tools/perf/tests/bpf-script-test-kbuild.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * bpf-script-test-kbuild.c
   4  * Test include from kernel header
   5  */
   6 #ifndef LINUX_VERSION_CODE
   7 # error Need LINUX_VERSION_CODE
   8 # error Example: for 4.2 kernel, put 'clang-opt="-DLINUX_VERSION_CODE=0x40200" into llvm section of ~/.perfconfig'
   9 #endif
  10 #define SEC(NAME) __attribute__((section(NAME), used))
  11
  12 #include <uapi/linux/fs.h>
  13
  14 SEC("func=vfs_llseek")
  15 int bpf_func__vfs_llseek(void *ctx)
  16 {
  17         return 0;
  18 }
  19
  20 char _license[] SEC("license") = "GPL";
  21 int _version SEC("version") = LINUX_VERSION_CODE;