1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Arch specific functions for perf kvm stat. 4 * 5 * Copyright 2024 Beijing ESWIN Computing Technology Co., Ltd. 6 * 7 */ 8 #include <errno.h> 9 #include <memory.h> 10 #include "../../../util/evsel.h" 11 #include "../../../util/kvm-stat.h" 12 #include "riscv_exception_types.h" 13 #include "debug.h" 14 15 define_exit_reasons_table(riscv_exit_reasons, kvm_riscv_exception_class); 16 17 const char *vcpu_id_str = "id"; 18 const char *kvm_exit_reason = "scause"; 19 const char *kvm_entry_trace = "kvm:kvm_entry"; 20 const char *kvm_exit_trace = "kvm:kvm_exit"; 21 22 const char *kvm_events_tp[] = { 23 "kvm:kvm_entry", 24 "kvm:kvm_exit", 25 NULL, 26 }; 27 28 static void event_get_key(struct evsel *evsel, 29 struct perf_sample *sample, 30 struct event_key *key) 31 { 32 key->info = 0; 33 key->key = evsel__intval(evsel, sample, kvm_exit_reason); 34 key->exit_reasons = riscv_exit_reasons; 35 } 36 37 static bool event_begin(struct evsel *evsel, 38 struct perf_sample *sample __maybe_unused, 39 struct event_key *key __maybe_unused) 40 { 41 return evsel__name_is(evsel, kvm_entry_trace); 42 } 43 44 static bool event_end(struct evsel *evsel, 45 struct perf_sample *sample, 46 struct event_key *key) 47 { 48 if (evsel__name_is(evsel, kvm_exit_trace)) { 49 event_get_key(evsel, sample, key); 50 return true; 51 } 52 return false; 53 } 54 55 static struct kvm_events_ops exit_events = { 56 .is_begin_event = event_begin, 57 .is_end_event = event_end, 58 .decode_key = exit_event_decode_key, 59 .name = "VM-EXIT" 60 }; 61 62 struct kvm_reg_events_ops kvm_reg_events_ops[] = { 63 { 64 .name = "vmexit", 65 .ops = &exit_events, 66 }, 67 { NULL, NULL }, 68 }; 69 70 const char * const kvm_skip_events[] = { 71 NULL, 72 }; 73 74 int cpu_isa_init(struct perf_kvm_stat *kvm, const char *cpuid __maybe_unused) 75 { 76 kvm->exit_reasons_isa = "riscv64"; 77 return 0; 78 } 79