cgroup_lsm_atype
static struct cgroup_lsm_atype cgroup_lsm_atype[CGROUP_LSM_NUM];
for (i = 0; i < ARRAY_SIZE(cgroup_lsm_atype); i++)
if (cgroup_lsm_atype[i].attach_btf_id == attach_btf_id)
for (i = 0; i < ARRAY_SIZE(cgroup_lsm_atype); i++)
if (cgroup_lsm_atype[i].attach_btf_id == 0)
WARN_ON_ONCE(cgroup_lsm_atype[i].attach_btf_id &&
cgroup_lsm_atype[i].attach_btf_id != attach_btf_id);
cgroup_lsm_atype[i].attach_btf_id = attach_btf_id;
cgroup_lsm_atype[i].refcnt++;
if (--cgroup_lsm_atype[i].refcnt <= 0)
cgroup_lsm_atype[i].attach_btf_id = 0;
WARN_ON_ONCE(cgroup_lsm_atype[i].refcnt < 0);