Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into next

40 files changed, 719 insertions, 2042 deletions

diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile
index 43b740d0e37..8269d892874 100644
--- a/arch/arm/kernel/Makefile
+++ b/arch/arm/kernel/Makefile
@@ -7,6 +7,8 @@ AFLAGS_head.o        := -DTEXT_OFFSET=$(TEXT_OFFSET)
 
 ifdef CONFIG_FUNCTION_TRACER
 CFLAGS_REMOVE_ftrace.o = -pg
+CFLAGS_REMOVE_insn.o = -pg
+CFLAGS_REMOVE_patch.o = -pg
 endif
 
 CFLAGS_REMOVE_return_address.o = -pg
@@ -14,8 +16,8 @@ CFLAGS_REMOVE_return_address.o = -pg
 # Object file lists.
 
 obj-y		:= elf.o entry-armv.o entry-common.o irq.o opcodes.o \
-		   process.o ptrace.o return_address.o setup.o signal.o \
-		   sys_arm.o stacktrace.o time.o traps.o
+		   process.o ptrace.o return_address.o sched_clock.o \
+		   setup.o signal.o stacktrace.o sys_arm.o time.o traps.o
 
 obj-$(CONFIG_DEPRECATED_PARAM_STRUCT) += compat.o
 
@@ -23,21 +25,20 @@ obj-$(CONFIG_LEDS)		+= leds.o
 obj-$(CONFIG_OC_ETM)		+= etm.o
 
 obj-$(CONFIG_ISA_DMA_API)	+= dma.o
-obj-$(CONFIG_ARCH_ACORN)	+= ecard.o 
 obj-$(CONFIG_FIQ)		+= fiq.o fiqasm.o
 obj-$(CONFIG_MODULES)		+= armksyms.o module.o
 obj-$(CONFIG_ARTHUR)		+= arthur.o
 obj-$(CONFIG_ISA_DMA)		+= dma-isa.o
 obj-$(CONFIG_PCI)		+= bios32.o isa.o
 obj-$(CONFIG_ARM_CPU_SUSPEND)	+= sleep.o suspend.o
-obj-$(CONFIG_HAVE_SCHED_CLOCK)	+= sched_clock.o
 obj-$(CONFIG_SMP)		+= smp.o smp_tlb.o
 obj-$(CONFIG_HAVE_ARM_SCU)	+= smp_scu.o
 obj-$(CONFIG_HAVE_ARM_TWD)	+= smp_twd.o
-obj-$(CONFIG_DYNAMIC_FTRACE)	+= ftrace.o
-obj-$(CONFIG_FUNCTION_GRAPH_TRACER)	+= ftrace.o
+obj-$(CONFIG_DYNAMIC_FTRACE)	+= ftrace.o insn.o
+obj-$(CONFIG_FUNCTION_GRAPH_TRACER)	+= ftrace.o insn.o
+obj-$(CONFIG_JUMP_LABEL)	+= jump_label.o insn.o patch.o
 obj-$(CONFIG_KEXEC)		+= machine_kexec.o relocate_kernel.o
-obj-$(CONFIG_KPROBES)		+= kprobes.o kprobes-common.o
+obj-$(CONFIG_KPROBES)		+= kprobes.o kprobes-common.o patch.o
 ifdef CONFIG_THUMB2_KERNEL
 obj-$(CONFIG_KPROBES)		+= kprobes-thumb.o
 else
@@ -62,9 +63,6 @@ obj-$(CONFIG_SWP_EMULATE)	+= swp_emulate.o
 CFLAGS_swp_emulate.o		:= -Wa,-march=armv7-a
 obj-$(CONFIG_HAVE_HW_BREAKPOINT)	+= hw_breakpoint.o
 
-obj-$(CONFIG_CRUNCH)		+= crunch.o crunch-bits.o
-AFLAGS_crunch-bits.o		:= -Wa,-mcpu=ep9312
-
 obj-$(CONFIG_CPU_XSCALE)	+= xscale-cp0.o
 obj-$(CONFIG_CPU_XSC3)		+= xscale-cp0.o
 obj-$(CONFIG_CPU_MOHAWK)	+= xscale-cp0.o
diff --git a/arch/arm/kernel/armksyms.c b/arch/arm/kernel/armksyms.c
index 5b0bce61eb6..b57c75e0b01 100644
--- a/arch/arm/kernel/armksyms.c
+++ b/arch/arm/kernel/armksyms.c
@@ -18,7 +18,6 @@
 #include <linux/io.h>
 
 #include <asm/checksum.h>
-#include <asm/system.h>
 #include <asm/ftrace.h>
 
 /*
diff --git a/arch/arm/kernel/bios32.c b/arch/arm/kernel/bios32.c
index f58ba358990..632df9a66f8 100644
--- a/arch/arm/kernel/bios32.c
+++ b/arch/arm/kernel/bios32.c
@@ -16,7 +16,6 @@
 #include <asm/mach/pci.h>
 
 static int debug_pci;
-static int use_firmware;
 
 /*
  * We can't use pci_find_device() here since we are
@@ -295,28 +294,6 @@ static inline int pdev_bad_for_parity(struct pci_dev *dev)
 }
 
 /*
- * Adjust the device resources from bus-centric to Linux-centric.
- */
-static void __devinit
-pdev_fixup_device_resources(struct pci_sys_data *root, struct pci_dev *dev)
-{
-	resource_size_t offset;
-	int i;
-
-	for (i = 0; i < PCI_NUM_RESOURCES; i++) {
-		if (dev->resource[i].start == 0)
-			continue;
-		if (dev->resource[i].flags & IORESOURCE_MEM)
-			offset = root->mem_offset;
-		else
-			offset = root->io_offset;
-
-		dev->resource[i].start += offset;
-		dev->resource[i].end   += offset;
-	}
-}
-
-/*
  * pcibios_fixup_bus - Called after each bus is probed,
  * but before its children are examined.
  */
@@ -333,8 +310,6 @@ void pcibios_fixup_bus(struct pci_bus *bus)
 	list_for_each_entry(dev, &bus->devices, bus_list) {
 		u16 status;
 
-		pdev_fixup_device_resources(root, dev);
-
 		pci_read_config_word(dev, PCI_STATUS, &status);
 
 		/*
@@ -400,43 +375,6 @@ EXPORT_SYMBOL(pcibios_fixup_bus);
 #endif
 
 /*
- * Convert from Linux-centric to bus-centric addresses for bridge devices.
- */
-void
-pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
-			 struct resource *res)
-{
-	struct pci_sys_data *root = dev->sysdata;
-	unsigned long offset = 0;
-
-	if (res->flags & IORESOURCE_IO)
-		offset = root->io_offset;
-	if (res->flags & IORESOURCE_MEM)
-		offset = root->mem_offset;
-
-	region->start = res->start - offset;
-	region->end   = res->end - offset;
-}
-EXPORT_SYMBOL(pcibios_resource_to_bus);
-
-void __devinit
-pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
-			struct pci_bus_region *region)
-{
-	struct pci_sys_data *root = dev->sysdata;
-	unsigned long offset = 0;
-
-	if (res->flags & IORESOURCE_IO)
-		offset = root->io_offset;
-	if (res->flags & IORESOURCE_MEM)
-		offset = root->mem_offset;
-
-	res->start = region->start + offset;
-	res->end   = region->end + offset;
-}
-EXPORT_SYMBOL(pcibios_bus_to_resource);
-
-/*
  * Swizzle the device pin each time we cross a bridge.
  * This might update pin and returns the slot number.
  */
@@ -497,10 +435,10 @@ static void __init pcibios_init_hw(struct hw_pci *hw)
 
 		if (ret > 0) {
 			if (list_empty(&sys->resources)) {
-				pci_add_resource(&sys->resources,
-						 &ioport_resource);
-				pci_add_resource(&sys->resources,
-						 &iomem_resource);
+				pci_add_resource_offset(&sys->resources,
+					 &ioport_resource, sys->io_offset);
+				pci_add_resource_offset(&sys->resources,
+					 &iomem_resource, sys->mem_offset);
 			}
 
 			sys->bus = hw->scan(nr, sys);
@@ -525,6 +463,7 @@ void __init pci_common_init(struct hw_pci *hw)
 
 	INIT_LIST_HEAD(&hw->buses);
 
+	pci_add_flags(PCI_REASSIGN_ALL_RSRC);
 	if (hw->preinit)
 		hw->preinit();
 	pcibios_init_hw(hw);
@@ -536,7 +475,7 @@ void __init pci_common_init(struct hw_pci *hw)
 	list_for_each_entry(sys, &hw->buses, node) {
 		struct pci_bus *bus = sys->bus;
 
