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 | /* |
14 | * Primary PMU events used here are PM_MRK_INST_CMPL (0x401e0) and |
15 | * PM_THRESH_MET (0x101ec). |
16 | * Threshold event selection used is issue to complete and issue to |
17 | * finished for cycles |
18 | * Sampling criteria is Load or Store only sampling |
19 | */ |
20 | #define EventCode_1 0x35340401e0 |
21 | #define EventCode_2 0x34340101ec |
22 | #define EventCode_3 0x35340101ec |
23 | |
24 | /* |
25 | * Testcase for group constraint check of thresh_ctl bits which is |
26 | * used to program thresh compare field in Monitor Mode Control Register A |
27 | * (MMCR0: 48-55). |
28 | * All events in the group should match thresh ctl bits otherwise |
29 | * event_open for the group will fail. |
30 | */ |
31 | static int group_constraint_thresh_ctl(void) |
32 | { |
33 | struct event event, leader; |
34 | |
35 | /* Check for platform support for the test */ |
36 | SKIP_IF(platform_check_for_tests()); |
37 | |
38 | /* Init the events for the group contraint thresh control test */ |
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 and leader event request different thresh_ctl bits */ |
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 thresh control test */ |
50 | event_init(e: &event, EventCode_3); |
51 | |
52 | /* Expected to succeed as sibling and leader event request same thresh_ctl bits */ |
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_thresh_ctl, "group_constraint_thresh_ctl" ); |
64 | } |
65 | |