| // 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" |
| |
| /* All L1 D cache load references counted at finish, gated by reject */ |
| #define EventCode_1 0x1100fc |
| /* Load Missed L1 */ |
| #define EventCode_2 0x23e054 |
| /* Load Missed L1 */ |
| #define EventCode_3 0x13e054 |
| |
| /* |
| * Testcase for group constraint check of data and instructions |
| * cache qualifier bits which is used to program cache select field in |
| * Monitor Mode Control Register 1 (MMCR1: 16-17) for l1 cache. |
| * All events in the group should match cache select bits otherwise |
| * event_open for the group will fail. |
| */ |
| static int group_constraint_cache(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 check for l1 cache select bits */ |
| event_init(&leader, EventCode_1); |
| FAIL_IF(event_open(&leader)); |
| |
| event_init(&event, EventCode_2); |
| |
| /* Expected to fail as sibling event doesn't request same l1 cache select bits as leader */ |
| FAIL_IF(!event_open_with_group(&event, leader.fd)); |
| |
| event_close(&event); |
| |
| /* Init the event for the group contraint l1 cache select test */ |
| event_init(&event, EventCode_3); |
| |
| /* Expected to succeed as sibling event request same l1 cache select bits as leader */ |
| 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_cache, "group_constraint_cache"); |
| } |