-		if (!use_firmware) {
+		if (!pci_has_flag(PCI_PROBE_ONLY)) {
 			/*
 			 * Size the bridge windows.
 			 */
@@ -573,7 +512,7 @@ char * __init pcibios_setup(char *str)
 		debug_pci = 1;
 		return NULL;
 	} else if (!strcmp(str, "firmware")) {
-		use_firmware = 1;
+		pci_add_flags(PCI_PROBE_ONLY);
 		return NULL;
 	}
 	return str;
diff --git a/arch/arm/kernel/crunch-bits.S b/arch/arm/kernel/crunch-bits.S
deleted file mode 100644
index 0ec9bb48fab..00000000000
--- a/arch/arm/kernel/crunch-bits.S
+++ /dev/null
@@ -1,305 +0,0 @@
-/*
- * arch/arm/kernel/crunch-bits.S
- * Cirrus MaverickCrunch context switching and handling
- *
- * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
- *
- * Shamelessly stolen from the iWMMXt code by Nicolas Pitre, which is
- * Copyright (c) 2003-2004, MontaVista Software, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/linkage.h>
-#include <asm/ptrace.h>
-#include <asm/thread_info.h>
-#include <asm/asm-offsets.h>
-#include <mach/ep93xx-regs.h>
-
-/*
- * We can't use hex constants here due to a bug in gas.
- */
-#define CRUNCH_MVDX0		0
-#define CRUNCH_MVDX1		8
-#define CRUNCH_MVDX2		16
-#define CRUNCH_MVDX3		24
-#define CRUNCH_MVDX4		32
-#define CRUNCH_MVDX5		40
-#define CRUNCH_MVDX6		48
-#define CRUNCH_MVDX7		56
-#define CRUNCH_MVDX8		64
-#define CRUNCH_MVDX9		72
-#define CRUNCH_MVDX10		80
-#define CRUNCH_MVDX11		88
-#define CRUNCH_MVDX12		96
-#define CRUNCH_MVDX13		104
-#define CRUNCH_MVDX14		112
-#define CRUNCH_MVDX15		120
-#define CRUNCH_MVAX0L		128
-#define CRUNCH_MVAX0M		132
-#define CRUNCH_MVAX0H		136
-#define CRUNCH_MVAX1L		140
-#define CRUNCH_MVAX1M		144
-#define CRUNCH_MVAX1H		148
-#define CRUNCH_MVAX2L		152
-#define CRUNCH_MVAX2M		156
-#define CRUNCH_MVAX2H		160
-#define CRUNCH_MVAX3L		164
-#define CRUNCH_MVAX3M		168
-#define CRUNCH_MVAX3H		172
-#define CRUNCH_DSPSC		176
-
-#define CRUNCH_SIZE		184
-
-	.text
-
-/*
- * Lazy switching of crunch coprocessor context
- *
- * r10 = struct thread_info pointer
- * r9  = ret_from_exception
- * lr  = undefined instr exit
- *
- * called from prefetch exception handler with interrupts disabled
- */
-ENTRY(crunch_task_enable)
-	ldr	r8, =(EP93XX_APB_VIRT_BASE + 0x00130000)	@ syscon addr
-
-	ldr	r1, [r8, #0x80]
-	tst	r1, #0x00800000			@ access to crunch enabled?
-	movne	pc, lr				@ if so no business here
-	mov	r3, #0xaa			@ unlock syscon swlock
-	str	r3, [r8, #0xc0]
-	orr	r1, r1, #0x00800000		@ enable access to crunch
-	str	r1, [r8, #0x80]
-
-	ldr	r3, =crunch_owner
-	add	r0, r10, #TI_CRUNCH_STATE	@ get task crunch save area
-	ldr	r2, [sp, #60]			@ current task pc value
-	ldr	r1, [r3]			@ get current crunch owner
-	str	r0, [r3]			@ this task now owns crunch
-	sub	r2, r2, #4			@ adjust pc back
-	str	r2, [sp, #60]
-
-	ldr	r2, [r8, #0x80]
-	mov	r2, r2				@ flush out enable (@@@)
-
-	teq	r1, #0				@ test for last ownership
-	mov	lr, r9				@ normal exit from exception
-	beq	crunch_load			@ no owner, skip save
-
-crunch_save:
-	cfstr64		mvdx0, [r1, #CRUNCH_MVDX0]	@ save 64b registers
-	cfstr64		mvdx1, [r1, #CRUNCH_MVDX1]
-	cfstr64		mvdx2, [r1, #CRUNCH_MVDX2]
-	cfstr64		mvdx3, [r1, #CRUNCH_MVDX3]
-	cfstr64		mvdx4, [r1, #CRUNCH_MVDX4]
-	cfstr64		mvdx5, [r1, #CRUNCH_MVDX5]
-	cfstr64		mvdx6, [r1, #CRUNCH_MVDX6]
-	cfstr64		mvdx7, [r1, #CRUNCH_MVDX7]
-	cfstr64		mvdx8, [r1, #CRUNCH_MVDX8]
-	cfstr64		mvdx9, [r1, #CRUNCH_MVDX9]
-	cfstr64		mvdx10, [r1, #CRUNCH_MVDX10]
-	cfstr64		mvdx11, [r1, #CRUNCH_MVDX11]
-	cfstr64		mvdx12, [r1, #CRUNCH_MVDX12]
-	cfstr64		mvdx13, [r1, #CRUNCH_MVDX13]
-	cfstr64		mvdx14, [r1, #CRUNCH_MVDX14]
-	cfstr64		mvdx15, [r1, #CRUNCH_MVDX15]
-
-#ifdef __ARMEB__
-#error fix me for ARMEB
-#endif
-
-	cfmv32al	mvfx0, mvax0			@ save 72b accumulators
-	cfstr32		mvfx0, [r1, #CRUNCH_MVAX0L]
-	cfmv32am	mvfx0, mvax0
-	cfstr32		mvfx0, [r1, #CRUNCH_MVAX0M]
-	cfmv32ah	mvfx0, mvax0
-	cfstr32		mvfx0, [r1, #CRUNCH_MVAX0H]
-	cfmv32al	mvfx0, mvax1
-	cfstr32		mvfx0, [r1, #CRUNCH_MVAX1L]
-	cfmv32am	mvfx0, mvax1
-	cfstr32		mvfx0, [r1, #CRUNCH_MVAX1M]
-	cfmv32ah	mvfx0, mvax1
-	cfstr32		mvfx0, [r1, #CRUNCH_MVAX1H]
-	cfmv32al	mvfx0, mvax2
-	cfstr32		mvfx0, [r1, #CRUNCH_MVAX2L]
-	cfmv32am	mvfx0, mvax2
-	cfstr32		mvfx0, [r1, #CRUNCH_MVAX2M]
-	cfmv32ah	mvfx0, mvax2
-	cfstr32		mvfx0, [r1, #CRUNCH_MVAX2H]
-	cfmv32al	mvfx0, mvax3
-	cfstr32		mvfx0, [r1, #CRUNCH_MVAX3L]
-	cfmv32am	mvfx0, mvax3
-	cfstr32		mvfx0, [r1, #CRUNCH_MVAX3M]
-	cfmv32ah	mvfx0, mvax3
-	cfstr32		mvfx0, [r1, #CRUNCH_MVAX3H]
-
-	cfmv32sc	mvdx0, dspsc			@ save status word
-	cfstr64		mvdx0, [r1, #CRUNCH_DSPSC]
-
-	teq		r0, #0				@ anything to load?
-	cfldr64eq	mvdx0, [r1, #CRUNCH_MVDX0]	@ mvdx0 was clobbered
-	moveq		pc, lr
-
-crunch_load:
-	cfldr64		mvdx0, [r0, #CRUNCH_DSPSC]	@ load status word
-	cfmvsc32	dspsc, mvdx0
-
-	cfldr32		mvfx0, [r0, #CRUNCH_MVAX0L]	@ load 72b accumulators
-	cfmval32	mvax0, mvfx0
-	cfldr32		mvfx0, [r0, #CRUNCH_MVAX0M]
-	cfmvam32	mvax0, mvfx0
-	cfldr32		mvfx0, [r0, #CRUNCH_MVAX0H]
-	cfmvah32	mvax0, mvfx0
-	cfldr32		mvfx0, [r0, #CRUNCH_MVAX1L]
-	cfmval32	mvax1, mvfx0
-	cfldr32		mvfx0, [r0, #CRUNCH_MVAX1M]
-	cfmvam32	mvax1, mvfx0
-	cfldr32		mvfx0, [r0, #CRUNCH_MVAX1H]
-	cfmvah32	mvax1, mvfx0
-	cfldr32		mvfx0, [r0, #CRUNCH_MVAX2L]
-	cfmval32	mvax2, mvfx0
-	cfldr32		mvfx0, [r0, #CRUNCH_MVAX2M]
-	cfmvam32	mvax2, mvfx0
-	cfldr32		mvfx0, [r0, #CRUNCH_MVAX2H]
-	cfmvah32	mvax2, mvfx0
-	cfldr32		mvfx0, [r0, #CRUNCH_MVAX3L]
-	cfmval32	mvax3, mvfx0
-	cfldr32		mvfx0, [r0, #CRUNCH_MVAX3M]
-	cfmvam32	mvax3, mvfx0
-	cfldr32		mvfx0, [r0, #CRUNCH_MVAX3H]
-	cfmvah32	mvax3, mvfx0
-
-	cfldr64		mvdx0, [r0, #CRUNCH_MVDX0]	@ load 64b registers
-	cfldr64		mvdx1, [r0, #CRUNCH_MVDX1]
-	cfldr64		mvdx2, [r0, #CRUNCH_MVDX2]
-	cfldr64		mvdx3, [r0, #CRUNCH_MVDX3]
-	cfldr64		mvdx4, [r0, #CRUNCH_MVDX4]
-	cfldr64		mvdx5, [r0, #CRUNCH_MVDX5]
-	cfldr64		mvdx6, [r0, #CRUNCH_MVDX6]
-	cfldr64		mvdx7, [r0, #CRUNCH_MVDX7]
-	cfldr64		mvdx8, [r0, #CRUNCH_MVDX8]
-	cfldr64		mvdx9, [r0, #CRUNCH_MVDX9]
-	cfldr64		mvdx10, [r0, #CRUNCH_MVDX10]
-	cfldr64		mvdx11, [r0, #CRUNCH_MVDX11]
-	cfldr64		mvdx12, [r0, #CRUNCH_MVDX12]
-	cfldr64		mvdx13, [r0, #CRUNCH_MVDX13]
-	cfldr64		mvdx14, [r0, #CRUNCH_MVDX14]
-	cfldr64		mvdx15, [r0, #CRUNCH_MVDX15]
-
-	mov	pc, lr
-
-/*
- * Back up crunch regs to save area and disable access to them
- * (mainly for gdb or sleep mode usage)
- *
- * r0 = struct thread_info pointer of target task or NULL for any
- */
-ENTRY(crunch_task_disable)
-	stmfd	sp!, {r4, r5, lr}
-
-	mrs	ip, cpsr
-	orr	r2, ip, #PSR_I_BIT		@ disable interrupts
-	msr	cpsr_c, r2
-
-	ldr	r4, =(EP93XX_APB_VIRT_BASE + 0x00130000)	@ syscon addr
-
-	ldr	r3, =crunch_owner
-	add	r2, r0, #TI_CRUNCH_STATE	@ get task crunch save area
-	ldr	r1, [r3]			@ get current crunch owner
-	teq	r1, #0				@ any current owner?
-	beq	1f				@ no: quit
-	teq	r0, #0				@ any owner?
-	teqne	r1, r2				@ or specified one?
-	bne	1f				@ no: quit
-
-	ldr	r5, [r4, #0x80]			@ enable access to crunch
-	mov	r2, #0xaa
-	str	r2, [r4, #0xc0]
-	orr	r5, r5, #0x00800000
-	str	r5, [r4, #0x80]
-
-	mov	r0, #0				@ nothing to load
-	str	r0, [r3]			@ no more current owner
-	ldr	r2, [r4, #0x80]			@ flush out enable (@@@)
-	mov	r2, r2
-	bl	crunch_save
-
-	mov	r2, #0xaa			@ disable access to crunch
-	str	r2, [r4, #0xc0]
-	bic	r5, r5, #0x00800000
-	str	r5, [r4, #0x80]
-	ldr	r5, [r4, #0x80]			@ flush out enable (@@@)
-	mov	r5, r5
-
-1:	msr	cpsr_c, ip			@ restore interrupt mode
-	ldmfd	sp!, {r4, r5, pc}
-
-/*
- * Copy crunch state to given memory address
- *
- * r0 = struct thread_info pointer of target task
- * r1 = memory address where to store crunch state
- *
- * this is called mainly in the creation of signal stack frames
- */
-ENTRY(crunch_task_copy)
-	mrs	ip, cpsr
-	orr	r2, ip, #PSR_I_BIT		@ disable interrupts
-	msr	cpsr_c, r2
-
-	ldr	r3, =crunch_owner
-	add	r2, r0, #TI_CRUNCH_STATE	@ get task crunch save area
-	ldr	r3, [r3]			@ get current crunch owner
-	teq	r2, r3				@ does this task own it...
-	beq	1f
-
-	@ current crunch values are in the task save area
-	msr	cpsr_c, ip			@ restore interrupt mode
-	mov	r0, r1
-	mov	r1, r2
-	mov	r2, #CRUNCH_SIZE
-	b	memcpy
-
-1:	@ this task owns crunch regs -- grab a copy from there
-	mov	r0, #0				@ nothing to load
-	mov	r3, lr				@ preserve return address
-	bl	crunch_save
-	msr	cpsr_c, ip			@ restore interrupt mode
-	mov	pc, r3
-
-/*
- * Restore crunch state from given memory address
- *
- * r0 = struct thread_info pointer of target task
- * r1 = memory address where to get crunch state from
- *
- * this is used to restore crunch state when unwinding a signal stack frame
- */
-ENTRY(crunch_task_restore)
-	mrs	ip, cpsr
-	orr	r2, ip, #PSR_I_BIT		@ disable interrupts
-	msr	cpsr_c, r2
-
-	ldr	r3, =crunch_owner
-	add	r2, r0, #TI_CRUNCH_STATE	@ get task crunch save area
-	ldr	r3, [r3]			@ get current crunch owner
-	teq	r2, r3				@ does this task own it...
-	beq	1f
-
-	@ this task doesn't own crunch regs -- use its save area
-	msr	cpsr_c, ip			@ restore interrupt mode
-	mov	r0, r2
-	mov	r2, #CRUNCH_SIZE
-	b	memcpy
-
-1:	@ this task owns crunch regs -- load them directly
-	mov	r0, r1
-	mov	r1, #0				@ nothing to save
-	mov	r3, lr				@ preserve return address
-	bl	crunch_load
-	msr	cpsr_c, ip			@ restore interrupt mode
-	mov	pc, r3
diff --git a/arch/arm/kernel/crunch.c b/arch/arm/kernel/crunch.c
deleted file mode 100644
index 25ef223ba7f..00000000000
--- a/arch/arm/kernel/crunch.c
+++ /dev/null
@@ -1,88 +0,0 @@
-/*
- * arch/arm/kernel/crunch.c
- * Cirrus MaverickCrunch context switching and handling
- *
- * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/init.h>
-#include <linux/io.h>
-#include <mach/ep93xx-regs.h>
-#include <asm/thread_notify.h>
-
-struct crunch_state *crunch_owner;
-
-void crunch_task_release(struct thread_info *thread)
-{
-	local_irq_disable();
-	if (crunch_owner == &thread->crunchstate)
-		crunch_owner = NULL;
-	local_irq_enable();
-}
-
-static int crunch_enabled(u32 devcfg)
-{
-	return !!(devcfg & EP93XX_SYSCON_DEVCFG_CPENA);
-}
-
-static int crunch_do(struct notifier_block *self, unsigned long cmd, void *t)
-{
-	struct thread_info *thread = (struct thread_info *)t;
-	struct crunch_state *crunch_state;
-	u32 devcfg;
-
-	crunch_state = &thread->crunchstate;
-
-	switch (cmd) {
-	case THREAD_NOTIFY_FLUSH:
-		memset(crunch_state, 0, sizeof(*crunch_state));
-
-		/*
-		 * FALLTHROUGH: Ensure we don't try to overwrite our newly
-		 * initialised state information on the first fault.
-		 */
-
-	case THREAD_NOTIFY_EXIT:
-		crunch_task_release(thread);
-		break;
-
-	case THREAD_NOTIFY_SWITCH:
-		devcfg = __raw_readl(EP93XX_SYSCON_DEVCFG);
-		if (crunch_enabled(devcfg) || crunch_owner == crunch_state) {
-			/*
-			 * We don't use ep93xx_syscon_swlocked_write() here
-			 * because we are on the context switch path and
-			 * preemption is already disabled.
-			 */
-			devcfg ^= EP93XX_SYSCON_DEVCFG_CPENA;
-			__raw_writel(0xaa, EP93XX_SYSCON_SWLOCK);
-			__raw_writel(devcfg, EP93XX_SYSCON_DEVCFG);
-		}
-		break;
-	}
-
-	return NOTIFY_DONE;
-}
-
-static struct notifier_block crunch_notifier_block = {
-	.notifier_call	= crunch_do,
-};
-
-static int __init crunch_init(void)
-{
-	thread_register_notifier(&crunch_notifier_block);
-	elf_hwcap |= HWCAP_CRUNCH;
-
-	return 0;
-}
-
-late_initcall(crunch_init);
diff --git a/arch/arm/kernel/debug.S b/arch/arm/kernel/debug.S
index 204e2160cfc..c45522c3678 100644
--- a/arch/arm/kernel/debug.S
+++ b/arch/arm/kernel/debug.S
@@ -10,6 +10,7 @@
  *  32-bit debugging code
  */
 #include <linux/linkage.h>
+#include <asm/assembler.h>
 
 		.text
 
@@ -100,7 +101,7 @@
 
 #endif	/* CONFIG_CPU_V6 */
 
-#else
+#elif !defined(CONFIG_DEBUG_SEMIHOSTING)
 #include <mach/debug-macro.S>
 #endif	/* CONFIG_DEBUG_ICEDCC */
 
