| 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" ) |
|---|
| 19 | int 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 | |
|---|
