86 lines
2.1 KiB
C
86 lines
2.1 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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#include <errno.h>
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#include <memory.h>
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#include "../../../util/evsel.h"
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#include "../../../util/kvm-stat.h"
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#include "arm64_exception_types.h"
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#include "debug.h"
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define_exit_reasons_table(arm64_exit_reasons, kvm_arm_exception_type);
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define_exit_reasons_table(arm64_trap_exit_reasons, kvm_arm_exception_class);
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const char *kvm_trap_exit_reason = "esr_ec";
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const char *vcpu_id_str = "id";
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const int decode_str_len = 20;
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const char *kvm_exit_reason = "ret";
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const char *kvm_entry_trace = "kvm:kvm_entry";
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const char *kvm_exit_trace = "kvm:kvm_exit";
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const char *kvm_events_tp[] = {
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"kvm:kvm_entry",
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"kvm:kvm_exit",
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NULL,
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};
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static void event_get_key(struct evsel *evsel,
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struct perf_sample *sample,
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struct event_key *key)
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{
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key->info = 0;
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key->key = evsel__intval(evsel, sample, kvm_exit_reason);
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key->exit_reasons = arm64_exit_reasons;
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/*
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* TRAP exceptions carry exception class info in esr_ec field
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* and, hence, we need to use a different exit_reasons table to
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* properly decode event's est_ec.
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*/
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if (key->key == ARM_EXCEPTION_TRAP) {
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key->key = evsel__intval(evsel, sample, kvm_trap_exit_reason);
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key->exit_reasons = arm64_trap_exit_reasons;
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}
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}
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static bool event_begin(struct evsel *evsel,
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struct perf_sample *sample __maybe_unused,
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struct event_key *key __maybe_unused)
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{
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return !strcmp(evsel->name, kvm_entry_trace);
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}
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static bool event_end(struct evsel *evsel,
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struct perf_sample *sample,
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struct event_key *key)
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{
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if (!strcmp(evsel->name, kvm_exit_trace)) {
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event_get_key(evsel, sample, key);
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return true;
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}
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return false;
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}
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static struct kvm_events_ops exit_events = {
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.is_begin_event = event_begin,
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.is_end_event = event_end,
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.decode_key = exit_event_decode_key,
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.name = "VM-EXIT"
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};
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struct kvm_reg_events_ops kvm_reg_events_ops[] = {
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{
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.name = "vmexit",
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.ops = &exit_events,
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},
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{ NULL, NULL },
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};
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const char * const kvm_skip_events[] = {
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NULL,
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};
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int cpu_isa_init(struct perf_kvm_stat *kvm, const char *cpuid __maybe_unused)
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{
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kvm->exit_reasons_isa = "arm64";
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return 0;
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}
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