@@ -155,6 +156,8 @@ hexbuf:		.space 16
 
 		.ltorg
 
+#ifndef CONFIG_DEBUG_SEMIHOSTING
+
 ENTRY(printascii)
 		addruart_current r3, r1, r2
 		b	2f
@@ -177,3 +180,24 @@ ENTRY(printch)
 		mov	r0, #0
 		b	1b
 ENDPROC(printch)
+
+#else
+
+ENTRY(printascii)
+		mov	r1, r0
+		mov	r0, #0x04		@ SYS_WRITE0
+	ARM(	svc	#0x123456	)
+	THUMB(	svc	#0xab		)
+		mov	pc, lr
+ENDPROC(printascii)
+
+ENTRY(printch)
+		adr	r1, hexbuf
+		strb	r0, [r1]
+		mov	r0, #0x03		@ SYS_WRITEC
+	ARM(	svc	#0x123456	)
+	THUMB(	svc	#0xab		)
+		mov	pc, lr
+ENDPROC(printch)
+
+#endif
diff --git a/arch/arm/kernel/ecard.c b/arch/arm/kernel/ecard.c
deleted file mode 100644
index 1651d495074..00000000000
--- a/arch/arm/kernel/ecard.c
+++ /dev/null
@@ -1,1232 +0,0 @@
-/*
- *  linux/arch/arm/kernel/ecard.c
- *
- *  Copyright 1995-2001 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- *  Find all installed expansion cards, and handle interrupts from them.
- *
- *  Created from information from Acorns RiscOS3 PRMs
- *
- *  08-Dec-1996	RMK	Added code for the 9'th expansion card - the ether
- *			podule slot.
- *  06-May-1997	RMK	Added blacklist for cards whose loader doesn't work.
- *  12-Sep-1997	RMK	Created new handling of interrupt enables/disables
- *			- cards can now register their own routine to control
- *			interrupts (recommended).
- *  29-Sep-1997	RMK	Expansion card interrupt hardware not being re-enabled
- *			on reset from Linux. (Caused cards not to respond
- *			under RiscOS without hard reset).
- *  15-Feb-1998	RMK	Added DMA support
- *  12-Sep-1998	RMK	Added EASI support
- *  10-Jan-1999	RMK	Run loaders in a simulated RISC OS environment.
- *  17-Apr-1999	RMK	Support for EASI Type C cycles.
- */
-#define ECARD_C
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/sched.h>
-#include <linux/interrupt.h>
-#include <linux/completion.h>
-#include <linux/reboot.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-#include <linux/device.h>
-#include <linux/init.h>
-#include <linux/mutex.h>
-#include <linux/kthread.h>
-#include <linux/io.h>
-
-#include <asm/dma.h>
-#include <asm/ecard.h>
-#include <mach/hardware.h>
-#include <asm/irq.h>
-#include <asm/mmu_context.h>
-#include <asm/mach/irq.h>
-#include <asm/tlbflush.h>
-
-#include "ecard.h"
-
-#ifndef CONFIG_ARCH_RPC
-#define HAVE_EXPMASK
-#endif
-
-struct ecard_request {
-	void		(*fn)(struct ecard_request *);
-	ecard_t		*ec;
-	unsigned int	address;
-	unsigned int	length;
-	unsigned int	use_loader;
-	void		*buffer;
-	struct completion *complete;
-};
-
-struct expcard_blacklist {
-	unsigned short	 manufacturer;
-	unsigned short	 product;
-	const char	*type;
-};
-
-static ecard_t *cards;
-static ecard_t *slot_to_expcard[MAX_ECARDS];
-static unsigned int ectcr;
-#ifdef HAS_EXPMASK
-static unsigned int have_expmask;
-#endif
-
-/* List of descriptions of cards which don't have an extended
- * identification, or chunk directories containing a description.
- */
-static struct expcard_blacklist __initdata blacklist[] = {
-	{ MANU_ACORN, PROD_ACORN_ETHER1, "Acorn Ether1" }
-};
-
-asmlinkage extern int
-ecard_loader_reset(unsigned long base, loader_t loader);
-asmlinkage extern int
-ecard_loader_read(int off, unsigned long base, loader_t loader);
-
-static inline unsigned short ecard_getu16(unsigned char *v)
-{
-	return v[0] | v[1] << 8;
-}
-
-static inline signed long ecard_gets24(unsigned char *v)
-{
-	return v[0] | v[1] << 8 | v[2] << 16 | ((v[2] & 0x80) ? 0xff000000 : 0);
-}
-
-static inline ecard_t *slot_to_ecard(unsigned int slot)
-{
-	return slot < MAX_ECARDS ? slot_to_expcard[slot] : NULL;
-}
-
-/* ===================== Expansion card daemon ======================== */
-/*
- * Since the loader programs on the expansion cards need to be run
- * in a specific environment, create a separate task with this
- * environment up, and pass requests to this task as and when we
- * need to.
- *
- * This should allow 99% of loaders to be called from Linux.
- *
- * From a security standpoint, we trust the card vendors.  This
- * may be a misplaced trust.
- */
-static void ecard_task_reset(struct ecard_request *req)
-{
-	struct expansion_card *ec = req->ec;
-	struct resource *res;
-
-	res = ec->slot_no == 8
-		? &ec->resource[ECARD_RES_MEMC]
-		: ec->easi
-		  ? &ec->resource[ECARD_RES_EASI]
-		  : &ec->resource[ECARD_RES_IOCSYNC];
-
-	ecard_loader_reset(res->start, ec->loader);
-}
-
-static void ecard_task_readbytes(struct ecard_request *req)
-{
-	struct expansion_card *ec = req->ec;
-	unsigned char *buf = req->buffer;
-	unsigned int len = req->length;
-	unsigned int off = req->address;
-
-	if (ec->slot_no == 8) {
-		void __iomem *base = (void __iomem *)
-				ec->resource[ECARD_RES_MEMC].start;
-
-		/*
-		 * The card maintains an index which increments the address
-		 * into a 4096-byte page on each access.  We need to keep
-		 * track of the counter.
-		 */
-		static unsigned int index;
-		unsigned int page;
-
-		page = (off >> 12) * 4;
-		if (page > 256 * 4)
-			return;
-
-		off &= 4095;
-
-		/*
-		 * If we are reading offset 0, or our current index is
-		 * greater than the offset, reset the hardware index counter.
-		 */
-		if (off == 0 || index > off) {
-			writeb(0, base);
-			index = 0;
-		}
-
-		/*
-		 * Increment the hardware index counter until we get to the
-		 * required offset.  The read bytes are discarded.
-		 */
-		while (index < off) {
-			readb(base + page);
-			index += 1;
-		}
-
-		while (len--) {
-			*buf++ = readb(base + page);
-			index += 1;
-		}
-	} else {
-		unsigned long base = (ec->easi
-			 ? &ec->resource[ECARD_RES_EASI]
-			 : &ec->resource[ECARD_RES_IOCSYNC])->start;
-		void __iomem *pbase = (void __iomem *)base;
-
-		if (!req->use_loader || !ec->loader) {
-			off *= 4;
-			while (len--) {
-				*buf++ = readb(pbase + off);
-				off += 4;
-			}
-		} else {
-			while(len--) {
-				/*
-				 * The following is required by some
-				 * expansion card loader programs.
-				 */
-				*(unsigned long *)0x108 = 0;
-				*buf++ = ecard_loader_read(off++, base,
-							   ec->loader);
-			}
-		}
-	}
-
-}
-
-static DECLARE_WAIT_QUEUE_HEAD(ecard_wait);
-static struct ecard_request *ecard_req;
-static DEFINE_MUTEX(ecard_mutex);
-
-/*
- * Set up the expansion card daemon's page tables.
- */
-static void ecard_init_pgtables(struct mm_struct *mm)
-{
-	struct vm_area_struct vma;
-
-	/* We want to set up the page tables for the following mapping:
-	 *  Virtual	Physical
-	 *  0x03000000	0x03000000
-	 *  0x03010000	unmapped
-	 *  0x03210000	0x03210000
-	 *  0x03400000	unmapped
-	 *  0x08000000	0x08000000
-	 *  0x10000000	unmapped
-	 *
-	 * FIXME: we don't follow this 100% yet.
-	 */
-	pgd_t *src_pgd, *dst_pgd;
-
-	src_pgd = pgd_offset(mm, (unsigned long)IO_BASE);
-	dst_pgd = pgd_offset(mm, IO_START);
-
-	memcpy(dst_pgd, src_pgd, sizeof(pgd_t) * (IO_SIZE / PGDIR_SIZE));
-
-	src_pgd = pgd_offset(mm, (unsigned long)EASI_BASE);
-	dst_pgd = pgd_offset(mm, EASI_START);
-
-	memcpy(dst_pgd, src_pgd, sizeof(pgd_t) * (EASI_SIZE / PGDIR_SIZE));
-
-	vma.vm_flags = VM_EXEC;
-	vma.vm_mm = mm;
-
-	flush_tlb_range(&vma, IO_START, IO_START + IO_SIZE);
-	flush_tlb_range(&vma, EASI_START, EASI_START + EASI_SIZE);
-}
-
-static int ecard_init_mm(void)
-{
-	struct mm_struct * mm = mm_alloc();
-	struct mm_struct *active_mm = current->active_mm;
-
-	if (!mm)
-		return -ENOMEM;
-
-	current->mm = mm;
-	current->active_mm = mm;
-	activate_mm(active_mm, mm);
-	mmdrop(active_mm);
-	ecard_init_pgtables(mm);
-	return 0;
-}
-
-static int
-ecard_task(void * unused)
-{
-	/*
-	 * Allocate a mm.  We're not a lazy-TLB kernel task since we need
-	 * to set page table entries where the user space would be.  Note
-	 * that this also creates the page tables.  Failure is not an
-	 * option here.
-	 */
-	if (ecard_init_mm())
-		panic("kecardd: unable to alloc mm\n");
-
-	while (1) {
-		struct ecard_request *req;
-
-		wait_event_interruptible(ecard_wait, ecard_req != NULL);
-
-		req = xchg(&ecard_req, NULL);
-		if (req != NULL) {
-			req->fn(req);
-			complete(req->complete);
-		}
-	}
-}
-
-/*
- * Wake the expansion card daemon to action our request.
- *
- * FIXME: The test here is not sufficient to detect if the
- * kcardd is running.
- */
-static void ecard_call(struct ecard_request *req)
-{
-	DECLARE_COMPLETION_ONSTACK(completion);
-
-	req->complete = &completion;
-
-	mutex_lock(&ecard_mutex);
-	ecard_req = req;
-	wake_up(&ecard_wait);
-
-	/*
-	 * Now wait for kecardd to run.
-	 */
-	wait_for_completion(&completion);
-	mutex_unlock(&ecard_mutex);
-}
-
-/* ======================= Mid-level card control ===================== */
-
-static void
-ecard_readbytes(void *addr, ecard_t *ec, int off, int len, int useld)
-{
-	struct ecard_request req;
-
-	req.fn		= ecard_task_readbytes;
-	req.ec		= ec;
-	req.address	= off;
-	req.length	= len;
-	req.use_loader	= useld;
-	req.buffer	= addr;
-
-	ecard_call(&req);
-}
-
-int ecard_readchunk(struct in_chunk_dir *cd, ecard_t *ec, int id, int num)
-{
-	struct ex_chunk_dir excd;
-	int index = 16;
-	int useld = 0;
-
-	if (!ec->cid.cd)
-		return 0;
-
-	while(1) {
-		ecard_readbytes(&excd, ec, index, 8, useld);
-		index += 8;
-		if (c_id(&excd) == 0) {
-			if (!useld && ec->loader) {
-				useld = 1;
-				index = 0;
-				continue;
-			}
-			return 0;
-		}
-		if (c_id(&excd) == 0xf0) { /* link */
-			index = c_start(&excd);
-			continue;
-		}
-		if (c_id(&excd) == 0x80) { /* loader */
-			if (!ec->loader) {
-				ec->loader = kmalloc(c_len(&excd),
-							       GFP_KERNEL);
-				if (ec->loader)
-					ecard_readbytes(ec->loader, ec,
-							(int)c_start(&excd),
-							c_len(&excd), useld);
-				else
-					return 0;
-			}
-			continue;
-		}
-		if (c_id(&excd) == id && num-- == 0)
-			break;
-	}
-
-	if (c_id(&excd) & 0x80) {
-		switch (c_id(&excd) & 0x70) {
-		case 0x70:
-			ecard_readbytes((unsigned char *)excd.d.string, ec,
-					(int)c_start(&excd), c_len(&excd),
-					useld);
-			break;
-		case 0x00:
-			break;
-		}
-	}
-	cd->start_offset = c_start(&excd);
-	memcpy(cd->d.string, excd.d.string, 256);
-	return 1;
-}
-
-/* ======================= Interrupt control ============================ */
-
-static void ecard_def_irq_enable(ecard_t *ec, int irqnr)
-{
-#ifdef HAS_EXPMASK
-	if (irqnr < 4 && have_expmask) {
-		have_expmask |= 1 << irqnr;
-		__raw_writeb(have_expmask, EXPMASK_ENABLE);
-	}
-#endif
-}
-
-static void ecard_def_irq_disable(ecard_t *ec, int irqnr)
-{
-#ifdef HAS_EXPMASK
-	if (irqnr < 4 && have_expmask) {
-		have_expmask &= ~(1 << irqnr);
-		__raw_writeb(have_expmask, EXPMASK_ENABLE);
-	}
-#endif
