linux-kernel - [tip:perf/core] perf top: Move perf_top__reset_sample

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Message-ID: <tip-o72pyiwt05f3p2juprwmz2jo@git.kernel.org>
Date:   Fri, 14 Dec 2018 12:51:16 -0800
From:   tip-bot for Jiri Olsa <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     alexander.shishkin@...ux.intel.com, jolsa@...nel.org,
        davem@...emloft.net, hpa@...or.com, namhyung@...nel.org,
        mingo@...nel.org, peterz@...radead.org,
        linux-kernel@...r.kernel.org, tglx@...utronix.de
Subject: [tip:perf/core] perf top: Move perf_top__reset_sample_counters() to
 after counts display

Commit-ID:  a1dcb76e592a63b0c9213924b80c6021f56bdaae
Gitweb:     https://git.kernel.org/tip/a1dcb76e592a63b0c9213924b80c6021f56bdaae
Author:     Jiri Olsa <jolsa@...nel.org>
AuthorDate: Tue, 13 Nov 2018 11:15:34 +0100
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Thu, 6 Dec 2018 14:12:34 -0300

perf top: Move perf_top__reset_sample_counters() to after counts display

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

Acked-by: David S. Miller <davem@...emloft.net>
Acked-by: Namhyung Kim <namhyung@...nel.org>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Link: https://lkml.kernel.org/n/tip-o72pyiwt05f3p2juprwmz2jo@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 f22c531be366..fe3ecfb2e64b 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)
 		pr_warning("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;
 }