1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * Copyright 2022, Athira Rajeev, IBM Corp. |
4 | */ |
5 | |
6 | #include <stdio.h> |
7 | #include <stdlib.h> |
8 | |
9 | #include "../event.h" |
10 | #include "misc.h" |
11 | #include "utils.h" |
12 | |
13 | /* All successful D-side store dispatches for this thread that were L2 Miss */ |
14 | #define EventCode 0x46880 |
15 | |
16 | extern void thirty_two_instruction_loop_with_ll_sc(u64 loops, u64 *ll_sc_target); |
17 | |
18 | /* |
19 | * A perf sampling test for mmcr1 |
20 | * fields : comb. |
21 | */ |
22 | static int mmcr1_comb(void) |
23 | { |
24 | struct event event; |
25 | u64 *intr_regs; |
26 | u64 dummy; |
27 | |
28 | /* Check for platform support for the test */ |
29 | SKIP_IF(check_pvr_for_sampling_tests()); |
30 | |
31 | /* Init the event for the sampling test */ |
32 | event_init_sampling(e: &event, EventCode); |
33 | event.attr.sample_regs_intr = platform_extended_mask; |
34 | FAIL_IF(event_open(e: &event)); |
35 | event.mmap_buffer = event_sample_buf_mmap(fd: event.fd, mmap_pages: 1); |
36 | |
37 | FAIL_IF(event_enable(e: &event)); |
38 | |
39 | /* workload to make the event overflow */ |
40 | thirty_two_instruction_loop_with_ll_sc(loops: 10000000, ll_sc_target: &dummy); |
41 | |
42 | FAIL_IF(event_disable(e: &event)); |
43 | |
44 | /* Check for sample count */ |
45 | FAIL_IF(!collect_samples(sample_buff: event.mmap_buffer)); |
46 | |
47 | intr_regs = get_intr_regs(event: &event, sample_buff: event.mmap_buffer); |
48 | |
49 | /* Check for intr_regs */ |
50 | FAIL_IF(!intr_regs); |
51 | |
52 | /* |
53 | * Verify that comb field match with |
54 | * corresponding event code fields |
55 | */ |
56 | FAIL_IF(EV_CODE_EXTRACT(event.attr.config, comb) != |
57 | get_mmcr1_comb(mmcr1: get_reg_value(intr_regs, register_name: "MMCR1" ), pmc: 4)); |
58 | |
59 | event_close(e: &event); |
60 | return 0; |
61 | } |
62 | |
63 | int main(void) |
64 | { |
65 | return test_harness(mmcr1_comb, "mmcr1_comb" ); |
66 | } |
67 | |