-}
-
-static int ecard_def_irq_pending(ecard_t *ec)
-{
-	return !ec->irqmask || readb(ec->irqaddr) & ec->irqmask;
-}
-
-static void ecard_def_fiq_enable(ecard_t *ec, int fiqnr)
-{
-	panic("ecard_def_fiq_enable called - impossible");
-}
-
-static void ecard_def_fiq_disable(ecard_t *ec, int fiqnr)
-{
-	panic("ecard_def_fiq_disable called - impossible");
-}
-
-static int ecard_def_fiq_pending(ecard_t *ec)
-{
-	return !ec->fiqmask || readb(ec->fiqaddr) & ec->fiqmask;
-}
-
-static expansioncard_ops_t ecard_default_ops = {
-	ecard_def_irq_enable,
-	ecard_def_irq_disable,
-	ecard_def_irq_pending,
-	ecard_def_fiq_enable,
-	ecard_def_fiq_disable,
-	ecard_def_fiq_pending
-};
-
-/*
- * Enable and disable interrupts from expansion cards.
- * (interrupts are disabled for these functions).
- *
- * They are not meant to be called directly, but via enable/disable_irq.
- */
-static void ecard_irq_unmask(struct irq_data *d)
-{
-	ecard_t *ec = slot_to_ecard(d->irq - 32);
-
-	if (ec) {
-		if (!ec->ops)
-			ec->ops = &ecard_default_ops;
-
-		if (ec->claimed && ec->ops->irqenable)
-			ec->ops->irqenable(ec, d->irq);
-		else
-			printk(KERN_ERR "ecard: rejecting request to "
-				"enable IRQs for %d\n", d->irq);
-	}
-}
-
-static void ecard_irq_mask(struct irq_data *d)
-{
-	ecard_t *ec = slot_to_ecard(d->irq - 32);
-
-	if (ec) {
-		if (!ec->ops)
-			ec->ops = &ecard_default_ops;
-
-		if (ec->ops && ec->ops->irqdisable)
-			ec->ops->irqdisable(ec, d->irq);
-	}
-}
-
-static struct irq_chip ecard_chip = {
-	.name		= "ECARD",
-	.irq_ack	= ecard_irq_mask,
-	.irq_mask	= ecard_irq_mask,
-	.irq_unmask	= ecard_irq_unmask,
-};
-
-void ecard_enablefiq(unsigned int fiqnr)
-{
-	ecard_t *ec = slot_to_ecard(fiqnr);
-
-	if (ec) {
-		if (!ec->ops)
-			ec->ops = &ecard_default_ops;
-
-		if (ec->claimed && ec->ops->fiqenable)
-			ec->ops->fiqenable(ec, fiqnr);
-		else
-			printk(KERN_ERR "ecard: rejecting request to "
-				"enable FIQs for %d\n", fiqnr);
-	}
-}
-
-void ecard_disablefiq(unsigned int fiqnr)
-{
-	ecard_t *ec = slot_to_ecard(fiqnr);
-
-	if (ec) {
-		if (!ec->ops)
-			ec->ops = &ecard_default_ops;
-
-		if (ec->ops->fiqdisable)
-			ec->ops->fiqdisable(ec, fiqnr);
-	}
-}
-
-static void ecard_dump_irq_state(void)
-{
-	ecard_t *ec;
-
-	printk("Expansion card IRQ state:\n");
-
-	for (ec = cards; ec; ec = ec->next) {
-		if (ec->slot_no == 8)
-			continue;
-
-		printk("  %d: %sclaimed, ",
-		       ec->slot_no, ec->claimed ? "" : "not ");
-
-		if (ec->ops && ec->ops->irqpending &&
-		    ec->ops != &ecard_default_ops)
-			printk("irq %spending\n",
-			       ec->ops->irqpending(ec) ? "" : "not ");
-		else
-			printk("irqaddr %p, mask = %02X, status = %02X\n",
-			       ec->irqaddr, ec->irqmask, readb(ec->irqaddr));
-	}
-}
-
-static void ecard_check_lockup(struct irq_desc *desc)
-{
-	static unsigned long last;
-	static int lockup;
-
-	/*
-	 * If the timer interrupt has not run since the last million
-	 * unrecognised expansion card interrupts, then there is
-	 * something seriously wrong.  Disable the expansion card
-	 * interrupts so at least we can continue.
-	 *
-	 * Maybe we ought to start a timer to re-enable them some time
-	 * later?
-	 */
-	if (last == jiffies) {
-		lockup += 1;
-		if (lockup > 1000000) {
-			printk(KERN_ERR "\nInterrupt lockup detected - "
-			       "disabling all expansion card interrupts\n");
-
-			desc->irq_data.chip->irq_mask(&desc->irq_data);
-			ecard_dump_irq_state();
-		}
-	} else
-		lockup = 0;
-
-	/*
-	 * If we did not recognise the source of this interrupt,
-	 * warn the user, but don't flood the user with these messages.
-	 */
-	if (!last || time_after(jiffies, last + 5*HZ)) {
-		last = jiffies;
-		printk(KERN_WARNING "Unrecognised interrupt from backplane\n");
-		ecard_dump_irq_state();
-	}
-}
-
-static void
-ecard_irq_handler(unsigned int irq, struct irq_desc *desc)
-{
-	ecard_t *ec;
-	int called = 0;
-
-	desc->irq_data.chip->irq_mask(&desc->irq_data);
-	for (ec = cards; ec; ec = ec->next) {
-		int pending;
-
-		if (!ec->claimed || ec->irq == NO_IRQ || ec->slot_no == 8)
-			continue;
-
-		if (ec->ops && ec->ops->irqpending)
-			pending = ec->ops->irqpending(ec);
-		else
-			pending = ecard_default_ops.irqpending(ec);
-
-		if (pending) {
-			generic_handle_irq(ec->irq);
-			called ++;
-		}
-	}
-	desc->irq_data.chip->irq_unmask(&desc->irq_data);
-
-	if (called == 0)
-		ecard_check_lockup(desc);
-}
-
-#ifdef HAS_EXPMASK
-static unsigned char priority_masks[] =
-{
-	0xf0, 0xf1, 0xf3, 0xf7, 0xff, 0xff, 0xff, 0xff
-};
-
-static unsigned char first_set[] =
-{
-	0x00, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00,
-	0x03, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00
-};
-
-static void
-ecard_irqexp_handler(unsigned int irq, struct irq_desc *desc)
-{
-	const unsigned int statusmask = 15;
-	unsigned int status;
-
-	status = __raw_readb(EXPMASK_STATUS) & statusmask;
-	if (status) {
-		unsigned int slot = first_set[status];
-		ecard_t *ec = slot_to_ecard(slot);
-
-		if (ec->claimed) {
-			/*
-			 * this ugly code is so that we can operate a
-			 * prioritorising system:
-			 *
-			 * Card 0 	highest priority
-			 * Card 1
-			 * Card 2
-			 * Card 3	lowest priority
-			 *
-			 * Serial cards should go in 0/1, ethernet/scsi in 2/3
-			 * otherwise you will lose serial data at high speeds!
-			 */
-			generic_handle_irq(ec->irq);
-		} else {
-			printk(KERN_WARNING "card%d: interrupt from unclaimed "
-			       "card???\n", slot);
-			have_expmask &= ~(1 << slot);
-			__raw_writeb(have_expmask, EXPMASK_ENABLE);
-		}
-	} else
-		printk(KERN_WARNING "Wild interrupt from backplane (masks)\n");
-}
-
-static int __init ecard_probeirqhw(void)
-{
-	ecard_t *ec;
-	int found;
-
-	__raw_writeb(0x00, EXPMASK_ENABLE);
-	__raw_writeb(0xff, EXPMASK_STATUS);
-	found = (__raw_readb(EXPMASK_STATUS) & 15) == 0;
-	__raw_writeb(0xff, EXPMASK_ENABLE);
-
-	if (found) {
-		printk(KERN_DEBUG "Expansion card interrupt "
-		       "management hardware found\n");
-
-		/* for each card present, set a bit to '1' */
-		have_expmask = 0x80000000;
-
-		for (ec = cards; ec; ec = ec->next)
-			have_expmask |= 1 << ec->slot_no;
-
-		__raw_writeb(have_expmask, EXPMASK_ENABLE);
-	}
-
-	return found;
-}
-#else
-#define ecard_irqexp_handler NULL
-#define ecard_probeirqhw() (0)
-#endif
-
-static void __iomem *__ecard_address(ecard_t *ec, card_type_t type, card_speed_t speed)
-{
-	void __iomem *address = NULL;
-	int slot = ec->slot_no;
-
-	if (ec->slot_no == 8)
-		return ECARD_MEMC8_BASE;
-
-	ectcr &= ~(1 << slot);
-
-	switch (type) {
-	case ECARD_MEMC:
-		if (slot < 4)
-			address = ECARD_MEMC_BASE + (slot << 14);
-		break;
-
-	case ECARD_IOC:
-		if (slot < 4)
-			address = ECARD_IOC_BASE + (slot << 14);
-		else
-			address = ECARD_IOC4_BASE + ((slot - 4) << 14);
-		if (address)
-			address += speed << 19;
-		break;
-
-	case ECARD_EASI:
-		address = ECARD_EASI_BASE + (slot << 24);
-		if (speed == ECARD_FAST)
-			ectcr |= 1 << slot;
-		break;
-
-	default:
-		break;
-	}
-
-#ifdef IOMD_ECTCR
-	iomd_writeb(ectcr, IOMD_ECTCR);
-#endif
-	return address;
-}
-
-static int ecard_prints(struct seq_file *m, ecard_t *ec)
-{
-	seq_printf(m, "  %d: %s ", ec->slot_no, ec->easi ? "EASI" : "    ");
-
-	if (ec->cid.id == 0) {
-		struct in_chunk_dir incd;
-
-		seq_printf(m, "[%04X:%04X] ",
-			ec->cid.manufacturer, ec->cid.product);
-
-		if (!ec->card_desc && ec->cid.cd &&
-		    ecard_readchunk(&incd, ec, 0xf5, 0)) {
-			ec->card_desc = kmalloc(strlen(incd.d.string)+1, GFP_KERNEL);
-
-			if (ec->card_desc)
-				strcpy((char *)ec->card_desc, incd.d.string);
-		}
-
-		seq_printf(m, "%s\n", ec->card_desc ? ec->card_desc : "*unknown*");
-	} else
-		seq_printf(m, "Simple card %d\n", ec->cid.id);
-
-	return 0;
-}
-
-static int ecard_devices_proc_show(struct seq_file *m, void *v)
-{
-	ecard_t *ec = cards;
-
-	while (ec) {
-		ecard_prints(m, ec);
-		ec = ec->next;
-	}
-	return 0;
-}
-
-static int ecard_devices_proc_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, ecard_devices_proc_show, NULL);
-}
-
-static const struct file_operations bus_ecard_proc_fops = {
-	.owner		= THIS_MODULE,
-	.open		= ecard_devices_proc_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= single_release,
-};
-
-static struct proc_dir_entry *proc_bus_ecard_dir = NULL;
-
-static void ecard_proc_init(void)
-{
-	proc_bus_ecard_dir = proc_mkdir("bus/ecard", NULL);
-	proc_create("devices", 0, proc_bus_ecard_dir, &bus_ecard_proc_fops);
-}
-
-#define ec_set_resource(ec,nr,st,sz)				\
-	do {							\
-		(ec)->resource[nr].name = dev_name(&ec->dev);	\
-		(ec)->resource[nr].start = st;			\
-		(ec)->resource[nr].end = (st) + (sz) - 1;	\
-		(ec)->resource[nr].flags = IORESOURCE_MEM;	\
-	} while (0)
-
-static void __init ecard_free_card(struct expansion_card *ec)
-{
-	int i;
-
-	for (i = 0; i < ECARD_NUM_RESOURCES; i++)
-		if (ec->resource[i].flags)
-			release_resource(&ec->resource[i]);
-
-	kfree(ec);
-}
-
-static struct expansion_card *__init ecard_alloc_card(int type, int slot)
-{
-	struct expansion_card *ec;
-	unsigned long base;
-	int i;
-
-	ec = kzalloc(sizeof(ecard_t), GFP_KERNEL);
-	if (!ec) {
-		ec = ERR_PTR(-ENOMEM);
-		goto nomem;
-	}
-
-	ec->slot_no = slot;
-	ec->easi = type == ECARD_EASI;
-	ec->irq = NO_IRQ;
-	ec->fiq = NO_IRQ;
-	ec->dma = NO_DMA;
-	ec->ops = &ecard_default_ops;
-
-	dev_set_name(&ec->dev, "ecard%d", slot);
-	ec->dev.parent = NULL;
-	ec->dev.bus = &ecard_bus_type;
-	ec->dev.dma_mask = &ec->dma_mask;
-	ec->dma_mask = (u64)0xffffffff;
-	ec->dev.coherent_dma_mask = ec->dma_mask;
-
-	if (slot < 4) {
-		ec_set_resource(ec, ECARD_RES_MEMC,
-				PODSLOT_MEMC_BASE + (slot << 14),
-				PODSLOT_MEMC_SIZE);
-		base = PODSLOT_IOC0_BASE + (slot << 14);
-	} else
-		base = PODSLOT_IOC4_BASE + ((slot - 4) << 14);
-
-#ifdef CONFIG_ARCH_RPC
-	if (slot < 8) {
-		ec_set_resource(ec, ECARD_RES_EASI,
-				PODSLOT_EASI_BASE + (slot << 24),
-				PODSLOT_EASI_SIZE);
-	}
-
-	if (slot == 8) {
-		ec_set_resource(ec, ECARD_RES_MEMC, NETSLOT_BASE, NETSLOT_SIZE);
-	} else
-#endif
-
-	for (i = 0; i <= ECARD_RES_IOCSYNC - ECARD_RES_IOCSLOW; i++)
-		ec_set_resource(ec, i + ECARD_RES_IOCSLOW,
-				base + (i << 19), PODSLOT_IOC_SIZE);
-
-	for (i = 0; i < ECARD_NUM_RESOURCES; i++) {
-		if (ec->resource[i].flags &&
-		    request_resource(&iomem_resource, &ec->resource[i])) {
-			dev_err(&ec->dev, "resource(s) not available\n");
-			ec->resource[i].end -= ec->resource[i].start;
-			ec->resource[i].start = 0;
-			ec->resource[i].flags = 0;
-		}
-	}
-
- nomem:
-	return ec;
-}
-
