1 // SPDX-License-Identifier: GPL-2.0 2 #include <errno.h> 3 #include <memory.h> 4 #include "../../../util/evsel.h" 5 #include "../../../util/kvm-stat.h" 6 #include "arm64_exception_types.h" 7 #include "debug.h" 8 9 define_exit_reasons_table(arm64_exit_reasons, kvm_arm_exception_type); 10 define_exit_reasons_table(arm64_trap_exit_reasons, kvm_arm_exception_class); 11 12 const char *kvm_trap_exit_reason = "esr_ec"; 13 const char *vcpu_id_str = "id"; 14 const char *kvm_exit_reason = "ret"; 15 const char *kvm_entry_trace = "kvm:kvm_entry"; 16 const char *kvm_exit_trace = "kvm:kvm_exit"; 17 18 const char *kvm_events_tp[] = { 19 "kvm:kvm_entry", 20 "kvm:kvm_exit", 21 NULL, 22 }; 23 24 static void event_get_key(struct evsel *evsel, 25 struct perf_sample *sample, 26 struct event_key *key) 27 { 28 key->info = 0; 29 key->key = evsel__intval(evsel, sample, kvm_exit_reason); 30 key->exit_reasons = arm64_exit_reasons; 31 32 /* 33 * TRAP exceptions carry exception class info in esr_ec field 34 * and, hence, we need to use a different exit_reasons table to 35 * properly decode event's est_ec. 36 */ 37 if (key->key == ARM_EXCEPTION_TRAP) { 38 key->key = evsel__intval(evsel, sample, kvm_trap_exit_reason); 39 key->exit_reasons = arm64_trap_exit_reasons; 40 } 41 } 42 43 static bool event_begin(struct evsel *evsel, 44 struct perf_sample *sample __maybe_unused, 45 struct event_key *key __maybe_unused) 46 { 47 return evsel__name_is(evsel, kvm_entry_trace); 48 } 49 50 static bool event_end(struct evsel *evsel, 51 struct perf_sample *sample, 52 struct event_key *key) 53 { 54 if (evsel__name_is(evsel, kvm_exit_trace)) { 55 event_get_key(evsel, sample, key); 56 return true; 57 } 58 return false; 59 } 60 61 static struct kvm_events_ops exit_events = { 62 .is_begin_event = event_begin, 63 .is_end_event = event_end, 64 .decode_key = exit_event_decode_key, 65 .name = "VM-EXIT" 66 }; 67 68 struct kvm_reg_events_ops kvm_reg_events_ops[] = { 69 { 70 .name = "vmexit", 71 .ops = &exit_events, 72 }, 73 { NULL, NULL }, 74 }; 75 76 const char * const kvm_skip_events[] = { 77 NULL, 78 }; 79 80 int cpu_isa_init(struct perf_kvm_stat *kvm, const char *cpuid __maybe_unused) 81 { 82 kvm->exit_reasons_isa = "arm64"; 83 return 0; 84 } 85