[PATCH v5 22/50] perf maps: Add find next entry to give entry after the given map

[Ian Rogers]

Use to remove map_rb_node use from machine.c.

Signed-off-by: Ian Rogers <irogers@xxxxxxxxxx>
---
 tools/perf/util/machine.c |  7 +++----
 tools/perf/util/maps.c    | 11 +++++++++++
 tools/perf/util/maps.h    |  2 ++
 3 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index 191e492539e5..ab345604f274 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -1759,12 +1759,11 @@ int machine__create_kernel_maps(struct machine *machine)
 
 	if (end == ~0ULL) {
 		/* update end address of the kernel map using adjacent module address */
-		struct map_rb_node *rb_node = maps__find_node(machine__kernel_maps(machine),
-							machine__kernel_map(machine));
-		struct map_rb_node *next = map_rb_node__next(rb_node);
+		struct map *next = maps__find_next_entry(machine__kernel_maps(machine),
+							 machine__kernel_map(machine));
 
 		if (next)
-			machine__set_kernel_mmap(machine, start, map__start(next->map));
+			machine__set_kernel_mmap(machine, start, map__start(next));
 	}
 
 out_put:
diff --git a/tools/perf/util/maps.c b/tools/perf/util/maps.c
index 9a84d26328a7..38d56709bd5e 100644
--- a/tools/perf/util/maps.c
+++ b/tools/perf/util/maps.c
@@ -662,6 +662,17 @@ struct map *maps__find_by_name(struct maps *maps, const char *name)
 	return map;
 }
 
+struct map *maps__find_next_entry(struct maps *maps, struct map *map)
+{
+	struct map_rb_node *rb_node = maps__find_node(maps, map);
+	struct map_rb_node *next = map_rb_node__next(rb_node);
+
+	if (next)
+		return next->map;
+
+	return NULL;
+}
+
 void maps__fixup_end(struct maps *maps)
 {
 	struct map_rb_node *prev = NULL, *curr;
diff --git a/tools/perf/util/maps.h b/tools/perf/util/maps.h
index b7ab3ec61b7c..84b42c8456e8 100644
--- a/tools/perf/util/maps.h
+++ b/tools/perf/util/maps.h
@@ -136,6 +136,8 @@ int maps__fixup_overlap_and_insert(struct maps *maps, struct map *new);
 
 struct map *maps__find_by_name(struct maps *maps, const char *name);
 
+struct map *maps__find_next_entry(struct maps *maps, struct map *map);
+
 int maps__merge_in(struct maps *kmaps, struct map *new_map);
 
 void __maps__sort_by_name(struct maps *maps);
-- 
2.43.0.rc1.413.gea7ed67945-goog