-static ssize_t ecard_show_irq(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	struct expansion_card *ec = ECARD_DEV(dev);
-	return sprintf(buf, "%u\n", ec->irq);
-}
-
-static ssize_t ecard_show_dma(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	struct expansion_card *ec = ECARD_DEV(dev);
-	return sprintf(buf, "%u\n", ec->dma);
-}
-
-static ssize_t ecard_show_resources(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	struct expansion_card *ec = ECARD_DEV(dev);
-	char *str = buf;
-	int i;
-
-	for (i = 0; i < ECARD_NUM_RESOURCES; i++)
-		str += sprintf(str, "%08x %08x %08lx\n",
-				ec->resource[i].start,
-				ec->resource[i].end,
-				ec->resource[i].flags);
-
-	return str - buf;
-}
-
-static ssize_t ecard_show_vendor(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	struct expansion_card *ec = ECARD_DEV(dev);
-	return sprintf(buf, "%u\n", ec->cid.manufacturer);
-}
-
-static ssize_t ecard_show_device(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	struct expansion_card *ec = ECARD_DEV(dev);
-	return sprintf(buf, "%u\n", ec->cid.product);
-}
-
-static ssize_t ecard_show_type(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	struct expansion_card *ec = ECARD_DEV(dev);
-	return sprintf(buf, "%s\n", ec->easi ? "EASI" : "IOC");
-}
-
-static struct device_attribute ecard_dev_attrs[] = {
-	__ATTR(device,   S_IRUGO, ecard_show_device,    NULL),
-	__ATTR(dma,      S_IRUGO, ecard_show_dma,       NULL),
-	__ATTR(irq,      S_IRUGO, ecard_show_irq,       NULL),
-	__ATTR(resource, S_IRUGO, ecard_show_resources, NULL),
-	__ATTR(type,     S_IRUGO, ecard_show_type,      NULL),
-	__ATTR(vendor,   S_IRUGO, ecard_show_vendor,    NULL),
-	__ATTR_NULL,
-};
-
-
-int ecard_request_resources(struct expansion_card *ec)
-{
-	int i, err = 0;
-
-	for (i = 0; i < ECARD_NUM_RESOURCES; i++) {
-		if (ecard_resource_end(ec, i) &&
-		    !request_mem_region(ecard_resource_start(ec, i),
-					ecard_resource_len(ec, i),
-					ec->dev.driver->name)) {
-			err = -EBUSY;
-			break;
-		}
-	}
-
-	if (err) {
-		while (i--)
-			if (ecard_resource_end(ec, i))
-				release_mem_region(ecard_resource_start(ec, i),
-						   ecard_resource_len(ec, i));
-	}
-	return err;
-}
-EXPORT_SYMBOL(ecard_request_resources);
-
-void ecard_release_resources(struct expansion_card *ec)
-{
-	int i;
-
-	for (i = 0; i < ECARD_NUM_RESOURCES; i++)
-		if (ecard_resource_end(ec, i))
-			release_mem_region(ecard_resource_start(ec, i),
-					   ecard_resource_len(ec, i));
-}
-EXPORT_SYMBOL(ecard_release_resources);
-
-void ecard_setirq(struct expansion_card *ec, const struct expansion_card_ops *ops, void *irq_data)
-{
-	ec->irq_data = irq_data;
-	barrier();
-	ec->ops = ops;
-}
-EXPORT_SYMBOL(ecard_setirq);
-
-void __iomem *ecardm_iomap(struct expansion_card *ec, unsigned int res,
-			   unsigned long offset, unsigned long maxsize)
-{
-	unsigned long start = ecard_resource_start(ec, res);
-	unsigned long end = ecard_resource_end(ec, res);
-
-	if (offset > (end - start))
-		return NULL;
-
-	start += offset;
-	if (maxsize && end - start > maxsize)
-		end = start + maxsize;
-	
-	return devm_ioremap(&ec->dev, start, end - start);
-}
-EXPORT_SYMBOL(ecardm_iomap);
-
-/*
- * Probe for an expansion card.
- *
- * If bit 1 of the first byte of the card is set, then the
- * card does not exist.
- */
-static int __init
-ecard_probe(int slot, card_type_t type)
-{
-	ecard_t **ecp;
-	ecard_t *ec;
-	struct ex_ecid cid;
-	void __iomem *addr;
-	int i, rc;
-
-	ec = ecard_alloc_card(type, slot);
-	if (IS_ERR(ec)) {
-		rc = PTR_ERR(ec);
-		goto nomem;
-	}
-
-	rc = -ENODEV;
-	if ((addr = __ecard_address(ec, type, ECARD_SYNC)) == NULL)
-		goto nodev;
-
-	cid.r_zero = 1;
-	ecard_readbytes(&cid, ec, 0, 16, 0);
-	if (cid.r_zero)
-		goto nodev;
-
-	ec->cid.id	= cid.r_id;
-	ec->cid.cd	= cid.r_cd;
-	ec->cid.is	= cid.r_is;
-	ec->cid.w	= cid.r_w;
-	ec->cid.manufacturer = ecard_getu16(cid.r_manu);
-	ec->cid.product = ecard_getu16(cid.r_prod);
-	ec->cid.country = cid.r_country;
-	ec->cid.irqmask = cid.r_irqmask;
-	ec->cid.irqoff  = ecard_gets24(cid.r_irqoff);
-	ec->cid.fiqmask = cid.r_fiqmask;
-	ec->cid.fiqoff  = ecard_gets24(cid.r_fiqoff);
-	ec->fiqaddr	=
-	ec->irqaddr	= addr;
-
-	if (ec->cid.is) {
-		ec->irqmask = ec->cid.irqmask;
-		ec->irqaddr += ec->cid.irqoff;
-		ec->fiqmask = ec->cid.fiqmask;
-		ec->fiqaddr += ec->cid.fiqoff;
-	} else {
-		ec->irqmask = 1;
-		ec->fiqmask = 4;
-	}
-
-	for (i = 0; i < ARRAY_SIZE(blacklist); i++)
-		if (blacklist[i].manufacturer == ec->cid.manufacturer &&
-		    blacklist[i].product == ec->cid.product) {
-			ec->card_desc = blacklist[i].type;
-			break;
-		}
-
-	/*
-	 * hook the interrupt handlers
-	 */
-	if (slot < 8) {
-		ec->irq = 32 + slot;
-		irq_set_chip_and_handler(ec->irq, &ecard_chip,
-					 handle_level_irq);
-		set_irq_flags(ec->irq, IRQF_VALID);
-	}
-
-	if (slot == 8)
-		ec->irq = 11;
-#ifdef CONFIG_ARCH_RPC
-	/* On RiscPC, only first two slots have DMA capability */
-	if (slot < 2)
-		ec->dma = 2 + slot;
-#endif
-
-	for (ecp = &cards; *ecp; ecp = &(*ecp)->next);
-
-	*ecp = ec;
-	slot_to_expcard[slot] = ec;
-
-	device_register(&ec->dev);
-
-	return 0;
-
- nodev:
-	ecard_free_card(ec);
- nomem:
-	return rc;
-}
-
-/*
- * Initialise the expansion card system.
- * Locate all hardware - interrupt management and
- * actual cards.
- */
-static int __init ecard_init(void)
-{
-	struct task_struct *task;
-	int slot, irqhw;
-
-	task = kthread_run(ecard_task, NULL, "kecardd");
-	if (IS_ERR(task)) {
-		printk(KERN_ERR "Ecard: unable to create kernel thread: %ld\n",
-		       PTR_ERR(task));
-		return PTR_ERR(task);
-	}
-
-	printk("Probing expansion cards\n");
-
-	for (slot = 0; slot < 8; slot ++) {
-		if (ecard_probe(slot, ECARD_EASI) == -ENODEV)
-			ecard_probe(slot, ECARD_IOC);
-	}
-
-	ecard_probe(8, ECARD_IOC);
-
-	irqhw = ecard_probeirqhw();
-
-	irq_set_chained_handler(IRQ_EXPANSIONCARD,
-				irqhw ? ecard_irqexp_handler : ecard_irq_handler);
-
-	ecard_proc_init();
-
-	return 0;
-}
-
-subsys_initcall(ecard_init);
-
-/*
- *	ECARD "bus"
- */
-static const struct ecard_id *
-ecard_match_device(const struct ecard_id *ids, struct expansion_card *ec)
-{
-	int i;
-
-	for (i = 0; ids[i].manufacturer != 65535; i++)
-		if (ec->cid.manufacturer == ids[i].manufacturer &&
-		    ec->cid.product == ids[i].product)
-			return ids + i;
-
-	return NULL;
-}
-
-static int ecard_drv_probe(struct device *dev)
-{
-	struct expansion_card *ec = ECARD_DEV(dev);
-	struct ecard_driver *drv = ECARD_DRV(dev->driver);
-	const struct ecard_id *id;
-	int ret;
-
-	id = ecard_match_device(drv->id_table, ec);
-
-	ec->claimed = 1;
-	ret = drv->probe(ec, id);
-	if (ret)
-		ec->claimed = 0;
-	return ret;
-}
-
-static int ecard_drv_remove(struct device *dev)
-{
-	struct expansion_card *ec = ECARD_DEV(dev);
-	struct ecard_driver *drv = ECARD_DRV(dev->driver);
-
-	drv->remove(ec);
-	ec->claimed = 0;
-
-	/*
-	 * Restore the default operations.  We ensure that the
-	 * ops are set before we change the data.
-	 */
-	ec->ops = &ecard_default_ops;
-	barrier();
-	ec->irq_data = NULL;
-
-	return 0;
-}
-
-/*
- * Before rebooting, we must make sure that the expansion card is in a
- * sensible state, so it can be re-detected.  This means that the first
- * page of the ROM must be visible.  We call the expansion cards reset
- * handler, if any.
- */
-static void ecard_drv_shutdown(struct device *dev)
-{
-	struct expansion_card *ec = ECARD_DEV(dev);
-	struct ecard_driver *drv = ECARD_DRV(dev->driver);
-	struct ecard_request req;
-
-	if (dev->driver) {
-		if (drv->shutdown)
-			drv->shutdown(ec);
-		ec->claimed = 0;
-	}
-
-	/*
-	 * If this card has a loader, call the reset handler.
-	 */
-	if (ec->loader) {
-		req.fn = ecard_task_reset;
-		req.ec = ec;
-		ecard_call(&req);
-	}
-}
-
-int ecard_register_driver(struct ecard_driver *drv)
-{
-	drv->drv.bus = &ecard_bus_type;
-
-	return driver_register(&drv->drv);
-}
-
-void ecard_remove_driver(struct ecard_driver *drv)
-{
-	driver_unregister(&drv->drv);
-}
-
-static int ecard_match(struct device *_dev, struct device_driver *_drv)
-{
-	struct expansion_card *ec = ECARD_DEV(_dev);
-	struct ecard_driver *drv = ECARD_DRV(_drv);
-	int ret;
-
-	if (drv->id_table) {
-		ret = ecard_match_device(drv->id_table, ec) != NULL;
-	} else {
-		ret = ec->cid.id == drv->id;
-	}
-
-	return ret;
-}
-
-struct bus_type ecard_bus_type = {
-	.name		= "ecard",
-	.dev_attrs	= ecard_dev_attrs,
-	.match		= ecard_match,
-	.probe		= ecard_drv_probe,
-	.remove		= ecard_drv_remove,
-	.shutdown	= ecard_drv_shutdown,
-};
-
-static int ecard_bus_init(void)
-{
-	return bus_register(&ecard_bus_type);
-}
-
-postcore_initcall(ecard_bus_init);
-
-EXPORT_SYMBOL(ecard_readchunk);
-EXPORT_SYMBOL(ecard_register_driver);
-EXPORT_SYMBOL(ecard_remove_driver);
-EXPORT_SYMBOL(ecard_bus_type);
diff --git a/arch/arm/kernel/ecard.h b/arch/arm/kernel/ecard.h
deleted file mode 100644
index 4642d436be2..00000000000
--- a/arch/arm/kernel/ecard.h
+++ /dev/null
@@ -1,69 +0,0 @@
-/*
- *  ecard.h
- *
- *  Copyright 2007 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-/* Definitions internal to ecard.c - for it's use only!!
- *
- * External expansion card header as read from the card
- */
-struct ex_ecid {
-	unsigned char	r_irq:1;
-	unsigned char	r_zero:1;
-	unsigned char	r_fiq:1;
-	unsigned char	r_id:4;
-	unsigned char	r_a:1;
-
-	unsigned char	r_cd:1;
-	unsigned char	r_is:1;
-	unsigned char	r_w:2;
-	unsigned char	r_r1:4;
-
-	unsigned char	r_r2:8;
-
-	unsigned char	r_prod[2];
-
-	unsigned char	r_manu[2];
-
-	unsigned char	r_country;
-
-	unsigned char	r_fiqmask;
-	unsigned char	r_fiqoff[3];
-
-	unsigned char	r_irqmask;
-	unsigned char	r_irqoff[3];
-};
-
-/*
- * Chunk directory entry as read from the card
- */
-struct ex_chunk_dir {
-	unsigned char r_id;
-	unsigned char r_len[3];
-	unsigned long r_start;
-	union {
-		char string[256];
-		char data[1];
-	} d;
-#define c_id(x)		((x)->r_id)
-#define c_len(x)	((x)->r_len[0]|((x)->r_len[1]<<8)|((x)->r_len[2]<<16))
-#define c_start(x)	((x)->r_start)
-};
-
-typedef enum ecard_type {		/* Cards address space		*/
-	ECARD_IOC,
-	ECARD_MEMC,
-	ECARD_EASI
-} card_type_t;
-
-typedef enum {				/* Speed for ECARD_IOC space	*/
-	ECARD_SLOW	 = 0,
-	ECARD_MEDIUM	 = 1,
-	ECARD_FAST	 = 2,
-	ECARD_SYNC	 = 3
-} card_speed_t;
diff --git a/arch/arm/kernel/elf.c b/arch/arm/kernel/elf.c
index ddba41d1fcf..d0d1e83150c 100644
--- a/arch/arm/kernel/elf.c
+++ b/arch/arm/kernel/elf.c
@@ -3,6 +3,7 @@
 #include <linux/personality.h>
 #include <linux/binfmts.h>
 #include <linux/elf.h>
+#include <asm/system_info.h>
 
