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In compute_metric determine the correct metric_leader event to match the requested CPU. Fixes the handling of metrics particularly on hybrid machines. Signed-off-by: Ian Rogers Tested-by: Thomas Falcon --- tools/perf/util/evsel.c | 1 + tools/perf/util/python.c | 82 +++++++++++++++++++++++++++++----------- 2 files changed, 61 insertions(+), 22 deletions(-) diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index aee42666e882..5aae7f791bc2 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -538,6 +538,7 @@ struct evsel *evsel__clone(struct evsel *dest, struct e= vsel *orig) #endif evsel->handler =3D orig->handler; evsel->core.leader =3D orig->core.leader; + evsel->metric_leader =3D orig->metric_leader; =20 evsel->max_events =3D orig->max_events; zfree(&evsel->unit); diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c index fa5e4270d182..cc1019d29a5d 100644 --- a/tools/perf/util/python.c +++ b/tools/perf/util/python.c @@ -1340,27 +1340,48 @@ static int prepare_metric(const struct metric_expr = *mexp, struct metric_ref *metric_refs =3D mexp->metric_refs; =20 for (int i =3D 0; metric_events[i]; i++) { - char *n =3D strdup(evsel__metric_id(metric_events[i])); + struct evsel *cur =3D metric_events[i]; double val, ena, run; - int source_count =3D evsel__source_count(metric_events[i]); - int ret; + int ret, source_count =3D 0; struct perf_counts_values *old_count, *new_count; + char *n =3D strdup(evsel__metric_id(cur)); =20 if (!n) return -ENOMEM; =20 + /* + * If there are multiple uncore PMUs and we're not reading the + * leader's stats, determine the stats for the appropriate + * uncore PMU. + */ + if (evsel && evsel->metric_leader && + evsel->pmu !=3D evsel->metric_leader->pmu && + cur->pmu =3D=3D evsel->metric_leader->pmu) { + struct evsel *pos; + + evlist__for_each_entry(evsel->evlist, pos) { + if (pos->pmu !=3D evsel->pmu) + continue; + if (pos->metric_leader !=3D cur) + continue; + cur =3D pos; + source_count =3D 1; + break; + } + } + if (source_count =3D=3D 0) - source_count =3D 1; + source_count =3D evsel__source_count(cur); =20 - ret =3D evsel__ensure_counts(metric_events[i]); + ret =3D evsel__ensure_counts(cur); if (ret) return ret; =20 /* Set up pointers to the old and newly read counter values. */ - old_count =3D perf_counts(metric_events[i]->prev_raw_counts, cpu_idx, th= read_idx); - new_count =3D perf_counts(metric_events[i]->counts, cpu_idx, thread_idx); - /* Update the value in metric_events[i]->counts. */ - evsel__read_counter(metric_events[i], cpu_idx, thread_idx); + old_count =3D perf_counts(cur->prev_raw_counts, cpu_idx, thread_idx); + new_count =3D perf_counts(cur->counts, cpu_idx, thread_idx); + /* Update the value in cur->counts. */ + evsel__read_counter(cur, cpu_idx, thread_idx); =20 val =3D new_count->val - old_count->val; ena =3D new_count->ena - old_count->ena; @@ -1392,6 +1413,7 @@ static PyObject *pyrf_evlist__compute_metric(struct p= yrf_evlist *pevlist, struct metric_expr *mexp =3D NULL; struct expr_parse_ctx *pctx; double result =3D 0; + struct evsel *metric_evsel =3D NULL; =20 if (!PyArg_ParseTuple(args, "sii", &metric, &cpu, &thread)) return NULL; @@ -1404,6 +1426,7 @@ static PyObject *pyrf_evlist__compute_metric(struct p= yrf_evlist *pevlist, =20 list_for_each(pos, &me->head) { struct metric_expr *e =3D container_of(pos, struct metric_expr, nd); + struct evsel *pos2; =20 if (strcmp(e->metric_name, metric)) continue; @@ -1411,20 +1434,24 @@ static PyObject *pyrf_evlist__compute_metric(struct= pyrf_evlist *pevlist, if (e->metric_events[0] =3D=3D NULL) continue; =20 - cpu_idx =3D perf_cpu_map__idx(e->metric_events[0]->core.cpus, - (struct perf_cpu){.cpu =3D cpu}); - if (cpu_idx < 0) - continue; - - thread_idx =3D perf_thread_map__idx(e->metric_events[0]->core.threads, - thread); - if (thread_idx < 0) - continue; - - mexp =3D e; - break; + evlist__for_each_entry(&pevlist->evlist, pos2) { + if (pos2->metric_leader !=3D e->metric_events[0]) + continue; + cpu_idx =3D perf_cpu_map__idx(pos2->core.cpus, + (struct perf_cpu){.cpu =3D cpu}); + if (cpu_idx < 0) + continue; + + thread_idx =3D perf_thread_map__idx(pos2->core.threads, thread); + if (thread_idx < 0) + continue; + metric_evsel =3D pos2; + mexp =3D e; + goto done; + } } } +done: if (!mexp) { PyErr_Format(PyExc_TypeError, "Unknown metric '%s' for CPU '%d' and thre= ad '%d'", metric, cpu, thread); @@ -1435,7 +1462,7 @@ static PyObject *pyrf_evlist__compute_metric(struct p= yrf_evlist *pevlist, if (!pctx) return PyErr_NoMemory(); =20 - ret =3D prepare_metric(mexp, mexp->metric_events[0], pctx, cpu_idx, threa= d_idx); + ret =3D prepare_metric(mexp, metric_evsel, pctx, cpu_idx, thread_idx); if (ret) { expr__ctx_free(pctx); errno =3D -ret; @@ -1996,6 +2023,17 @@ static PyObject *pyrf_evlist__from_evlist(struct evl= ist *evlist) else if (leader =3D=3D NULL) evsel__set_leader(pos, pos); } + + leader =3D pos->metric_leader; + + if (pos !=3D leader) { + int idx =3D evlist__pos(evlist, leader); + + if (idx >=3D 0) + pos->metric_leader =3D evlist__at(&pevlist->evlist, idx); + else if (leader =3D=3D NULL) + pos->metric_leader =3D pos; + } } metricgroup__copy_metric_events(&pevlist->evlist, /*cgrp=3D*/NULL, &pevlist->evlist.metric_events, --=20 2.52.0.158.g65b55ccf14-goog