Disintegrate asm/system.h for MIPS

Disintegrate asm/system.h for MIPS.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
cc: linux-mips@linux-mips.org

90 files changed, 262 insertions, 309 deletions

diff --git a/arch/mips/cavium-octeon/setup.c b/arch/mips/cavium-octeon/setup.c
index 260b2736734..d3a9f012aa0 100644
--- a/arch/mips/cavium-octeon/setup.c
+++ b/arch/mips/cavium-octeon/setup.c
@@ -24,7 +24,6 @@
 #include <asm/processor.h>
 #include <asm/reboot.h>
 #include <asm/smp-ops.h>
-#include <asm/system.h>
 #include <asm/irq_cpu.h>
 #include <asm/mipsregs.h>
 #include <asm/bootinfo.h>
diff --git a/arch/mips/cavium-octeon/smp.c b/arch/mips/cavium-octeon/smp.c
index b1535fe409d..c3e2b85c3b0 100644
--- a/arch/mips/cavium-octeon/smp.c
+++ b/arch/mips/cavium-octeon/smp.c
@@ -15,8 +15,8 @@
 #include <linux/module.h>
 
 #include <asm/mmu_context.h>
-#include <asm/system.h>
 #include <asm/time.h>
+#include <asm/setup.h>
 
 #include <asm/octeon/octeon.h>
 
diff --git a/arch/mips/dec/ecc-berr.c b/arch/mips/dec/ecc-berr.c
index 7abce661b90..5abf4e89421 100644
--- a/arch/mips/dec/ecc-berr.c
+++ b/arch/mips/dec/ecc-berr.c
@@ -24,7 +24,6 @@
 #include <asm/irq_regs.h>
 #include <asm/processor.h>
 #include <asm/ptrace.h>
-#include <asm/system.h>
 #include <asm/traps.h>
 
 #include <asm/dec/ecc.h>
diff --git a/arch/mips/dec/kn01-berr.c b/arch/mips/dec/kn01-berr.c
index 94d23b4a7dc..44d8a87a8a6 100644
--- a/arch/mips/dec/kn01-berr.c
+++ b/arch/mips/dec/kn01-berr.c
@@ -22,7 +22,6 @@
 #include <asm/mipsregs.h>
 #include <asm/page.h>
 #include <asm/ptrace.h>
-#include <asm/system.h>
 #include <asm/traps.h>
 #include <asm/uaccess.h>
 
diff --git a/arch/mips/dec/kn02xa-berr.c b/arch/mips/dec/kn02xa-berr.c
index 07ca5405d48..ebb73c51d82 100644
--- a/arch/mips/dec/kn02xa-berr.c
+++ b/arch/mips/dec/kn02xa-berr.c
@@ -21,7 +21,6 @@
 #include <asm/addrspace.h>
 #include <asm/irq_regs.h>
 #include <asm/ptrace.h>
-#include <asm/system.h>
 #include <asm/traps.h>
 
 #include <asm/dec/kn02ca.h>
diff --git a/arch/mips/dec/wbflush.c b/arch/mips/dec/wbflush.c
index 925c0525344..43feddd5e19 100644
--- a/arch/mips/dec/wbflush.c
+++ b/arch/mips/dec/wbflush.c
@@ -17,8 +17,8 @@
 #include <linux/init.h>
 
 #include <asm/bootinfo.h>
-#include <asm/system.h>
 #include <asm/wbflush.h>
+#include <asm/barrier.h>
 
 static void wbflush_kn01(void);
 static void wbflush_kn210(void);
diff --git a/arch/mips/emma/markeins/irq.c b/arch/mips/emma/markeins/irq.c
index 7798887a128..b5f08255d9c 100644
--- a/arch/mips/emma/markeins/irq.c
+++ b/arch/mips/emma/markeins/irq.c
@@ -27,7 +27,6 @@
 #include <linux/delay.h>
 
 #include <asm/irq_cpu.h>
-#include <asm/system.h>
 #include <asm/mipsregs.h>
 #include <asm/addrspace.h>
 #include <asm/bootinfo.h>
diff --git a/arch/mips/fw/arc/misc.c b/arch/mips/fw/arc/misc.c
index 29627fbae7a..7cf80ca2c1d 100644
--- a/arch/mips/fw/arc/misc.c
+++ b/arch/mips/fw/arc/misc.c
@@ -17,7 +17,6 @@
 #include <asm/fw/arc/types.h>
 #include <asm/sgialib.h>
 #include <asm/bootinfo.h>
-#include <asm/system.h>
 
 VOID
 ArcHalt(VOID)
diff --git a/arch/mips/include/asm/atomic.h b/arch/mips/include/asm/atomic.h
index 1d93f81d57e..3f4c5cb6433 100644
--- a/arch/mips/include/asm/atomic.h
+++ b/arch/mips/include/asm/atomic.h
@@ -18,8 +18,8 @@
 #include <linux/types.h>
 #include <asm/barrier.h>
 #include <asm/cpu-features.h>
+#include <asm/cmpxchg.h>
 #include <asm/war.h>
-#include <asm/system.h>
 
 #define ATOMIC_INIT(i)    { (i) }
 
diff --git a/arch/mips/include/asm/barrier.h b/arch/mips/include/asm/barrier.h
index c0884f02d3a..f7fdc24e972 100644
--- a/arch/mips/include/asm/barrier.h
+++ b/arch/mips/include/asm/barrier.h
@@ -8,6 +8,8 @@
 #ifndef __ASM_BARRIER_H
 #define __ASM_BARRIER_H
 
+#include <asm/addrspace.h>
+
 /*
  * read_barrier_depends - Flush all pending reads that subsequents reads
  * depend on.
diff --git a/arch/mips/include/asm/cmpxchg.h b/arch/mips/include/asm/cmpxchg.h
index d8d1c2805ac..285a41fa0b1 100644
--- a/arch/mips/include/asm/cmpxchg.h
+++ b/arch/mips/include/asm/cmpxchg.h
@@ -9,6 +9,130 @@
 #define __ASM_CMPXCHG_H
 
