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authorDaniel Borkmann <daniel@iogearbox.net>2017-02-17 00:24:48 +0300
committerDavid S. Miller <davem@davemloft.net>2017-02-17 21:40:04 +0300
commitc78f8bdfa11fcceb9723c61212e4bd8f76c87f9e (patch)
tree456eca6a892aea9e8cd9fec3b9ca6b380112d7b2 /kernel/bpf/lpm_trie.c
parentafcb50ba7f745eea32f91d7f63d6aa88f929f9c4 (diff)
downloadlinux-c78f8bdfa11fcceb9723c61212e4bd8f76c87f9e.tar.xz
bpf: mark all registered map/prog types as __ro_after_init
All map types and prog types are registered to the BPF core through bpf_register_map_type() and bpf_register_prog_type() during init and remain unchanged thereafter. As by design we don't (and never will) have any pluggable code that can register to that at any later point in time, lets mark all the existing bpf_{map,prog}_type_list objects in the tree as __ro_after_init, so they can be moved to read-only section from then onwards. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/bpf/lpm_trie.c')
-rw-r--r--kernel/bpf/lpm_trie.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/bpf/lpm_trie.c b/kernel/bpf/lpm_trie.c
index e0f6a0bd279b..8bfe0afaee10 100644
--- a/kernel/bpf/lpm_trie.c
+++ b/kernel/bpf/lpm_trie.c
@@ -508,7 +508,7 @@ static const struct bpf_map_ops trie_ops = {
.map_delete_elem = trie_delete_elem,
};
-static struct bpf_map_type_list trie_type __read_mostly = {
+static struct bpf_map_type_list trie_type __ro_after_init = {
.ops = &trie_ops,
.type = BPF_MAP_TYPE_LPM_TRIE,
};