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, name: 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, name: 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 | |