85 lines · c
1// SPDX-License-Identifier: GPL-2.02#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 9define_exit_reasons_table(arm64_exit_reasons, kvm_arm_exception_type);10define_exit_reasons_table(arm64_trap_exit_reasons, kvm_arm_exception_class);11 12const char *kvm_trap_exit_reason = "esr_ec";13const char *vcpu_id_str = "id";14const char *kvm_exit_reason = "ret";15const char *kvm_entry_trace = "kvm:kvm_entry";16const char *kvm_exit_trace = "kvm:kvm_exit";17 18const char *kvm_events_tp[] = {19 "kvm:kvm_entry",20 "kvm:kvm_exit",21 NULL,22};23 24static 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 field34 * and, hence, we need to use a different exit_reasons table to35 * 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 43static 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 50static 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 61static 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 68struct kvm_reg_events_ops kvm_reg_events_ops[] = {69 {70 .name = "vmexit",71 .ops = &exit_events,72 },73 { NULL, NULL },74};75 76const char * const kvm_skip_events[] = {77 NULL,78};79 80int 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