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// 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();
count_pmc(1, sample_period);
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");
}
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