diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c | |
parent | Initial commit. (diff) | |
download | linux-430c2fc249ea5c0536abd21c23382884005c9093.tar.xz linux-430c2fc249ea5c0536abd21c23382884005c9093.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c')
-rw-r--r-- | tools/testing/selftests/powerpc/pmu/ebb/cycles_test.c | 58 |
1 files changed, 58 insertions, 0 deletions
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 <stdio.h> +#include <stdlib.h> + +#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"); +} |