 #include <linux/irqflags.h>
+#include <asm/war.h>
+
+static inline unsigned long __xchg_u32(volatile int * m, unsigned int val)
+{
+	__u32 retval;
+
+	smp_mb__before_llsc();
+
+	if (kernel_uses_llsc && R10000_LLSC_WAR) {
+		unsigned long dummy;
+
+		__asm__ __volatile__(
+		"	.set	mips3					\n"
+		"1:	ll	%0, %3			# xchg_u32	\n"
+		"	.set	mips0					\n"
+		"	move	%2, %z4					\n"
+		"	.set	mips3					\n"
+		"	sc	%2, %1					\n"
+		"	beqzl	%2, 1b					\n"
+		"	.set	mips0					\n"
+		: "=&r" (retval), "=m" (*m), "=&r" (dummy)
+		: "R" (*m), "Jr" (val)
+		: "memory");
+	} else if (kernel_uses_llsc) {
+		unsigned long dummy;
+
+		do {
+			__asm__ __volatile__(
+			"	.set	mips3				\n"
+			"	ll	%0, %3		# xchg_u32	\n"
+			"	.set	mips0				\n"
+			"	move	%2, %z4				\n"
+			"	.set	mips3				\n"
+			"	sc	%2, %1				\n"
+			"	.set	mips0				\n"
+			: "=&r" (retval), "=m" (*m), "=&r" (dummy)
+			: "R" (*m), "Jr" (val)
+			: "memory");
+		} while (unlikely(!dummy));
+	} else {
+		unsigned long flags;
+
+		raw_local_irq_save(flags);
+		retval = *m;
+		*m = val;
+		raw_local_irq_restore(flags);	/* implies memory barrier  */
+	}
+
+	smp_llsc_mb();
+
+	return retval;
+}
+
+#ifdef CONFIG_64BIT
+static inline __u64 __xchg_u64(volatile __u64 * m, __u64 val)
+{
+	__u64 retval;
+
+	smp_mb__before_llsc();
+
+	if (kernel_uses_llsc && R10000_LLSC_WAR) {
+		unsigned long dummy;
+
+		__asm__ __volatile__(
+		"	.set	mips3					\n"
+		"1:	lld	%0, %3			# xchg_u64	\n"
+		"	move	%2, %z4					\n"
+		"	scd	%2, %1					\n"
+		"	beqzl	%2, 1b					\n"
+		"	.set	mips0					\n"
+		: "=&r" (retval), "=m" (*m), "=&r" (dummy)
+		: "R" (*m), "Jr" (val)
+		: "memory");
+	} else if (kernel_uses_llsc) {
+		unsigned long dummy;
+
+		do {
+			__asm__ __volatile__(
+			"	.set	mips3				\n"
+			"	lld	%0, %3		# xchg_u64	\n"
+			"	move	%2, %z4				\n"
+			"	scd	%2, %1				\n"
+			"	.set	mips0				\n"
+			: "=&r" (retval), "=m" (*m), "=&r" (dummy)
+			: "R" (*m), "Jr" (val)
+			: "memory");
+		} while (unlikely(!dummy));
+	} else {
+		unsigned long flags;
+
+		raw_local_irq_save(flags);
+		retval = *m;
+		*m = val;
+		raw_local_irq_restore(flags);	/* implies memory barrier  */
+	}
+
+	smp_llsc_mb();
+
+	return retval;
+}
+#else
+extern __u64 __xchg_u64_unsupported_on_32bit_kernels(volatile __u64 * m, __u64 val);
+#define __xchg_u64 __xchg_u64_unsupported_on_32bit_kernels
+#endif
+
+static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int size)
+{
+	switch (size) {
+	case 4:
+		return __xchg_u32(ptr, x);
+	case 8:
+		return __xchg_u64(ptr, x);
+	}
+
+	return x;
+}
+
+#define xchg(ptr, x)							\
+({									\
+	BUILD_BUG_ON(sizeof(*(ptr)) & ~0xc);				\
+									\
+	((__typeof__(*(ptr)))						\
+		__xchg((unsigned long)(x), (ptr), sizeof(*(ptr))));	\
+})
 
 #define __HAVE_ARCH_CMPXCHG 1
 
diff --git a/arch/mips/include/asm/dma.h b/arch/mips/include/asm/dma.h
index 2d47da62d5a..f5097f65a8a 100644
--- a/arch/mips/include/asm/dma.h
+++ b/arch/mips/include/asm/dma.h
@@ -15,7 +15,6 @@
 #include <asm/io.h>			/* need byte IO */
 #include <linux/spinlock.h>		/* And spinlocks */
 #include <linux/delay.h>
-#include <asm/system.h>
 
 
 #ifdef HAVE_REALLY_SLOW_DMA_CONTROLLER
diff --git a/arch/mips/include/asm/exec.h b/arch/mips/include/asm/exec.h
new file mode 100644
index 00000000000..c1f6afa4bc4
--- /dev/null
+++ b/arch/mips/include/asm/exec.h
@@ -0,0 +1,17 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1994, 95, 96, 97, 98, 99, 2003, 06 by Ralf Baechle
+ * Copyright (C) 1996 by Paul M. Antoine
+ * Copyright (C) 1999 Silicon Graphics
+ * Kevin D. Kissell, kevink@mips.org and Carsten Langgaard, carstenl@mips.com
+ * Copyright (C) 2000 MIPS Technologies, Inc.
+ */
+#ifndef _ASM_EXEC_H
+#define _ASM_EXEC_H
+
+extern unsigned long arch_align_stack(unsigned long sp);
+
+#endif /* _ASM_EXEC_H */
diff --git a/arch/mips/include/asm/mach-au1x00/au1000_dma.h b/arch/mips/include/asm/mach-au1x00/au1000_dma.h
index 59f5b55b220..ba4cf0e91c8 100644
--- a/arch/mips/include/asm/mach-au1x00/au1000_dma.h
+++ b/arch/mips/include/asm/mach-au1x00/au1000_dma.h
@@ -33,7 +33,6 @@
 #include <linux/io.h>		/* need byte IO */
 #include <linux/spinlock.h>	/* And spinlocks */
 #include <linux/delay.h>
-#include <asm/system.h>
 
 #define NUM_AU1000_DMA_CHANNELS	8
 
diff --git a/arch/mips/include/asm/processor.h b/arch/mips/include/asm/processor.h
index c104f1039a6..20e9dcf42b2 100644
--- a/arch/mips/include/asm/processor.h
+++ b/arch/mips/include/asm/processor.h
@@ -19,7 +19,6 @@
 #include <asm/cpu-info.h>
 #include <asm/mipsregs.h>
 #include <asm/prefetch.h>
-#include <asm/system.h>
 
 /*
  * Return current * instruction pointer ("program counter").
@@ -356,6 +355,12 @@ unsigned long get_wchan(struct task_struct *p);
 #define ARCH_HAS_PREFETCHW
 #define prefetchw(x) __builtin_prefetch((x), 1, 1)
 
+/*
+ * See Documentation/scheduler/sched-arch.txt; prevents deadlock on SMP
+ * systems.
+ */
+#define __ARCH_WANT_UNLOCKED_CTXSW
+
 #endif
 
 #endif /* _ASM_PROCESSOR_H */
diff --git a/arch/mips/include/asm/setup.h b/arch/mips/include/asm/setup.h
index 50511aac04e..6dce6d8d09a 100644
--- a/arch/mips/include/asm/setup.h
+++ b/arch/mips/include/asm/setup.h
@@ -5,6 +5,17 @@
 
 #ifdef  __KERNEL__
 extern void setup_early_printk(void);
+
+extern void set_handler(unsigned long offset, void *addr, unsigned long len);
+extern void set_uncached_handler(unsigned long offset, void *addr, unsigned long len);
+
+typedef void (*vi_handler_t)(void);
+extern void *set_vi_handler(int n, vi_handler_t addr);
+
+extern void *set_except_vector(int n, void *addr);
+extern unsigned long ebase;
+extern void per_cpu_trap_init(void);
+
 #endif /* __KERNEL__ */
 
