59 lines
1.0 KiB
C
59 lines
1.0 KiB
C
// 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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