perf map: Add accessors for ->prot, ->priv and ->flags

Later changes will add reference count checking for 'struct map'. Add an
accessor so that the reference count check is only necessary in one
place.
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Darren Hart <dvhart@infradead.org>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Dmitriy Vyukov <dvyukov@google.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: German Gomez <german.gomez@arm.com>
Cc: Hao Luo <haoluo@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Miaoqian Lin <linmq006@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Riccardo Mancini <rickyman7@gmail.com>
Cc: Shunsuke Nakamura <nakamura.shun@fujitsu.com>
Cc: Song Liu <song@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Stephen Brennan <stephen.s.brennan@oracle.com>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Yury Norov <yury.norov@gmail.com>
Link: https://lore.kernel.org/r/20230404205954.2245628-2-irogers@google.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-inject.c

@@ -758,7 +758,7 @@ int perf_event__inject_buildid(struct perf_tool *tool, union perf_event *event,
 		if (!dso->hit) {
 			dso->hit = 1;
 			dso__inject_build_id(dso, tool, machine,
-					     sample->cpumode, al.map->flags);
+					     sample->cpumode, map__flags(al.map));
 		}
 	}
 

tools/perf/builtin-report.c

@@ -849,13 +849,14 @@ static size_t maps__fprintf_task(struct maps *maps, int indent, FILE *fp)
 	maps__for_each_entry(maps, rb_node) {
 		struct map *map = rb_node->map;
 		const struct dso *dso = map__dso(map);
+		u32 prot = map__prot(map);
 
 		printed += fprintf(fp, "%*s  %" PRIx64 "-%" PRIx64 " %c%c%c%c %08" PRIx64 " %" PRIu64 " %s\n",
 				   indent, "", map__start(map), map__end(map),
-				   map->prot & PROT_READ ? 'r' : '-',
-				   map->prot & PROT_WRITE ? 'w' : '-',
-				   map->prot & PROT_EXEC ? 'x' : '-',
-				   map->flags & MAP_SHARED ? 's' : 'p',
+				   prot & PROT_READ ? 'r' : '-',
+				   prot & PROT_WRITE ? 'w' : '-',
+				   prot & PROT_EXEC ? 'x' : '-',
+				   map__flags(map) ? 's' : 'p',
 				   map->pgoff,
 				   dso->id.ino, dso->name);
 	}

tools/perf/tests/vmlinux-kallsyms.c

@@ -323,7 +323,7 @@ static int test__vmlinux_matches_kallsyms(struct test_suite *test __maybe_unused
 		mem_end = map__unmap_ip(vmlinux_map, map__end(map));
 
 		pair = maps__find(kallsyms.kmaps, mem_start);
-		if (pair == NULL || pair->priv)
+		if (pair == NULL || map__priv(pair))
 			continue;
 
 		if (map__start(pair) == mem_start) {
@@ -351,7 +351,7 @@ static int test__vmlinux_matches_kallsyms(struct test_suite *test __maybe_unused
 	maps__for_each_entry(maps, rb_node) {
 		struct map *map = rb_node->map;
 
-		if (!map->priv) {
+		if (!map__priv(map)) {
 			if (!header_printed) {
 				pr_info("WARN: Maps only in kallsyms:\n");
 				header_printed = true;

tools/perf/util/map.h

@@ -72,6 +72,21 @@ static inline u64 map__end(const struct map *map)
 	return map->end;
 }
 
+static inline u32 map__flags(const struct map *map)
+{
+	return map->flags;
+}
+
+static inline u32 map__prot(const struct map *map)
+{
+	return map->prot;
+}
+
+static inline bool map__priv(const struct map *map)
+{
+	return map->priv;
+}
+
 static inline size_t map__size(const struct map *map)
 {
 	return map__end(map) - map__start(map);

tools/perf/util/sort.c

@@ -1540,7 +1540,7 @@ sort__dcacheline_cmp(struct hist_entry *left, struct hist_entry *right)
 	 */
 
 	if ((left->cpumode != PERF_RECORD_MISC_KERNEL) &&
-	    (!(l_map->flags & MAP_SHARED)) && !l_dso->id.maj && !l_dso->id.min &&
+	    (!(map__flags(l_map) & MAP_SHARED)) && !l_dso->id.maj && !l_dso->id.min &&
 	    !l_dso->id.ino && !l_dso->id.ino_generation) {
 		/* userspace anonymous */
 
@@ -1576,8 +1576,8 @@ static int hist_entry__dcacheline_snprintf(struct hist_entry *he, char *bf,
 
 		/* print [s] for shared data mmaps */
 		if ((he->cpumode != PERF_RECORD_MISC_KERNEL) &&
-		     map && !(map->prot & PROT_EXEC) &&
-		    (map->flags & MAP_SHARED) &&
+		     map && !(map__prot(map) & PROT_EXEC) &&
+		     (map__flags(map) & MAP_SHARED) &&
 		    (dso->id.maj || dso->id.min || dso->id.ino || dso->id.ino_generation))
 			level = 's';
 		else if (!map)

tools/perf/util/symbol.c

@@ -1396,7 +1396,7 @@ static int dso__load_kcore(struct dso *dso, struct map *map,
 	}
 
 	/* Read new maps into temporary lists */
-	err = file__read_maps(fd, map->prot & PROT_EXEC, kcore_mapfn, &md,
+	err = file__read_maps(fd, map__prot(map) & PROT_EXEC, kcore_mapfn, &md,
 			      &is_64_bit);
 	if (err)
 		goto out_err;
@@ -1509,7 +1509,7 @@ static int dso__load_kcore(struct dso *dso, struct map *map,
 
 	close(fd);
 
-	if (map->prot & PROT_EXEC)
+	if (map__prot(map) & PROT_EXEC)
 		pr_debug("Using %s for kernel object code\n", kcore_filename);
 	else
 		pr_debug("Using %s for kernel data\n", kcore_filename);