1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Arch specific functions for perf kvm stat. 4 * 5 * Copyright 2014 IBM Corp. 6 * Author(s): Alexander Yarygin <yarygin@linux.vnet.ibm.com> 7 */ 8 9 #include <errno.h> 10 #include <string.h> 11 #include "../../util/kvm-stat.h" 12 #include "../../util/evsel.h" 13 #include <asm/sie.h> 14 15 define_exit_reasons_table(sie_exit_reasons, sie_intercept_code); 16 define_exit_reasons_table(sie_icpt_insn_codes, icpt_insn_codes); 17 define_exit_reasons_table(sie_sigp_order_codes, sigp_order_codes); 18 define_exit_reasons_table(sie_diagnose_codes, diagnose_codes); 19 define_exit_reasons_table(sie_icpt_prog_codes, icpt_prog_codes); 20 21 const char *vcpu_id_str = "id"; 22 const char *kvm_exit_reason = "icptcode"; 23 const char *kvm_entry_trace = "kvm:kvm_s390_sie_enter"; 24 const char *kvm_exit_trace = "kvm:kvm_s390_sie_exit"; 25 26 static void event_icpt_insn_get_key(struct evsel *evsel, 27 struct perf_sample *sample, 28 struct event_key *key) 29 { 30 unsigned long insn; 31 32 insn = evsel__intval(evsel, sample, "instruction"); 33 key->key = icpt_insn_decoder(insn); 34 key->exit_reasons = sie_icpt_insn_codes; 35 } 36 37 static void event_sigp_get_key(struct evsel *evsel, 38 struct perf_sample *sample, 39 struct event_key *key) 40 { 41 key->key = evsel__intval(evsel, sample, "order_code"); 42 key->exit_reasons = sie_sigp_order_codes; 43 } 44 45 static void event_diag_get_key(struct evsel *evsel, 46 struct perf_sample *sample, 47 struct event_key *key) 48 { 49 key->key = evsel__intval(evsel, sample, "code"); 50 key->exit_reasons = sie_diagnose_codes; 51 } 52 53 static void event_icpt_prog_get_key(struct evsel *evsel, 54 struct perf_sample *sample, 55 struct event_key *key) 56 { 57 key->key = evsel__intval(evsel, sample, "code"); 58 key->exit_reasons = sie_icpt_prog_codes; 59 } 60 61 static struct child_event_ops child_events[] = { 62 { .name = "kvm:kvm_s390_intercept_instruction", 63 .get_key = event_icpt_insn_get_key }, 64 { .name = "kvm:kvm_s390_handle_sigp", 65 .get_key = event_sigp_get_key }, 66 { .name = "kvm:kvm_s390_handle_diag", 67 .get_key = event_diag_get_key }, 68 { .name = "kvm:kvm_s390_intercept_prog", 69 .get_key = event_icpt_prog_get_key }, 70 { NULL, NULL }, 71 }; 72 73 static struct kvm_events_ops exit_events = { 74 .is_begin_event = exit_event_begin, 75 .is_end_event = exit_event_end, 76 .child_ops = child_events, 77 .decode_key = exit_event_decode_key, 78 .name = "VM-EXIT" 79 }; 80 81 const char *kvm_events_tp[] = { 82 "kvm:kvm_s390_sie_enter", 83 "kvm:kvm_s390_sie_exit", 84 "kvm:kvm_s390_intercept_instruction", 85 "kvm:kvm_s390_handle_sigp", 86 "kvm:kvm_s390_handle_diag", 87 "kvm:kvm_s390_intercept_prog", 88 NULL, 89 }; 90 91 struct kvm_reg_events_ops kvm_reg_events_ops[] = { 92 { .name = "vmexit", .ops = &exit_events }, 93 { NULL, NULL }, 94 }; 95 96 const char * const kvm_skip_events[] = { 97 "Wait state", 98 NULL, 99 }; 100 101 int cpu_isa_init(struct perf_kvm_stat *kvm, const char *cpuid) 102 { 103 if (strstr(cpuid, "IBM")) { 104 kvm->exit_reasons = sie_exit_reasons; 105 kvm->exit_reasons_isa = "SIE"; 106 } else 107 return -ENOTSUP; 108 109 return 0; 110 } 111