perf maps: Merge 'struct maps' with 'struct map_groups'

And pick the shortest name: 'struct maps'.

The split existed because we used to have two groups of maps, one for
functions and one for variables, but that only complicated things,
sometimes we needed to figure out what was at some address and then had
to first try it on the functions group and if that failed, fall back to
the variables one.

That split is long gone, so for quite a while we had only one struct
maps per struct map_groups, simplify things by combining those structs.

First patch is the minimum needed to merge both, follow up patches will
rename 'thread->mg' to 'thread->maps', etc.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-hom6639ro7020o708trhxh59@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 37 insertions, 68 deletions

diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index 267d951b5dfd..4c9fd064028f 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -512,15 +512,10 @@ u64 map__objdump_2mem(struct map *map, u64 ip)
 	return ip + map->reloc;
 }
 
-static void maps__init(struct maps *maps)
+void maps__init(struct maps *mg, struct machine *machine)
 {
-	maps->entries = RB_ROOT;
-	init_rwsem(&maps->lock);
-}
-
-void map_groups__init(struct map_groups *mg, struct machine *machine)
-{
-	maps__init(&mg->maps);
+	mg->entries = RB_ROOT;
+	init_rwsem(&mg->lock);
 	mg->machine = machine;
 	mg->last_search_by_name = NULL;
 	mg->nr_maps = 0;
@@ -528,7 +523,7 @@ void map_groups__init(struct map_groups *mg, struct machine *machine)
 	refcount_set(&mg->refcnt, 1);
 }
 
-static void __map_groups__free_maps_by_name(struct map_groups *mg)
+static void __maps__free_maps_by_name(struct maps *mg)
 {
 	/*
 	 * Free everything to try to do it from the rbtree in the next search
@@ -537,9 +532,9 @@ static void __map_groups__free_maps_by_name(struct map_groups *mg)
 	mg->nr_maps_allocated = 0;
 }
 
-void map_groups__insert(struct map_groups *mg, struct map *map)
+void maps__insert(struct maps *mg, struct map *map)
 {
-	struct maps *maps = &mg->maps;
+	struct maps *maps = mg;
 
 	down_write(&maps->lock);
 	__maps__insert(maps, map);
@@ -555,7 +550,7 @@ void map_groups__insert(struct map_groups *mg, struct map *map)
 			struct map **maps_by_name = realloc(mg->maps_by_name, nr_allocate * sizeof(map));
 
 			if (maps_by_name == NULL) {
-				__map_groups__free_maps_by_name(mg);
+				__maps__free_maps_by_name(maps);
 				return;
 			}
 
@@ -563,7 +558,7 @@ void map_groups__insert(struct map_groups *mg, struct map *map)
 			mg->nr_maps_allocated = nr_allocate;
 		}
 		mg->maps_by_name[mg->nr_maps - 1] = map;
-		__map_groups__sort_by_name(mg);
+		__maps__sort_by_name(maps);
 	}
 	up_write(&maps->lock);
 }
@@ -574,9 +569,9 @@ static void __maps__remove(struct maps *maps, struct map *map)
 	map__put(map);
 }
 
-void map_groups__remove(struct map_groups *mg, struct map *map)
+void maps__remove(struct maps *mg, struct map *map)
 {
-	struct maps *maps = &mg->maps;
+	struct maps *maps = mg;
 	down_write(&maps->lock);
 	if (mg->last_search_by_name == map)
 		mg->last_search_by_name = NULL;
@@ -584,7 +579,7 @@ void map_groups__remove(struct map_groups *mg, struct map *map)
 	__maps__remove(maps, map);
 	--mg->nr_maps;
 	if (mg->maps_by_name)
-		__map_groups__free_maps_by_name(mg);
+		__maps__free_maps_by_name(maps);
 	up_write(&maps->lock);
 }
 
@@ -598,50 +593,44 @@ static void __maps__purge(struct maps *maps)
 	}
 }
 
-static void maps__exit(struct maps *maps)
+void maps__exit(struct maps *maps)
 {
 	down_write(&maps->lock);
 	__maps__purge(maps);
 	up_write(&maps->lock);
 }
 
-void map_groups__exit(struct map_groups *mg)
+bool maps__empty(struct maps *maps)
 {
-	maps__exit(&mg->maps);
+	return !maps__first(maps);
 }
 
-bool map_groups__empty(struct map_groups *mg)
+struct maps *maps__new(struct machine *machine)
 {
-	return !maps__first(&mg->maps);
-}
-
-struct map_groups *map_groups__new(struct machine *machine)
-{
-	struct map_groups *mg = zalloc(sizeof(*mg));
+	struct maps *mg = zalloc(sizeof(*mg)), *maps = mg;
 
 	if (mg != NULL)
-		map_groups__init(mg, machine);
+		maps__init(maps, machine);
 
 	return mg;
 }
 
-void map_groups__delete(struct map_groups *mg)
+void maps__delete(struct maps *mg)
 {
-	map_groups__exit(mg);
+	maps__exit(mg);
 	unwind__finish_access(mg);
 	free(mg);
 }
 
-void map_groups__put(struct map_groups *mg)
+void maps__put(struct maps *mg)
 {
 	if (mg && refcount_dec_and_test(&mg->refcnt))
-		map_groups__delete(mg);
+		maps__delete(mg);
 }
 
