964 	struct bpf_prog_array __rcu *old_array;  in perf_event_attach_bpf_prog()  local
982 	old_array = event->tp_event->prog_array;  in perf_event_attach_bpf_prog()
983 	if (old_array &&  in perf_event_attach_bpf_prog()
984 	    bpf_prog_array_length(old_array) >= BPF_TRACE_MAX_PROGS) {  in perf_event_attach_bpf_prog()
989 	ret = bpf_prog_array_copy(old_array, NULL, prog, &new_array);  in perf_event_attach_bpf_prog()
996 	bpf_prog_array_free(old_array);  in perf_event_attach_bpf_prog()
1005 	struct bpf_prog_array __rcu *old_array;  in perf_event_detach_bpf_prog()  local
1014 	old_array = event->tp_event->prog_array;  in perf_event_detach_bpf_prog()
1015 	ret = bpf_prog_array_copy(old_array, event->prog, NULL, &new_array);  in perf_event_detach_bpf_prog()
1019 		bpf_prog_array_delete_safe(old_array, event->prog);  in perf_event_detach_bpf_prog()
1022 		bpf_prog_array_free(old_array);  in perf_event_detach_bpf_prog()