 int elf_check_arch(const struct elf32_hdr *x)
 {
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index be16a48007b..7fd3ad048da 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -15,16 +15,19 @@
  *  that causes it to save wrong values...  Be aware!
  */
 
+#include <asm/assembler.h>
 #include <asm/memory.h>
 #include <asm/glue-df.h>
 #include <asm/glue-pf.h>
 #include <asm/vfpmacros.h>
+#ifndef CONFIG_MULTI_IRQ_HANDLER
 #include <mach/entry-macro.S>
+#endif
 #include <asm/thread_notify.h>
 #include <asm/unwind.h>
 #include <asm/unistd.h>
 #include <asm/tls.h>
-#include <asm/system.h>
+#include <asm/system_info.h>
 
 #include "entry-header.S"
 #include <asm/entry-macro-multi.S>
@@ -1101,7 +1104,6 @@ __stubs_start:
  * get out of that mode without clobbering one register.
  */
 vector_fiq:
-	disable_fiq
 	subs	pc, lr, #4
 
 /*=============================================================================
diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S
index 9fd0ba90c1d..54ee265dd81 100644
--- a/arch/arm/kernel/entry-common.S
+++ b/arch/arm/kernel/entry-common.S
@@ -10,9 +10,15 @@
 
 #include <asm/unistd.h>
 #include <asm/ftrace.h>
-#include <mach/entry-macro.S>
 #include <asm/unwind.h>
 
+#ifdef CONFIG_NEED_RET_TO_USER
+#include <mach/entry-macro.S>
+#else
+	.macro  arch_ret_to_user, tmp1, tmp2
+	.endm
+#endif
+
 #include "entry-header.S"
 
 
diff --git a/arch/arm/kernel/fiq.c b/arch/arm/kernel/fiq.c
index 4c164ece589..c32f8456aa0 100644
--- a/arch/arm/kernel/fiq.c
+++ b/arch/arm/kernel/fiq.c
@@ -42,9 +42,9 @@
 #include <linux/seq_file.h>
 
 #include <asm/cacheflush.h>
+#include <asm/cp15.h>
 #include <asm/fiq.h>
 #include <asm/irq.h>
-#include <asm/system.h>
 #include <asm/traps.h>
 
 static unsigned long no_fiq_insn;
diff --git a/arch/arm/kernel/ftrace.c b/arch/arm/kernel/ftrace.c
index c0062ad1e84..df0bf0c8cb7 100644
--- a/arch/arm/kernel/ftrace.c
+++ b/arch/arm/kernel/ftrace.c
@@ -16,10 +16,13 @@
 #include <linux/uaccess.h>
 
 #include <asm/cacheflush.h>
+#include <asm/opcodes.h>
 #include <asm/ftrace.h>
 
+#include "insn.h"
+
 #ifdef CONFIG_THUMB2_KERNEL
-#define	NOP		0xeb04f85d	/* pop.w {lr} */
+#define	NOP		0xf85deb04	/* pop.w {lr} */
 #else
 #define	NOP		0xe8bd4000	/* pop {lr} */
 #endif
@@ -60,76 +63,31 @@ static unsigned long adjust_address(struct dyn_ftrace *rec, unsigned long addr)
 }
 #endif
 
-#ifdef CONFIG_THUMB2_KERNEL
-static unsigned long ftrace_gen_branch(unsigned long pc, unsigned long addr,
-				       bool link)
-{
-	unsigned long s, j1, j2, i1, i2, imm10, imm11;
-	unsigned long first, second;
-	long offset;
-
-	offset = (long)addr - (long)(pc + 4);
-	if (offset < -16777216 || offset > 16777214) {
-		WARN_ON_ONCE(1);
-		return 0;
-	}
-
-	s	= (offset >> 24) & 0x1;
-	i1	= (offset >> 23) & 0x1;
-	i2	= (offset >> 22) & 0x1;
-	imm10	= (offset >> 12) & 0x3ff;
-	imm11	= (offset >>  1) & 0x7ff;
-
-	j1 = (!i1) ^ s;
-	j2 = (!i2) ^ s;
-
-	first = 0xf000 | (s << 10) | imm10;
-	second = 0x9000 | (j1 << 13) | (j2 << 11) | imm11;
-	if (link)
-		second |= 1 << 14;
-
-	return (second << 16) | first;
-}
-#else
-static unsigned long ftrace_gen_branch(unsigned long pc, unsigned long addr,
-				       bool link)
-{
-	unsigned long opcode = 0xea000000;
-	long offset;
-
-	if (link)
-		opcode |= 1 << 24;
-
-	offset = (long)addr - (long)(pc + 8);
-	if (unlikely(offset < -33554432 || offset > 33554428)) {
-		/* Can't generate branches that far (from ARM ARM). Ftrace
-		 * doesn't generate branches outside of kernel text.
-		 */
-		WARN_ON_ONCE(1);
-		return 0;
-	}
-
-	offset = (offset >> 2) & 0x00ffffff;
-
-	return opcode | offset;
-}
-#endif
-
 static unsigned long ftrace_call_replace(unsigned long pc, unsigned long addr)
 {
-	return ftrace_gen_branch(pc, addr, true);
+	return arm_gen_branch_link(pc, addr);
 }
 
 static int ftrace_modify_code(unsigned long pc, unsigned long old,
-			      unsigned long new)
+			      unsigned long new, bool validate)
 {
 	unsigned long replaced;
 
-	if (probe_kernel_read(&replaced, (void *)pc, MCOUNT_INSN_SIZE))
-		return -EFAULT;
+	if (IS_ENABLED(CONFIG_THUMB2_KERNEL)) {
+		old = __opcode_to_mem_thumb32(old);
+		new = __opcode_to_mem_thumb32(new);
+	} else {
+		old = __opcode_to_mem_arm(old);
+		new = __opcode_to_mem_arm(new);
+	}
 
-	if (replaced != old)
-		return -EINVAL;
+	if (validate) {
+		if (probe_kernel_read(&replaced, (void *)pc, MCOUNT_INSN_SIZE))
+			return -EFAULT;
+
+		if (replaced != old)
+			return -EINVAL;
+	}
 
 	if (probe_kernel_write((void *)pc, &new, MCOUNT_INSN_SIZE))
 		return -EPERM;
@@ -141,23 +99,21 @@ static int ftrace_modify_code(unsigned long pc, unsigned long old,
 
 int ftrace_update_ftrace_func(ftrace_func_t func)
 {
-	unsigned long pc, old;
+	unsigned long pc;
 	unsigned long new;
 	int ret;
 
 	pc = (unsigned long)&ftrace_call;
-	memcpy(&old, &ftrace_call, MCOUNT_INSN_SIZE);
 	new = ftrace_call_replace(pc, (unsigned long)func);
 
-	ret = ftrace_modify_code(pc, old, new);
+	ret = ftrace_modify_code(pc, 0, new, false);
 
 #ifdef CONFIG_OLD_MCOUNT
 	if (!ret) {
 		pc = (unsigned long)&ftrace_call_old;
-		memcpy(&old, &ftrace_call_old, MCOUNT_INSN_SIZE);
 		new = ftrace_call_replace(pc, (unsigned long)func);
 
-		ret = ftrace_modify_code(pc, old, new);
+		ret = ftrace_modify_code(pc, 0, new, false);
 	}
 #endif
 
@@ -172,7 +128,7 @@ int ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr)
 	old = ftrace_nop_replace(rec);
 	new = ftrace_call_replace(ip, adjust_address(rec, addr));
 
-	return ftrace_modify_code(rec->ip, old, new);
+	return ftrace_modify_code(rec->ip, old, new, true);
 }
 
 int ftrace_make_nop(struct module *mod,
@@ -185,7 +141,7 @@ int ftrace_make_nop(struct module *mod,
 
 	old = ftrace_call_replace(ip, adjust_address(rec, addr));
 	new = ftrace_nop_replace(rec);
-	ret = ftrace_modify_code(ip, old, new);
+	ret = ftrace_modify_code(ip, old, new, true);
 
 #ifdef CONFIG_OLD_MCOUNT
 	if (ret == -EINVAL && addr == MCOUNT_ADDR) {
@@ -193,7 +149,7 @@ int ftrace_make_nop(struct module *mod,
 
 		old = ftrace_call_replace(ip, adjust_address(rec, addr));
 		new = ftrace_nop_replace(rec);
-		ret = ftrace_modify_code(ip, old, new);
+		ret = ftrace_modify_code(ip, old, new, true);
 	}
 #endif
 
@@ -249,12 +205,12 @@ static int __ftrace_modify_caller(unsigned long *callsite,
 {
 	unsigned long caller_fn = (unsigned long) func;
 	unsigned long pc = (unsigned long) callsite;
-	unsigned long branch = ftrace_gen_branch(pc, caller_fn, false);
+	unsigned long branch = arm_gen_branch(pc, caller_fn);
 	unsigned long nop = 0xe1a00000;	/* mov r0, r0 */
 	unsigned long old = enable ? nop : branch;
 	unsigned long new = enable ? branch : nop;
 
-	return ftrace_modify_code(pc, old, new);
+	return ftrace_modify_code(pc, old, new, true);
 }
 
 static int ftrace_modify_graph_caller(bool enable)
diff --git a/arch/arm/kernel/head-nommu.S b/arch/arm/kernel/head-nommu.S
index d46f25968be..278cfc144f4 100644
--- a/arch/arm/kernel/head-nommu.S
+++ b/arch/arm/kernel/head-nommu.S
@@ -17,8 +17,8 @@
 #include <asm/assembler.h>
 #include <asm/ptrace.h>
 #include <asm/asm-offsets.h>
+#include <asm/cp15.h>
 #include <asm/thread_info.h>
-#include <asm/system.h>
 
 /*
  * Kernel startup entry point.
diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
index 6d579114406..3bf0c7f8b04 100644
--- a/arch/arm/kernel/head.S
+++ b/arch/arm/kernel/head.S
@@ -15,12 +15,12 @@
 #include <linux/init.h>
 
 #include <asm/assembler.h>
+#include <asm/cp15.h>
 #include <asm/domain.h>
 #include <asm/ptrace.h>
 #include <asm/asm-offsets.h>
 #include <asm/memory.h>
 #include <asm/thread_info.h>
-#include <asm/system.h>
 #include <asm/pgtable.h>
 
 #ifdef CONFIG_DEBUG_LL
@@ -265,7 +265,7 @@ __create_page_tables:
 	str	r6, [r3]
 
 #ifdef CONFIG_DEBUG_LL
-#ifndef CONFIG_DEBUG_ICEDCC
+#if !defined(CONFIG_DEBUG_ICEDCC) && !defined(CONFIG_DEBUG_SEMIHOSTING)
 	/*
 	 * Map in IO space for serial debugging.
 	 * This allows debug messages to be output
@@ -297,10 +297,10 @@ __create_page_tables:
 	cmp	r0, r6
 	blo	1b
 
-#else /* CONFIG_DEBUG_ICEDCC */
-	/* we don't need any serial debugging mappings for ICEDCC */
+#else /* CONFIG_DEBUG_ICEDCC || CONFIG_DEBUG_SEMIHOSTING */
+	/* we don't need any serial debugging mappings */
 	ldr	r7, [r10, #PROCINFO_IO_MMUFLAGS] @ io_mmuflags
-#endif /* !CONFIG_DEBUG_ICEDCC */
+#endif
 
