1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * Copyright 2022, Kajol Jain, IBM Corp. |
4 | */ |
5 | |
6 | #include <stdio.h> |
7 | #include <stdlib.h> |
8 | |
9 | #include "../event.h" |
10 | #include "utils.h" |
11 | #include "../sampling_tests/misc.h" |
12 | |
13 | /* All successful D-side store dispatches for this thread */ |
14 | #define EventCode_1 0x010000046080 |
15 | /* All successful D-side store dispatches for this thread that were L2 Miss */ |
16 | #define EventCode_2 0x26880 |
17 | /* All successful D-side store dispatches for this thread that were L2 Miss */ |
18 | #define EventCode_3 0x010000026880 |
19 | |
20 | /* |
21 | * Testcase for group constraint check of l2l3_sel bits which is |
22 | * used to program l2l3 select field in Monitor Mode Control Register 0 |
23 | * (MMCR0: 56-60). |
24 | * All events in the group should match l2l3_sel bits otherwise |
25 | * event_open for the group should fail. |
26 | */ |
27 | static int group_constraint_l2l3_sel(void) |
28 | { |
29 | struct event event, leader; |
30 | |
31 | /* |
32 | * Check for platform support for the test. |
33 | * This test is only aplicable on power10 |
34 | */ |
35 | SKIP_IF(platform_check_for_tests()); |
36 | SKIP_IF(!have_hwcap2(PPC_FEATURE2_ARCH_3_1)); |
37 | |
38 | /* Init the events for the group contraint check for l2l3_sel bits */ |
39 | event_init(e: &leader, EventCode_1); |
40 | FAIL_IF(event_open(e: &leader)); |
41 | |
42 | event_init(e: &event, EventCode_2); |
43 | |
44 | /* Expected to fail as sibling event doesn't request same l2l3_sel bits as leader */ |
45 | FAIL_IF(!event_open_with_group(e: &event, group_fd: leader.fd)); |
46 | |
47 | event_close(e: &event); |
48 | |
49 | /* Init the event for the group contraint l2l3_sel test */ |
50 | event_init(e: &event, EventCode_3); |
51 | |
52 | /* Expected to succeed as sibling event request same l2l3_sel bits as leader */ |
53 | FAIL_IF(event_open_with_group(e: &event, group_fd: leader.fd)); |
54 | |
55 | event_close(e: &leader); |
56 | event_close(e: &event); |
57 | |
58 | return 0; |
59 | } |
60 | |
61 | int main(void) |
62 | { |
63 | return test_harness(group_constraint_l2l3_sel, "group_constraint_l2l3_sel" ); |
64 | } |
65 | |