pfm_null_uuid 517 arch/ia64/kernel/perfmon.c static pfm_uuid_t pfm_null_uuid = {0,}; pfm_null_uuid 2486 arch/ia64/kernel/perfmon.c if (!pfm_uuid_cmp(req->ctx_smpl_buf_id, pfm_null_uuid)) return 0; pfm_null_uuid 2619 arch/ia64/kernel/perfmon.c if (pfm_uuid_cmp(req->ctx_smpl_buf_id, pfm_null_uuid)) {