xref: /openbmc/linux/tools/perf/arch/x86/util/auxtrace.c (revision 5efb1d54)
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 
16 #include "../../util/header.h"
17 #include "../../util/auxtrace.h"
18 #include "../../util/intel-pt.h"
19 
20 struct auxtrace_record *auxtrace_record__init(struct perf_evlist *evlist __maybe_unused,
21 					      int *err)
22 {
23 	char buffer[64];
24 	int ret;
25 
26 	*err = 0;
27 
28 	ret = get_cpuid(buffer, sizeof(buffer));
29 	if (ret) {
30 		*err = ret;
31 		return NULL;
32 	}
33 
34 	if (!strncmp(buffer, "GenuineIntel,", 13))
35 		return intel_pt_recording_init(err);
36 
37 	return NULL;
38 }
39