1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * Copyright 2014, Michael Ellerman, IBM Corp. |
4 | */ |
5 | |
6 | #include <stdio.h> |
7 | #include <stdlib.h> |
8 | #include <sys/ioctl.h> |
9 | |
10 | #include "ebb.h" |
11 | |
12 | |
13 | /* |
14 | * Test counting multiple events using EBBs. |
15 | */ |
16 | int multi_counter(void) |
17 | { |
18 | struct event events[6]; |
19 | int i, group_fd; |
20 | |
21 | SKIP_IF(!ebb_is_supported()); |
22 | |
23 | event_init_named(e: &events[0], config: 0x1001C, name: "PM_CMPLU_STALL_THRD" ); |
24 | event_init_named(e: &events[1], config: 0x2D016, name: "PM_CMPLU_STALL_FXU" ); |
25 | event_init_named(e: &events[2], config: 0x30006, name: "PM_CMPLU_STALL_OTHER_CMPL" ); |
26 | event_init_named(e: &events[3], config: 0x4000A, name: "PM_CMPLU_STALL" ); |
27 | event_init_named(e: &events[4], config: 0x600f4, name: "PM_RUN_CYC" ); |
28 | event_init_named(e: &events[5], config: 0x500fa, name: "PM_RUN_INST_CMPL" ); |
29 | |
30 | event_leader_ebb_init(e: &events[0]); |
31 | for (i = 1; i < 6; i++) |
32 | event_ebb_init(e: &events[i]); |
33 | |
34 | group_fd = -1; |
35 | for (i = 0; i < 6; i++) { |
36 | events[i].attr.exclude_kernel = 1; |
37 | events[i].attr.exclude_hv = 1; |
38 | events[i].attr.exclude_idle = 1; |
39 | |
40 | FAIL_IF(event_open_with_group(e: &events[i], group_fd)); |
41 | if (group_fd == -1) |
42 | group_fd = events[0].fd; |
43 | } |
44 | |
45 | ebb_enable_pmc_counting(pmc: 1); |
46 | ebb_enable_pmc_counting(pmc: 2); |
47 | ebb_enable_pmc_counting(pmc: 3); |
48 | ebb_enable_pmc_counting(pmc: 4); |
49 | ebb_enable_pmc_counting(pmc: 5); |
50 | ebb_enable_pmc_counting(pmc: 6); |
51 | setup_ebb_handler(standard_ebb_callee); |
52 | |
53 | FAIL_IF(ioctl(events[0].fd, PERF_EVENT_IOC_ENABLE, PERF_IOC_FLAG_GROUP)); |
54 | FAIL_IF(event_read(e: &events[0])); |
55 | |
56 | ebb_global_enable(); |
57 | |
58 | mtspr(SPRN_PMC1, pmc_sample_period(value: sample_period)); |
59 | mtspr(SPRN_PMC2, pmc_sample_period(value: sample_period)); |
60 | mtspr(SPRN_PMC3, pmc_sample_period(value: sample_period)); |
61 | mtspr(SPRN_PMC4, pmc_sample_period(value: sample_period)); |
62 | mtspr(SPRN_PMC5, pmc_sample_period(value: sample_period)); |
63 | mtspr(SPRN_PMC6, pmc_sample_period(value: sample_period)); |
64 | |
65 | while (ebb_state.stats.ebb_count < 50) { |
66 | FAIL_IF(core_busy_loop()); |
67 | FAIL_IF(ebb_check_mmcr0()); |
68 | } |
69 | |
70 | ebb_global_disable(); |
71 | ebb_freeze_pmcs(); |
72 | |
73 | dump_ebb_state(); |
74 | |
75 | for (i = 0; i < 6; i++) |
76 | event_close(e: &events[i]); |
77 | |
78 | FAIL_IF(ebb_state.stats.ebb_count == 0); |
79 | |
80 | return 0; |
81 | } |
82 | |
83 | int main(void) |
84 | { |
85 | return test_harness(multi_counter, "multi_counter" ); |
86 | } |
87 | |