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 */ 8 static volatile long static_var1 = 2; 9 static volatile int static_var2 = 3; 10 int var1 = -1; 11 /* 4-byte aligned .rodata */ 12 const volatile int rovar1; 13 14 /* same "subprog" name in both files */ 15 static __noinline int subprog(int x) 16 { 17 /* but different formula */ 18 return x * 2; 19 } 20 21 SEC("raw_tp/sys_enter") 22 int handler1(const void *ctx) 23 { 24 var1 = subprog(rovar1) + static_var1 + static_var2; 25 26 return 0; 27 } 28 29 char LICENSE[] SEC("license") = "GPL"; 30 int VERSION SEC("version") = 1; 31