uml: create as-layout.h

This patch moves all the the symbols defined in um_arch.c, which are mostly
boundaries between different parts of the UML kernel address space, to a new
header, as-layout.h.  There are also a few things here which aren't really
related to address space layout, but which don't really have a better place to
go.
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/um/include/as-layout.h

+/*
+ * Copyright (C) 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
+ * Licensed under the GPL
+ */
+
+#ifndef __START_H__
+#define __START_H__
+
+#include "sysdep/ptrace.h"
+
+struct cpu_task {
+	int pid;
+	void *task;
+};
+
+extern struct cpu_task cpu_tasks[];
+
+extern unsigned long low_physmem;
+extern unsigned long high_physmem;
+extern unsigned long uml_physmem;
+extern unsigned long uml_reserved;
+extern unsigned long end_vm;
+extern unsigned long start_vm;
+extern unsigned long long highmem;
+
+extern unsigned long _stext, _etext, _sdata, _edata, __bss_start, _end;
+extern unsigned long _unprotected_end;
+extern unsigned long brk_start;
+
+extern int linux_main(int argc, char **argv);
+extern void set_cmdline(char *cmd);
+
+extern void (*sig_info[])(int, union uml_pt_regs *);
+
+#endif

arch/um/include/user_util.h

@@ -30,30 +30,7 @@ extern int grantpt(int __fd);
 extern int unlockpt(int __fd);
 extern char *ptsname(int __fd);
 
-struct cpu_task {
-	int pid;
-	void *task;
-};
-
-extern struct cpu_task cpu_tasks[];
-
-extern void (*sig_info[])(int, union uml_pt_regs *);
-
-extern unsigned long low_physmem;
-extern unsigned long high_physmem;
-extern unsigned long uml_physmem;
-extern unsigned long uml_reserved;
-extern unsigned long end_vm;
-extern unsigned long start_vm;
-extern unsigned long long highmem;
-
-extern unsigned long _stext, _etext, _sdata, _edata, __bss_start, _end;
-extern unsigned long _unprotected_end;
-extern unsigned long brk_start;
-
 extern void *add_signal_handler(int sig, void (*handler)(int));
-extern int linux_main(int argc, char **argv);
-extern void set_cmdline(char *cmd);
 extern void input_cb(void (*proc)(void *), void *arg, int arg_len);
 extern int get_pty(void);
 extern int switcheroo(int fd, int prot, void *from, void *to, int size);

arch/um/kernel/exec.c

@@ -12,6 +12,7 @@
 #include "asm/uaccess.h"
 #include "user_util.h"
 #include "kern_util.h"
+#include "as-layout.h"
 #include "mem_user.h"
 #include "kern.h"
 #include "irq_user.h"

arch/um/kernel/ksyms.c

@@ -16,6 +16,7 @@
 #include "asm/page.h"
 #include "asm/tlbflush.h"
 #include "kern_util.h"
+#include "as-layout.h"
 #include "user_util.h"
 #include "mem_user.h"
 #include "os.h"

arch/um/kernel/mem.c

@@ -15,6 +15,7 @@
 #include "asm/pgalloc.h"
 #include "user_util.h"
 #include "kern_util.h"
+#include "as-layout.h"
 #include "kern.h"
 #include "mem_user.h"
 #include "uml_uaccess.h"

arch/um/kernel/physmem.c

@@ -13,6 +13,7 @@
 #include "asm/types.h"
 #include "asm/pgtable.h"
 #include "kern_util.h"
+#include "as-layout.h"
 #include "user_util.h"
 #include "mode_kern.h"
 #include "mem.h"

arch/um/kernel/process.c

@@ -34,6 +34,7 @@
 #include "asm/user.h"
 #include "user_util.h"
 #include "kern_util.h"
+#include "as-layout.h"
 #include "kern.h"
 #include "signal_kern.h"
 #include "init.h"

arch/um/kernel/skas/process.c

@@ -13,6 +13,7 @@
 #include "asm/uaccess.h"
 #include "asm/atomic.h"
 #include "kern_util.h"
+#include "as-layout.h"
 #include "skas.h"
 #include "os.h"
 #include "user_util.h"

arch/um/kernel/tlb.c

@@ -9,6 +9,7 @@
 #include "asm/tlbflush.h"
 #include "choose-mode.h"
 #include "mode_kern.h"
+#include "as-layout.h"
 #include "user_util.h"
 #include "tlb.h"
 #include "mem.h"

arch/um/kernel/trap.c

@@ -20,6 +20,7 @@
 #include "sysdep/sigcontext.h"
 #include "user_util.h"
 #include "kern_util.h"
+#include "as-layout.h"
 #include "arch.h"
 #include "kern.h"
 #include "chan_kern.h"

arch/um/kernel/um_arch.c

@@ -28,6 +28,7 @@
 #include "asm/current.h"
 #include "user_util.h"
 #include "kern_util.h"
+#include "as-layout.h"
 #include "arch.h"
 #include "kern.h"
 #include "mem_user.h"

arch/um/os-Linux/main.c

@@ -15,6 +15,7 @@
 #include <asm/page.h>
 #include "user_util.h"
 #include "kern_util.h"
+#include "as-layout.h"
 #include "mem_user.h"
 #include "irq_user.h"
 #include "user.h"

arch/um/os-Linux/skas/trap.c

@@ -7,6 +7,7 @@
 #include <errno.h>
 #include "user_util.h"
 #include "kern_util.h"
+#include "as-layout.h"
 #include "task.h"
 #include "sigcontext.h"
 #include "skas.h"