linux-kernel - [PATCH 1/4] perf annotate: Make sure to call symbol_

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Date: Fri,  5 Apr 2024 14:17:57 -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 1/4] perf annotate: Make sure to call symbol__annotate2() in TUI

The symbol__annotate2() initializes some data structures needed by TUI.
It has a logic to prevent calling it multiple times by checking if it
has the annotated source.  But data type profiling uses a different
code (symbol__annotate) to allocate the annotated lines in advance.
So TUI missed to call symbol__annotate2() when it shows the annotation
browser.

Make symbol__annotate() reentrant and handle that situation properly.
This fixes a crash in the annotation browser started by perf report in
TUI like below.

  $ perf report -s type,sym --tui
  # and press 'a' key and then move down

Fixes: 81e57deec325 ("perf report: Support data type profiling")
Signed-off-by: Namhyung Kim <namhyung@...nel.org>
---
 tools/perf/ui/browsers/annotate.c | 2 +-
 tools/perf/util/annotate.c        | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/tools/perf/ui/browsers/annotate.c b/tools/perf/ui/browsers/annotate.c
index ec5e21932876..4790c735599b 100644
--- a/tools/perf/ui/browsers/annotate.c
+++ b/tools/perf/ui/browsers/annotate.c
@@ -970,7 +970,7 @@ int symbol__tui_annotate(struct map_symbol *ms, struct evsel *evsel,
 	if (dso->annotate_warned)
 		return -1;
 
-	if (not_annotated) {
+	if (not_annotated || !sym->annotate2) {
 		err = symbol__annotate2(ms, evsel, &browser.arch);
 		if (err) {
 			char msg[BUFSIZ];
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index 35235147b111..ded9ad86df00 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -879,6 +879,9 @@ int symbol__annotate(struct map_symbol *ms, struct evsel *evsel,
 	if (parch)
 		*parch = arch;
 
+	if (!list_empty(&notes->src->source))
+		return 0;
+
 	args.arch = arch;
 	args.ms = *ms;
 	if (annotate_opts.full_addr)
-- 
2.44.0.478.gd926399ef9-goog