Alexander Yarygin | 9daa812 | 2014-07-03 18:29:05 +0400 | [diff] [blame] | 1 | #include "../../util/kvm-stat.h" |
Hemant Kumar | 162607e | 2016-01-28 12:03:04 +0530 | [diff] [blame] | 2 | #include <asm/svm.h> |
| 3 | #include <asm/vmx.h> |
| 4 | #include <asm/kvm.h> |
Alexander Yarygin | 9daa812 | 2014-07-03 18:29:05 +0400 | [diff] [blame] | 5 | |
| 6 | define_exit_reasons_table(vmx_exit_reasons, VMX_EXIT_REASONS); |
| 7 | define_exit_reasons_table(svm_exit_reasons, SVM_EXIT_REASONS); |
| 8 | |
| 9 | static struct kvm_events_ops exit_events = { |
| 10 | .is_begin_event = exit_event_begin, |
| 11 | .is_end_event = exit_event_end, |
| 12 | .decode_key = exit_event_decode_key, |
| 13 | .name = "VM-EXIT" |
| 14 | }; |
| 15 | |
Hemant Kumar | 162607e | 2016-01-28 12:03:04 +0530 | [diff] [blame] | 16 | const char *vcpu_id_str = "vcpu_id"; |
| 17 | const int decode_str_len = 20; |
| 18 | const char *kvm_exit_reason = "exit_reason"; |
| 19 | const char *kvm_entry_trace = "kvm:kvm_entry"; |
| 20 | const char *kvm_exit_trace = "kvm:kvm_exit"; |
| 21 | |
Alexander Yarygin | 9daa812 | 2014-07-03 18:29:05 +0400 | [diff] [blame] | 22 | /* |
| 23 | * For the mmio events, we treat: |
| 24 | * the time of MMIO write: kvm_mmio(KVM_TRACE_MMIO_WRITE...) -> kvm_entry |
| 25 | * the time of MMIO read: kvm_exit -> kvm_mmio(KVM_TRACE_MMIO_READ...). |
| 26 | */ |
| 27 | static void mmio_event_get_key(struct perf_evsel *evsel, struct perf_sample *sample, |
| 28 | struct event_key *key) |
| 29 | { |
| 30 | key->key = perf_evsel__intval(evsel, sample, "gpa"); |
| 31 | key->info = perf_evsel__intval(evsel, sample, "type"); |
| 32 | } |
| 33 | |
| 34 | #define KVM_TRACE_MMIO_READ_UNSATISFIED 0 |
| 35 | #define KVM_TRACE_MMIO_READ 1 |
| 36 | #define KVM_TRACE_MMIO_WRITE 2 |
| 37 | |
| 38 | static bool mmio_event_begin(struct perf_evsel *evsel, |
| 39 | struct perf_sample *sample, struct event_key *key) |
| 40 | { |
| 41 | /* MMIO read begin event in kernel. */ |
| 42 | if (kvm_exit_event(evsel)) |
| 43 | return true; |
| 44 | |
| 45 | /* MMIO write begin event in kernel. */ |
| 46 | if (!strcmp(evsel->name, "kvm:kvm_mmio") && |
| 47 | perf_evsel__intval(evsel, sample, "type") == KVM_TRACE_MMIO_WRITE) { |
| 48 | mmio_event_get_key(evsel, sample, key); |
| 49 | return true; |
| 50 | } |
| 51 | |
| 52 | return false; |
| 53 | } |
| 54 | |
| 55 | static bool mmio_event_end(struct perf_evsel *evsel, struct perf_sample *sample, |
| 56 | struct event_key *key) |
| 57 | { |
| 58 | /* MMIO write end event in kernel. */ |
| 59 | if (kvm_entry_event(evsel)) |
| 60 | return true; |
| 61 | |
| 62 | /* MMIO read end event in kernel.*/ |
| 63 | if (!strcmp(evsel->name, "kvm:kvm_mmio") && |
| 64 | perf_evsel__intval(evsel, sample, "type") == KVM_TRACE_MMIO_READ) { |
| 65 | mmio_event_get_key(evsel, sample, key); |
| 66 | return true; |
| 67 | } |
| 68 | |
| 69 | return false; |
| 70 | } |
| 71 | |
| 72 | static void mmio_event_decode_key(struct perf_kvm_stat *kvm __maybe_unused, |
| 73 | struct event_key *key, |
| 74 | char *decode) |
| 75 | { |
Hemant Kumar | 162607e | 2016-01-28 12:03:04 +0530 | [diff] [blame] | 76 | scnprintf(decode, decode_str_len, "%#lx:%s", |
Alexander Yarygin | 9daa812 | 2014-07-03 18:29:05 +0400 | [diff] [blame] | 77 | (unsigned long)key->key, |
