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>
diff --git a/kernel/bpf/arraymap.c b/kernel/bpf/arraymap.c
index 9eb4d8a..8a66165 100644
--- a/kernel/bpf/arraymap.c
+++ b/kernel/bpf/arraymap.c
@@ -134,7 +134,7 @@
kvfree(array);
}
-static struct bpf_map_ops array_ops = {
+static const struct bpf_map_ops array_ops = {
.map_alloc = array_map_alloc,
.map_free = array_map_free,
.map_get_next_key = array_map_get_next_key,
@@ -143,14 +143,14 @@
.map_delete_elem = array_map_delete_elem,
};
-static struct bpf_map_type_list tl = {
+static struct bpf_map_type_list array_type __read_mostly = {
.ops = &array_ops,
.type = BPF_MAP_TYPE_ARRAY,
};
static int __init register_array_map(void)
{
- bpf_register_map_type(&tl);
+ bpf_register_map_type(&array_type);
return 0;
}
late_initcall(register_array_map);