linux-kernel - [PATCH 2/6] perf maps: Set the kmaps for newly created/added kernel maps

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Message-ID: <20250227215455.30514-3-acme@kernel.org>
Date: Thu, 27 Feb 2025 18:54:51 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: Namhyung Kim <namhyung@...nel.org>
Cc: Ingo Molnar <mingo@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	James Clark <james.clark@...aro.org>,
	Jiri Olsa <jolsa@...nel.org>,
	Ian Rogers <irogers@...gle.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Kan Liang <kan.liang@...ux.intel.com>,
	Clark Williams <williams@...hat.com>,
	linux-kernel@...r.kernel.org,
	linux-perf-users@...r.kernel.org,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Stephane Eranian <eranian@...gle.com>
Subject: [PATCH 2/6] perf maps: Set the kmaps for newly created/added kernel maps

From: Arnaldo Carvalho de Melo <acme@...hat.com>

When using __maps__insert_sorted() the map kmaps field needs to be
initialized, as we need kernel maps to work with map__kmap().

Fix it by using the newly introduced map__set_kmap() method.

Acked-by: Namhyung Kim <namhyung@...nel.org>
Cc: Adrian Hunter <adrian.hunter@...el.com>
Cc: Ian Rogers <irogers@...gle.com>
Cc: Ingo Molnar <mingo@...nel.org>
Cc: James Clark <james.clark@...aro.org>
Cc: Jiri Olsa <jolsa@...nel.org>
Cc: Kan Liang <kan.liang@...ux.intel.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Stephane Eranian <eranian@...gle.com>
Link: https://lore.kernel.org/lkml/Z74V0hZXrTLM6VIJ@x1
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/maps.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/perf/util/maps.c b/tools/perf/util/maps.c
index e21d29f5df01c6f7..dec2e04696c9097e 100644
--- a/tools/perf/util/maps.c
+++ b/tools/perf/util/maps.c
@@ -798,6 +798,9 @@ static int __maps__insert_sorted(struct maps *maps, unsigned int first_after_ind
 	}
 	RC_CHK_ACCESS(maps)->nr_maps = nr_maps + to_add;
 	maps__set_maps_by_name_sorted(maps, false);
+	map__set_kmap(new1, maps);
+	map__set_kmap(new2, maps);
+
 	check_invariants(maps);
 	return 0;
 }
-- 
2.47.0