// 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");
}