 #endif /* __SETUP_H */
diff --git a/arch/mips/include/asm/switch_to.h b/arch/mips/include/asm/switch_to.h
new file mode 100644
index 00000000000..5d33621b565
--- /dev/null
+++ b/arch/mips/include/asm/switch_to.h
@@ -0,0 +1,85 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1994, 95, 96, 97, 98, 99, 2003, 06 by Ralf Baechle
+ * Copyright (C) 1996 by Paul M. Antoine
+ * Copyright (C) 1999 Silicon Graphics
+ * Kevin D. Kissell, kevink@mips.org and Carsten Langgaard, carstenl@mips.com
+ * Copyright (C) 2000 MIPS Technologies, Inc.
+ */
+#ifndef _ASM_SWITCH_TO_H
+#define _ASM_SWITCH_TO_H
+
+#include <asm/cpu-features.h>
+#include <asm/watch.h>
+#include <asm/dsp.h>
+
+struct task_struct;
+
+/*
+ * switch_to(n) should switch tasks to task nr n, first
+ * checking that n isn't the current task, in which case it does nothing.
+ */
+extern asmlinkage void *resume(void *last, void *next, void *next_ti);
+
+extern unsigned int ll_bit;
+extern struct task_struct *ll_task;
+
+#ifdef CONFIG_MIPS_MT_FPAFF
+
+/*
+ * Handle the scheduler resume end of FPU affinity management.  We do this
+ * inline to try to keep the overhead down. If we have been forced to run on
+ * a "CPU" with an FPU because of a previous high level of FP computation,
+ * but did not actually use the FPU during the most recent time-slice (CU1
+ * isn't set), we undo the restriction on cpus_allowed.
+ *
+ * We're not calling set_cpus_allowed() here, because we have no need to
+ * force prompt migration - we're already switching the current CPU to a
+ * different thread.
+ */
+
+#define __mips_mt_fpaff_switch_to(prev)					\
+do {									\
+	struct thread_info *__prev_ti = task_thread_info(prev);		\
+									\
+	if (cpu_has_fpu &&						\
+	    test_ti_thread_flag(__prev_ti, TIF_FPUBOUND) &&		\
+	    (!(KSTK_STATUS(prev) & ST0_CU1))) {				\
+		clear_ti_thread_flag(__prev_ti, TIF_FPUBOUND);		\
+		prev->cpus_allowed = prev->thread.user_cpus_allowed;	\
+	}								\
+	next->thread.emulated_fp = 0;					\
+} while(0)
+
+#else
+#define __mips_mt_fpaff_switch_to(prev) do { (void) (prev); } while (0)
+#endif
+
+#define __clear_software_ll_bit()					\
+do {									\
+	if (!__builtin_constant_p(cpu_has_llsc) || !cpu_has_llsc)	\
+		ll_bit = 0;						\
+} while (0)
+
+#define switch_to(prev, next, last)					\
+do {									\
+	__mips_mt_fpaff_switch_to(prev);				\
+	if (cpu_has_dsp)						\
+		__save_dsp(prev);					\
+	__clear_software_ll_bit();					\
+	(last) = resume(prev, next, task_thread_info(next));		\
+} while (0)
+
+#define finish_arch_switch(prev)					\
+do {									\
+	if (cpu_has_dsp)						\
+		__restore_dsp(current);					\
+	if (cpu_has_userlocal)						\
+		write_c0_userlocal(current_thread_info()->tp_value);	\
+	__restore_watch();						\
+} while (0)
+
+#endif /* _ASM_SWITCH_TO_H */
diff --git a/arch/mips/include/asm/system.h b/arch/mips/include/asm/system.h
index 6018c80ce37..a7f40578587 100644
--- a/arch/mips/include/asm/system.h
+++ b/arch/mips/include/asm/system.h
@@ -1,235 +1,5 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 1994, 95, 96, 97, 98, 99, 2003, 06 by Ralf Baechle
- * Copyright (C) 1996 by Paul M. Antoine
- * Copyright (C) 1999 Silicon Graphics
- * Kevin D. Kissell, kevink@mips.org and Carsten Langgaard, carstenl@mips.com
- * Copyright (C) 2000 MIPS Technologies, Inc.
- */
-#ifndef _ASM_SYSTEM_H
-#define _ASM_SYSTEM_H
-
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/irqflags.h>
-
-#include <asm/addrspace.h>
+/* FILE TO BE DELETED. DO NOT ADD STUFF HERE! */
 #include <asm/barrier.h>
 #include <asm/cmpxchg.h>
-#include <asm/cpu-features.h>
-#include <asm/dsp.h>
-#include <asm/watch.h>
-#include <asm/war.h>
-
-
-/*
- * switch_to(n) should switch tasks to task nr n, first
- * checking that n isn't the current task, in which case it does nothing.
- */
-extern asmlinkage void *resume(void *last, void *next, void *next_ti);
-
-struct task_struct;
-
-extern unsigned int ll_bit;
-extern struct task_struct *ll_task;
-
-#ifdef CONFIG_MIPS_MT_FPAFF
-
-/*
- * Handle the scheduler resume end of FPU affinity management.  We do this
- * inline to try to keep the overhead down. If we have been forced to run on
- * a "CPU" with an FPU because of a previous high level of FP computation,
- * but did not actually use the FPU during the most recent time-slice (CU1
- * isn't set), we undo the restriction on cpus_allowed.
- *
- * We're not calling set_cpus_allowed() here, because we have no need to
- * force prompt migration - we're already switching the current CPU to a
- * different thread.
- */
-
-#define __mips_mt_fpaff_switch_to(prev)					\
-do {									\
-	struct thread_info *__prev_ti = task_thread_info(prev);		\
-									\
-	if (cpu_has_fpu &&						\
-	    test_ti_thread_flag(__prev_ti, TIF_FPUBOUND) &&		\
-	    (!(KSTK_STATUS(prev) & ST0_CU1))) {				\
-		clear_ti_thread_flag(__prev_ti, TIF_FPUBOUND);		\
-		prev->cpus_allowed = prev->thread.user_cpus_allowed;	\
-	}								\
-	next->thread.emulated_fp = 0;					\
-} while(0)
-
-#else
-#define __mips_mt_fpaff_switch_to(prev) do { (void) (prev); } while (0)
-#endif
-
-#define __clear_software_ll_bit()					\
-do {									\
-	if (!__builtin_constant_p(cpu_has_llsc) || !cpu_has_llsc)	\
-		ll_bit = 0;						\
-} while (0)
-
-#define switch_to(prev, next, last)					\
-do {									\
-	__mips_mt_fpaff_switch_to(prev);				\
-	if (cpu_has_dsp)						\
-		__save_dsp(prev);					\
-	__clear_software_ll_bit();					\
-	(last) = resume(prev, next, task_thread_info(next));		\
-} while (0)
-
-#define finish_arch_switch(prev)					\
-do {									\
-	if (cpu_has_dsp)						\
-		__restore_dsp(current);					\
-	if (cpu_has_userlocal)						\
-		write_c0_userlocal(current_thread_info()->tp_value);	\
-	__restore_watch();						\
-} while (0)
-
-static inline unsigned long __xchg_u32(volatile int * m, unsigned int val)
-{
-	__u32 retval;
-
-	smp_mb__before_llsc();
-
-	if (kernel_uses_llsc && R10000_LLSC_WAR) {
-		unsigned long dummy;
-
-		__asm__ __volatile__(
-		"	.set	mips3					\n"
-		"1:	ll	%0, %3			# xchg_u32	\n"
-		"	.set	mips0					\n"
-		"	move	%2, %z4					\n"
-		"	.set	mips3					\n"
-		"	sc	%2, %1					\n"
-		"	beqzl	%2, 1b					\n"
-		"	.set	mips0					\n"
-		: "=&r" (retval), "=m" (*m), "=&r" (dummy)
-		: "R" (*m), "Jr" (val)
-		: "memory");
-	} else if (kernel_uses_llsc) {
-		unsigned long dummy;
-
-		do {
-			__asm__ __volatile__(
-			"	.set	mips3				\n"
-			"	ll	%0, %3		# xchg_u32	\n"
-			"	.set	mips0				\n"
-			"	move	%2, %z4				\n"
-			"	.set	mips3				\n"
-			"	sc	%2, %1				\n"
-			"	.set	mips0				\n"
-			: "=&r" (retval), "=m" (*m), "=&r" (dummy)
-			: "R" (*m), "Jr" (val)
-			: "memory");
-		} while (unlikely(!dummy));
-	} else {
-		unsigned long flags;
-
-		raw_local_irq_save(flags);
-		retval = *m;
-		*m = val;
-		raw_local_irq_restore(flags);	/* implies memory barrier  */
-	}
-
-	smp_llsc_mb();
-
-	return retval;
-}
-
-#ifdef CONFIG_64BIT
-static inline __u64 __xchg_u64(volatile __u64 * m, __u64 val)
-{
-	__u64 retval;
-
-	smp_mb__before_llsc();
-
-	if (kernel_uses_llsc && R10000_LLSC_WAR) {
-		unsigned long dummy;
-
-		__asm__ __volatile__(
-		"	.set	mips3					\n"
-		"1:	lld	%0, %3			# xchg_u64	\n"
-		"	move	%2, %z4					\n"
-		"	scd	%2, %1					\n"
-		"	beqzl	%2, 1b					\n"
-		"	.set	mips0					\n"
-		: "=&r" (retval), "=m" (*m), "=&r" (dummy)
-		: "R" (*m), "Jr" (val)
-		: "memory");
-	} else if (kernel_uses_llsc) {
-		unsigned long dummy;
-
-		do {
-			__asm__ __volatile__(
-			"	.set	mips3				\n"
-			"	lld	%0, %3		# xchg_u64	\n"
-			"	move	%2, %z4				\n"
-			"	scd	%2, %1				\n"
-			"	.set	mips0				\n"
-			: "=&r" (retval), "=m" (*m), "=&r" (dummy)
-			: "R" (*m), "Jr" (val)
-			: "memory");
-		} while (unlikely(!dummy));
-	} else {
-		unsigned long flags;
-
-		raw_local_irq_save(flags);
-		retval = *m;
-		*m = val;
-		raw_local_irq_restore(flags);	/* implies memory barrier  */
-	}
-
-	smp_llsc_mb();
-
-	return retval;
-}
-#else
-extern __u64 __xchg_u64_unsupported_on_32bit_kernels(volatile __u64 * m, __u64 val);
-#define __xchg_u64 __xchg_u64_unsupported_on_32bit_kernels
-#endif
-
-static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int size)
-{
-	switch (size) {
-	case 4:
-		return __xchg_u32(ptr, x);
-	case 8:
-		return __xchg_u64(ptr, x);
-	}
-
-	return x;
-}
-
-#define xchg(ptr, x)							\
-({									\
-	BUILD_BUG_ON(sizeof(*(ptr)) & ~0xc);				\
-									\
-	((__typeof__(*(ptr)))						\
-		__xchg((unsigned long)(x), (ptr), sizeof(*(ptr))));	\
-})
-
-extern void set_handler(unsigned long offset, void *addr, unsigned long len);
-extern void set_uncached_handler(unsigned long offset, void *addr, unsigned long len);
-
-typedef void (*vi_handler_t)(void);
-extern void *set_vi_handler(int n, vi_handler_t addr);
-
-extern void *set_except_vector(int n, void *addr);
-extern unsigned long ebase;
-extern void per_cpu_trap_init(void);
-
-/*
- * See include/asm-ia64/system.h; prevents deadlock on SMP
- * systems.
- */
-#define __ARCH_WANT_UNLOCKED_CTXSW
-
-extern unsigned long arch_align_stack(unsigned long sp);
-
-#endif /* _ASM_SYSTEM_H */
+#include <asm/exec.h>
+#include <asm/switch_to.h>
diff --git a/arch/mips/include/asm/txx9/jmr3927.h b/arch/mips/include/asm/txx9/jmr3927.h
index a409c446bf1..8808d7f82da 100644
--- a/arch/mips/include/asm/txx9/jmr3927.h
+++ b/arch/mips/include/asm/txx9/jmr3927.h
@@ -12,7 +12,6 @@
 
