linux-kernel - [PATCH 12/12] perf top: Move perf_top__reset_sample

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Message-Id: <20181119122016.22423-13-jolsa@kernel.org>
Date:   Mon, 19 Nov 2018 13:20:16 +0100
From:   Jiri Olsa <jolsa@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     lkml <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        David Miller <davem@...emloft.net>
Subject: [PATCH 12/12] perf top: Move perf_top__reset_sample_counters after counts display

Move perf_top__reset_sample_counters call right after we display
the counters so we can see the updated numbers longer.

Link: http://lkml.kernel.org/n/tip-dqn9jbi0wt939zpk9rydtkc8@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@...nel.org>
---
 tools/perf/builtin-top.c       | 4 ----
 tools/perf/ui/browsers/hists.c | 3 +++
 tools/perf/util/top.c          | 1 +
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 5d6e30f69d85..af4aaf8edb06 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -273,8 +273,6 @@ static void perf_top__print_sym_table(struct perf_top *top)
 	perf_top__header_snprintf(top, bf, sizeof(bf));
 	printf("%s\n", bf);
 
-	perf_top__reset_sample_counters(top);
-
 	printf("%-*.*s\n", win_width, win_width, graph_dotted_line);
 
 	if (!top->record_opts.overwrite &&
@@ -573,8 +571,6 @@ static void perf_top__sort_new_samples(void *arg)
 
 	if (t->lost || t->drop)
 		ui_helpline__fpush("Too slow to read ring buffer (change period (-c/-F) or limit CPUs (-C)\n");
-
-	perf_top__reset_sample_counters(t);
 }
 
 static void stop_top(void)
diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index 36b262c49f51..ffac1d54a3d4 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -2229,8 +2229,11 @@ static int hists_browser__scnprintf_title(struct hist_browser *browser, char *bf
 
 		if (top->zero)
 			printed += scnprintf(bf + printed, size - printed, " [z]");
+
+		perf_top__reset_sample_counters(top);
 	}
 
+
 	return printed;
 }
 
diff --git a/tools/perf/util/top.c b/tools/perf/util/top.c
index 31a8dee9af69..4c8da8c4435f 100644
--- a/tools/perf/util/top.c
+++ b/tools/perf/util/top.c
@@ -107,6 +107,7 @@ size_t perf_top__header_snprintf(struct perf_top *top, char *bf, size_t size)
 					top->evlist->cpus->nr > 1 ? "s" : "");
 	}
 
+	perf_top__reset_sample_counters(top);
 	return ret;
 }
 
-- 
2.17.2