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 
12 static 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 
event_open(int type,unsigned long config)24 static 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 
test__amd_ibs_via_core_pmu(struct test_suite * test __maybe_unused,int subtest __maybe_unused)40 int 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(sub_tests[i].type, 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