root/tools/perf/arch/arm/util/pmu.c
// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright(C) 2015 Linaro Limited. All rights reserved.
 * Author: Mathieu Poirier <mathieu.poirier@linaro.org>
 */

#include <string.h>
#include <linux/coresight-pmu.h>
#include <linux/perf_event.h>
#include <linux/string.h>

#include "arm-spe.h"
#include "hisi-ptt.h"
#include "../../../util/cpumap.h"
#include "../../../util/pmu.h"
#include "../../../util/cs-etm.h"
#include "../../arm64/util/mem-events.h"

void perf_pmu__arch_init(struct perf_pmu *pmu)
{
        struct perf_cpu_map *intersect, *online = cpu_map__online();

        if (!strcmp(pmu->name, CORESIGHT_ETM_PMU_NAME)) {
                /* add ETM default config here */
                pmu->auxtrace = true;
                pmu->selectable = true;
                pmu->perf_event_attr_init_default = cs_etm_get_default_config;
#if defined(__aarch64__)
        } else if (strstarts(pmu->name, ARM_SPE_PMU_NAME)) {
                pmu->auxtrace = true;
                pmu->selectable = true;
                pmu->is_uncore = false;
                pmu->perf_event_attr_init_default = arm_spe_pmu_default_config;
                if (strstarts(pmu->name, "arm_spe_"))
                        pmu->mem_events = perf_mem_events_arm;
        } else if (strstarts(pmu->name, HISI_PTT_PMU_NAME)) {
                pmu->auxtrace = true;
                pmu->selectable = true;
#endif
        }
        /* Workaround some ARM PMU's failing to correctly set CPU maps for online processors. */
        intersect = perf_cpu_map__intersect(online, pmu->cpus);
        perf_cpu_map__put(online);
        perf_cpu_map__put(pmu->cpus);
        pmu->cpus = intersect;
}