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

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