Result from objdump of linux module which didn't use `module_init()/module_exit()`, and the one that use it.

gistfile1.txt

haxpor@haxpor-desktop:.../Projects/kern_st/hello-1$ objdump -Tt hello-1.ko

hello-1.ko:     file format elf64-x86-64

objdump: hello-1.ko: not a dynamic object
SYMBOL TABLE:
0000000000000000 l    d  .note.gnu.build-id     0000000000000000 .note.gnu.build-id
0000000000000000 l    d  .note.Linux    0000000000000000 .note.Linux
0000000000000000 l    d  .text  0000000000000000 .text
0000000000000000 l    d  .text.unlikely 0000000000000000 .text.unlikely
0000000000000000 l    d  .rodata.str1.1 0000000000000000 .rodata.str1.1
0000000000000000 l    d  __mcount_loc   0000000000000000 __mcount_loc
0000000000000000 l    d  .modinfo       0000000000000000 .modinfo
0000000000000000 l    d  .data  0000000000000000 .data
0000000000000000 l    d  .gnu.linkonce.this_module      0000000000000000 .gnu.linkonce.this_module
0000000000000000 l    d  .bss   0000000000000000 .bss
0000000000000000 l    d  .comment       0000000000000000 .comment
0000000000000000 l    d  .note.GNU-stack        0000000000000000 .note.GNU-stack
0000000000000000 l    df *ABS*  0000000000000000 hello-1.mod.c
000000000000000c l     O .modinfo       0000000000000023 __UNIQUE_ID_srcversion90
000000000000002f l     O .modinfo       0000000000000009 __UNIQUE_ID_depends89
0000000000000038 l     O .modinfo       000000000000000c __UNIQUE_ID_retpoline88
0000000000000044 l     O .modinfo       000000000000000d __UNIQUE_ID_name87
0000000000000051 l     O .modinfo       000000000000002f __UNIQUE_ID_vermagic86
0000000000000000 l     O .note.Linux    0000000000000018 _note_7
0000000000000000 l    df *ABS*  0000000000000000 hello-1.c
0000000000000000 l     O .modinfo       000000000000000c __UNIQUE_ID_license86
0000000000000000 g     O .gnu.linkonce.this_module      0000000000000380 __this_module
0000000000000019 g     F .text.unlikely 0000000000000017 cleanup_module
0000000000000000         *UND*  0000000000000000 __fentry__
0000000000000000 g     F .text.unlikely 0000000000000019 init_module
0000000000000000         *UND*  0000000000000000 printk


DYNAMIC SYMBOL TABLE:
no symbols


haxpor@haxpor-desktop:.../Projects/kern_st/hello-1$ objdump -Tt hello-2.ko

hello-2.ko:     file format elf64-x86-64

objdump: hello-2.ko: not a dynamic object
SYMBOL TABLE:
0000000000000000 l    d  .note.gnu.build-id     0000000000000000 .note.gnu.build-id
0000000000000000 l    d  .note.Linux    0000000000000000 .note.Linux
0000000000000000 l    d  .text  0000000000000000 .text
0000000000000000 l    d  .init.text     0000000000000000 .init.text
0000000000000000 l    d  .exit.text     0000000000000000 .exit.text
0000000000000000 l    d  .rodata.str1.1 0000000000000000 .rodata.str1.1
0000000000000000 l    d  __mcount_loc   0000000000000000 __mcount_loc
0000000000000000 l    d  .modinfo       0000000000000000 .modinfo
0000000000000000 l    d  .data  0000000000000000 .data
0000000000000000 l    d  .gnu.linkonce.this_module      0000000000000000 .gnu.linkonce.this_module
0000000000000000 l    d  .bss   0000000000000000 .bss
0000000000000000 l    d  .comment       0000000000000000 .comment
0000000000000000 l    d  .note.GNU-stack        0000000000000000 .note.GNU-stack
0000000000000000 l    df *ABS*  0000000000000000 hello-2.mod.c
000000000000000c l     O .modinfo       0000000000000023 __UNIQUE_ID_srcversion90
000000000000002f l     O .modinfo       0000000000000009 __UNIQUE_ID_depends89
0000000000000038 l     O .modinfo       000000000000000c __UNIQUE_ID_retpoline88
0000000000000044 l     O .modinfo       000000000000000d __UNIQUE_ID_name87
0000000000000051 l     O .modinfo       000000000000002f __UNIQUE_ID_vermagic86
0000000000000000 l     O .note.Linux    0000000000000018 _note_7
0000000000000000 l    df *ABS*  0000000000000000 hello-2.c
0000000000000000 l     F .init.text     0000000000000019 hello_2_init
0000000000000000 l     F .exit.text     0000000000000012 hello_2_exit
0000000000000000 l     O .modinfo       000000000000000c __UNIQUE_ID_license86
0000000000000000 g     O .gnu.linkonce.this_module      0000000000000380 __this_module
0000000000000000 g     F .exit.text     0000000000000012 cleanup_module
0000000000000000         *UND*  0000000000000000 __fentry__
0000000000000000 g     F .init.text     0000000000000019 init_module
0000000000000000         *UND*  0000000000000000 printk


DYNAMIC SYMBOL TABLE:
no symbols