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Diffstat (limited to 'tools/perf/util/evsel.c')
-rw-r--r--tools/perf/util/evsel.c27
1 files changed, 26 insertions, 1 deletions
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index dbc0466db368..dfe2958e6287 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -956,6 +956,14 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts,
attr->sample_freq = 0;
attr->sample_period = 0;
attr->write_backward = 0;
+
+ /*
+ * We don't get sample for slave events, we make them
+ * when delivering group leader sample. Set the slave
+ * event to follow the master sample_type to ease up
+ * report.
+ */
+ attr->sample_type = leader->attr.sample_type;
}
if (opts->no_samples)
@@ -1035,6 +1043,9 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts,
attr->mmap = track;
attr->mmap2 = track && !perf_missing_features.mmap2;
attr->comm = track;
+ attr->ksymbol = track && !perf_missing_features.ksymbol;
+ attr->bpf_event = track && opts->bpf_event &&
+ !perf_missing_features.bpf_event;
if (opts->record_namespaces)
attr->namespaces = track;
@@ -1652,6 +1663,8 @@ int perf_event_attr__fprintf(FILE *fp, struct perf_event_attr *attr,
PRINT_ATTRf(context_switch, p_unsigned);
PRINT_ATTRf(write_backward, p_unsigned);
PRINT_ATTRf(namespaces, p_unsigned);
+ PRINT_ATTRf(ksymbol, p_unsigned);
+ PRINT_ATTRf(bpf_event, p_unsigned);
PRINT_ATTRn("{ wakeup_events, wakeup_watermark }", wakeup_events, p_unsigned);
PRINT_ATTRf(bp_type, p_unsigned);
@@ -1811,6 +1824,10 @@ fallback_missing_features:
PERF_SAMPLE_BRANCH_NO_CYCLES);
if (perf_missing_features.group_read && evsel->attr.inherit)
evsel->attr.read_format &= ~(PERF_FORMAT_GROUP|PERF_FORMAT_ID);
+ if (perf_missing_features.ksymbol)
+ evsel->attr.ksymbol = 0;
+ if (perf_missing_features.bpf_event)
+ evsel->attr.bpf_event = 0;
retry_sample_id:
if (perf_missing_features.sample_id_all)
evsel->attr.sample_id_all = 0;
@@ -1930,7 +1947,15 @@ try_fallback:
* Must probe features in the order they were added to the
* perf_event_attr interface.
*/
- if (!perf_missing_features.write_backward && evsel->attr.write_backward) {
+ if (!perf_missing_features.bpf_event && evsel->attr.bpf_event) {
+ perf_missing_features.bpf_event = true;
+ pr_debug2("switching off bpf_event\n");
+ goto fallback_missing_features;
+ } else if (!perf_missing_features.ksymbol && evsel->attr.ksymbol) {
+ perf_missing_features.ksymbol = true;
+ pr_debug2("switching off ksymbol\n");
+ goto fallback_missing_features;
+ } else if (!perf_missing_features.write_backward && evsel->attr.write_backward) {
perf_missing_features.write_backward = true;
pr_debug2("switching off write_backward\n");
goto out_close;