linux-kernel - [PATCH] perf annotate: Fix data type profiling on stdio

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Date: Mon, 22 Apr 2024 19:06:43 -0700
From: Namhyung Kim <namhyung@...nel.org>
To: Arnaldo Carvalho de Melo <acme@...nel.org>,
	Ian Rogers <irogers@...gle.com>,
	Kan Liang <kan.liang@...ux.intel.com>
Cc: Jiri Olsa <jolsa@...nel.org>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	linux-perf-users@...r.kernel.org
Subject: [PATCH] perf annotate: Fix data type profiling on stdio

The loop in hists__find_annotations() never set the 'nd' pointer to NULL
and it makes stdio output repeating the last element forever.  I think
it doesn't set to NULL for TUI to prevent it from exiting unexpectedly.
But it should just set on stdio mode.

Fixes: d001c7a7f473 ("perf annotate-data: Add hist_entry__annotate_data_tui()")
Signed-off-by: Namhyung Kim <namhyung@...nel.org>
---
 tools/perf/builtin-annotate.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 6f7104f06c42..83812b9d5363 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -491,7 +491,7 @@ static void hists__find_annotations(struct hists *hists,
 				return;
 			}
 
-			if (next != NULL)
+			if (use_browser == 0 || next != NULL)
 				nd = next;
 
 			continue;
-- 
2.44.0.769.g3c40516874-goog