2166 	struct bpf_prog_array *old_array;  in perf_event_attach_bpf_prog()  local
2184 	old_array = bpf_event_rcu_dereference(event->tp_event->prog_array);  in perf_event_attach_bpf_prog()
2185 	if (old_array &&  in perf_event_attach_bpf_prog()
2186 	    bpf_prog_array_length(old_array) >= BPF_TRACE_MAX_PROGS) {  in perf_event_attach_bpf_prog()
2191 	ret = bpf_prog_array_copy(old_array, NULL, prog, bpf_cookie, &new_array);  in perf_event_attach_bpf_prog()
2199 	bpf_prog_array_free_sleepable(old_array);  in perf_event_attach_bpf_prog()
2208 	struct bpf_prog_array *old_array;  in perf_event_detach_bpf_prog()  local
2217 	old_array = bpf_event_rcu_dereference(event->tp_event->prog_array);  in perf_event_detach_bpf_prog()
2218 	ret = bpf_prog_array_copy(old_array, event->prog, NULL, 0, &new_array);  in perf_event_detach_bpf_prog()
2222 		bpf_prog_array_delete_safe(old_array, event->prog);  in perf_event_detach_bpf_prog()
2225 		bpf_prog_array_free_sleepable(old_array);  in perf_event_detach_bpf_prog()