1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright (c) 2022 Meta Platforms, Inc. and affiliates. */ 3 4 #include "vmlinux.h" 5 #include <bpf/bpf_helpers.h> 6 #include <bpf/usdt.bpf.h> 7 8 /* this file is linked together with test_usdt.c to validate that usdt.bpf.h 9 * can be included in multiple .bpf.c files forming single final BPF object 10 * file 11 */ 12 13 extern int my_pid; 14 15 int usdt_100_called; 16 int usdt_100_sum; 17 18 SEC("usdt//proc/self/exe:test:usdt_100") BPF_USDT(usdt_100,int x)19int BPF_USDT(usdt_100, int x) 20 { 21 if (my_pid != (bpf_get_current_pid_tgid() >> 32)) 22 return 0; 23 24 __sync_fetch_and_add(&usdt_100_called, 1); 25 __sync_fetch_and_add(&usdt_100_sum, x); 26 27 return 0; 28 } 29 30 char _license[] SEC("license") = "GPL"; 31