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58 lines
1.0 KiB
58 lines
1.0 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Copyright 2014, Michael Ellerman, IBM Corp. |
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*/ |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include "ebb.h" |
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/* |
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* Basic test that counts user cycles and takes EBBs. |
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*/ |
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int cycles(void) |
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{ |
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struct event event; |
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SKIP_IF(!ebb_is_supported()); |
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event_init_named(&event, 0x1001e, "cycles"); |
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event_leader_ebb_init(&event); |
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event.attr.exclude_kernel = 1; |
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event.attr.exclude_hv = 1; |
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event.attr.exclude_idle = 1; |
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FAIL_IF(event_open(&event)); |
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ebb_enable_pmc_counting(1); |
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setup_ebb_handler(standard_ebb_callee); |
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ebb_global_enable(); |
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FAIL_IF(ebb_event_enable(&event)); |
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mtspr(SPRN_PMC1, pmc_sample_period(sample_period)); |
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while (ebb_state.stats.ebb_count < 10) { |
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FAIL_IF(core_busy_loop()); |
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FAIL_IF(ebb_check_mmcr0()); |
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} |
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ebb_global_disable(); |
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ebb_freeze_pmcs(); |
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dump_ebb_state(); |
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event_close(&event); |
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FAIL_IF(ebb_state.stats.ebb_count == 0); |
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FAIL_IF(!ebb_check_count(1, sample_period, 100)); |
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return 0; |
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} |
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int main(void) |
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{ |
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return test_harness(cycles, "cycles"); |
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}
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