/*
 * Copyright(C) 2015 Linaro Limited. All rights reserved.
 * Author: Mathieu Poirier <mathieu.poirier@linaro.org>
 *
 * 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 <http://www.gnu.org/licenses/>.
 */

#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;
}
f503d0a526c2b1f647ad562f9cf9dd5'>refs</a><a class='active' href='/cgit.cgi/linux/net-next.git/log/net/packet/Kconfig'>log</a><a href='/cgit.cgi/linux/net-next.git/tree/net/packet/Kconfig?id=b45242c99f503d0a526c2b1f647ad562f9cf9dd5'>tree</a><a href='/cgit.cgi/linux/net-next.git/commit/net/packet/Kconfig?id=b45242c99f503d0a526c2b1f647ad562f9cf9dd5'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/net/packet/Kconfig?id=b45242c99f503d0a526c2b1f647ad562f9cf9dd5'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/net/packet/Kconfig'>
<input type='hidden' name='id' value='b45242c99f503d0a526c2b1f647ad562f9cf9dd5'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?id=b45242c99f503d0a526c2b1f647ad562f9cf9dd5'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/net?id=b45242c99f503d0a526c2b1f647ad562f9cf9dd5'>net</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/packet?id=b45242c99f503d0a526c2b1f647ad562f9cf9dd5'>packet</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/packet/Kconfig?id=b45242c99f503d0a526c2b1f647ad562f9cf9dd5'>Kconfig</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/net/packet/Kconfig?id=b45242c99f503d0a526c2b1f647ad562f9cf9dd5&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>