Adrian Hunter | 5efb1d5 | 2015-07-17 19:33:42 +0300 | [diff] [blame] | 1 | /* |
| 2 | * auxtrace.c: AUX area tracing support |
| 3 | * Copyright (c) 2013-2014, Intel Corporation. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify it |
| 6 | * under the terms and conditions of the GNU General Public License, |
| 7 | * version 2, as published by the Free Software Foundation. |
| 8 | * |
| 9 | * This program is distributed in the hope it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 12 | * more details. |
| 13 | * |
| 14 | */ |
| 15 | |
Adrian Hunter | d0170af | 2015-07-17 19:33:43 +0300 | [diff] [blame] | 16 | #include <stdbool.h> |
| 17 | |
Adrian Hunter | 5efb1d5 | 2015-07-17 19:33:42 +0300 | [diff] [blame] | 18 | #include "../../util/header.h" |
Adrian Hunter | d0170af | 2015-07-17 19:33:43 +0300 | [diff] [blame] | 19 | #include "../../util/debug.h" |
| 20 | #include "../../util/pmu.h" |
Adrian Hunter | 5efb1d5 | 2015-07-17 19:33:42 +0300 | [diff] [blame] | 21 | #include "../../util/auxtrace.h" |
| 22 | #include "../../util/intel-pt.h" |
Adrian Hunter | d0170af | 2015-07-17 19:33:43 +0300 | [diff] [blame] | 23 | #include "../../util/intel-bts.h" |
| 24 | #include "../../util/evlist.h" |
Adrian Hunter | 5efb1d5 | 2015-07-17 19:33:42 +0300 | [diff] [blame] | 25 | |
Adrian Hunter | d0170af | 2015-07-17 19:33:43 +0300 | [diff] [blame] | 26 | static |
| 27 | struct auxtrace_record *auxtrace_record__init_intel(struct perf_evlist *evlist, |
| 28 | int *err) |
| 29 | { |
| 30 | struct perf_pmu *intel_pt_pmu; |
| 31 | struct perf_pmu *intel_bts_pmu; |
| 32 | struct perf_evsel *evsel; |
| 33 | bool found_pt = false; |
| 34 | bool found_bts = false; |
| 35 | |
| 36 | intel_pt_pmu = perf_pmu__find(INTEL_PT_PMU_NAME); |
| 37 | intel_bts_pmu = perf_pmu__find(INTEL_BTS_PMU_NAME); |
| 38 | |
| 39 | if (evlist) { |
| 40 | evlist__for_each(evlist, evsel) { |
| 41 | if (intel_pt_pmu && |
| 42 | evsel->attr.type == intel_pt_pmu->type) |
| 43 | found_pt = true; |
| 44 | if (intel_bts_pmu && |
| 45 | evsel->attr.type == intel_bts_pmu->type) |
| 46 | found_bts = true; |
| 47 | } |
| 48 | } |
| 49 | |
| 50 | if (found_pt && found_bts) { |
| 51 | pr_err("intel_pt and intel_bts may not be used together\n"); |
| 52 | *err = -EINVAL; |
| 53 | return NULL; |
| 54 | } |
| 55 | |
| 56 | if (found_pt) |
| 57 | return intel_pt_recording_init(err); |
| 58 | |
| 59 | if (found_bts) |
| 60 | return intel_bts_recording_init(err); |
| 61 | |
| 62 | return NULL; |
| 63 | } |
| 64 | |
| 65 | struct auxtrace_record *auxtrace_record__init(struct perf_evlist *evlist, |
Adrian Hunter | 5efb1d5 | 2015-07-17 19:33:42 +0300 | [diff] [blame] | 66 | int *err) |
| 67 | { |
| 68 | char buffer[64]; |
| 69 | int ret; |
| 70 | |
| 71 | *err = 0; |
| 72 | |
| 73 | ret = get_cpuid(buffer, sizeof(buffer)); |
| 74 | if (ret) { |
| 75 | *err = ret; |
| 76 | return NULL; |
| 77 | } |
| 78 | |
| 79 | if (!strncmp(buffer, "GenuineIntel,", 13)) |
Adrian Hunter | d0170af | 2015-07-17 19:33:43 +0300 | [diff] [blame] | 80 | return auxtrace_record__init_intel(evlist, err); |
Adrian Hunter | 5efb1d5 | 2015-07-17 19:33:42 +0300 | [diff] [blame] | 81 | |
| 82 | return NULL; |
| 83 | } |