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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright 2022, Athira Rajeev, IBM Corp.
*/
#include <stdio.h>
#include <stdlib.h>
#include "../event.h"
#include "misc.h"
#include "utils.h"
extern void thirty_two_instruction_loop(int loops);
/*
* A perf sampling test for mmcr0
* field: pmccext
*/
static int mmcr0_pmccext(void)
{
struct event event;
u64 *intr_regs;
/* Check for platform support for the test */
SKIP_IF(check_pvr_for_sampling_tests());
SKIP_IF(!have_hwcap2(PPC_FEATURE2_ARCH_3_1));
/* Init the event for the sampling test */
event_init_sampling(&event, 0x4001e);
event.attr.sample_regs_intr = platform_extended_mask;
FAIL_IF(event_open(&event));
event.mmap_buffer = event_sample_buf_mmap(event.fd, 1);
FAIL_IF(event_enable(&event));
/* workload to make the event overflow */
thirty_two_instruction_loop(10000);
FAIL_IF(event_disable(&event));
/* Check for sample count */
FAIL_IF(!collect_samples(event.mmap_buffer));
intr_regs = get_intr_regs(&event, event.mmap_buffer);
/* Check for intr_regs */
FAIL_IF(!intr_regs);
/* Verify that pmccext field is set in MMCR0 */
FAIL_IF(!get_mmcr0_pmccext(get_reg_value(intr_regs, "MMCR0"), 4));
event_close(&event);
return 0;
}
int main(void)
{
return test_harness(mmcr0_pmccext, "mmcr0_pmccext");
}
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