/*
 * auxtrace.c: AUX area tracing support
 * Copyright (c) 2013-2014, Intel Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope 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.
 *
 */

#include <stdbool.h>

#include "../../util/header.h"
#include "../../util/debug.h"
#include "../../util/pmu.h"
#include "../../util/auxtrace.h"
#include "../../util/intel-pt.h"
#include "../../util/intel-bts.h"
#include "../../util/evlist.h"

static
struct auxtrace_record *auxtrace_record__init_intel(struct perf_evlist *evlist,
						    int *err)
{
	struct perf_pmu *intel_pt_pmu;
	struct perf_pmu *intel_bts_pmu;
	struct perf_evsel *evsel;
	bool found_pt = false;
	bool found_bts = false;

	intel_pt_pmu = perf_pmu__find(INTEL_PT_PMU_NAME);
	intel_bts_pmu = perf_pmu__find(INTEL_BTS_PMU_NAME);

	if (evlist) {
		evlist__for_each_entry(evlist, evsel) {
			if (intel_pt_pmu &&
			    evsel->attr.type == intel_pt_pmu->type)
				found_pt = true;
			if (intel_bts_pmu &&
			    evsel->attr.type == intel_bts_pmu->type)
				found_bts = true;
		}
	}

	if (found_pt && found_bts) {
		pr_err("intel_pt and intel_bts may not be used together\n");
		*err = -EINVAL;
		return NULL;
	}

	if (found_pt)
		return intel_pt_recording_init(err);

	if (found_bts)
		return intel_bts_recording_init(err);

	return NULL;
}

struct auxtrace_record *auxtrace_record__init(struct perf_evlist *evlist,
					      int *err)
{
	char buffer[64];
	int ret;

	*err = 0;

	ret = get_cpuid(buffer, sizeof(buffer));
	if (ret) {
		*err = ret;
		return NULL;
	}

	if (!strncmp(buffer, "GenuineIntel,", 13))
		return auxtrace_record__init_intel(evlist, err);

	return NULL;
}
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=1001354ca34179f3db924eb66672442a173147dc'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools?id=1001354ca34179f3db924eb66672442a173147dc'>tools</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/perf?id=1001354ca34179f3db924eb66672442a173147dc'>perf</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/arch?id=1001354ca34179f3db924eb66672442a173147dc'>arch</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/arch/s390?id=1001354ca34179f3db924eb66672442a173147dc'>s390</a>/<a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/arch/s390/Build?id=1001354ca34179f3db924eb66672442a173147dc'>Build</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='1001354ca34179f3db924eb66672442a173147dc'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2016-10-15 12:17:50 -0700</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2016-10-15 12:17:50 -0700</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/arch/s390/Build?id=1001354ca34179f3db924eb66672442a173147dc'>1001354ca34179f3db924eb66672442a173147dc</a> (<a href='/cgit.cgi/linux/net-next.git/patch/tools/perf/arch/s390/Build?id=1001354ca34179f3db924eb66672442a173147dc'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=1001354ca34179f3db924eb66672442a173147dc'>000de57080b6bece6d336bc8c9d377a59b8129c9</a> /<a href='/cgit.cgi/linux/net-next.git/tree/tools/perf/arch/s390/Build?id=1001354ca34179f3db924eb66672442a173147dc'>tools/perf/arch/s390/Build</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/arch/s390/Build?id=df34d04a6f09ba41037e58c3df6d6fbed0ffcde9'>df34d04a6f09ba41037e58c3df6d6fbed0ffcde9</a> (<a href='/cgit.cgi/linux/net-next.git/diff/tools/perf/arch/s390/Build?id=1001354ca34179f3db924eb66672442a173147dc&amp;id2=df34d04a6f09ba41037e58c3df6d6fbed0ffcde9'>diff</a>)</td></tr></table>
<div class='commit-subject'>Linux 4.9-rc1</div><div class='commit-msg'></div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=1001354ca34179f3db924eb66672442a173147dc'>Diffstat</a> (limited to 'tools/perf/arch/s390/Build')</div><table summary='diffstat' class='diffstat'>