| // 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 is PM_MRK_INST_CMPL (0x401e0) and |
| * PM_THRESH_MET (0x101ec) |
| * Threshold event selection used is issue to complete for cycles |
| * Sampling criteria is Load or Store only sampling |
| */ |
| #define p9_EventCode_1 0x13e35340401e0 |
| #define p9_EventCode_2 0x17d34340101ec |
| #define p9_EventCode_3 0x13e35340101ec |
| #define p10_EventCode_1 0x35340401e0 |
| #define p10_EventCode_2 0x35340101ec |
| |
| /* |
| * Testcase for group constraint check of thresh_cmp bits which is |
| * used to program thresh compare field in Monitor Mode Control Register A |
| * (MMCRA: 9-18 bits for power9 and MMCRA: 8-18 bits for power10). |
| * All events in the group should match thresh compare bits otherwise |
| * event_open for the group will fail. |
| */ |
| static int group_constraint_thresh_cmp(void) |
| { |
| struct event event, leader; |
| |
| /* Check for platform support for the test */ |
| SKIP_IF(platform_check_for_tests()); |
| |
| if (have_hwcap2(PPC_FEATURE2_ARCH_3_1)) { |
| /* Init the events for the group contraint check for thresh_cmp bits */ |
| event_init(&leader, p10_EventCode_1); |
| |
| /* Add the thresh_cmp value for leader in config1 */ |
| leader.attr.config1 = 1000; |
| FAIL_IF(event_open(&leader)); |
| |
| event_init(&event, p10_EventCode_2); |
| |
| /* Add the different thresh_cmp value from the leader event in config1 */ |
| event.attr.config1 = 2000; |
| |
| /* Expected to fail as sibling and leader event request different thresh_cmp bits */ |
| FAIL_IF(!event_open_with_group(&event, leader.fd)); |
| |
| event_close(&event); |
| |
| /* Init the event for the group contraint thresh compare test */ |
| event_init(&event, p10_EventCode_2); |
| |
| /* Add the same thresh_cmp value for leader and sibling event in config1 */ |
| event.attr.config1 = 1000; |
| |
| /* Expected to succeed as sibling and leader event request same thresh_cmp bits */ |
| FAIL_IF(event_open_with_group(&event, leader.fd)); |
| |
| event_close(&leader); |
| event_close(&event); |
| } else { |
| /* Init the events for the group contraint check for thresh_cmp bits */ |
| event_init(&leader, p9_EventCode_1); |
| FAIL_IF(event_open(&leader)); |
| |
| event_init(&event, p9_EventCode_2); |
| |
| /* Expected to fail as sibling and leader event request different thresh_cmp bits */ |
| FAIL_IF(!event_open_with_group(&event, leader.fd)); |
| |
| event_close(&event); |
| |
| /* Init the event for the group contraint thresh compare test */ |
| event_init(&event, p9_EventCode_3); |
| |
| /* Expected to succeed as sibling and leader event request same thresh_cmp 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_cmp, "group_constraint_thresh_cmp"); |
| } |