 #include <asm/txx9/tx3927.h>
 #include <asm/addrspace.h>
-#include <asm/system.h>
 #include <asm/txx9irq.h>
 
 /* CS */
diff --git a/arch/mips/kernel/cpu-bugs64.c b/arch/mips/kernel/cpu-bugs64.c
index f305ca14351..d6a18644365 100644
--- a/arch/mips/kernel/cpu-bugs64.c
+++ b/arch/mips/kernel/cpu-bugs64.c
@@ -16,7 +16,7 @@
 #include <asm/cpu.h>
 #include <asm/fpu.h>
 #include <asm/mipsregs.h>
-#include <asm/system.h>
+#include <asm/setup.h>
 
 static char bug64hit[] __initdata =
 	"reliable operation impossible!\n%s";
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index 0bab464b8e3..5099201fb7b 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -22,7 +22,6 @@
 #include <asm/cpu.h>
 #include <asm/fpu.h>
 #include <asm/mipsregs.h>
-#include <asm/system.h>
 #include <asm/watch.h>
 #include <asm/elf.h>
 #include <asm/spram.h>
diff --git a/arch/mips/kernel/irq-rm7000.c b/arch/mips/kernel/irq-rm7000.c
index a8a8977d588..b0662cf97ea 100644
--- a/arch/mips/kernel/irq-rm7000.c
+++ b/arch/mips/kernel/irq-rm7000.c
@@ -16,7 +16,6 @@
 
 #include <asm/irq_cpu.h>
 #include <asm/mipsregs.h>
-#include <asm/system.h>
 
 static inline void unmask_rm7k_irq(struct irq_data *d)
 {
diff --git a/arch/mips/kernel/irq-rm9000.c b/arch/mips/kernel/irq-rm9000.c
index 38874a4b925..1282b9ae81c 100644
--- a/arch/mips/kernel/irq-rm9000.c
+++ b/arch/mips/kernel/irq-rm9000.c
@@ -17,7 +17,6 @@
 
 #include <asm/irq_cpu.h>
 #include <asm/mipsregs.h>
-#include <asm/system.h>
 
 static inline void unmask_rm9k_irq(struct irq_data *d)
 {
diff --git a/arch/mips/kernel/irq.c b/arch/mips/kernel/irq.c
index 7f50318061b..a5aa43d07c8 100644
--- a/arch/mips/kernel/irq.c
+++ b/arch/mips/kernel/irq.c
@@ -23,7 +23,6 @@
 #include <linux/ftrace.h>
 
 #include <linux/atomic.h>
-#include <asm/system.h>
 #include <asm/uaccess.h>
 
 #ifdef CONFIG_KGDB
diff --git a/arch/mips/kernel/irq_cpu.c b/arch/mips/kernel/irq_cpu.c
index 191eb52228c..972263bcf40 100644
--- a/arch/mips/kernel/irq_cpu.c
+++ b/arch/mips/kernel/irq_cpu.c
@@ -35,7 +35,6 @@
 #include <asm/irq_cpu.h>
 #include <asm/mipsregs.h>
 #include <asm/mipsmtregs.h>
-#include <asm/system.h>
 
 static inline void unmask_mips_irq(struct irq_data *d)
 {
diff --git a/arch/mips/kernel/mips-mt.c b/arch/mips/kernel/mips-mt.c
index c23d11f6851..7f3376b1c21 100644
--- a/arch/mips/kernel/mips-mt.c
+++ b/arch/mips/kernel/mips-mt.c
@@ -13,7 +13,6 @@
 #include <asm/cpu.h>
 #include <asm/processor.h>
 #include <linux/atomic.h>
-#include <asm/system.h>
 #include <asm/hardirq.h>
 #include <asm/mmu_context.h>
 #include <asm/mipsmtregs.h>
diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c
index 61f1cb45a1d..e9a5fd7277f 100644
--- a/arch/mips/kernel/process.c
+++ b/arch/mips/kernel/process.c
@@ -32,7 +32,6 @@
 #include <asm/dsp.h>
 #include <asm/fpu.h>
 #include <asm/pgtable.h>
-#include <asm/system.h>
 #include <asm/mipsregs.h>
 #include <asm/processor.h>
 #include <asm/uaccess.h>
diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
index 7786b608d93..7c24c2973c6 100644
--- a/arch/mips/kernel/ptrace.c
+++ b/arch/mips/kernel/ptrace.c
@@ -34,7 +34,6 @@
 #include <asm/mipsmtregs.h>
 #include <asm/pgtable.h>
 #include <asm/page.h>
-#include <asm/system.h>
 #include <asm/uaccess.h>
 #include <asm/bootinfo.h>
 #include <asm/reg.h>
diff --git a/arch/mips/kernel/ptrace32.c b/arch/mips/kernel/ptrace32.c
index 32644b4a071..a3b017815ef 100644
--- a/arch/mips/kernel/ptrace32.c
+++ b/arch/mips/kernel/ptrace32.c
@@ -32,7 +32,6 @@
 #include <asm/mipsmtregs.h>
 #include <asm/pgtable.h>
 #include <asm/page.h>
-#include <asm/system.h>
 #include <asm/uaccess.h>
 #include <asm/bootinfo.h>
 
diff --git a/arch/mips/kernel/rtlx.c b/arch/mips/kernel/rtlx.c
index a9d801dec6b..b8c18dcdd2c 100644
--- a/arch/mips/kernel/rtlx.c
+++ b/arch/mips/kernel/rtlx.c
@@ -38,7 +38,6 @@
 #include <linux/atomic.h>
 #include <asm/cpu.h>
 #include <asm/processor.h>
-#include <asm/system.h>
 #include <asm/vpe.h>
 #include <asm/rtlx.h>
 
