32 lines
685 B
C
32 lines
685 B
C
|
// SPDX-License-Identifier: GPL-2.0
|
||
|
|
/* Copyright (c) 2021 Facebook */
|
||
|
|
|
||
|
|
#include <linux/bpf.h>
|
||
|
|
#include <bpf/bpf_helpers.h>
|
||
|
|
|
||
|
|
/* 4-byte aligned .data */
|
||
|
|
static volatile int static_var1 = 5;
|
||
|
|
static volatile int static_var2 = 6;
|
||
|
|
int var2 = -1;
|
||
|
|
/* 8-byte aligned .rodata */
|
||
|
|
const volatile long rovar2;
|
||
|
|
|
||
|
|
/* same "subprog" name in both files */
|
||
|
|
static __noinline int subprog(int x)
|
||
|
|
{
|
||
|
|
/* but different formula */
|
||
|
|
return x * 3;
|
||
|
|
}
|
||
|
|
|
||
|
|
SEC("raw_tp/sys_enter")
|
||
|
|
int handler2(const void *ctx)
|
||
|
|
{
|
||
|
|
var2 = subprog(rovar2) + static_var1 + static_var2;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* different name and/or type of the variable doesn't matter */
|
||
|
|
char _license[] SEC("license") = "GPL";
|
||
|
|
int _version SEC("version") = 1;
|