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 with PMC 2 */ |
14 | #define EventCode_1 0x26080 |
15 | /* All successful D-side store dispatches for this thread with PMC 4 */ |
16 | #define EventCode_2 0x46080 |
17 | /* All successful D-side store dispatches for this thread that were L2 Miss with PMC 3 */ |
18 | #define EventCode_3 0x36880 |
19 | |
20 | /* |
21 | * Testcase for group constraint check of unit and pmc bits which is |
22 | * used to program corresponding unit and pmc field in Monitor Mode |
23 | * Control Register 1 (MMCR1) |
24 | * One of the event in the group should use PMC 4 incase units field |
25 | * value is within 6 to 9 otherwise event_open for the group will fail. |
26 | */ |
27 | static int group_constraint_unit(void) |
28 | { |
29 | struct event *e, events[3]; |
30 | |
31 | /* |
32 | * Check for platform support for the test. |
33 | * Constraint to use PMC4 with one of the event in group, |
34 | * when the unit is within 6 to 9 is only applicable on |
35 | * power9. |
36 | */ |
37 | SKIP_IF(platform_check_for_tests()); |
38 | SKIP_IF(have_hwcap2(PPC_FEATURE2_ARCH_3_1)); |
39 | |
40 | /* Init the events for the group contraint check for unit bits */ |
41 | e = &events[0]; |
42 | event_init(e, EventCode_1); |
43 | |
44 | /* Expected to fail as PMC 4 is not used with unit field value 6 to 9 */ |
45 | FAIL_IF(!event_open(e: &events[0])); |
46 | |
47 | /* Init the events for the group contraint check for unit bits */ |
48 | e = &events[1]; |
49 | event_init(e, EventCode_2); |
50 | |
51 | /* Expected to pass as PMC 4 is used with unit field value 6 to 9 */ |
52 | FAIL_IF(event_open(e: &events[1])); |
53 | |
54 | /* Init the event for the group contraint unit test */ |
55 | e = &events[2]; |
56 | event_init(e, EventCode_3); |
57 | |
58 | /* Expected to fail as PMC4 is not being used */ |
59 | FAIL_IF(!event_open_with_group(e: &events[2], group_fd: events[0].fd)); |
60 | |
61 | /* Expected to succeed as event using PMC4 */ |
62 | FAIL_IF(event_open_with_group(e: &events[2], group_fd: events[1].fd)); |
63 | |
64 | event_close(e: &events[0]); |
65 | event_close(e: &events[1]); |
66 | event_close(e: &events[2]); |
67 | |
68 | return 0; |
69 | } |
70 | |
71 | int main(void) |
72 | { |
73 | return test_harness(group_constraint_unit, "group_constraint_unit" ); |
74 | } |
75 | |