root/tools/perf/include/bpf/stdio.h

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INCLUDED FROM

   1 // SPDX-License-Identifier: GPL-2.0
   2 
   3 #include <bpf.h>
   4 
   5 struct bpf_map SEC("maps") __bpf_stdout__ = {
   6        .type = BPF_MAP_TYPE_PERF_EVENT_ARRAY,
   7        .key_size = sizeof(int),
   8        .value_size = sizeof(u32),
   9        .max_entries = __NR_CPUS__,
  10 };
  11 
  12 #define puts(from) \
  13         ({ const int __len = sizeof(from); \
  14            char __from[__len] = from; \
  15            perf_event_output(args, &__bpf_stdout__, BPF_F_CURRENT_CPU, \
  16                           &__from, __len & (sizeof(from) - 1)); })
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