s390/compat: remove compat exec domain

The whole compat exec domain code doesn't make any difference.

From the registered s390_exec_domain:

- exec domain name is only displayed in /proc/execdomains
- handler is unused
- pers_low and pers_high are only used internally to find this specific
  exec domain otherwise the default exec domain will be used
- all other fields match the default exec domain

So let's get rid of this.

Reported-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile
index 1b3ac09c11b6df2981ca3dbde3cc6df3fba5d2e9..a95c4ca99617e43360fb3b867ac3aefb92b374d6 100644 (file)
--- a/arch/s390/kernel/Makefile
+++ b/arch/s390/kernel/Makefile
@@ -47,9 +47,8 @@ obj-$(CONFIG_SCHED_BOOK)      += topology.o
 obj-$(CONFIG_HIBERNATION)      += suspend.o swsusp_asm64.o
 obj-$(CONFIG_AUDIT)            += audit.o
 compat-obj-$(CONFIG_AUDIT)     += compat_audit.o
-obj-$(CONFIG_COMPAT)           += compat_linux.o compat_signal.o \
-                                       compat_wrapper.o compat_exec_domain.o \
-                                       $(compat-obj-y)
+obj-$(CONFIG_COMPAT)           += compat_linux.o compat_signal.o
+obj-$(CONFIG_COMPAT)           += compat_wrapper.o $(compat-obj-y)
 
 obj-$(CONFIG_STACKTRACE)       += stacktrace.o
 obj-$(CONFIG_KPROBES)          += kprobes.o

diff --git a/arch/s390/kernel/compat_exec_domain.c b/arch/s390/kernel/compat_exec_domain.c
deleted file mode 100644 (file)
index 765fabd..0000000
--- a/arch/s390/kernel/compat_exec_domain.c
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
- * Support for 32-bit Linux for S390 personality.
- *
- * Copyright IBM Corp. 2000
- * Author(s): Gerhard Tonn (ton@de.ibm.com)
- *
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/personality.h>
-#include <linux/sched.h>
-
-static struct exec_domain s390_exec_domain;
-
-static int __init s390_init (void)
-{
-       s390_exec_domain.name = "Linux/s390";
-       s390_exec_domain.handler = NULL;
-       s390_exec_domain.pers_low = PER_LINUX32;
-       s390_exec_domain.pers_high = PER_LINUX32;
-       s390_exec_domain.signal_map = default_exec_domain.signal_map;
-       s390_exec_domain.signal_invmap = default_exec_domain.signal_invmap;
-       register_exec_domain(&s390_exec_domain);
-       return 0;
-}
-
-__initcall(s390_init);