um: remove uml initcalls

__uml_initcall() is not used and .uml.initcall.init section is empty:

$ grep -r '__uml_initcall('
arch/um/include/shared/init.h:#define __uml_initcall(fn) \
$ readelf -s ../umobj/linux | grep __uml_initcall
23214: 00000000603b75d8 0 NOTYPE GLOBAL DEFAULT 32 __uml_initcall_start
25337: 00000000603b75d8 0 NOTYPE GLOBAL DEFAULT 32 __uml_initcall_end

So it is unnecessary.

Signed-off-by: Alexander Pateenok <[e-mail]>
Signed-off-by: Richard Weinberger <[e-mail]>

arch/um/include/asm/common.lds.S

···
 	CON_INITCALL
   }
 
-  .uml.initcall.init : {
-	__uml_initcall_start = .;
-	*(.uml.initcall.init)
-	__uml_initcall_end = .;
-  }
-
   SECURITY_INIT
 
   .exitcall : {

arch/um/include/shared/init.h

···
         int (*setup_func)(char *, int *);
 };
 
-extern initcall_t __uml_initcall_start, __uml_initcall_end;
 extern initcall_t __uml_postsetup_start, __uml_postsetup_end;
 extern const char *__uml_help_start, *__uml_help_end;
 #endif
-
-#define __uml_initcall(fn)					  	\
-	static initcall_t __uml_initcall_##fn __uml_init_call = fn
 
 #define __uml_exitcall(fn)						\
 	static exitcall_t __uml_exitcall_##fn __uml_exit_call = fn
···
  */
 #define __uml_init_setup	__used __section(.uml.setup.init)
 #define __uml_setup_help	__used __section(.uml.help.init)
-#define __uml_init_call		__used __section(.uml.initcall.init)
 #define __uml_postsetup_call	__used __section(.uml.postsetup.init)
 #define __uml_exit_call		__used __section(.uml.exitcall.exit)
 

arch/um/os-Linux/main.c

···
 	}
 }
 
-static __init void do_uml_initcalls(void)
-{
-	initcall_t *call;
-
-	call = &__uml_initcall_start;
-	while (call < &__uml_initcall_end) {
-		(*call)();
-		call++;
-	}
-}
-
 static void last_ditch_exit(int sig)
 {
 	uml_cleanup();
···
 	scan_elf_aux(envp);
 #endif
 
-	do_uml_initcalls();
 	change_sig(SIGPIPE, 0);
 	ret = linux_main(argc, argv);