1918 	struct bpf_prog_array *old_array;  in perf_event_attach_bpf_prog()  local
1936 	old_array = bpf_event_rcu_dereference(event->tp_event->prog_array);  in perf_event_attach_bpf_prog()
1937 	if (old_array &&  in perf_event_attach_bpf_prog()
1938 	    bpf_prog_array_length(old_array) >= BPF_TRACE_MAX_PROGS) {  in perf_event_attach_bpf_prog()
1943 	ret = bpf_prog_array_copy(old_array, NULL, prog, &new_array);  in perf_event_attach_bpf_prog()
1950 	bpf_prog_array_free(old_array);  in perf_event_attach_bpf_prog()
1959 	struct bpf_prog_array *old_array;  in perf_event_detach_bpf_prog()  local
1968 	old_array = bpf_event_rcu_dereference(event->tp_event->prog_array);  in perf_event_detach_bpf_prog()
1969 	ret = bpf_prog_array_copy(old_array, event->prog, NULL, &new_array);  in perf_event_detach_bpf_prog()
1973 		bpf_prog_array_delete_safe(old_array, event->prog);  in perf_event_detach_bpf_prog()
1976 		bpf_prog_array_free(old_array);  in perf_event_detach_bpf_prog()