12025cf9eSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only
25efb1d54SAdrian Hunter /*
35efb1d54SAdrian Hunter * auxtrace.c: AUX area tracing support
45efb1d54SAdrian Hunter * Copyright (c) 2013-2014, Intel Corporation.
55efb1d54SAdrian Hunter */
65efb1d54SAdrian Hunter
7a43783aeSArnaldo Carvalho de Melo #include <errno.h>
8d0170af7SAdrian Hunter #include <stdbool.h>
9d0170af7SAdrian Hunter
10441b62acSIan Rogers #include "../../../util/header.h"
11441b62acSIan Rogers #include "../../../util/debug.h"
12441b62acSIan Rogers #include "../../../util/pmu.h"
13*1eaf496eSIan Rogers #include "../../../util/pmus.h"
14441b62acSIan Rogers #include "../../../util/auxtrace.h"
15441b62acSIan Rogers #include "../../../util/intel-pt.h"
16441b62acSIan Rogers #include "../../../util/intel-bts.h"
17441b62acSIan Rogers #include "../../../util/evlist.h"
185efb1d54SAdrian Hunter
19d0170af7SAdrian Hunter static
auxtrace_record__init_intel(struct evlist * evlist,int * err)2063503dbaSJiri Olsa struct auxtrace_record *auxtrace_record__init_intel(struct evlist *evlist,
21d0170af7SAdrian Hunter int *err)
22d0170af7SAdrian Hunter {
23d0170af7SAdrian Hunter struct perf_pmu *intel_pt_pmu;
24d0170af7SAdrian Hunter struct perf_pmu *intel_bts_pmu;
2532dcd021SJiri Olsa struct evsel *evsel;
26d0170af7SAdrian Hunter bool found_pt = false;
27d0170af7SAdrian Hunter bool found_bts = false;
28d0170af7SAdrian Hunter
29*1eaf496eSIan Rogers intel_pt_pmu = perf_pmus__find(INTEL_PT_PMU_NAME);
30*1eaf496eSIan Rogers intel_bts_pmu = perf_pmus__find(INTEL_BTS_PMU_NAME);
31d0170af7SAdrian Hunter
32e5cadb93SArnaldo Carvalho de Melo evlist__for_each_entry(evlist, evsel) {
331fc632ceSJiri Olsa if (intel_pt_pmu && evsel->core.attr.type == intel_pt_pmu->type)
34d0170af7SAdrian Hunter found_pt = true;
351fc632ceSJiri Olsa if (intel_bts_pmu && evsel->core.attr.type == intel_bts_pmu->type)
36d0170af7SAdrian Hunter found_bts = true;
37d0170af7SAdrian Hunter }
38d0170af7SAdrian Hunter
39d0170af7SAdrian Hunter if (found_pt && found_bts) {
40d0170af7SAdrian Hunter pr_err("intel_pt and intel_bts may not be used together\n");
41d0170af7SAdrian Hunter *err = -EINVAL;
42d0170af7SAdrian Hunter return NULL;
43d0170af7SAdrian Hunter }
44d0170af7SAdrian Hunter
45d0170af7SAdrian Hunter if (found_pt)
46d0170af7SAdrian Hunter return intel_pt_recording_init(err);
47d0170af7SAdrian Hunter
48d0170af7SAdrian Hunter if (found_bts)
49d0170af7SAdrian Hunter return intel_bts_recording_init(err);
50d0170af7SAdrian Hunter
51d0170af7SAdrian Hunter return NULL;
52d0170af7SAdrian Hunter }
53d0170af7SAdrian Hunter
auxtrace_record__init(struct evlist * evlist,int * err)5463503dbaSJiri Olsa struct auxtrace_record *auxtrace_record__init(struct evlist *evlist,
555efb1d54SAdrian Hunter int *err)
565efb1d54SAdrian Hunter {
575efb1d54SAdrian Hunter char buffer[64];
585efb1d54SAdrian Hunter int ret;
595efb1d54SAdrian Hunter
605efb1d54SAdrian Hunter *err = 0;
615efb1d54SAdrian Hunter
625efb1d54SAdrian Hunter ret = get_cpuid(buffer, sizeof(buffer));
635efb1d54SAdrian Hunter if (ret) {
645efb1d54SAdrian Hunter *err = ret;
655efb1d54SAdrian Hunter return NULL;
665efb1d54SAdrian Hunter }
675efb1d54SAdrian Hunter
685efb1d54SAdrian Hunter if (!strncmp(buffer, "GenuineIntel,", 13))
69d0170af7SAdrian Hunter return auxtrace_record__init_intel(evlist, err);
705efb1d54SAdrian Hunter
715efb1d54SAdrian Hunter return NULL;
725efb1d54SAdrian Hunter }
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