[RFC PATCH 4/7] perf metricgroup: always place duration_time last
From: Ian Rogers <irogers@google.com>
Date: 2020-05-07 08:15:31
Also in:
bpf, linux-perf-users, lkml
Subsystem:
performance events subsystem, the rest · Maintainers:
Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo, Namhyung Kim, Linus Torvalds
If a metric contains the duration_time event then the event is placed outside of the metric's group of events. Rather than split the group, make it so the duration_time is immediately after the group. Signed-off-by: Ian Rogers <irogers@google.com> --- tools/perf/util/metricgroup.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-)
diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c
index 2356dda92a07..48d0143b4b0c 100644
--- a/tools/perf/util/metricgroup.c
+++ b/tools/perf/util/metricgroup.c@@ -421,8 +421,8 @@ static void metricgroup__add_metric_weak_group(struct strbuf *events, struct expr_parse_ctx *ctx) { struct hashmap_entry *cur; - size_t bkt, i = 0; - bool no_group = false; + size_t bkt; + bool no_group = true, has_duration = false; hashmap__for_each_entry((&ctx->ids), cur, bkt) { pr_debug("found event %s\n", (const char*)cur->key);
@@ -432,20 +432,20 @@ static void metricgroup__add_metric_weak_group(struct strbuf *events, * group. */ if (!strcmp(cur->key, "duration_time")) { - if (i > 0) - strbuf_addf(events, "}:W,"); - strbuf_addf(events, "duration_time"); - no_group = true; + has_duration = true; continue; } strbuf_addf(events, "%s%s", - i == 0 || no_group ? "{" : ",", + no_group ? "{" : ",", (const char*)cur->key); no_group = false; - i++; } - if (!no_group) - strbuf_addf(events, "}:W"); + if (!no_group) { + strbuf_addf(events, "}:W"); + if (has_duration) + strbuf_addf(events, ",duration_time"); + } else if (has_duration) + strbuf_addf(events, "duration_time"); } static void metricgroup__add_metric_non_group(struct strbuf *events,
--
2.26.2.526.g744177e7f7-goog