2014, Michael Ellerman, IBM Corp. + */ + +#include +#include + +#include "ebb.h" + + +/* + * Basic test that counts user cycles and takes EBBs. + */ +int cycles(void) +{ + struct event event; + + SKIP_IF(!ebb_is_supported()); + + event_init_named(&event, 0x1001e, "cycles"); + event_leader_ebb_init(&event); + + event.attr.exclude_kernel = 1; + event.attr.exclude_hv = 1; + event.attr.exclude_idle = 1; + + FAIL_IF(event_open(&event)); + + ebb_enable_pmc_counting(1); + setup_ebb_handler(standard_ebb_callee); + ebb_global_enable(); + FAIL_IF(ebb_event_enable(&event)); + + mtspr(SPRN_PMC1, pmc_sample_period(sample_period)); + + while (ebb_state.stats.ebb_count < 10) { + FAIL_IF(core_busy_loop()); + FAIL_IF(ebb_check_mmcr0()); + } + + ebb_global_disable(); + ebb_freeze_pmcs(); + + dump_ebb_state(); + + event_close(&event); + + FAIL_IF(ebb_state.stats.ebb_count == 0); + FAIL_IF(!ebb_check_count(1, sample_period, 100)); + + return 0; +} + +int main(void) +{ + return test_harness(cycles, "cycles"); +} -- cgit v1.2.3