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 is PM_MRK_INST_CMPL (0x401e0) and 15 * PM_THRESH_MET (0x101ec) 16 * Threshold event selection used is issue to complete for cycles 17 * Sampling criteria is Load or Store only sampling 18 */ 19 #define p9_EventCode_1 0x13e35340401e0 20 #define p9_EventCode_2 0x17d34340101ec 21 #define p9_EventCode_3 0x13e35340101ec 22 #define p10_EventCode_1 0x35340401e0 23 #define p10_EventCode_2 0x35340101ec 24 25 /* 26 * Testcase for group constraint check of thresh_cmp bits which is 27 * used to program thresh compare field in Monitor Mode Control Register A 28 * (MMCRA: 9-18 bits for power9 and MMCRA: 8-18 bits for power10). 29 * All events in the group should match thresh compare bits otherwise 30 * event_open for the group will fail. 31 */ 32 static int group_constraint_thresh_cmp(void) 33 { 34 struct event event, leader; 35 36 /* Check for platform support for the test */ 37 SKIP_IF(platform_check_for_tests()); 38 39 if (have_hwcap2(PPC_FEATURE2_ARCH_3_1)) { 40 /* Init the events for the group contraint check for thresh_cmp bits */ 41 event_init(&leader, p10_EventCode_1); 42 43 /* Add the thresh_cmp value for leader in config1 */ 44 leader.attr.config1 = 1000; 45 FAIL_IF(event_open(&leader)); 46 47 event_init(&event, p10_EventCode_2); 48 49 /* Add the different thresh_cmp value from the leader event in config1 */ 50 event.attr.config1 = 2000; 51 52 /* Expected to fail as sibling and leader event request different thresh_cmp bits */ 53 FAIL_IF(!event_open_with_group(&event, leader.fd)); 54 55 event_close(&event); 56 57 /* Init the event for the group contraint thresh compare test */ 58 event_init(&event, p10_EventCode_2); 59 60 /* Add the same thresh_cmp value for leader and sibling event in config1 */ 61 event.attr.config1 = 1000; 62 63 /* Expected to succeed as sibling and leader event request same thresh_cmp bits */ 64 FAIL_IF(event_open_with_group(&event, leader.fd)); 65 66 event_close(&leader); 67 event_close(&event); 68 } else { 69 /* Init the events for the group contraint check for thresh_cmp bits */ 70 event_init(&leader, p9_EventCode_1); 71 FAIL_IF(event_open(&leader)); 72 73 event_init(&event, p9_EventCode_2); 74 75 /* Expected to fail as sibling and leader event request different thresh_cmp bits */ 76 FAIL_IF(!event_open_with_group(&event, leader.fd)); 77 78 event_close(&event); 79 80 /* Init the event for the group contraint thresh compare test */ 81 event_init(&event, p9_EventCode_3); 82 83 /* Expected to succeed as sibling and leader event request same thresh_cmp bits */ 84 FAIL_IF(event_open_with_group(&event, leader.fd)); 85 86 event_close(&leader); 87 event_close(&event); 88 } 89 90 return 0; 91 } 92 93 int main(void) 94 { 95 return test_harness(group_constraint_thresh_cmp, "group_constraint_thresh_cmp"); 96 } 97