change c-file test structure

tests/passing_tests/vmlinux/requests2.py

@@ -0,0 +1,21 @@
+from vmlinux import struct_pt_regs
+from pythonbpf import bpf, section, bpfglobal, compile_to_ir
+import logging
+from ctypes import c_int64
+
+
+@bpf
+@section("kprobe/blk_mq_start_request")
+def example(ctx: struct_pt_regs) -> c_int64:
+    req = ctx.di
+    print(f"data length {req}")
+    return c_int64(0)
+
+
+@bpf
+@bpfglobal
+def LICENSE() -> str:
+    return "GPL"
+
+
+compile_to_ir("requests2.py", "requests2.ll", loglevel=logging.INFO)