1 files changed, 73 insertions, 1 deletions

diff --git a/tools/perf/util/block-info.c b/tools/perf/util/block-info.c
index 597d1205fa6c..9abc201ebe63 100644
--- a/tools/perf/util/block-info.c
+++ b/tools/perf/util/block-info.c
@@ -10,6 +10,7 @@
 #include "map.h"
 #include "srcline.h"
 #include "evlist.h"
+#include "ui/browsers/hists.h"
 
 static struct block_header_column {
 	const char *name;
@@ -438,9 +439,75 @@ struct block_report *block_info__create_report(struct evlist *evlist,
 	return block_reports;
 }
 
+#ifdef HAVE_SLANG_SUPPORT
+static int block_hists_browser__title(struct hist_browser *browser, char *bf,
+				      size_t size)
+{
+	struct hists *hists = evsel__hists(browser->block_evsel);
+	const char *evname = perf_evsel__name(browser->block_evsel);
+	unsigned long nr_samples = hists->stats.nr_events[PERF_RECORD_SAMPLE];
+	int ret;
+
+	ret = scnprintf(bf, size, "# Samples: %lu", nr_samples);
+	if (evname)
+		scnprintf(bf + ret, size -  ret, " of event '%s'", evname);
+
+	return 0;
+}
+
+static int block_hists_tui_browse(struct block_hist *bh, struct evsel *evsel,
+				  float min_percent)
+{
+	struct hists *hists = &bh->block_hists;
+	struct hist_browser *browser;
+	int key = -1;
+	static const char help[] =
+	" q             Quit \n";
+
+	browser = hist_browser__new(hists);
+	if (!browser)
+		return -1;
+
+	browser->block_evsel = evsel;
+	browser->title = block_hists_browser__title;
+	browser->min_pcnt = min_percent;
+
+	/* reset abort key so that it can get Ctrl-C as a key */
+	SLang_reset_tty();
+	SLang_init_tty(0, 0, 0);
+
+	while (1) {
+		key = hist_browser__run(browser, "? - help", true);
+
+		switch (key) {
+		case 'q':
+			goto out;
+		case '?':
+			ui_browser__help_window(&browser->b, help);
+			break;
+		default:
+			break;
+		}
+	}
+
+out:
+	hist_browser__delete(browser);
+	return 0;
+}
+#else
+static int block_hists_tui_browse(struct block_hist *bh __maybe_unused,
+				  struct evsel *evsel __maybe_unused,
+				  float min_percent __maybe_unused)
+{
+	return 0;
+}
+#endif
+
 int report__browse_block_hists(struct block_hist *bh, float min_percent,
-			       struct evsel *evsel __maybe_unused)
+			       struct evsel *evsel)
 {
+	int ret;
+
 	switch (use_browser) {
 	case 0:
 		symbol_conf.report_individual_block = true;
@@ -448,6 +515,11 @@ int report__browse_block_hists(struct block_hist *bh, float min_percent,
 			       stdout, true);
 		hists__delete_entries(&bh->block_hists);
 		return 0;
+	case 1:
+		symbol_conf.report_individual_block = true;
+		ret = block_hists_tui_browse(bh, evsel, min_percent);
+		hists__delete_entries(&bh->block_hists);
+		return ret;
 	default:
 		return -1;
 	}