 #if defined(CONFIG_ARCH_NETWINDER) || defined(CONFIG_ARCH_CATS)
 	/*
diff --git a/arch/arm/kernel/hw_breakpoint.c b/arch/arm/kernel/hw_breakpoint.c
index d6a95ef9131..ba386bd9410 100644
--- a/arch/arm/kernel/hw_breakpoint.c
+++ b/arch/arm/kernel/hw_breakpoint.c
@@ -34,7 +34,6 @@
 #include <asm/current.h>
 #include <asm/hw_breakpoint.h>
 #include <asm/kdebug.h>
-#include <asm/system.h>
 #include <asm/traps.h>
 
 /* Breakpoint currently in use for each BRP. */
diff --git a/arch/arm/kernel/insn.c b/arch/arm/kernel/insn.c
new file mode 100644
index 00000000000..ab312e51654
--- /dev/null
+++ b/arch/arm/kernel/insn.c
@@ -0,0 +1,61 @@
+#include <linux/kernel.h>
+#include <asm/opcodes.h>
+
+static unsigned long
+__arm_gen_branch_thumb2(unsigned long pc, unsigned long addr, bool link)
+{
+	unsigned long s, j1, j2, i1, i2, imm10, imm11;
+	unsigned long first, second;
+	long offset;
+
+	offset = (long)addr - (long)(pc + 4);
+	if (offset < -16777216 || offset > 16777214) {
+		WARN_ON_ONCE(1);
+		return 0;
+	}
+
+	s	= (offset >> 24) & 0x1;
+	i1	= (offset >> 23) & 0x1;
+	i2	= (offset >> 22) & 0x1;
+	imm10	= (offset >> 12) & 0x3ff;
+	imm11	= (offset >>  1) & 0x7ff;
+
+	j1 = (!i1) ^ s;
+	j2 = (!i2) ^ s;
+
+	first = 0xf000 | (s << 10) | imm10;
+	second = 0x9000 | (j1 << 13) | (j2 << 11) | imm11;
+	if (link)
+		second |= 1 << 14;
+
+	return __opcode_thumb32_compose(first, second);
+}
+
+static unsigned long
+__arm_gen_branch_arm(unsigned long pc, unsigned long addr, bool link)
+{
+	unsigned long opcode = 0xea000000;
+	long offset;
+
+	if (link)
+		opcode |= 1 << 24;
+
+	offset = (long)addr - (long)(pc + 8);
+	if (unlikely(offset < -33554432 || offset > 33554428)) {
+		WARN_ON_ONCE(1);
+		return 0;
+	}
+
+	offset = (offset >> 2) & 0x00ffffff;
+
+	return opcode | offset;
+}
+
+unsigned long
+__arm_gen_branch(unsigned long pc, unsigned long addr, bool link)
+{
+	if (IS_ENABLED(CONFIG_THUMB2_KERNEL))
+		return __arm_gen_branch_thumb2(pc, addr, link);
+	else
+		return __arm_gen_branch_arm(pc, addr, link);
+}
diff --git a/arch/arm/kernel/insn.h b/arch/arm/kernel/insn.h
new file mode 100644
index 00000000000..e96065da4da
--- /dev/null
+++ b/arch/arm/kernel/insn.h
@@ -0,0 +1,29 @@
+#ifndef __ASM_ARM_INSN_H
+#define __ASM_ARM_INSN_H
+
+static inline unsigned long
+arm_gen_nop(void)
+{
+#ifdef CONFIG_THUMB2_KERNEL
+	return 0xf3af8000; /* nop.w */
+#else
+	return 0xe1a00000; /* mov r0, r0 */
+#endif
+}
+
+unsigned long
+__arm_gen_branch(unsigned long pc, unsigned long addr, bool link);
+
+static inline unsigned long
+arm_gen_branch(unsigned long pc, unsigned long addr)
+{
+	return __arm_gen_branch(pc, addr, false);
+}
+
+static inline unsigned long
+arm_gen_branch_link(unsigned long pc, unsigned long addr)
+{
+	return __arm_gen_branch(pc, addr, true);
+}
+
+#endif
diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c
index 3efd82cc95f..71ccdbfed66 100644
--- a/arch/arm/kernel/irq.c
+++ b/arch/arm/kernel/irq.c
@@ -36,7 +36,6 @@
 #include <linux/proc_fs.h>
 
 #include <asm/exception.h>
-#include <asm/system.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/irq.h>
 #include <asm/mach/time.h>
@@ -181,10 +180,7 @@ void migrate_irqs(void)
 	local_irq_save(flags);
 
 	for_each_irq_desc(i, desc) {
-		bool affinity_broken = false;
-
-		if (!desc)
-			continue;
+		bool affinity_broken;
 
 		raw_spin_lock(&desc->lock);
 		affinity_broken = migrate_one_irq(desc);
diff --git a/arch/arm/kernel/jump_label.c b/arch/arm/kernel/jump_label.c
new file mode 100644
index 00000000000..4ce4f789446
--- /dev/null
+++ b/arch/arm/kernel/jump_label.c
@@ -0,0 +1,39 @@
+#include <linux/kernel.h>
+#include <linux/jump_label.h>
+
+#include "insn.h"
+#include "patch.h"
+
+#ifdef HAVE_JUMP_LABEL
+
+static void __arch_jump_label_transform(struct jump_entry *entry,
+					enum jump_label_type type,
+					bool is_static)
+{
+	void *addr = (void *)entry->code;
+	unsigned int insn;
+
+	if (type == JUMP_LABEL_ENABLE)
+		insn = arm_gen_branch(entry->code, entry->target);
+	else
+		insn = arm_gen_nop();
+
+	if (is_static)
+		__patch_text(addr, insn);
+	else
+		patch_text(addr, insn);
+}
+
+void arch_jump_label_transform(struct jump_entry *entry,
+			       enum jump_label_type type)
+{
+	__arch_jump_label_transform(entry, type, false);
+}
+
+void arch_jump_label_transform_static(struct jump_entry *entry,
+				      enum jump_label_type type)
+{
+	__arch_jump_label_transform(entry, type, true);
+}
+
+#endif
diff --git a/arch/arm/kernel/kprobes-common.c b/arch/arm/kernel/kprobes-common.c
index a5394fb4e4e..18a76282970 100644
--- a/arch/arm/kernel/kprobes-common.c
+++ b/arch/arm/kernel/kprobes-common.c
@@ -13,6 +13,7 @@
 
 #include <linux/kernel.h>
 #include <linux/kprobes.h>
+#include <asm/system_info.h>
 
 #include "kprobes.h"
 
diff --git a/arch/arm/kernel/kprobes.c b/arch/arm/kernel/kprobes.c
index 129c1163248..ab1869dac97 100644
--- a/arch/arm/kernel/kprobes.c
+++ b/arch/arm/kernel/kprobes.c
@@ -29,6 +29,7 @@
 #include <asm/cacheflush.h>
 
 #include "kprobes.h"
+#include "patch.h"
 
 #define MIN_STACK_SIZE(addr) 				\
 	min((unsigned long)MAX_STACK_SIZE,		\
@@ -103,57 +104,33 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p)
 	return 0;
 }
 
-#ifdef CONFIG_THUMB2_KERNEL
-
-/*
- * For a 32-bit Thumb breakpoint spanning two memory words we need to take
- * special precautions to insert the breakpoint atomically, especially on SMP
- * systems. This is achieved by calling this arming function using stop_machine.
- */
-static int __kprobes set_t32_breakpoint(void *addr)
-{
-	((u16 *)addr)[0] = KPROBE_THUMB32_BREAKPOINT_INSTRUCTION >> 16;
-	((u16 *)addr)[1] = KPROBE_THUMB32_BREAKPOINT_INSTRUCTION & 0xffff;
-	flush_insns(addr, 2*sizeof(u16));
-	return 0;
-}
-
 void __kprobes arch_arm_kprobe(struct kprobe *p)
 {
-	uintptr_t addr = (uintptr_t)p->addr & ~1; /* Remove any Thumb flag */
-
-	if (!is_wide_instruction(p->opcode)) {
-		*(u16 *)addr = KPROBE_THUMB16_BREAKPOINT_INSTRUCTION;
-		flush_insns(addr, sizeof(u16));
-	} else if (addr & 2) {
-		/* A 32-bit instruction spanning two words needs special care */
-		stop_machine(set_t32_breakpoint, (void *)addr, &cpu_online_map);
+	unsigned int brkp;
+	void *addr;
+
+	if (IS_ENABLED(CONFIG_THUMB2_KERNEL)) {
+		/* Remove any Thumb flag */
+		addr = (void *)((uintptr_t)p->addr & ~1);
+
+		if (is_wide_instruction(p->opcode))
+			brkp = KPROBE_THUMB32_BREAKPOINT_INSTRUCTION;
+		else
+			brkp = KPROBE_THUMB16_BREAKPOINT_INSTRUCTION;
 	} else {
-		/* Word aligned 32-bit instruction can be written atomically */
-		u32 bkp = KPROBE_THUMB32_BREAKPOINT_INSTRUCTION;
-#ifndef __ARMEB__ /* Swap halfwords for little-endian */
-		bkp = (bkp >> 16) | (bkp << 16);
-#endif
-		*(u32 *)addr = bkp;
-		flush_insns(addr, sizeof(u32));
-	}
-}
+		kprobe_opcode_t insn = p->opcode;
 
-#else /* !CONFIG_THUMB2_KERNEL */
+		addr = p->addr;
+		brkp = KPROBE_ARM_BREAKPOINT_INSTRUCTION;
 
-void __kprobes arch_arm_kprobe(struct kprobe *p)
-{
-	kprobe_opcode_t insn = p->opcode;
-	kprobe_opcode_t brkp = KPROBE_ARM_BREAKPOINT_INSTRUCTION;
-	if (insn >= 0xe0000000)
-		brkp |= 0xe0000000;  /* Unconditional instruction */
-	else
-		brkp |= insn & 0xf0000000;  /* Copy condition from insn */
-	*p->addr = brkp;
-	flush_insns(p->addr, sizeof(p->addr[0]));
-}
+		if (insn >= 0xe0000000)
+			brkp |= 0xe0000000;  /* Unconditional instruction */
+		else
+			brkp |= insn & 0xf0000000;  /* Copy condition from insn */
+	}
 
-#endif /* !CONFIG_THUMB2_KERNEL */
+	patch_text(addr, brkp);
+}
 
 /*
  * The actual disarming is done here on each CPU and synchronized using
@@ -166,25 +143,10 @@ void __kprobes arch_arm_kprobe(struct kprobe *p)
 int __kprobes __arch_disarm_kprobe(void *p)
 {
 	struct kprobe *kp = p;
-#ifdef CONFIG_THUMB2_KERNEL
-	u16 *addr = (u16 *)((uintptr_t)kp->addr & ~1);
-	kprobe_opcode_t insn = kp->opcode;
-	unsigned int len;
+	void *addr = (void *)((uintptr_t)kp->addr & ~1);
 
-	if (is_wide_instruction(insn)) {
-		((u16 *)addr)[0] = insn>>16;
-		((u16 *)addr)[1] = insn;
-		len = 2*sizeof(u16);
-	} else {
-		((u16 *)addr)[0] = insn;
-		len = sizeof(u16);
-	}
-	flush_insns(addr, len);
+	__patch_text(addr, kp->opcode);
 
-#else /* !CONFIG_THUMB2_KERNEL */
-	*kp->addr = kp->opcode;
-	flush_insns(kp->addr, sizeof(kp->addr[0]));
-#endif
 	return 0;
 }
 
diff --git a/arch/arm/kernel/machine_kexec.c b/arch/arm/kernel/machine_kexec.c
index 764bd456d84..dfcdb9f7c12 100644
--- a/arch/arm/kernel/machine_kexec.c
+++ b/arch/arm/kernel/machine_kexec.c
@@ -7,12 +7,13 @@
 #include <linux/delay.h>
 #include <linux/reboot.h>
 #include <linux/io.h>
+#include <linux/irq.h>
 #include <asm/pgtable.h>
 #include <asm/pgalloc.h>
 #include <asm/mmu_context.h>
 #include <asm/cacheflush.h>
 #include <asm/mach-types.h>
-#include <asm/system.h>
+#include <asm/system_misc.h>
 
 extern const unsigned char relocate_new_kernel[];
 extern const unsigned int relocate_new_kernel_size;
@@ -53,6 +54,29 @@ void machine_crash_nonpanic_core(void *unused)
 		cpu_relax();
 }
 
