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
event_get_key(struct evsel * evsel,struct perf_sample * sample,struct event_key * key)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
event_begin(struct evsel * evsel,struct perf_sample * sample __maybe_unused,struct event_key * key __maybe_unused)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
event_end(struct evsel * evsel,struct perf_sample * sample,struct event_key * key)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
cpu_isa_init(struct perf_kvm_stat * kvm,const char * cpuid __maybe_unused)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