81 lines
1.9 KiB
C
81 lines
1.9 KiB
C
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/*
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* auxtrace.c: AUX area tracing support
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* Copyright (c) 2013-2014, Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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*/
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#include <errno.h>
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#include <stdbool.h>
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#include "../../util/header.h"
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#include "../../util/debug.h"
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#include "../../util/pmu.h"
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#include "../../util/auxtrace.h"
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#include "../../util/intel-pt.h"
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#include "../../util/intel-bts.h"
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#include "../../util/evlist.h"
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static
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struct auxtrace_record *auxtrace_record__init_intel(struct perf_evlist *evlist,
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int *err)
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{
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struct perf_pmu *intel_pt_pmu;
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struct perf_pmu *intel_bts_pmu;
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struct perf_evsel *evsel;
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bool found_pt = false;
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bool found_bts = false;
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intel_pt_pmu = perf_pmu__find(INTEL_PT_PMU_NAME);
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intel_bts_pmu = perf_pmu__find(INTEL_BTS_PMU_NAME);
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evlist__for_each_entry(evlist, evsel) {
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if (intel_pt_pmu && evsel->attr.type == intel_pt_pmu->type)
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found_pt = true;
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if (intel_bts_pmu && evsel->attr.type == intel_bts_pmu->type)
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found_bts = true;
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}
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if (found_pt && found_bts) {
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pr_err("intel_pt and intel_bts may not be used together\n");
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*err = -EINVAL;
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return NULL;
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}
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if (found_pt)
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return intel_pt_recording_init(err);
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if (found_bts)
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return intel_bts_recording_init(err);
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return NULL;
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}
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struct auxtrace_record *auxtrace_record__init(struct perf_evlist *evlist,
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int *err)
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{
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char buffer[64];
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int ret;
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*err = 0;
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ret = get_cpuid(buffer, sizeof(buffer));
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if (ret) {
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*err = ret;
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return NULL;
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}
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if (!strncmp(buffer, "GenuineIntel,", 13))
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return auxtrace_record__init_intel(evlist, err);
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return NULL;
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}
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