LXR linux/tools/testing/selftests/bpf/progs/test_static

   1// SPDX-License-Identifier: GPL-2.0
   2/* Copyright (c) 2021 Facebook */
   3
   4#include <linux/bpf.h>
   5#include <bpf/bpf_helpers.h>
   6
   7/* 8-byte aligned .data */
   8static volatile long static_var1 = 2;
   9static volatile int static_var2 = 3;
  10int var1 = -1;
  11/* 4-byte aligned .rodata */
  12const volatile int rovar1;
  13
  14/* same "subprog" name in both files */
  15static __noinline int subprog(int x)
  16{
  17        /* but different formula */
  18        return x * 2;
  19}
  20
  21SEC("raw_tp/sys_enter")
  22int handler1(const void *ctx)
  23{
  24        var1 = subprog(rovar1) + static_var1 + static_var2;
  25
  26        return 0;
  27}
  28
  29char LICENSE[] SEC("license") = "GPL";
  30int VERSION SEC("version") = 1;
  31