[PATCH v1 02/13] perf map: API clean up

[Ian Rogers]

map__init is only used internally so make it static. Assume memory is
zero initialized, which will better support adding fields to struct
map in the future and was already the case for map__new2. To reduce
complexity, change set_priv and set_erange_warned to not take a value
to assign as they always assign true.

Signed-off-by: Ian Rogers <irogers@xxxxxxxxxx>
---
 tools/perf/builtin-top.c            |  2 +-
 tools/perf/tests/vmlinux-kallsyms.c |  4 ++--
 tools/perf/util/map.c               | 24 ++++++++++++------------
 tools/perf/util/map.h               | 11 ++++-------
 4 files changed, 19 insertions(+), 22 deletions(-)

diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 881b861c35ee..724a79386321 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -191,7 +191,7 @@ static void ui__warn_map_erange(struct map *map, struct symbol *sym, u64 ip)
 	if (use_browser <= 0)
 		sleep(5);
 
-	map__set_erange_warned(map, true);
+	map__set_erange_warned(map);
 }
 
 static void perf_top__record_precise_ip(struct perf_top *top,
diff --git a/tools/perf/tests/vmlinux-kallsyms.c b/tools/perf/tests/vmlinux-kallsyms.c
index cd3b480d20bd..74cdbd2ce9d0 100644
--- a/tools/perf/tests/vmlinux-kallsyms.c
+++ b/tools/perf/tests/vmlinux-kallsyms.c
@@ -131,7 +131,7 @@ static int test__vmlinux_matches_kallsyms_cb1(struct map *map, void *data)
 					(dso__kernel(dso) ? dso__short_name(dso) : dso__name(dso)));
 
 	if (pair) {
-		map__set_priv(pair, 1);
+		map__set_priv(pair);
 		map__put(pair);
 	} else {
 		if (!args->header_printed) {
@@ -166,7 +166,7 @@ static int test__vmlinux_matches_kallsyms_cb2(struct map *map, void *data)
 			pr_info(":\nWARN: *%" PRIx64 "-%" PRIx64 " %" PRIx64,
 				map__start(pair), map__end(pair), map__pgoff(pair));
 		pr_info(" %s\n", dso__name(dso));
-		map__set_priv(pair, 1);
+		map__set_priv(pair);
 	}
 	map__put(pair);
 	return 0;
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index e1d14936a60d..e781c8d56a9a 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -102,16 +102,20 @@ static inline bool replace_android_lib(const char *filename, char *newfilename)
 	return false;
 }
 
-void map__init(struct map *map, u64 start, u64 end, u64 pgoff, struct dso *dso)
+static void map__init(struct map *map, u64 start, u64 end, u64 pgoff,
+		      struct dso *dso, u32 prot, u32 flags)
 {
 	map__set_start(map, start);
 	map__set_end(map, end);
 	map__set_pgoff(map, pgoff);
-	map__set_reloc(map, 0);
+	assert(map__reloc(map) == 0);
 	map__set_dso(map, dso__get(dso));
-	map__set_mapping_type(map, MAPPING_TYPE__DSO);
-	map__set_erange_warned(map, false);
 	refcount_set(map__refcnt(map), 1);
+	RC_CHK_ACCESS(map)->prot = prot;
+	RC_CHK_ACCESS(map)->flags = flags;
+	map__set_mapping_type(map, MAPPING_TYPE__DSO);
+	assert(map__erange_warned(map) == false);
+	assert(map__priv(map) == false);
 }
 
 struct map *map__new(struct machine *machine, u64 start, u64 len,
@@ -124,7 +128,7 @@ struct map *map__new(struct machine *machine, u64 start, u64 len,
 	struct nsinfo *nsi = NULL;
 	struct nsinfo *nnsi;
 
-	map = malloc(sizeof(*map));
+	map = zalloc(sizeof(*map));
 	if (ADD_RC_CHK(result, map)) {
 		char newfilename[PATH_MAX];
 		struct dso *dso, *header_bid_dso;
@@ -134,8 +138,6 @@ struct map *map__new(struct machine *machine, u64 start, u64 len,
 		anon = is_anon_memory(filename) || flags & MAP_HUGETLB;
 		vdso = is_vdso_map(filename);
 		no_dso = is_no_dso_memory(filename);
-		map->prot = prot;
-		map->flags = flags;
 		nsi = nsinfo__get(thread__nsinfo(thread));
 
 		if ((anon || no_dso) && nsi && (prot & PROT_EXEC)) {
@@ -169,7 +171,7 @@ struct map *map__new(struct machine *machine, u64 start, u64 len,
 			goto out_delete;
 
 		assert(!dso__kernel(dso));
-		map__init(result, start, start + len, pgoff, dso);
+		map__init(result, start, start + len, pgoff, dso, prot, flags);
 
 		if (anon || no_dso) {
 			map->mapping_type = MAPPING_TYPE__IDENTITY;
@@ -223,10 +225,8 @@ struct map *map__new2(u64 start, struct dso *dso)
 
 	map = calloc(1, sizeof(*map) + (dso__kernel(dso) ? sizeof(struct kmap) : 0));
 	if (ADD_RC_CHK(result, map)) {
-		/*
-		 * ->end will be filled after we load all the symbols
-		 */
-		map__init(result, start, 0, 0, dso);
+		/* ->end will be filled after we load all the symbols. */
+		map__init(result, start, /*end=*/0, /*pgoff=*/0, dso, /*prot=*/0, /*flags=*/0);
 	}
 
 	return result;
diff --git a/tools/perf/util/map.h b/tools/perf/util/map.h
index 65e2609fa1b1..6c43f31a9fe0 100644
--- a/tools/perf/util/map.h
+++ b/tools/perf/util/map.h
@@ -166,9 +166,6 @@ struct thread;
 #define map__for_each_symbol_by_name(map, sym_name, pos, idx)	\
 	__map__for_each_symbol_by_name(map, sym_name, (pos), idx)
 
-void map__init(struct map *map,
-	       u64 start, u64 end, u64 pgoff, struct dso *dso);
-
 struct dso_id;
 struct build_id;
 
@@ -285,14 +282,14 @@ static inline void map__set_reloc(struct map *map, u64 reloc)
 	RC_CHK_ACCESS(map)->reloc = reloc;
 }
 
-static inline void map__set_priv(struct map *map, int priv)
+static inline void map__set_priv(struct map *map)
 {
-	RC_CHK_ACCESS(map)->priv = priv;
+	RC_CHK_ACCESS(map)->priv = true;
 }
 
-static inline void map__set_erange_warned(struct map *map, bool erange_warned)
+static inline void map__set_erange_warned(struct map *map)
 {
-	RC_CHK_ACCESS(map)->erange_warned = erange_warned;
+	RC_CHK_ACCESS(map)->erange_warned = true;
 }
 
 static inline void map__set_dso(struct map *map, struct dso *dso)
-- 
2.46.0.184.g6999bdac58-goog