| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * Copyright 2022, Kajol Jain, IBM Corp. |
| */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| |
| #include "../event.h" |
| #include "utils.h" |
| #include "../sampling_tests/misc.h" |
| |
| /* |
| * Primary PMU events used here are PM_MRK_INST_CMPL (0x401e0) and |
| * PM_THRESH_MET (0x101ec). |
| * Threshold event selection used is issue to complete and issue to |
| * finished for cycles |
| * Sampling criteria is Load or Store only sampling |
| */ |
| #define EventCode_1 0x35340401e0 |
| #define EventCode_2 0x34340101ec |
| #define EventCode_3 0x35340101ec |
| |
| /* |
| * Testcase for group constraint check of thresh_ctl bits which is |
| * used to program thresh compare field in Monitor Mode Control Register A |
| * (MMCR0: 48-55). |
| * All events in the group should match thresh ctl bits otherwise |
| * event_open for the group will fail. |
| */ |
| static int group_constraint_thresh_ctl(void) |
| { |
| struct event event, leader; |
| |
| /* Check for platform support for the test */ |
| SKIP_IF(platform_check_for_tests()); |
| |
| /* Init the events for the group contraint thresh control test */ |
| event_init(&leader, EventCode_1); |
| FAIL_IF(event_open(&leader)); |
| |
| event_init(&event, EventCode_2); |
| |
| /* Expected to fail as sibling and leader event request different thresh_ctl bits */ |
| FAIL_IF(!event_open_with_group(&event, leader.fd)); |
| |
| event_close(&event); |
| |
| /* Init the event for the group contraint thresh control test */ |
| event_init(&event, EventCode_3); |
| |
| /* Expected to succeed as sibling and leader event request same thresh_ctl bits */ |
| FAIL_IF(event_open_with_group(&event, leader.fd)); |
| |
| event_close(&leader); |
| event_close(&event); |
| |
| return 0; |
| } |
| |
| int main(void) |
| { |
| return test_harness(group_constraint_thresh_ctl, "group_constraint_thresh_ctl"); |
| } |