// SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2022 Meta Platforms, Inc. and affiliates. */ #include "vmlinux.h" #include <bpf/bpf_helpers.h> #include <bpf/usdt.bpf.h> /* this file is linked together with test_usdt.c to validate that usdt.bpf.h * can be included in multiple .bpf.c files forming single final BPF object * file */ extern int my_pid; int usdt_100_called; int usdt_100_sum; SEC("usdt//proc/self/exe:test:usdt_100") int BPF_USDT(usdt_100, int x) { if (my_pid != (bpf_get_current_pid_tgid() >> 32)) return 0; __sync_fetch_and_add(&usdt_100_called, 1); __sync_fetch_and_add(&usdt_100_sum, x); return 0; } char _license[] SEC("license") = "GPL";