s390/thread_info: get rid of THREAD_ORDER define

We have the s390 specific THREAD_ORDER define and the THREAD_SIZE_ORDER
define which is also used in common code. Both have exactly the same
semantics. Therefore get rid of THREAD_ORDER and always use
THREAD_SIZE_ORDER instead.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

arch/s390/boot/compressed/head.S

@@ -46,7 +46,7 @@ mover_end:
 
 	.align	8
 .Lstack:
-	.quad	0x8000 + (1<<(PAGE_SHIFT+THREAD_ORDER))
+	.quad	0x8000 + (1<<(PAGE_SHIFT+THREAD_SIZE_ORDER))
 .Loffset:
 	.quad	0x11000
 .Lmvsize:

arch/s390/include/asm/thread_info.h

@@ -12,10 +12,10 @@
 /*
  * Size of kernel stack for each process
  */
-#define THREAD_ORDER 2
+#define THREAD_SIZE_ORDER 2
 #define ASYNC_ORDER  2
 
-#define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER)
+#define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER)
 #define ASYNC_SIZE  (PAGE_SIZE << ASYNC_ORDER)
 
 #ifndef __ASSEMBLY__
@@ -46,8 +46,6 @@ struct thread_info {
 void arch_release_task_struct(struct task_struct *tsk);
 int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src);
 
-#define THREAD_SIZE_ORDER THREAD_ORDER
-
 #endif
 
 /*

arch/s390/kernel/entry.S

@@ -42,7 +42,7 @@ __PT_R13     =	__PT_GPRS + 104
 __PT_R14     =	__PT_GPRS + 112
 __PT_R15     =	__PT_GPRS + 120
 
-STACK_SHIFT = PAGE_SHIFT + THREAD_ORDER
+STACK_SHIFT = PAGE_SHIFT + THREAD_SIZE_ORDER
 STACK_SIZE  = 1 << STACK_SHIFT
 STACK_INIT = STACK_SIZE - STACK_FRAME_OVERHEAD - __PT_SIZE
 

arch/s390/kernel/head.S

@@ -315,7 +315,7 @@ ENTRY(startup_kdump)
 	jg	startup_continue
 
 .Lstack:
-	.long	0x8000 + (1<<(PAGE_SHIFT+THREAD_ORDER))
+	.long	0x8000 + (1<<(PAGE_SHIFT+THREAD_SIZE_ORDER))
 	.align	8
 6:	.long	0x7fffffff,0xffffffff
 

arch/s390/kernel/head64.S

@@ -35,7 +35,7 @@ ENTRY(startup_continue)
 	larl	%r14,init_task
 	stg	%r14,__LC_CURRENT
 	larl	%r15,init_thread_union
-	aghi	%r15,1<<(PAGE_SHIFT+THREAD_ORDER) # init_task_union + THREAD_SIZE
+	aghi	%r15,1<<(PAGE_SHIFT+THREAD_SIZE_ORDER) # init_task_union + THREAD_SIZE
 	stg	%r15,__LC_KERNEL_STACK	# set end of kernel stack
 	aghi	%r15,-160
 #

arch/s390/kernel/irq.c

@@ -168,7 +168,7 @@ void do_softirq_own_stack(void)
 	old = current_stack_pointer();
 	/* Check against async. stack address range. */
 	new = S390_lowcore.async_stack;
-	if (((new - old) >> (PAGE_SHIFT + THREAD_ORDER)) != 0) {
+	if (((new - old) >> (PAGE_SHIFT + THREAD_SIZE_ORDER)) != 0) {
 		/* Need to switch to the async. stack. */
 		new -= STACK_FRAME_OVERHEAD;
 		((struct stack_frame *) new)->back_chain = old;

arch/s390/kernel/swsusp.S

@@ -194,7 +194,7 @@ pgm_check_entry:
 
 	/* Suspend CPU not available -> panic */
 	larl	%r15,init_thread_union
-	ahi	%r15,1<<(PAGE_SHIFT+THREAD_ORDER)
+	ahi	%r15,1<<(PAGE_SHIFT+THREAD_SIZE_ORDER)
 	larl	%r2,.Lpanic_string
 	larl	%r3,_sclp_print_early
 	lghi	%r1,0