Merge branches 'pm-core', 'pm-qos', 'pm-domains' and 'pm-opp'

[linux.git] / tools / lib / bpf / libbpf.c

diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 6a8c8beeb291921dd79a4782a8c66c23d58c3efd..ac6eb863b2a40df00c4ead9f48c872ab67949c19 100644 (file)
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -1379,6 +1379,59 @@ int bpf_map__pin(struct bpf_map *map, const char *path)
        return 0;
 }
 
+int bpf_object__pin(struct bpf_object *obj, const char *path)
+{
+       struct bpf_program *prog;
+       struct bpf_map *map;
+       int err;
+
+       if (!obj)
+               return -ENOENT;
+
+       if (!obj->loaded) {
+               pr_warning("object not yet loaded; load it first\n");
+               return -ENOENT;
+       }
+
+       err = make_dir(path);
+       if (err)
+               return err;
+
+       bpf_map__for_each(map, obj) {
+               char buf[PATH_MAX];
+               int len;
+
+               len = snprintf(buf, PATH_MAX, "%s/%s", path,
+                              bpf_map__name(map));
+               if (len < 0)
+                       return -EINVAL;
+               else if (len >= PATH_MAX)
+                       return -ENAMETOOLONG;
+
+               err = bpf_map__pin(map, buf);
+               if (err)
+                       return err;
+       }
+
+       bpf_object__for_each_program(prog, obj) {
+               char buf[PATH_MAX];
+               int len;
+
+               len = snprintf(buf, PATH_MAX, "%s/%s", path,
+                              prog->section_name);
+               if (len < 0)
+                       return -EINVAL;
+               else if (len >= PATH_MAX)
+                       return -ENAMETOOLONG;
+
+               err = bpf_program__pin(prog, buf);
+               if (err)
+                       return err;
+       }
+
+       return 0;
+}
+
 void bpf_object__close(struct bpf_object *obj)
 {
        size_t i;