1 // SPDX-License-Identifier: GPL-2.0
3 #include "../../util/kvm-stat.h"
4 #include "../../util/evsel.h"
9 define_exit_reasons_table(vmx_exit_reasons, VMX_EXIT_REASONS);
10 define_exit_reasons_table(svm_exit_reasons, SVM_EXIT_REASONS);
12 static struct kvm_events_ops exit_events = {
13 .is_begin_event = exit_event_begin,
14 .is_end_event = exit_event_end,
15 .decode_key = exit_event_decode_key,
19 const char *vcpu_id_str = "vcpu_id";
20 const int decode_str_len = 20;
21 const char *kvm_exit_reason = "exit_reason";
22 const char *kvm_entry_trace = "kvm:kvm_entry";
23 const char *kvm_exit_trace = "kvm:kvm_exit";
26 * For the mmio events, we treat:
27 * the time of MMIO write: kvm_mmio(KVM_TRACE_MMIO_WRITE...) -> kvm_entry
28 * the time of MMIO read: kvm_exit -> kvm_mmio(KVM_TRACE_MMIO_READ...).
30 static void mmio_event_get_key(struct evsel *evsel, struct perf_sample *sample,
31 struct event_key *key)
33 key->key = perf_evsel__intval(evsel, sample, "gpa");
34 key->info = perf_evsel__intval(evsel, sample, "type");
37 #define KVM_TRACE_MMIO_READ_UNSATISFIED 0
38 #define KVM_TRACE_MMIO_READ 1
39 #define KVM_TRACE_MMIO_WRITE 2
41 static bool mmio_event_begin(struct evsel *evsel,
42 struct perf_sample *sample, struct event_key *key)
44 /* MMIO read begin event in kernel. */
45 if (kvm_exit_event(evsel))
48 /* MMIO write begin event in kernel. */
49 if (!strcmp(evsel->name, "kvm:kvm_mmio") &&
50 perf_evsel__intval(evsel, sample, "type") == KVM_TRACE_MMIO_WRITE) {
51 mmio_event_get_key(evsel, sample, key);
58 static bool mmio_event_end(struct evsel *evsel, struct perf_sample *sample,
59 struct event_key *key)
61 /* MMIO write end event in kernel. */
62 if (kvm_entry_event(evsel))
65 /* MMIO read end event in kernel.*/
66 if (!strcmp(evsel->name, "kvm:kvm_mmio") &&
67 perf_evsel__intval(evsel, sample, "type") == KVM_TRACE_MMIO_READ) {
68 mmio_event_get_key(evsel, sample, key);
75 static void mmio_event_decode_key(struct perf_kvm_stat *kvm __maybe_unused,
76 struct event_key *key,
79 scnprintf(decode, decode_str_len, "%#lx:%s",
80 (unsigned long)key->key,
81 key->info == KVM_TRACE_MMIO_WRITE ? "W" : "R");
84 static struct kvm_events_ops mmio_events = {
85 .is_begin_event = mmio_event_begin,
86 .is_end_event = mmio_event_end,
87 .decode_key = mmio_event_decode_key,
91 /* The time of emulation pio access is from kvm_pio to kvm_entry. */
92 static void ioport_event_get_key(struct evsel *evsel,
93 struct perf_sample *sample,
94 struct event_key *key)
96 key->key = perf_evsel__intval(evsel, sample, "port");
97 key->info = perf_evsel__intval(evsel, sample, "rw");
100 static bool ioport_event_begin(struct evsel *evsel,
101 struct perf_sample *sample,
102 struct event_key *key)
104 if (!strcmp(evsel->name, "kvm:kvm_pio")) {
105 ioport_event_get_key(evsel, sample, key);
112 static bool ioport_event_end(struct evsel *evsel,
113 struct perf_sample *sample __maybe_unused,
114 struct event_key *key __maybe_unused)
116 return kvm_entry_event(evsel);
119 static void ioport_event_decode_key(struct perf_kvm_stat *kvm __maybe_unused,
120 struct event_key *key,
123 scnprintf(decode, decode_str_len, "%#llx:%s",
124 (unsigned long long)key->key,
125 key->info ? "POUT" : "PIN");
128 static struct kvm_events_ops ioport_events = {
129 .is_begin_event = ioport_event_begin,
130 .is_end_event = ioport_event_end,
131 .decode_key = ioport_event_decode_key,
132 .name = "IO Port Access"
135 const char *kvm_events_tp[] = {
143 struct kvm_reg_events_ops kvm_reg_events_ops[] = {
144 { .name = "vmexit", .ops = &exit_events },
145 { .name = "mmio", .ops = &mmio_events },
146 { .name = "ioport", .ops = &ioport_events },
150 const char * const kvm_skip_events[] = {
155 int cpu_isa_init(struct perf_kvm_stat *kvm, const char *cpuid)
157 if (strstr(cpuid, "Intel")) {
158 kvm->exit_reasons = vmx_exit_reasons;
159 kvm->exit_reasons_isa = "VMX";
160 } else if (strstr(cpuid, "AMD") || strstr(cpuid, "Hygon")) {
161 kvm->exit_reasons = svm_exit_reasons;
162 kvm->exit_reasons_isa = "SVM";