| 78 | key->info == KVM_TRACE_MMIO_WRITE ? "W" : "R"); |
| 79 | } |
| 80 | |
| 81 | static struct kvm_events_ops mmio_events = { |
| 82 | .is_begin_event = mmio_event_begin, |
| 83 | .is_end_event = mmio_event_end, |
| 84 | .decode_key = mmio_event_decode_key, |
| 85 | .name = "MMIO Access" |
| 86 | }; |
| 87 | |
| 88 | /* The time of emulation pio access is from kvm_pio to kvm_entry. */ |
| 89 | static void ioport_event_get_key(struct perf_evsel *evsel, |
| 90 | struct perf_sample *sample, |
| 91 | struct event_key *key) |
| 92 | { |
| 93 | key->key = perf_evsel__intval(evsel, sample, "port"); |
| 94 | key->info = perf_evsel__intval(evsel, sample, "rw"); |
| 95 | } |
| 96 | |
| 97 | static bool ioport_event_begin(struct perf_evsel *evsel, |
| 98 | struct perf_sample *sample, |
| 99 | struct event_key *key) |
| 100 | { |
| 101 | if (!strcmp(evsel->name, "kvm:kvm_pio")) { |
| 102 | ioport_event_get_key(evsel, sample, key); |
| 103 | return true; |
| 104 | } |
| 105 | |
| 106 | return false; |
| 107 | } |
| 108 | |
| 109 | static bool ioport_event_end(struct perf_evsel *evsel, |
| 110 | struct perf_sample *sample __maybe_unused, |
| 111 | struct event_key *key __maybe_unused) |
| 112 | { |
| 113 | return kvm_entry_event(evsel); |
| 114 | } |
| 115 | |
| 116 | static void ioport_event_decode_key(struct perf_kvm_stat *kvm __maybe_unused, |
| 117 | struct event_key *key, |
| 118 | char *decode) |
| 119 | { |
Hemant Kumar | 162607e | 2016-01-28 12:03:04 +0530 | [diff] [blame] | 120 | scnprintf(decode, decode_str_len, "%#llx:%s", |
Alexander Yarygin | 9daa812 | 2014-07-03 18:29:05 +0400 | [diff] [blame] | 121 | (unsigned long long)key->key, |
| 122 | key->info ? "POUT" : "PIN"); |
| 123 | } |
| 124 | |
| 125 | static struct kvm_events_ops ioport_events = { |
| 126 | .is_begin_event = ioport_event_begin, |
| 127 | .is_end_event = ioport_event_end, |
| 128 | .decode_key = ioport_event_decode_key, |
| 129 | .name = "IO Port Access" |
| 130 | }; |
| 131 | |
Hemant Kumar | 48deaa7 | 2016-01-28 12:03:05 +0530 | [diff] [blame] | 132 | const char *kvm_events_tp[] = { |
Alexander Yarygin | 9daa812 | 2014-07-03 18:29:05 +0400 | [diff] [blame] | 133 | "kvm:kvm_entry", |
| 134 | "kvm:kvm_exit", |
| 135 | "kvm:kvm_mmio", |
| 136 | "kvm:kvm_pio", |
| 137 | NULL, |
| 138 | }; |
| 139 | |
| 140 | struct kvm_reg_events_ops kvm_reg_events_ops[] = { |
| 141 | { .name = "vmexit", .ops = &exit_events }, |
| 142 | { .name = "mmio", .ops = &mmio_events }, |
| 143 | { .name = "ioport", .ops = &ioport_events }, |
| 144 | { NULL, NULL }, |
| 145 | }; |
| 146 | |
Alexander Yarygin | 54c801f | 2014-07-03 18:29:06 +0400 | [diff] [blame] | 147 | const char * const kvm_skip_events[] = { |
| 148 | "HLT", |
| 149 | NULL, |
| 150 | }; |
| 151 | |
Alexander Yarygin | 9daa812 | 2014-07-03 18:29:05 +0400 | [diff] [blame] | 152 | int cpu_isa_init(struct perf_kvm_stat *kvm, const char *cpuid) |
| 153 | { |
| 154 | if (strstr(cpuid, "Intel")) { |
| 155 | kvm->exit_reasons = vmx_exit_reasons; |
| 156 | kvm->exit_reasons_isa = "VMX"; |
| 157 | } else if (strstr(cpuid, "AMD")) { |
| 158 | kvm->exit_reasons = svm_exit_reasons; |
| 159 | kvm->exit_reasons_isa = "SVM"; |
| 160 | } else |
| 161 | return -ENOTSUP; |
| 162 | |
| 163 | return 0; |
| 164 | } |