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6faa26ca JD |
1 | /* |
2 | * Copyright (c) 2016 Julien Desfossez <jdesfossez@efficios.com> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * as published by the Free Software Foundation; only version 2 | |
7 | * of the License. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along | |
15 | * with this program; if not, write to the Free Software Foundation, Inc., | |
16 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
17 | */ | |
18 | ||
19 | #include <stdio.h> | |
20 | #include <perfmon/pfmlib.h> | |
21 | #include <string.h> | |
22 | ||
23 | int main(int argc, char **argv) | |
24 | { | |
25 | int ret, i; | |
26 | unsigned int j; | |
27 | pfm_pmu_info_t pinfo; | |
28 | ||
29 | if (argc != 2) { | |
30 | fprintf(stderr, "Usage: %s <pmu counter to find>\n" | |
31 | "ex: %s UNHALTED_REFERENCE_CYCLES\n" | |
32 | "Returns the first occurence it finds with " | |
33 | "return code 0.\n" | |
34 | "If not found returns 1, on error returns -1\n", | |
35 | argv[0], argv[0]); | |
36 | ret = -1; | |
37 | goto end; | |
38 | } | |
39 | ||
40 | memset(&pinfo, 0, sizeof(pinfo)); | |
41 | pinfo.size = sizeof(pinfo); | |
42 | ||
43 | ret = pfm_initialize(); | |
44 | if (ret != PFM_SUCCESS) { | |
45 | fprintf(stderr, "Failed to initialise libpfm: %s", | |
46 | pfm_strerror(ret)); | |
47 | ret = -1; | |
48 | goto end; | |
49 | } | |
50 | ||
51 | pfm_for_all_pmus(j) { | |
52 | ret = pfm_get_pmu_info(j, &pinfo); | |
53 | if (ret != PFM_SUCCESS) { | |
54 | continue; | |
55 | } | |
56 | ||
57 | for (i = pinfo.first_event; i != -1; i = pfm_get_event_next(i)) { | |
58 | pfm_event_info_t info = | |
59 | { .size = sizeof(pfm_event_info_t) }; | |
60 | ||
61 | ret = pfm_get_event_info(i, PFM_OS_NONE, &info); | |
62 | if (ret != PFM_SUCCESS) { | |
63 | fprintf(stderr, "Cannot get event info: %s\n", | |
64 | pfm_strerror(ret)); | |
65 | ret = -1; | |
66 | goto end; | |
67 | } | |
68 | ||
69 | if (info.pmu != j) { | |
70 | continue; | |
71 | } | |
72 | ||
73 | if (strcmp(info.name, argv[1]) == 0) { | |
74 | fprintf(stdout, "r%" PRIx64 "\n", info.code); | |
75 | ret = 0; | |
76 | goto end; | |
77 | } | |
78 | } | |
79 | } | |
80 | ||
81 | ret = 1; | |
82 | ||
83 | end: | |
84 | return ret; | |
85 | } |