1// SPDX-License-Identifier: GPL-2.0
2#include "arch-tests.h"
3#include "linux/perf_event.h"
4#include "tests/tests.h"
5#include "pmu.h"
6#include "pmus.h"
7#include "../perf-sys.h"
8#include "debug.h"
9
10#define NR_SUB_TESTS 5
11
12static struct sub_tests {
13 int type;
14 unsigned long config;
15 bool valid;
16} sub_tests[NR_SUB_TESTS] = {
17 { PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES, true },
18 { PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS, false },
19 { PERF_TYPE_RAW, 0x076, true },
20 { PERF_TYPE_RAW, 0x0C1, true },
21 { PERF_TYPE_RAW, 0x012, false },
22};
23
24static int event_open(int type, unsigned long config)
25{
26 struct perf_event_attr attr;
27
28 memset(&attr, 0, sizeof(struct perf_event_attr));
29 attr.type = type;
30 attr.size = sizeof(struct perf_event_attr);
31 attr.config = config;
32 attr.disabled = 1;
33 attr.precise_ip = 1;
34 attr.sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_TID;
35 attr.sample_period = 100000;
36
37 return sys_perf_event_open(&attr, -1, 0, -1, 0);
38}
39
40int test__amd_ibs_via_core_pmu(struct test_suite *test __maybe_unused,
41 int subtest __maybe_unused)
42{
43 struct perf_pmu *ibs_pmu;
44 int ret = TEST_OK;
45 int fd, i;
46
47 ibs_pmu = perf_pmus__find("ibs_op");
48 if (!ibs_pmu)
49 return TEST_SKIP;
50
51 for (i = 0; i < NR_SUB_TESTS; i++) {
52 fd = event_open(type: sub_tests[i].type, config: sub_tests[i].config);
53 pr_debug("type: 0x%x, config: 0x%lx, fd: %d - ", sub_tests[i].type,
54 sub_tests[i].config, fd);
55 if ((sub_tests[i].valid && fd == -1) ||
56 (!sub_tests[i].valid && fd > 0)) {
57 pr_debug("Fail\n");
58 ret = TEST_FAIL;
59 } else {
60 pr_debug("Pass\n");
61 }
62
63 if (fd > 0)
64 close(fd);
65 }
66
67 return ret;
68}
69

source code of linux/tools/perf/arch/x86/tests/amd-ibs-via-core-pmu.c