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bpf: remove struct bpf_map_type_list

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There's no need to have struct bpf_map_type_list since
it just contains a list_head, the type, and the ops
pointer. Since the types are densely packed and not
actually dynamically registered, it's much easier and
smaller to have an array of type->ops pointer. Also
initialize this array statically to remove code needed
to initialize it.

In order to save duplicating the list, move it to the
types header file added by the previous patch and
include it in the same fashion.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Johannes Berg
2017-04-11 15:34:58 +02:00
committed by David S. Miller
parent be9370a7d8
commit 40077e0cf6
7 changed files with 53 additions and 165 deletions
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14
kernel/bpf/stackmap.c
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@@ -264,7 +264,7 @@ static void stack_map_free(struct bpf_map *map)
put_callchain_buffers();
}
static const struct bpf_map_ops stack_map_ops = {
const struct bpf_map_ops stack_map_ops = {
.map_alloc = stack_map_alloc,
.map_free = stack_map_free,
.map_get_next_key = stack_map_get_next_key,
@@ -272,15 +272,3 @@ static const struct bpf_map_ops stack_map_ops = {
.map_update_elem = stack_map_update_elem,
.map_delete_elem = stack_map_delete_elem,
};
static struct bpf_map_type_list stack_map_type __ro_after_init = {
.ops = &stack_map_ops,
.type = BPF_MAP_TYPE_STACK_TRACE,
};
static int __init register_stack_map(void)
{
bpf_register_map_type(&stack_map_type);
return 0;
}
late_initcall(register_stack_map);