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index 058e964e730..c504b212f8f 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -31,7 +31,6 @@
 #include <asm/sections.h>
 #include <asm/setup.h>
 #include <asm/smp-ops.h>
-#include <asm/system.h>
 #include <asm/prom.h>
 
 struct cpuinfo_mips cpu_data[NR_CPUS] __read_mostly;
diff --git a/arch/mips/kernel/signal.c b/arch/mips/kernel/signal.c
index f8524003676..185ca00c4c8 100644
--- a/arch/mips/kernel/signal.c
+++ b/arch/mips/kernel/signal.c
@@ -34,6 +34,7 @@
 #include <asm/cpu-features.h>
 #include <asm/war.h>
 #include <asm/vdso.h>
+#include <asm/dsp.h>
 
 #include "signal-common.h"
 
diff --git a/arch/mips/kernel/signal32.c b/arch/mips/kernel/signal32.c
index aae98661379..06b5da392e2 100644
--- a/arch/mips/kernel/signal32.c
+++ b/arch/mips/kernel/signal32.c
@@ -29,10 +29,10 @@
 #include <asm/cacheflush.h>
 #include <asm/sim.h>
 #include <asm/ucontext.h>
-#include <asm/system.h>
 #include <asm/fpu.h>
 #include <asm/war.h>
 #include <asm/vdso.h>
+#include <asm/dsp.h>
 
 #include "signal-common.h"
 
diff --git a/arch/mips/kernel/signal_n32.c b/arch/mips/kernel/signal_n32.c
index ee24d814d5b..ae29e894ab8 100644
--- a/arch/mips/kernel/signal_n32.c
+++ b/arch/mips/kernel/signal_n32.c
@@ -35,7 +35,6 @@
 #include <asm/sim.h>
 #include <asm/uaccess.h>
 #include <asm/ucontext.h>
-#include <asm/system.h>
 #include <asm/fpu.h>
 #include <asm/cpu-features.h>
 #include <asm/war.h>
diff --git a/arch/mips/kernel/smp-bmips.c b/arch/mips/kernel/smp-bmips.c
index d5e950ab852..ca673569fd2 100644
--- a/arch/mips/kernel/smp-bmips.c
+++ b/arch/mips/kernel/smp-bmips.c
@@ -28,7 +28,6 @@
 #include <asm/time.h>
 #include <asm/pgtable.h>
 #include <asm/processor.h>
-#include <asm/system.h>
 #include <asm/bootinfo.h>
 #include <asm/pmon.h>
 #include <asm/cacheflush.h>
diff --git a/arch/mips/kernel/smp-cmp.c b/arch/mips/kernel/smp-cmp.c
index fe309516065..e7e03ecf549 100644
--- a/arch/mips/kernel/smp-cmp.c
+++ b/arch/mips/kernel/smp-cmp.c
@@ -29,7 +29,6 @@
 #include <asm/cacheflush.h>
 #include <asm/cpu.h>
 #include <asm/processor.h>
-#include <asm/system.h>
 #include <asm/hardirq.h>
 #include <asm/mmu_context.h>
 #include <asm/smp.h>
diff --git a/arch/mips/kernel/smp-mt.c b/arch/mips/kernel/smp-mt.c
index ce9e286f0a7..ff17868734c 100644
--- a/arch/mips/kernel/smp-mt.c
+++ b/arch/mips/kernel/smp-mt.c
@@ -28,7 +28,6 @@
 #include <asm/cacheflush.h>
 #include <asm/cpu.h>
 #include <asm/processor.h>
-#include <asm/system.h>
 #include <asm/hardirq.h>
 #include <asm/mmu_context.h>
 #include <asm/time.h>
diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c
index 32c1e954cd3..9c1cce9de35 100644
--- a/arch/mips/kernel/smp.c
+++ b/arch/mips/kernel/smp.c
@@ -38,9 +38,9 @@
 #include <asm/cpu.h>
 #include <asm/processor.h>
 #include <asm/r4k-timer.h>
-#include <asm/system.h>
 #include <asm/mmu_context.h>
 #include <asm/time.h>
+#include <asm/setup.h>
 
 #ifdef CONFIG_MIPS_MT_SMTC
 #include <asm/mipsmtregs.h>
diff --git a/arch/mips/kernel/smtc-proc.c b/arch/mips/kernel/smtc-proc.c
index 928a5a61e1a..145771c0ed7 100644
--- a/arch/mips/kernel/smtc-proc.c
+++ b/arch/mips/kernel/smtc-proc.c
@@ -11,7 +11,6 @@
 #include <asm/cpu.h>
 #include <asm/processor.h>
 #include <linux/atomic.h>
-#include <asm/system.h>
 #include <asm/hardirq.h>
 #include <asm/mmu_context.h>
 #include <asm/mipsregs.h>
diff --git a/arch/mips/kernel/smtc.c b/arch/mips/kernel/smtc.c
index 0a42ff3ff6a..c4f75bbc0bd 100644
--- a/arch/mips/kernel/smtc.c
+++ b/arch/mips/kernel/smtc.c
@@ -31,7 +31,6 @@
 #include <asm/cpu.h>
 #include <asm/processor.h>
 #include <linux/atomic.h>
-#include <asm/system.h>
 #include <asm/hardirq.h>
 #include <asm/hazards.h>
 #include <asm/irq.h>
diff --git a/arch/mips/kernel/spram.c b/arch/mips/kernel/spram.c
index 1821d12a641..6af08d896e2 100644
--- a/arch/mips/kernel/spram.c
+++ b/arch/mips/kernel/spram.c
@@ -15,7 +15,6 @@
 
 #include <asm/fpu.h>
 #include <asm/mipsregs.h>
-#include <asm/system.h>
 #include <asm/r4kcache.h>
 #include <asm/hazards.h>
 
diff --git a/arch/mips/kernel/syscall.c b/arch/mips/kernel/syscall.c
index d02765708dd..b08220c8211 100644
--- a/arch/mips/kernel/syscall.c
+++ b/arch/mips/kernel/syscall.c
@@ -37,6 +37,7 @@
 #include <asm/shmparam.h>
 #include <asm/sysmips.h>
 #include <asm/uaccess.h>
+#include <asm/switch_to.h>
 
 /*
  * For historic reasons the pipe(2) syscall on MIPS has an unusual calling
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index d79ae5437b5..cfdaaa4cffc 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -45,7 +45,6 @@
 #include <asm/pgtable.h>
 #include <asm/ptrace.h>
 #include <asm/sections.h>
-#include <asm/system.h>
 #include <asm/tlbdebug.h>
 #include <asm/traps.h>
 #include <asm/uaccess.h>
diff --git a/arch/mips/kernel/unaligned.c b/arch/mips/kernel/unaligned.c
index aedb8941caa..9c58bdf58f2 100644
--- a/arch/mips/kernel/unaligned.c
+++ b/arch/mips/kernel/unaligned.c
@@ -85,7 +85,6 @@
 #include <asm/cop2.h>
 #include <asm/inst.h>
 #include <asm/uaccess.h>
-#include <asm/system.h>
 
 #define STR(x)  __STR(x)
 #define __STR(x)  #x
diff --git a/arch/mips/kernel/vpe.c b/arch/mips/kernel/vpe.c
index bfa12a4f97b..f6f91523cb1 100644
--- a/arch/mips/kernel/vpe.c
+++ b/arch/mips/kernel/vpe.c
@@ -49,7 +49,6 @@
 #include <asm/cpu.h>
 #include <asm/mips_mt.h>
 #include <asm/processor.h>
-#include <asm/system.h>
 #include <asm/vpe.h>
 #include <asm/kspd.h>
 
diff --git a/arch/mips/lasat/reset.c b/arch/mips/lasat/reset.c
index b1e7a89fb73..e21f0b9a586 100644
--- a/arch/mips/lasat/reset.c
+++ b/arch/mips/lasat/reset.c
@@ -21,7 +21,6 @@
 #include <linux/pm.h>
 
