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Diffstat (limited to 'tools/perf/builtin-kvm.c')
-rw-r--r--tools/perf/builtin-kvm.c52
1 files changed, 48 insertions, 4 deletions
diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c
index fc2d63d3e791..43367eb00510 100644
--- a/tools/perf/builtin-kvm.c
+++ b/tools/perf/builtin-kvm.c
@@ -88,7 +88,7 @@ void exit_event_decode_key(struct perf_kvm_stat *kvm,
struct event_key *key,
char *decode)
{
- const char *exit_reason = get_exit_reason(kvm, kvm->exit_reasons,
+ const char *exit_reason = get_exit_reason(kvm, key->exit_reasons,
key->key);
scnprintf(decode, DECODE_STR_LEN, "%s", exit_reason);
@@ -261,6 +261,43 @@ static bool update_kvm_event(struct kvm_event *event, int vcpu_id,
return true;
}
+static bool is_child_event(struct perf_kvm_stat *kvm,
+ struct perf_evsel *evsel,
+ struct perf_sample *sample,
+ struct event_key *key)
+{
+ struct child_event_ops *child_ops;
+
+ child_ops = kvm->events_ops->child_ops;
+
+ if (!child_ops)
+ return false;
+
+ for (; child_ops->name; child_ops++) {
+ if (!strcmp(evsel->name, child_ops->name)) {
+ child_ops->get_key(evsel, sample, key);
+ return true;
+ }
+ }
+
+ return false;
+}
+
+static bool handle_child_event(struct perf_kvm_stat *kvm,
+ struct vcpu_event_record *vcpu_record,
+ struct event_key *key,
+ struct perf_sample *sample __maybe_unused)
+{
+ struct kvm_event *event = NULL;
+
+ if (key->key != INVALID_KEY)
+ event = find_create_kvm_event(kvm, key);
+
+ vcpu_record->last_event = event;
+
+ return true;
+}
+
static bool skip_event(const char *event)
{
const char * const *skip_events;
@@ -361,7 +398,8 @@ static bool handle_kvm_event(struct perf_kvm_stat *kvm,
struct perf_sample *sample)
{
struct vcpu_event_record *vcpu_record;
- struct event_key key = {.key = INVALID_KEY};
+ struct event_key key = { .key = INVALID_KEY,
+ .exit_reasons = kvm->exit_reasons };
vcpu_record = per_vcpu_record(thread, evsel, sample);
if (!vcpu_record)
@@ -375,6 +413,9 @@ static bool handle_kvm_event(struct perf_kvm_stat *kvm,
if (kvm->events_ops->is_begin_event(evsel, sample, &key))
return handle_begin_event(kvm, vcpu_record, &key, sample->time);
+ if (is_child_event(kvm, evsel, sample, &key))
+ return handle_child_event(kvm, vcpu_record, &key, sample);
+
if (kvm->events_ops->is_end_event(evsel, sample, &key))
return handle_end_event(kvm, vcpu_record, &key, sample);
@@ -1143,7 +1184,8 @@ kvm_events_report(struct perf_kvm_stat *kvm, int argc, const char **argv)
{
const struct option kvm_events_report_options[] = {
OPT_STRING(0, "event", &kvm->report_event, "report event",
- "event for reporting: vmexit, mmio, ioport"),
+ "event for reporting: vmexit, "
+ "mmio (x86 only), ioport (x86 only)"),
OPT_INTEGER(0, "vcpu", &kvm->trace_vcpu,
"vcpu id to report"),
OPT_STRING('k', "key", &kvm->sort_key, "sort-key",
@@ -1249,7 +1291,9 @@ static int kvm_events_live(struct perf_kvm_stat *kvm,
"key for sorting: sample(sort by samples number)"
" time (sort by avg time)"),
OPT_U64(0, "duration", &kvm->duration,
- "show events other than HALT that take longer than duration usecs"),
+ "show events other than"
+ " HLT (x86 only) or Wait state (s390 only)"
+ " that take longer than duration usecs"),
OPT_END()
};
const char * const live_usage[] = {