blob: 8edf2cb71564f6684755e19dff3ae1829ac3e9c3 [file] [log] [blame]
* Copyright(C) 2015 Linaro Limited. All rights reserved.
* Author: Mathieu Poirier <>
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <>.
#include <stdbool.h>
#include <linux/coresight-pmu.h>
#include "../../util/auxtrace.h"
#include "../../util/evlist.h"
#include "../../util/pmu.h"
#include "cs-etm.h"
struct auxtrace_record
*auxtrace_record__init(struct perf_evlist *evlist, int *err)
struct perf_pmu *cs_etm_pmu;
struct perf_evsel *evsel;
bool found_etm = false;
cs_etm_pmu = perf_pmu__find(CORESIGHT_ETM_PMU_NAME);
if (evlist) {
evlist__for_each_entry(evlist, evsel) {
if (cs_etm_pmu &&
evsel->attr.type == cs_etm_pmu->type)
found_etm = true;
if (found_etm)
return cs_etm_record_init(err);
* Clear 'err' even if we haven't found a cs_etm event - that way perf
* record can still be used even if tracers aren't present. The NULL
* return value will take care of telling the infrastructure HW tracing
* isn't available.
*err = 0;
return NULL;