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| author | Yafang Shao <laoar.shao@gmail.com> | 2023-03-05 15:46:03 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2023-03-07 20:33:42 +0300 |
| commit | 2e89caf055a64cb531cbd8ab7a01c3e9b0b3133d (patch) | |
| tree | 45676b15505288c093f044becb5b318c7f857816 /kernel/bpf/reuseport_array.c | |
| parent | cbb9b6068c68332eefb0ef4c0ebf6f96c35d9bde (diff) | |
| download | linux-2e89caf055a64cb531cbd8ab7a01c3e9b0b3133d.tar.xz | |
bpf: reuseport_array memory usage
A new helper is introduced to calculate reuseport_array memory usage.
The result as follows,
- before
14: reuseport_sockarray name count_map flags 0x0
key 4B value 8B max_entries 65536 memlock 1048576B
- after
14: reuseport_sockarray name count_map flags 0x0
key 4B value 8B max_entries 65536 memlock 524544B
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Link: https://lore.kernel.org/r/20230305124615.12358-7-laoar.shao@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'kernel/bpf/reuseport_array.c')
| -rw-r--r-- | kernel/bpf/reuseport_array.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/kernel/bpf/reuseport_array.c b/kernel/bpf/reuseport_array.c index 82c61612f382..71cb72f5b733 100644 --- a/kernel/bpf/reuseport_array.c +++ b/kernel/bpf/reuseport_array.c @@ -335,6 +335,13 @@ static int reuseport_array_get_next_key(struct bpf_map *map, void *key, return 0; } +static u64 reuseport_array_mem_usage(const struct bpf_map *map) +{ + struct reuseport_array *array; + + return struct_size(array, ptrs, map->max_entries); +} + BTF_ID_LIST_SINGLE(reuseport_array_map_btf_ids, struct, reuseport_array) const struct bpf_map_ops reuseport_array_ops = { .map_meta_equal = bpf_map_meta_equal, @@ -344,5 +351,6 @@ const struct bpf_map_ops reuseport_array_ops = { .map_lookup_elem = reuseport_array_lookup_elem, .map_get_next_key = reuseport_array_get_next_key, .map_delete_elem = reuseport_array_delete_elem, + .map_mem_usage = reuseport_array_mem_usage, .map_btf_id = &reuseport_array_map_btf_ids[0], }; |