1*630301b0SAndrii Nakryiko // SPDX-License-Identifier: GPL-2.0 2*630301b0SAndrii Nakryiko /* Copyright (c) 2022 Meta Platforms, Inc. and affiliates. */ 3*630301b0SAndrii Nakryiko 4*630301b0SAndrii Nakryiko #include "vmlinux.h" 5*630301b0SAndrii Nakryiko #include <bpf/bpf_helpers.h> 6*630301b0SAndrii Nakryiko #include <bpf/usdt.bpf.h> 7*630301b0SAndrii Nakryiko 8*630301b0SAndrii Nakryiko /* this file is linked together with test_usdt.c to validate that usdt.bpf.h 9*630301b0SAndrii Nakryiko * can be included in multiple .bpf.c files forming single final BPF object 10*630301b0SAndrii Nakryiko * file 11*630301b0SAndrii Nakryiko */ 12*630301b0SAndrii Nakryiko 13*630301b0SAndrii Nakryiko extern int my_pid; 14*630301b0SAndrii Nakryiko 15*630301b0SAndrii Nakryiko int usdt_100_called; 16*630301b0SAndrii Nakryiko int usdt_100_sum; 17*630301b0SAndrii Nakryiko 18*630301b0SAndrii Nakryiko SEC("usdt//proc/self/exe:test:usdt_100") BPF_USDT(usdt_100,int x)19*630301b0SAndrii Nakryikoint BPF_USDT(usdt_100, int x) 20*630301b0SAndrii Nakryiko { 21*630301b0SAndrii Nakryiko if (my_pid != (bpf_get_current_pid_tgid() >> 32)) 22*630301b0SAndrii Nakryiko return 0; 23*630301b0SAndrii Nakryiko 24*630301b0SAndrii Nakryiko __sync_fetch_and_add(&usdt_100_called, 1); 25*630301b0SAndrii Nakryiko __sync_fetch_and_add(&usdt_100_sum, x); 26*630301b0SAndrii Nakryiko 27*630301b0SAndrii Nakryiko return 0; 28*630301b0SAndrii Nakryiko } 29*630301b0SAndrii Nakryiko 30*630301b0SAndrii Nakryiko char _license[] SEC("license") = "GPL"; 31