-struct symbol *map_groups__find_symbol(struct map_groups *mg,
-				       u64 addr, struct map **mapp)
+struct symbol *maps__find_symbol(struct maps *mg, u64 addr, struct map **mapp)
 {
-	struct map *map = map_groups__find(mg, addr);
+	struct map *map = maps__find(mg, addr);
 
 	/* Ensure map is loaded before using map->map_ip */
 	if (map != NULL && map__load(map) >= 0) {
@@ -660,8 +649,7 @@ static bool map__contains_symbol(struct map *map, struct symbol *sym)
 	return ip >= map->start && ip < map->end;
 }
 
-static struct symbol *maps__find_symbol_by_name(struct maps *maps, const char *name,
-						struct map **mapp)
+struct symbol *maps__find_symbol_by_name(struct maps *maps, const char *name, struct map **mapp)
 {
 	struct symbol *sym;
 	struct map *pos;
@@ -688,19 +676,12 @@ out:
 	return sym;
 }
 
-struct symbol *map_groups__find_symbol_by_name(struct map_groups *mg,
-					       const char *name,
-					       struct map **mapp)
-{
-	return maps__find_symbol_by_name(&mg->maps, name, mapp);
-}
-
-int map_groups__find_ams(struct map_groups *mg, struct addr_map_symbol *ams)
+int maps__find_ams(struct maps *mg, struct addr_map_symbol *ams)
 {
 	if (ams->addr < ams->ms.map->start || ams->addr >= ams->ms.map->end) {
 		if (mg == NULL)
 			return -1;
-		ams->ms.map = map_groups__find(mg, ams->addr);
+		ams->ms.map = maps__find(mg, ams->addr);
 		if (ams->ms.map == NULL)
 			return -1;
 	}
@@ -711,7 +692,7 @@ int map_groups__find_ams(struct map_groups *mg, struct addr_map_symbol *ams)
 	return ams->ms.sym ? 0 : -1;
 }
 
-static size_t maps__fprintf(struct maps *maps, FILE *fp)
+size_t maps__fprintf(struct maps *maps, FILE *fp)
 {
 	size_t printed = 0;
 	struct map *pos;
@@ -732,19 +713,8 @@ static size_t maps__fprintf(struct maps *maps, FILE *fp)
 	return printed;
 }
 
-size_t map_groups__fprintf(struct map_groups *mg, FILE *fp)
+int maps__fixup_overlappings(struct maps *maps, struct map *map, FILE *fp)
 {
-	return maps__fprintf(&mg->maps, fp);
-}
-
-static void __map_groups__insert(struct map_groups *mg, struct map *map)
-{
-	__maps__insert(&mg->maps, map);
-}
-
-int map_groups__fixup_overlappings(struct map_groups *mg, struct map *map, FILE *fp)
-{
-	struct maps *maps = &mg->maps;
 	struct rb_root *root;
 	struct rb_node *next, *first;
 	int err = 0;
@@ -809,7 +779,7 @@ int map_groups__fixup_overlappings(struct map_groups *mg, struct map *map, FILE
 			}
 
 			before->end = map->start;
-			__map_groups__insert(mg, before);
+			__maps__insert(maps, before);
 			if (verbose >= 2 && !use_browser)
 				map__fprintf(before, fp);
 			map__put(before);
@@ -826,7 +796,7 @@ int map_groups__fixup_overlappings(struct map_groups *mg, struct map *map, FILE
 			after->start = map->end;
 			after->pgoff += map->end - pos->start;
 			assert(pos->map_ip(pos, map->end) == after->map_ip(after, map->end));
-			__map_groups__insert(mg, after);
+			__maps__insert(maps, after);
 			if (verbose >= 2 && !use_browser)
 				map__fprintf(after, fp);
 			map__put(after);
@@ -847,16 +817,15 @@ out:
 /*
  * XXX This should not really _copy_ te maps, but refcount them.
  */
-int map_groups__clone(struct thread *thread, struct map_groups *parent)
+int maps__clone(struct thread *thread, struct maps *parent)
 {
-	struct map_groups *mg = thread->mg;
+	struct maps *mg = thread->mg;
 	int err = -ENOMEM;
 	struct map *map;
-	struct maps *maps = &parent->maps;
 
-	down_read(&maps->lock);
+	down_read(&parent->lock);
 
-	maps__for_each_entry(maps, map) {
+	maps__for_each_entry(parent, map) {
 		struct map *new = map__clone(map);
 		if (new == NULL)
 			goto out_unlock;
@@ -865,13 +834,13 @@ int map_groups__clone(struct thread *thread, struct map_groups *parent)
 		if (err)
 			goto out_unlock;
 
-		map_groups__insert(mg, new);
+		maps__insert(mg, new);
 		map__put(new);
 	}
 
 	err = 0;
 out_unlock:
-	up_read(&maps->lock);
+	up_read(&parent->lock);
 	return err;
 }
 
@@ -959,7 +928,7 @@ struct kmap *map__kmap(struct map *map)
 	return kmap;
 }
 
-struct map_groups *map__kmaps(struct map *map)
+struct maps *map__kmaps(struct map *map)
 {
 	struct kmap *kmap = map__kmap(map);