| /* |
| * 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; |
| } |