perf symbols: Remove open coded management of long_name_allocated member

Instead of expecting callers to set this member accodingly so that later
at dso destruction it can, if needed, be correctly free()d, make it a
requirement by passing it as a parameter to dso__set_long_name.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-na7t1tqim22vuqkt4zq5n4ri@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

5 files changed, 16 insertions, 13 deletions

diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c
index f8c849767c4d..ecb37d62f814 100644
--- a/tools/perf/util/dso.c
+++ b/tools/perf/util/dso.c
@@ -386,12 +386,17 @@ struct dso *dso__kernel_findnew(struct machine *machine, const char *name,
         return dso;
 }
 
-void dso__set_long_name(struct dso *dso, char *name)
+void dso__set_long_name(struct dso *dso, char *name, bool name_allocated)
 {
         if (name == NULL)
                 return;
-        dso->long_name = name;
-        dso->long_name_len = strlen(name);
+
+        if (dso->long_name_allocated)
+                free(dso->long_name);
+
+        dso->long_name           = name;
+        dso->long_name_len       = strlen(name);
+        dso->long_name_allocated = name_allocated;
 }
 
 void dso__set_short_name(struct dso *dso, const char *name, bool name_allocated)
@@ -444,7 +449,7 @@ struct dso *dso__new(const char *name)
         if (dso != NULL) {
                 int i;
                 strcpy(dso->name, name);
-                dso__set_long_name(dso, dso->name);
+                dso__set_long_name(dso, dso->name, false);
                 dso__set_short_name(dso, dso->name, false);
                 for (i = 0; i < MAP__NR_TYPES; ++i)
                         dso->symbols[i] = dso->symbol_names[i] = RB_ROOT;
diff --git a/tools/perf/util/dso.h b/tools/perf/util/dso.h
index 8eceab78088f..7b434691525a 100644
--- a/tools/perf/util/dso.h
+++ b/tools/perf/util/dso.h
@@ -111,7 +111,7 @@ struct dso *dso__new(const char *name);
 void dso__delete(struct dso *dso);
 
 void dso__set_short_name(struct dso *dso, const char *name, bool name_allocated);
-void dso__set_long_name(struct dso *dso, char *name);
+void dso__set_long_name(struct dso *dso, char *name, bool name_allocated);
 
 int dso__name_len(const struct dso *dso);
 
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index 09d5c66d4087..751454bcde69 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -763,8 +763,7 @@ static int map_groups__set_modules_path_dir(struct map_groups *mg,
                                 ret = -1;
                                 goto out;
                         }
-                        dso__set_long_name(map->dso, long_name);
-                        map->dso->long_name_allocated = 1;
+                        dso__set_long_name(map->dso, long_name, true);
                         dso__kernel_module_get_build_id(map->dso, "");
                 }
         }
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 9a5de8837d6d..5029ee1a9421 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -1159,7 +1159,7 @@ static int dso__load_kcore(struct dso *dso, struct map *map,
                 dso->data_type = DSO_BINARY_TYPE__GUEST_KCORE;
         else
                 dso->data_type = DSO_BINARY_TYPE__KCORE;
-        dso__set_long_name(dso, strdup(kcore_filename));
+        dso__set_long_name(dso, strdup(kcore_filename), true);
 
         close(fd);
 
@@ -1438,8 +1438,7 @@ int dso__load_vmlinux(struct dso *dso, struct map *map,
                         dso->data_type = DSO_BINARY_TYPE__GUEST_VMLINUX;
                 else
                         dso->data_type = DSO_BINARY_TYPE__VMLINUX;
-                dso__set_long_name(dso, (char *)vmlinux);
-                dso->long_name_allocated = vmlinux_allocated;
+                dso__set_long_name(dso, (char *)vmlinux, vmlinux_allocated);
                 dso__set_loaded(dso, map->type);
                 pr_debug("Using %s for symbols\n", symfs_vmlinux);
         }
@@ -1631,7 +1630,7 @@ do_kallsyms:
         free(kallsyms_allocated_filename);
 
         if (err > 0 && !dso__is_kcore(dso)) {
-                dso__set_long_name(dso, strdup("[kernel.kallsyms]"));
+                dso__set_long_name(dso, strdup("[kernel.kallsyms]"), true);
                 map__fixup_start(map);
                 map__fixup_end(map);
         }
@@ -1679,7 +1678,7 @@ static int dso__load_guest_kernel_sym(struct dso *dso, struct map *map,
                 pr_debug("Using %s for symbols\n", kallsyms_filename);
         if (err > 0 && !dso__is_kcore(dso)) {
                 machine__mmap_name(machine, path, sizeof(path));
-                dso__set_long_name(dso, strdup(path));
+                dso__set_long_name(dso, strdup(path), true);
                 map__fixup_start(map);
                 map__fixup_end(map);
         }
diff --git a/tools/perf/util/vdso.c b/tools/perf/util/vdso.c
index 39159822d58f..0ddb3b8a89ec 100644
--- a/tools/perf/util/vdso.c
+++ b/tools/perf/util/vdso.c
@@ -103,7 +103,7 @@ struct dso *vdso__dso_findnew(struct list_head *head)
                 dso = dso__new(VDSO__MAP_NAME);
                 if (dso != NULL) {
                         dsos__add(head, dso);
-                        dso__set_long_name(dso, file);
+                        dso__set_long_name(dso, file, false);
                 }
         }