From 7f9eca51c1e8e5acc4264f960c2cdec150f597f9 Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Wed, 20 May 2020 11:20:07 -0700 Subject: [PATCH] perf metricgroup: Delay events string creation Currently event groups are placed into groups_list at the same time as the events string containing the events is built. Separate these two operations and build the groups_list first, then the event string from the groups_list. This adds an ability to reorder the groups_list that will be used in a later patch. Signed-off-by: Ian Rogers Acked-by: Jiri Olsa Cc: Alexander Shishkin Cc: Andi Kleen Cc: Andrii Nakryiko Cc: Cong Wang Cc: Jin Yao Cc: John Garry Cc: Kajol Jain Cc: Kan Liang Cc: Kim Phillips Cc: Mark Rutland Cc: Namhyung Kim Cc: Paul Clarke Cc: Peter Zijlstra Cc: Song Liu Cc: Srikar Dronamraju Cc: Stephane Eranian Cc: Vince Weaver Cc: bpf@vger.kernel.org Cc: netdev@vger.kernel.org Link: http://lore.kernel.org/lkml/20200520182011.32236-4-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/metricgroup.c | 33 +++++++++++++++++++++------------ 1 file changed, 21 insertions(+), 12 deletions(-) diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c index 70f3f92a3262..6247c9c808d6 100644 --- a/tools/perf/util/metricgroup.c +++ b/tools/perf/util/metricgroup.c @@ -90,6 +90,7 @@ struct egroup { const char *metric_expr; const char *metric_unit; int runtime; + bool has_constraint; }; static struct evsel *find_evsel_group(struct evlist *perf_evlist, @@ -488,8 +489,8 @@ int __weak arch_get_runtimeparam(void) return 1; } -static int __metricgroup__add_metric(struct strbuf *events, - struct list_head *group_list, struct pmu_event *pe, int runtime) +static int __metricgroup__add_metric(struct list_head *group_list, + struct pmu_event *pe, int runtime) { struct egroup *eg; @@ -502,6 +503,7 @@ static int __metricgroup__add_metric(struct strbuf *events, eg->metric_expr = pe->metric_expr; eg->metric_unit = pe->unit; eg->runtime = runtime; + eg->has_constraint = metricgroup__has_constraint(pe); if (expr__find_other(pe->metric_expr, NULL, &eg->pctx, runtime) < 0) { expr__ctx_clear(&eg->pctx); @@ -509,14 +511,6 @@ static int __metricgroup__add_metric(struct strbuf *events, return -EINVAL; } - if (events->len > 0) - strbuf_addf(events, ","); - - if (metricgroup__has_constraint(pe)) - metricgroup__add_metric_non_group(events, &eg->pctx); - else - metricgroup__add_metric_weak_group(events, &eg->pctx); - list_add_tail(&eg->nd, group_list); return 0; @@ -527,6 +521,7 @@ static int metricgroup__add_metric(const char *metric, struct strbuf *events, { struct pmu_events_map *map = perf_pmu__find_map(NULL); struct pmu_event *pe; + struct egroup *eg; int i, ret; bool has_match = false; @@ -550,7 +545,8 @@ static int metricgroup__add_metric(const char *metric, struct strbuf *events, pr_debug("metric expr %s for %s\n", pe->metric_expr, pe->metric_name); if (!strstr(pe->metric_expr, "?")) { - ret = __metricgroup__add_metric(events, group_list, pe, 1); + ret = __metricgroup__add_metric(group_list, + pe, 1); if (ret) return ret; } else { @@ -564,13 +560,26 @@ static int metricgroup__add_metric(const char *metric, struct strbuf *events, */ for (j = 0; j < count; j++) { - ret = __metricgroup__add_metric(events, group_list, pe, j); + ret = __metricgroup__add_metric( + group_list, pe, j); if (ret) return ret; } } } } + list_for_each_entry(eg, group_list, nd) { + if (events->len > 0) + strbuf_addf(events, ","); + + if (eg->has_constraint) { + metricgroup__add_metric_non_group(events, + &eg->pctx); + } else { + metricgroup__add_metric_weak_group(events, + &eg->pctx); + } + } return 0; }