linux-kernel - [PATCH v2 1/6] perf top: Use evlist->events

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Date:   Mon, 26 Apr 2021 18:37:12 -0700
From:   Namhyung Kim <namhyung@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Jiri Olsa <jolsa@...hat.com>
Cc:     Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Andi Kleen <ak@...ux.intel.com>,
        Ian Rogers <irogers@...gle.com>
Subject: [PATCH v2 1/6] perf top: Use evlist->events_stat to count events

It's mainly to count lost events for the warning so it should be ok
to use the evlist->stats instead.  This is needed for changes in the
next commit.

Signed-off-by: Namhyung Kim <namhyung@...nel.org>
---
 tools/perf/builtin-top.c | 20 ++++++++------------
 1 file changed, 8 insertions(+), 12 deletions(-)

diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 173ace43f845..69cb3635f5ef 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -328,13 +328,13 @@ static void perf_top__print_sym_table(struct perf_top *top)
 	printf("%-*.*s\n", win_width, win_width, graph_dotted_line);
 
 	if (!top->record_opts.overwrite &&
-	    (hists->stats.nr_lost_warned !=
-	    hists->stats.nr_events[PERF_RECORD_LOST])) {
-		hists->stats.nr_lost_warned =
-			      hists->stats.nr_events[PERF_RECORD_LOST];
+	    (top->evlist->stats.nr_lost_warned !=
+	     top->evlist->stats.nr_events[PERF_RECORD_LOST])) {
+		top->evlist->stats.nr_lost_warned =
+			      top->evlist->stats.nr_events[PERF_RECORD_LOST];
 		color_fprintf(stdout, PERF_COLOR_RED,
 			      "WARNING: LOST %d chunks, Check IO/CPU overload",
-			      hists->stats.nr_lost_warned);
+			      top->evlist->stats.nr_lost_warned);
 		++printed;
 	}
 
@@ -852,11 +852,9 @@ static void
 perf_top__process_lost(struct perf_top *top, union perf_event *event,
 		       struct evsel *evsel)
 {
-	struct hists *hists = evsel__hists(evsel);
-
 	top->lost += event->lost.lost;
 	top->lost_total += event->lost.lost;
-	hists->stats.total_lost += event->lost.lost;
+	evsel->evlist->stats.total_lost += event->lost.lost;
 }
 
 static void
@@ -864,11 +862,9 @@ perf_top__process_lost_samples(struct perf_top *top,
 			       union perf_event *event,
 			       struct evsel *evsel)
 {
-	struct hists *hists = evsel__hists(evsel);
-
 	top->lost += event->lost_samples.lost;
 	top->lost_total += event->lost_samples.lost;
-	hists->stats.total_lost_samples += event->lost_samples.lost;
+	evsel->evlist->stats.total_lost_samples += event->lost_samples.lost;
 }
 
 static u64 last_timestamp;
@@ -1205,7 +1201,7 @@ static int deliver_event(struct ordered_events *qe,
 	} else if (event->header.type == PERF_RECORD_LOST_SAMPLES) {
 		perf_top__process_lost_samples(top, event, evsel);
 	} else if (event->header.type < PERF_RECORD_MAX) {
-		hists__inc_nr_events(evsel__hists(evsel), event->header.type);
+		events_stats__inc(&session->evlist->stats, event->header.type);
 		machine__process_event(machine, event, &sample);
 	} else
 		++session->evlist->stats.nr_unknown_events;
-- 
2.31.1.527.g47e6f16901-goog