linux-kernel - [PATCH] perf: dynamically change verbosity level in perf top

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Message-Id: <20161012214823.14324-2-alexis.berlemont@gmail.com>
Date:   Wed, 12 Oct 2016 23:48:23 +0200
From:   Alexis Berlemont <alexis.berlemont@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     Alexis Berlemont <alexis.berlemont@...il.com>,
        peterz@...radead.org, mingo@...hat.com, acme@...nel.org,
        alexander.shishkin@...ux.intel.com
Subject: [PATCH] perf: dynamically change verbosity level in perf top

Signed-off-by: Alexis Berlemont <alexis.berlemont@...il.com>
---
 tools/perf/ui/browsers/hists.c |  5 ++++-
 tools/perf/util/map.c          | 17 ++++++++++++-----
 2 files changed, 16 insertions(+), 6 deletions(-)

diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index fb8e42c..6016909 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -2806,7 +2806,10 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
 			do_zoom_dso(browser, actions);
 			continue;
 		case 'V':
-			browser->show_dso = !browser->show_dso;
+			verbose = (verbose + 1) % 4;
+			browser->show_dso = verbose > 0;
+			ui_helpline__fpush("Verbosity level set to %d\n",
+					   verbose);
 			continue;
 		case 't':
 			actions->thread = thread;
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index c662fef..4f9a71c 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -682,9 +682,16 @@ static int maps__fixup_overlappings(struct maps *maps, struct map *map, FILE *fp
 			continue;
 
 		if (verbose >= 2) {
-			fputs("overlapping maps:\n", fp);
-			map__fprintf(map, fp);
-			map__fprintf(pos, fp);
+
+			if (use_browser) {
+				pr_warning("overlapping maps in %s "
+					   "(disable tui for more info)\n",
+					   map->dso->name);
+			} else {
+				fputs("overlapping maps:\n", fp);
+				map__fprintf(map, fp);
+				map__fprintf(pos, fp);
+			}
 		}
 
 		rb_erase_init(&pos->rb_node, root);
@@ -702,7 +709,7 @@ static int maps__fixup_overlappings(struct maps *maps, struct map *map, FILE *fp
 
 			before->end = map->start;
 			__map_groups__insert(pos->groups, before);
-			if (verbose >= 2)
+			if (verbose >= 2 && !use_browser)
 				map__fprintf(before, fp);
 			map__put(before);
 		}
@@ -717,7 +724,7 @@ static int maps__fixup_overlappings(struct maps *maps, struct map *map, FILE *fp
 
 			after->start = map->end;
 			__map_groups__insert(pos->groups, after);
-			if (verbose >= 2)
+			if (verbose >= 2 && !use_browser)
 				map__fprintf(after, fp);
 			map__put(after);
 		}
-- 
2.10.0