linux-kernel - [PATCH v3 18/46] perf parse-events: Set pmu

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Date:   Fri, 28 Apr 2023 22:34:38 -0700
From:   Ian Rogers <irogers@...gle.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Kan Liang <kan.liang@...ux.intel.com>,
        Ahmad Yasin <ahmad.yasin@...el.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Stephane Eranian <eranian@...gle.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Perry Taylor <perry.taylor@...el.com>,
        Samantha Alt <samantha.alt@...el.com>,
        Caleb Biggers <caleb.biggers@...el.com>,
        Weilin Wang <weilin.wang@...el.com>,
        Edward Baker <edward.baker@...el.com>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Florian Fischer <florian.fischer@...q.space>,
        Rob Herring <robh@...nel.org>,
        Zhengjun Xing <zhengjun.xing@...ux.intel.com>,
        John Garry <john.g.garry@...cle.com>,
        Kajol Jain <kjain@...ux.ibm.com>,
        Sumanth Korikkar <sumanthk@...ux.ibm.com>,
        Thomas Richter <tmricht@...ux.ibm.com>,
        Tiezhu Yang <yangtiezhu@...ngson.cn>,
        Ravi Bangoria <ravi.bangoria@....com>,
        Leo Yan <leo.yan@...aro.org>,
        Yang Jihong <yangjihong1@...wei.com>,
        James Clark <james.clark@....com>,
        Suzuki Poulouse <suzuki.poulose@....com>,
        Kang Minchul <tegongkang@...il.com>,
        Athira Rajeev <atrajeev@...ux.vnet.ibm.com>,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Ian Rogers <irogers@...gle.com>
Subject: [PATCH v3 18/46] perf parse-events: Set pmu_name whenever a pmu is given

Change add_event to always set pmu_name when possible as not all code
checks both pmu->name and evsel->pmu_name, for example,
uniquify_counter in stat-display.c.

Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/perf/util/parse-events.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 707c53f1be09..9cb5f040a74c 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -269,6 +269,7 @@ __add_event(struct list_head *list, int *idx,
 	evsel->core.requires_cpu = pmu ? pmu->is_uncore : false;
 	evsel->auto_merge_stats = auto_merge_stats;
 	evsel->pmu = pmu;
+	evsel->pmu_name = pmu && pmu->name ? strdup(pmu->name) : NULL;
 
 	if (name)
 		evsel->name = strdup(name);
@@ -1500,12 +1501,7 @@ int parse_events_add_pmu(struct parse_events_state *parse_state,
 				    /*metric_id=*/NULL, pmu,
 				    /*config_terms=*/NULL, auto_merge_stats,
 				    /*cpu_list=*/NULL);
-		if (evsel) {
-			evsel->pmu_name = name ? strdup(name) : NULL;
-			return 0;
-		} else {
-			return -ENOMEM;
-		}
+		return evsel ? 0 : -ENOMEM;
 	}
 
 	if (!parse_state->fake_pmu && perf_pmu__check_alias(pmu, head_config, &info))
@@ -1561,7 +1557,6 @@ int parse_events_add_pmu(struct parse_events_state *parse_state,
 	if (evsel->name)
 		evsel->use_config_name = true;
 
-	evsel->pmu_name = name ? strdup(name) : NULL;
 	evsel->percore = config_term_percore(&evsel->config_terms);
 
 	if (parse_state->fake_pmu)
-- 
2.40.1.495.gc816e09b53d-goog