bpf_selem_alloc
bpf_selem_alloc(struct bpf_local_storage_map *smap, void *owner, void *value,
selem = bpf_selem_alloc(smap, owner, value, swap_uptrs);
alloc_selem = selem = bpf_selem_alloc(smap, owner, value, swap_uptrs);
copy_selem = bpf_selem_alloc(smap, newsk, NULL, false);