 #include <asm/reboot.h>
-#include <asm/system.h>
 #include <asm/lasat/lasat.h>
 
 #include "picvue.h"
diff --git a/arch/mips/math-emu/dsemul.c b/arch/mips/math-emu/dsemul.c
index 3c4a8c5ba7f..384a3b0091e 100644
--- a/arch/mips/math-emu/dsemul.c
+++ b/arch/mips/math-emu/dsemul.c
@@ -12,7 +12,6 @@
 #include <asm/uaccess.h>
 #include <asm/branch.h>
 #include <asm/mipsregs.h>
-#include <asm/system.h>
 #include <asm/cacheflush.h>
 
 #include <asm/fpu_emulator.h>
diff --git a/arch/mips/mipssim/sim_smtc.c b/arch/mips/mipssim/sim_smtc.c
index 915063991f6..3c104abd8aa 100644
--- a/arch/mips/mipssim/sim_smtc.c
+++ b/arch/mips/mipssim/sim_smtc.c
@@ -28,7 +28,6 @@
 #include <asm/cpu.h>
 #include <asm/processor.h>
 #include <asm/smtc.h>
-#include <asm/system.h>
 #include <asm/mmu_context.h>
 #include <asm/smtc_ipi.h>
 
diff --git a/arch/mips/mipssim/sim_time.c b/arch/mips/mipssim/sim_time.c
index 5492c42f765..77bad3c0428 100644
--- a/arch/mips/mipssim/sim_time.c
+++ b/arch/mips/mipssim/sim_time.c
@@ -11,6 +11,7 @@
 #include <asm/hardirq.h>
 #include <asm/div64.h>
 #include <asm/cpu.h>
+#include <asm/setup.h>
 #include <asm/time.h>
 #include <asm/irq.h>
 #include <asm/mc146818-time.h>
diff --git a/arch/mips/mm/c-octeon.c b/arch/mips/mm/c-octeon.c
index cf7895db073..1f9ca07f53c 100644
--- a/arch/mips/mm/c-octeon.c
+++ b/arch/mips/mm/c-octeon.c
@@ -21,7 +21,6 @@
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/r4kcache.h>
-#include <asm/system.h>
 #include <asm/mmu_context.h>
 #include <asm/war.h>
 
diff --git a/arch/mips/mm/c-r3k.c b/arch/mips/mm/c-r3k.c
index 0765583d0c9..031c4c2cdf2 100644
--- a/arch/mips/mm/c-r3k.c
+++ b/arch/mips/mm/c-r3k.c
@@ -18,7 +18,6 @@
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/mmu_context.h>
-#include <asm/system.h>
 #include <asm/isadep.h>
 #include <asm/io.h>
 #include <asm/bootinfo.h>
diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index c97087d12d0..bda8eb26ece 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -29,7 +29,6 @@
 #include <asm/pgtable.h>
 #include <asm/r4kcache.h>
 #include <asm/sections.h>
-#include <asm/system.h>
 #include <asm/mmu_context.h>
 #include <asm/war.h>
 #include <asm/cacheflush.h> /* for run_uncached() */
diff --git a/arch/mips/mm/c-tx39.c b/arch/mips/mm/c-tx39.c
index a43c197ccf8..87d23cada6d 100644
--- a/arch/mips/mm/c-tx39.c
+++ b/arch/mips/mm/c-tx39.c
@@ -18,7 +18,6 @@
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/mmu_context.h>
-#include <asm/system.h>
 #include <asm/isadep.h>
 #include <asm/io.h>
 #include <asm/bootinfo.h>
diff --git a/arch/mips/mm/fault.c b/arch/mips/mm/fault.c
index 69ebd586d7f..c14f6dfed99 100644
--- a/arch/mips/mm/fault.c
+++ b/arch/mips/mm/fault.c
@@ -22,7 +22,6 @@
 
 #include <asm/branch.h>
 #include <asm/mmu_context.h>
-#include <asm/system.h>
 #include <asm/uaccess.h>
 #include <asm/ptrace.h>
 #include <asm/highmem.h>		/* For VMALLOC_END */
diff --git a/arch/mips/mm/page.c b/arch/mips/mm/page.c
index 36272f7d374..cc0b626858b 100644
--- a/arch/mips/mm/page.c
+++ b/arch/mips/mm/page.c
@@ -22,7 +22,6 @@
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/prefetch.h>
-#include <asm/system.h>
 #include <asm/bootinfo.h>
 #include <asm/mipsregs.h>
 #include <asm/mmu_context.h>
diff --git a/arch/mips/mm/sc-ip22.c b/arch/mips/mm/sc-ip22.c
index a6bd11fba7b..1eb708ef75f 100644
--- a/arch/mips/mm/sc-ip22.c
+++ b/arch/mips/mm/sc-ip22.c
@@ -12,7 +12,6 @@
 #include <asm/bcache.h>
 #include <asm/page.h>
 #include <asm/pgtable.h>
-#include <asm/system.h>
 #include <asm/bootinfo.h>
 #include <asm/sgi/ip22.h>
 #include <asm/sgi/mc.h>
diff --git a/arch/mips/mm/sc-mips.c b/arch/mips/mm/sc-mips.c
index 9cca8de0054..93d937b4b1b 100644
--- a/arch/mips/mm/sc-mips.c
+++ b/arch/mips/mm/sc-mips.c
@@ -11,7 +11,6 @@
 #include <asm/cacheops.h>
 #include <asm/page.h>
 #include <asm/pgtable.h>
-#include <asm/system.h>
 #include <asm/mmu_context.h>
 #include <asm/r4kcache.h>
 
diff --git a/arch/mips/mm/sc-r5k.c b/arch/mips/mm/sc-r5k.c
index ae1e533a096..8d90ff25b12 100644
--- a/arch/mips/mm/sc-r5k.c
+++ b/arch/mips/mm/sc-r5k.c
@@ -12,7 +12,6 @@
 #include <asm/cacheops.h>
 #include <asm/page.h>
 #include <asm/pgtable.h>
-#include <asm/system.h>
 #include <asm/mmu_context.h>
 #include <asm/r4kcache.h>
 
diff --git a/arch/mips/mm/tlb-r3k.c b/arch/mips/mm/tlb-r3k.c
index ed1fa460f84..a63d1ed0827 100644
--- a/arch/mips/mm/tlb-r3k.c
+++ b/arch/mips/mm/tlb-r3k.c
@@ -19,7 +19,6 @@
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/mmu_context.h>
-#include <asm/system.h>
 #include <asm/tlbmisc.h>
 #include <asm/isadep.h>
 #include <asm/io.h>
diff --git a/arch/mips/mm/tlb-r4k.c b/arch/mips/mm/tlb-r4k.c
index 2dc625346c4..d2572cb232d 100644
--- a/arch/mips/mm/tlb-r4k.c
+++ b/arch/mips/mm/tlb-r4k.c
@@ -18,7 +18,6 @@
 #include <asm/bootinfo.h>
 #include <asm/mmu_context.h>
 #include <asm/pgtable.h>
-#include <asm/system.h>
 #include <asm/tlbmisc.h>
 
 extern void build_tlb_refill_handler(void);
diff --git a/arch/mips/mm/tlb-r8k.c b/arch/mips/mm/tlb-r8k.c
index 3d95f76c106..91c2499f806 100644
--- a/arch/mips/mm/tlb-r8k.c
+++ b/arch/mips/mm/tlb-r8k.c
@@ -17,7 +17,6 @@
 #include <asm/bootinfo.h>
 #include <asm/mmu_context.h>
 #include <asm/pgtable.h>
-#include <asm/system.h>
 
 extern void build_tlb_refill_handler(void);
 
diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c
index e06370f58ef..0bc485b3cd6 100644
--- a/arch/mips/mm/tlbex.c
+++ b/arch/mips/mm/tlbex.c
@@ -32,6 +32,7 @@
 #include <asm/pgtable.h>
 #include <asm/war.h>
 #include <asm/uasm.h>
+#include <asm/setup.h>
 
