ebpf: constify various function pointer structs

We can move bpf_map_ops and bpf_verifier_ops and other structs into ro
section, bpf_map_type_list and bpf_prog_type_list into read mostly.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 3 deletions

diff --git a/kernel/bpf/hashtab.c b/kernel/bpf/hashtab.c
index b3ba43674310..83c209d9b17a 100644
--- a/kernel/bpf/hashtab.c
+++ b/kernel/bpf/hashtab.c
@@ -345,7 +345,7 @@ static void htab_map_free(struct bpf_map *map)
         kfree(htab);
 }
 
-static struct bpf_map_ops htab_ops = {
+static const struct bpf_map_ops htab_ops = {
         .map_alloc = htab_map_alloc,
         .map_free = htab_map_free,
         .map_get_next_key = htab_map_get_next_key,
@@ -354,14 +354,14 @@ static struct bpf_map_ops htab_ops = {
         .map_delete_elem = htab_map_delete_elem,
 };
 
-static struct bpf_map_type_list tl = {
+static struct bpf_map_type_list htab_type __read_mostly = {
         .ops = &htab_ops,
         .type = BPF_MAP_TYPE_HASH,
 };
 
 static int __init register_htab_map(void)
 {
-        bpf_register_map_type(&tl);
+        bpf_register_map_type(&htab_type);
         return 0;
 }
 late_initcall(register_htab_map);