// SPDX-License-Identifier: GPL-2.0 #include <bpf.h> struct bpf_map SEC("maps") __bpf_stdout__ = {       .type = BPF_MAP_TYPE_PERF_EVENT_ARRAY,       .key_size = sizeof(int),       .value_size = sizeof(u32),       .max_entries = __NR_CPUS__,}; #define puts(from) \	({ const int __len = sizeof(from); \	   char __from[__len] = from; \	   perf_event_output(args, &__bpf_stdout__, BPF_F_CURRENT_CPU, \			  &__from, __len & (sizeof(from) - 1)); })