 /*
  * TLB load/store/modify handlers.
diff --git a/arch/mips/mti-malta/malta-init.c b/arch/mips/mti-malta/malta-init.c
index 4b988b9a30d..27a6cdb36e3 100644
--- a/arch/mips/mti-malta/malta-init.c
+++ b/arch/mips/mti-malta/malta-init.c
@@ -26,7 +26,6 @@
 #include <asm/bootinfo.h>
 #include <asm/gt64120.h>
 #include <asm/io.h>
-#include <asm/system.h>
 #include <asm/cacheflush.h>
 #include <asm/smp-ops.h>
 #include <asm/traps.h>
diff --git a/arch/mips/mti-malta/malta-int.c b/arch/mips/mti-malta/malta-int.c
index a588b5cef8d..7b13a4caeea 100644
--- a/arch/mips/mti-malta/malta-int.c
+++ b/arch/mips/mti-malta/malta-int.c
@@ -44,6 +44,7 @@
 #include <asm/msc01_ic.h>
 #include <asm/gic.h>
 #include <asm/gcmpregs.h>
+#include <asm/setup.h>
 
 int gcmp_present = -1;
 int gic_present;
diff --git a/arch/mips/mti-malta/malta-time.c b/arch/mips/mti-malta/malta-time.c
index f8ee945ee41..115f5bc0600 100644
--- a/arch/mips/mti-malta/malta-time.c
+++ b/arch/mips/mti-malta/malta-time.c
@@ -35,6 +35,7 @@
 #include <asm/irq.h>
 #include <asm/div64.h>
 #include <asm/cpu.h>
+#include <asm/setup.h>
 #include <asm/time.h>
 #include <asm/mc146818-time.h>
 #include <asm/msc01_ic.h>
diff --git a/arch/mips/netlogic/common/irq.c b/arch/mips/netlogic/common/irq.c
index 49a4f6cf71e..e52bfcbce09 100644
--- a/arch/mips/netlogic/common/irq.c
+++ b/arch/mips/netlogic/common/irq.c
@@ -43,7 +43,6 @@
 
 #include <asm/errno.h>
 #include <asm/signal.h>
-#include <asm/system.h>
 #include <asm/ptrace.h>
 #include <asm/mipsregs.h>
 #include <asm/thread_info.h>
diff --git a/arch/mips/pmc-sierra/msp71xx/msp_irq_cic.c b/arch/mips/pmc-sierra/msp71xx/msp_irq_cic.c
index c4fa2d775d8..2e6f7cab24c 100644
--- a/arch/mips/pmc-sierra/msp71xx/msp_irq_cic.c
+++ b/arch/mips/pmc-sierra/msp71xx/msp_irq_cic.c
@@ -16,7 +16,6 @@
 #include <linux/irq.h>
 
 #include <asm/mipsregs.h>
-#include <asm/system.h>
 
 #include <msp_cic_int.h>
 #include <msp_regs.h>
diff --git a/arch/mips/pmc-sierra/msp71xx/msp_irq_per.c b/arch/mips/pmc-sierra/msp71xx/msp_irq_per.c
index 98fd0099d96..598b6a66b97 100644
--- a/arch/mips/pmc-sierra/msp71xx/msp_irq_per.c
+++ b/arch/mips/pmc-sierra/msp71xx/msp_irq_per.c
@@ -16,7 +16,6 @@
 #include <linux/bitops.h>
 
 #include <asm/mipsregs.h>
-#include <asm/system.h>
 
 #include <msp_cic_int.h>
 #include <msp_regs.h>
diff --git a/arch/mips/pmc-sierra/msp71xx/msp_irq_slp.c b/arch/mips/pmc-sierra/msp71xx/msp_irq_slp.c
index 5bbcc47da6b..83a1c5eae3f 100644
--- a/arch/mips/pmc-sierra/msp71xx/msp_irq_slp.c
+++ b/arch/mips/pmc-sierra/msp71xx/msp_irq_slp.c
@@ -16,7 +16,6 @@
 #include <linux/bitops.h>
 
 #include <asm/mipsregs.h>
-#include <asm/system.h>
 
 #include <msp_slp_int.h>
 #include <msp_regs.h>
diff --git a/arch/mips/pmc-sierra/yosemite/irq.c b/arch/mips/pmc-sierra/yosemite/irq.c
index 25bbbf428be..6590812daa5 100644
--- a/arch/mips/pmc-sierra/yosemite/irq.c
+++ b/arch/mips/pmc-sierra/yosemite/irq.c
@@ -44,7 +44,6 @@
 #include <asm/irq.h>
 #include <asm/irq_cpu.h>
 #include <asm/mipsregs.h>
-#include <asm/system.h>
 #include <asm/titan_dep.h>
 
 /* Hypertransport specific */
diff --git a/arch/mips/pmc-sierra/yosemite/prom.c b/arch/mips/pmc-sierra/yosemite/prom.c
index dcc926e06fc..6a2754c4f10 100644
--- a/arch/mips/pmc-sierra/yosemite/prom.c
+++ b/arch/mips/pmc-sierra/yosemite/prom.c
@@ -20,7 +20,6 @@
 #include <asm/processor.h>
 #include <asm/reboot.h>
 #include <asm/smp-ops.h>
-#include <asm/system.h>
 #include <asm/bootinfo.h>
 #include <asm/pmon.h>
 
diff --git a/arch/mips/pnx833x/common/interrupts.c b/arch/mips/pnx833x/common/interrupts.c
index adc171c8846..a86d5d5fceb 100644
--- a/arch/mips/pnx833x/common/interrupts.c
+++ b/arch/mips/pnx833x/common/interrupts.c
@@ -25,6 +25,7 @@
 #include <linux/interrupt.h>
 #include <asm/mipsregs.h>
 #include <asm/irq_cpu.h>
+#include <asm/setup.h>
 #include <irq.h>
 #include <irq-mapping.h>
 #include <gpio.h>
diff --git a/arch/mips/powertv/asic/asic_int.c b/arch/mips/powertv/asic/asic_int.c
index 529c44a52d6..99d82e10000 100644
--- a/arch/mips/powertv/asic/asic_int.c
+++ b/arch/mips/powertv/asic/asic_int.c
@@ -34,6 +34,7 @@
 #include <asm/irq_cpu.h>
 #include <linux/io.h>
 #include <asm/irq_regs.h>
+#include <asm/setup.h>
 #include <asm/mips-boards/generic.h>
 
 #include <asm/mach-powertv/asic_regs.h>
diff --git a/arch/mips/powertv/asic/irq_asic.c b/arch/mips/powertv/asic/irq_asic.c
index 7fb97fb0931..fa9ae958471 100644
--- a/arch/mips/powertv/asic/irq_asic.c
+++ b/arch/mips/powertv/asic/irq_asic.c
@@ -17,7 +17,6 @@
 
 #include <asm/irq_cpu.h>
 #include <asm/mipsregs.h>
-#include <asm/system.h>
 
 #include <asm/mach-powertv/asic_regs.h>
 
diff --git a/arch/mips/powertv/init.c b/arch/mips/powertv/init.c
index 83552288e80..1cf5abbef71 100644
--- a/arch/mips/powertv/init.c
+++ b/arch/mips/powertv/init.c
@@ -26,7 +26,6 @@
 
 #include <asm/bootinfo.h>
 #include <linux/io.h>
-#include <asm/system.h>
 #include <asm/cacheflush.h>
 #include <asm/traps.h>
 
diff --git a/arch/mips/rb532/irq.c b/arch/mips/rb532/irq.c
index 7c6db74e3fa..f298430cff0 100644
--- a/arch/mips/rb532/irq.c
+++ b/arch/mips/rb532/irq.c
@@ -42,7 +42,6 @@
 #include <asm/bootinfo.h>
 #include <asm/time.h>
 #include <asm/mipsregs.h>
-#include <asm/system.h>
 
 #include <asm/mach-rc32434/irq.h>
 #include <asm/mach-rc32434/gpio.h>
diff --git a/arch/mips/sgi-ip22/ip22-berr.c b/arch/mips/sgi-ip22/ip22-berr.c
index 911d3999c0c..3f6ccd53c15 100644
--- a/arch/mips/sgi-ip22/ip22-berr.c
+++ b/arch/mips/sgi-ip22/ip22-berr.c
@@ -9,7 +9,6 @@
 #include <linux/sched.h>
 
 #include <asm/addrspace.h>
-#include <asm/system.h>
 #include <asm/traps.h>
 #include <asm/branch.h>
 #include <asm/irq_regs.h>
diff --git a/arch/mips/sgi-ip22/ip22-reset.c b/arch/mips/sgi-ip22/ip22-reset.c
index 45b6694c207..20363d29cb5 100644
--- a/arch/mips/sgi-ip22/ip22-reset.c
+++ b/arch/mips/sgi-ip22/ip22-reset.c
@@ -18,7 +18,6 @@
 
 #include <asm/io.h>
 #include <asm/irq.h>
-#include <asm/system.h>
 #include <asm/reboot.h>
 #include <asm/sgialib.h>
 #include <asm/sgi/ioc.h>
diff --git a/arch/mips/sgi-ip22/ip28-berr.c b/arch/mips/sgi-ip22/ip28-berr.c
index 88c684e05a3..0626555fd1a 100644
--- a/arch/mips/sgi-ip22/ip28-berr.c
+++ b/arch/mips/sgi-ip22/ip28-berr.c
@@ -11,7 +11,6 @@
 #include <linux/seq_file.h>
 
 #include <asm/addrspace.h>
-#include <asm/system.h>
 #include <asm/traps.h>
 #include <asm/branch.h>
 #include <asm/irq_regs.h>
diff --git a/arch/mips/sgi-ip27/ip27-irq.c b/arch/mips/sgi-ip27/ip27-irq.c
index 23642238c68..69a939ae65e 100644
--- a/arch/mips/sgi-ip27/ip27-irq.c
+++ b/arch/mips/sgi-ip27/ip27-irq.c
@@ -27,7 +27,6 @@
 #include <asm/bootinfo.h>
 #include <asm/io.h>
 #include <asm/mipsregs.h>
-#include <asm/system.h>
 
 #include <asm/processor.h>
 #include <asm/pci/bridge.h>
diff --git a/arch/mips/sgi-ip27/ip27-reset.c b/arch/mips/sgi-ip27/ip27-reset.c
index c17076108d4..f347bc6b795 100644
--- a/arch/mips/sgi-ip27/ip27-reset.c
+++ b/arch/mips/sgi-ip27/ip27-reset.c
@@ -19,7 +19,6 @@
 #include <asm/io.h>
 #include <asm/irq.h>
 #include <asm/reboot.h>
-#include <asm/system.h>
 #include <asm/sgialib.h>
 #include <asm/sn/addrs.h>
 #include <asm/sn/arch.h>
diff --git a/arch/mips/sgi-ip32/ip32-irq.c b/arch/mips/sgi-ip32/ip32-irq.c
index a092860d519..e7d5054de8c 100644
--- a/arch/mips/sgi-ip32/ip32-irq.c
+++ b/arch/mips/sgi-ip32/ip32-irq.c
@@ -22,7 +22,6 @@
 #include <asm/irq_cpu.h>
 #include <asm/mipsregs.h>
 #include <asm/signal.h>
-#include <asm/system.h>
 #include <asm/time.h>
 #include <asm/ip32/crime.h>
 #include <asm/ip32/mace.h>
diff --git a/arch/mips/sgi-ip32/ip32-reset.c b/arch/mips/sgi-ip32/ip32-reset.c
index 9b95d80ebc6..1f823da4c77 100644
--- a/arch/mips/sgi-ip32/ip32-reset.c
+++ b/arch/mips/sgi-ip32/ip32-reset.c
@@ -20,7 +20,6 @@
 #include <asm/addrspace.h>
 #include <asm/irq.h>
 #include <asm/reboot.h>
-#include <asm/system.h>
 #include <asm/wbflush.h>
 #include <asm/ip32/mace.h>
 #include <asm/ip32/crime.h>
diff --git a/arch/mips/sibyte/bcm1480/irq.c b/arch/mips/sibyte/bcm1480/irq.c
index 09740d60e18..215713e1f3c 100644
--- a/arch/mips/sibyte/bcm1480/irq.c
+++ b/arch/mips/sibyte/bcm1480/irq.c
@@ -27,7 +27,6 @@
 #include <asm/errno.h>
 #include <asm/irq_regs.h>
 #include <asm/signal.h>
-#include <asm/system.h>
 #include <asm/io.h>
 
 #include <asm/sibyte/bcm1480_regs.h>
diff --git a/arch/mips/sibyte/common/sb_tbprof.c b/arch/mips/sibyte/common/sb_tbprof.c
index 48853ab5bcf..e8c4538c5f6 100644
--- a/arch/mips/sibyte/common/sb_tbprof.c
+++ b/arch/mips/sibyte/common/sb_tbprof.c
@@ -53,7 +53,6 @@
 #define K_INT_PERF_CNT K_BCM1480_INT_PERF_CNT
 #endif
 
-#include <asm/system.h>
 #include <asm/uaccess.h>
 
 #define SBPROF_TB_MAJOR 240
diff --git a/arch/mips/sibyte/sb1250/bus_watcher.c b/arch/mips/sibyte/sb1250/bus_watcher.c
index 45274bd3cd8..86e6e54dd15 100644
--- a/arch/mips/sibyte/sb1250/bus_watcher.c
+++ b/arch/mips/sibyte/sb1250/bus_watcher.c
@@ -30,7 +30,6 @@
 #include <linux/interrupt.h>
 #include <linux/sched.h>
 #include <linux/proc_fs.h>
-#include <asm/system.h>
 #include <asm/io.h>
 
 #include <asm/sibyte/sb1250.h>
diff --git a/arch/mips/sibyte/sb1250/irq.c b/arch/mips/sibyte/sb1250/irq.c
index 76ee045e2ce..340aaf62665 100644
--- a/arch/mips/sibyte/sb1250/irq.c
+++ b/arch/mips/sibyte/sb1250/irq.c
@@ -26,7 +26,6 @@
 
 #include <asm/errno.h>
 #include <asm/signal.h>
-#include <asm/system.h>
 #include <asm/time.h>
 #include <asm/io.h>
 
diff --git a/arch/mips/sni/reset.c b/arch/mips/sni/reset.c
index 79f8d70f48c..244f9427625 100644
--- a/arch/mips/sni/reset.c
+++ b/arch/mips/sni/reset.c
@@ -5,7 +5,6 @@
  */
 #include <asm/io.h>
 #include <asm/reboot.h>
-#include <asm/system.h>
 #include <asm/sni.h>
 
 /*
diff --git a/arch/mips/vr41xx/common/irq.c b/arch/mips/vr41xx/common/irq.c
index fad2bef432c..ae0e4ee6c61 100644
--- a/arch/mips/vr41xx/common/irq.c
+++ b/arch/mips/vr41xx/common/irq.c
@@ -22,7 +22,6 @@
 #include <linux/irq.h>
 
 #include <asm/irq_cpu.h>
-#include <asm/system.h>
 #include <asm/vr41xx/irq.h>
 
 typedef struct irq_cascade {
diff --git a/arch/mips/vr41xx/common/pmu.c b/arch/mips/vr41xx/common/pmu.c
index 692b4e85b7f..9fbf5f0d1fa 100644
--- a/arch/mips/vr41xx/common/pmu.c
+++ b/arch/mips/vr41xx/common/pmu.c
@@ -30,7 +30,6 @@
 #include <asm/io.h>
 #include <asm/processor.h>
 #include <asm/reboot.h>
-#include <asm/system.h>
 
 #define PMU_TYPE1_BASE	0x0b0000a0UL
 #define PMU_TYPE1_SIZE	0x0eUL