+static void machine_kexec_mask_interrupts(void)
+{
+	unsigned int i;
+	struct irq_desc *desc;
+
+	for_each_irq_desc(i, desc) {
+		struct irq_chip *chip;
+
+		chip = irq_desc_get_chip(desc);
+		if (!chip)
+			continue;
+
+		if (chip->irq_eoi && irqd_irq_inprogress(&desc->irq_data))
+			chip->irq_eoi(&desc->irq_data);
+
+		if (chip->irq_mask)
+			chip->irq_mask(&desc->irq_data);
+
+		if (chip->irq_disable && !irqd_irq_disabled(&desc->irq_data))
+			chip->irq_disable(&desc->irq_data);
+	}
+}
+
 void machine_crash_shutdown(struct pt_regs *regs)
 {
 	unsigned long msecs;
@@ -70,6 +94,7 @@ void machine_crash_shutdown(struct pt_regs *regs)
 		printk(KERN_WARNING "Non-crashing CPUs did not react to IPI\n");
 
 	crash_save_cpu(regs, smp_processor_id());
+	machine_kexec_mask_interrupts();
 
 	printk(KERN_INFO "Loading crashdump kernel...\n");
 }
diff --git a/arch/arm/kernel/patch.c b/arch/arm/kernel/patch.c
new file mode 100644
index 00000000000..07314af4773
--- /dev/null
+++ b/arch/arm/kernel/patch.c
@@ -0,0 +1,75 @@
+#include <linux/kernel.h>
+#include <linux/kprobes.h>
+#include <linux/stop_machine.h>
+
+#include <asm/cacheflush.h>
+#include <asm/smp_plat.h>
+#include <asm/opcodes.h>
+
+#include "patch.h"
+
+struct patch {
+	void *addr;
+	unsigned int insn;
+};
+
+void __kprobes __patch_text(void *addr, unsigned int insn)
+{
+	bool thumb2 = IS_ENABLED(CONFIG_THUMB2_KERNEL);
+	int size;
+
+	if (thumb2 && __opcode_is_thumb16(insn)) {
+		*(u16 *)addr = __opcode_to_mem_thumb16(insn);
+		size = sizeof(u16);
+	} else if (thumb2 && ((uintptr_t)addr & 2)) {
+		u16 first = __opcode_thumb32_first(insn);
+		u16 second = __opcode_thumb32_second(insn);
+		u16 *addrh = addr;
+
+		addrh[0] = __opcode_to_mem_thumb16(first);
+		addrh[1] = __opcode_to_mem_thumb16(second);
+
+		size = sizeof(u32);
+	} else {
+		if (thumb2)
+			insn = __opcode_to_mem_thumb32(insn);
+		else
+			insn = __opcode_to_mem_arm(insn);
+
+		*(u32 *)addr = insn;
+		size = sizeof(u32);
+	}
+
+	flush_icache_range((uintptr_t)(addr),
+			   (uintptr_t)(addr) + size);
+}
+
+static int __kprobes patch_text_stop_machine(void *data)
+{
+	struct patch *patch = data;
+
+	__patch_text(patch->addr, patch->insn);
+
+	return 0;
+}
+
+void __kprobes patch_text(void *addr, unsigned int insn)
+{
+	struct patch patch = {
+		.addr = addr,
+		.insn = insn,
+	};
+
+	if (cache_ops_need_broadcast()) {
+		stop_machine(patch_text_stop_machine, &patch, cpu_online_mask);
+	} else {
+		bool straddles_word = IS_ENABLED(CONFIG_THUMB2_KERNEL)
+				      && __opcode_is_thumb32(insn)
+				      && ((uintptr_t)addr & 2);
+
+		if (straddles_word)
+			stop_machine(patch_text_stop_machine, &patch, NULL);
+		else
+			__patch_text(addr, insn);
+	}
+}
diff --git a/arch/arm/kernel/patch.h b/arch/arm/kernel/patch.h
new file mode 100644
index 00000000000..b4731f2dac3
--- /dev/null
+++ b/arch/arm/kernel/patch.h
@@ -0,0 +1,7 @@
+#ifndef _ARM_KERNEL_PATCH_H
+#define _ARM_KERNEL_PATCH_H
+
+void patch_text(void *addr, unsigned int insn);
+void __patch_text(void *addr, unsigned int insn);
+
+#endif
diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c
index b2abfa18f13..186c8cb982c 100644
--- a/arch/arm/kernel/perf_event.c
+++ b/arch/arm/kernel/perf_event.c
@@ -539,6 +539,10 @@ static int armpmu_event_init(struct perf_event *event)
 	int err = 0;
 	atomic_t *active_events = &armpmu->active_events;
 
+	/* does not support taken branch sampling */
+	if (has_branch_stack(event))
+		return -EOPNOTSUPP;
+
 	if (armpmu->map_event(event) == -ENOENT)
 		return -ENOENT;
 
@@ -734,6 +738,9 @@ init_hw_perf_events(void)
 		case 0xC0F0:	/* Cortex-A15 */
 			cpu_pmu = armv7_a15_pmu_init();
 			break;
+		case 0xC070:	/* Cortex-A7 */
+			cpu_pmu = armv7_a7_pmu_init();
+			break;
 		}
 	/* Intel CPUs [xscale]. */
 	} else if (0x69 == implementor) {
diff --git a/arch/arm/kernel/perf_event_v7.c b/arch/arm/kernel/perf_event_v7.c
index 4d7095af2ab..00755d82e2f 100644
--- a/arch/arm/kernel/perf_event_v7.c
+++ b/arch/arm/kernel/perf_event_v7.c
@@ -610,6 +610,130 @@ static const unsigned armv7_a15_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
 };
 
 /*
+ * Cortex-A7 HW events mapping
+ */
+static const unsigned armv7_a7_perf_map[PERF_COUNT_HW_MAX] = {
+	[PERF_COUNT_HW_CPU_CYCLES]		= ARMV7_PERFCTR_CPU_CYCLES,
+	[PERF_COUNT_HW_INSTRUCTIONS]		= ARMV7_PERFCTR_INSTR_EXECUTED,
+	[PERF_COUNT_HW_CACHE_REFERENCES]	= ARMV7_PERFCTR_L1_DCACHE_ACCESS,
+	[PERF_COUNT_HW_CACHE_MISSES]		= ARMV7_PERFCTR_L1_DCACHE_REFILL,
+	[PERF_COUNT_HW_BRANCH_INSTRUCTIONS]	= ARMV7_PERFCTR_PC_WRITE,
+	[PERF_COUNT_HW_BRANCH_MISSES]		= ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
+	[PERF_COUNT_HW_BUS_CYCLES]		= ARMV7_PERFCTR_BUS_CYCLES,
+	[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND]	= HW_OP_UNSUPPORTED,
+	[PERF_COUNT_HW_STALLED_CYCLES_BACKEND]	= HW_OP_UNSUPPORTED,
+};
+
+static const unsigned armv7_a7_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
+					[PERF_COUNT_HW_CACHE_OP_MAX]
+					[PERF_COUNT_HW_CACHE_RESULT_MAX] = {
+	[C(L1D)] = {
+		/*
+		 * The performance counters don't differentiate between read
+		 * and write accesses/misses so this isn't strictly correct,
+		 * but it's the best we can do. Writes and reads get
+		 * combined.
+		 */
+		[C(OP_READ)] = {
+			[C(RESULT_ACCESS)]	= ARMV7_PERFCTR_L1_DCACHE_ACCESS,
+			[C(RESULT_MISS)]	= ARMV7_PERFCTR_L1_DCACHE_REFILL,
+		},
+		[C(OP_WRITE)] = {
+			[C(RESULT_ACCESS)]	= ARMV7_PERFCTR_L1_DCACHE_ACCESS,
+			[C(RESULT_MISS)]	= ARMV7_PERFCTR_L1_DCACHE_REFILL,
+		},
+		[C(OP_PREFETCH)] = {
+			[C(RESULT_ACCESS)]	= CACHE_OP_UNSUPPORTED,
+			[C(RESULT_MISS)]	= CACHE_OP_UNSUPPORTED,
+		},
+	},
+	[C(L1I)] = {
+		[C(OP_READ)] = {
+			[C(RESULT_ACCESS)]	= ARMV7_PERFCTR_L1_ICACHE_ACCESS,
+			[C(RESULT_MISS)]	= ARMV7_PERFCTR_L1_ICACHE_REFILL,
+		},
+		[C(OP_WRITE)] = {
+			[C(RESULT_ACCESS)]	= ARMV7_PERFCTR_L1_ICACHE_ACCESS,
+			[C(RESULT_MISS)]	= ARMV7_PERFCTR_L1_ICACHE_REFILL,
+		},
+		[C(OP_PREFETCH)] = {
+			[C(RESULT_ACCESS)]	= CACHE_OP_UNSUPPORTED,
+			[C(RESULT_MISS)]	= CACHE_OP_UNSUPPORTED,
+		},
+	},
+	[C(LL)] = {
+		[C(OP_READ)] = {
+			[C(RESULT_ACCESS)]	= ARMV7_PERFCTR_L2_CACHE_ACCESS,
+			[C(RESULT_MISS)]	= ARMV7_PERFCTR_L2_CACHE_REFILL,
+		},
+		[C(OP_WRITE)] = {
+			[C(RESULT_ACCESS)]	= ARMV7_PERFCTR_L2_CACHE_ACCESS,
+			[C(RESULT_MISS)]	= ARMV7_PERFCTR_L2_CACHE_REFILL,
+		},
+		[C(OP_PREFETCH)] = {
+			[C(RESULT_ACCESS)]	= CACHE_OP_UNSUPPORTED,
+			[C(RESULT_MISS)]	= CACHE_OP_UNSUPPORTED,
+		},
+	},
+	[C(DTLB)] = {
+		[C(OP_READ)] = {
+			[C(RESULT_ACCESS)]	= CACHE_OP_UNSUPPORTED,
+			[C(RESULT_MISS)]	= ARMV7_PERFCTR_DTLB_REFILL,
+		},
+		[C(OP_WRITE)] = {
+			[C(RESULT_ACCESS)]	= CACHE_OP_UNSUPPORTED,
+			[C(RESULT_MISS)]	= ARMV7_PERFCTR_DTLB_REFILL,
+		},
+		[C(OP_PREFETCH)] = {
+			[C(RESULT_ACCESS)]	= CACHE_OP_UNSUPPORTED,
+			[C(RESULT_MISS)]	= CACHE_OP_UNSUPPORTED,
+		},
+	},
+	[C(ITLB)] = {
+		[C(OP_READ)] = {
+			[C(RESULT_ACCESS)]	= CACHE_OP_UNSUPPORTED,
+			[C(RESULT_MISS)]	= ARMV7_PERFCTR_ITLB_REFILL,
+		},
+		[C(OP_WRITE)] = {
+			[C(RESULT_ACCESS)]	= CACHE_OP_UNSUPPORTED,
+			[C(RESULT_MISS)]	= ARMV7_PERFCTR_ITLB_REFILL,
+		},
+		[C(OP_PREFETCH)] = {
+			[C(RESULT_ACCESS)]	= CACHE_OP_UNSUPPORTED,
+			[C(RESULT_MISS)]	= CACHE_OP_UNSUPPORTED,
+		},
+	},
+	[C(BPU)] = {
+		[C(OP_READ)] = {
+			[C(RESULT_ACCESS)]	= ARMV7_PERFCTR_PC_BRANCH_PRED,
+			[C(RESULT_MISS)]	= ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
+		},
+		[C(OP_WRITE)] = {
+			[C(RESULT_ACCESS)]	= ARMV7_PERFCTR_PC_BRANCH_PRED,
+			[C(RESULT_MISS)]	= ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
+		},
+		[C(OP_PREFETCH)] = {
+			[C(RESULT_ACCESS)]	= CACHE_OP_UNSUPPORTED,
+			[C(RESULT_MISS)]	= CACHE_OP_UNSUPPORTED,
+		},
+	},
+	[C(NODE)] = {
+		[C(OP_READ)] = {
+			[C(RESULT_ACCESS)]	= CACHE_OP_UNSUPPORTED,
+			[C(RESULT_MISS)]	= CACHE_OP_UNSUPPORTED,
+		},
+		[C(OP_WRITE)] = {
+			[C(RESULT_ACCESS)]	= CACHE_OP_UNSUPPORTED,
+			[C(RESULT_MISS)]	= CACHE_OP_UNSUPPORTED,
+		},
+		[C(OP_PREFETCH)] = {
+			[C(RESULT_ACCESS)]	= CACHE_OP_UNSUPPORTED,
+			[C(RESULT_MISS)]	= CACHE_OP_UNSUPPORTED,
+		},
+	},
+};
+
+/*
  * Perf Events' indices
  */
 #define	ARMV7_IDX_CYCLE_COUNTER	0
@@ -1104,6 +1228,12 @@ static int armv7_a15_map_event(struct perf_event *event)
 				&armv7_a15_perf_cache_map, 0xFF);
 }
 
+static int armv7_a7_map_event(struct perf_event *event)
+{
+	return map_cpu_event(event, &armv7_a7_perf_map,
+				&armv7_a7_perf_cache_map, 0xFF);
+}
+
 static struct arm_pmu armv7pmu = {
 	.handle_irq		= armv7pmu_handle_irq,
 	.enable			= armv7pmu_enable_event,
@@ -1164,6 +1294,16 @@ static struct arm_pmu *__init armv7_a15_pmu_init(void)
 	armv7pmu.set_event_filter = armv7pmu_set_event_filter;
 	return &armv7pmu;
 }
+
+static struct arm_pmu *__init armv7_a7_pmu_init(void)
+{
+	armv7pmu.id		= ARM_PERF_PMU_ID_CA7;
+	armv7pmu.name		= "ARMv7 Cortex-A7";
+	armv7pmu.map_event	= armv7_a7_map_event;
+	armv7pmu.num_events	= armv7_read_num_pmnc_events();
+	armv7pmu.set_event_filter = armv7pmu_set_event_filter;
+	return &armv7pmu;
+}
 #else
 static struct arm_pmu *__init armv7_a8_pmu_init(void)
 {
@@ -1184,4 +1324,9 @@ static struct arm_pmu *__init armv7_a15_pmu_init(void)
 {
 	return NULL;
 }
+
+static struct arm_pmu *__init armv7_a7_pmu_init(void)
+{
+	return NULL;
+}
 #endif	/* CONFIG_CPU_V7 */
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index 971d65c253a..2b7b017a20c 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -35,7 +35,6 @@
 #include <asm/cacheflush.h>
 #include <asm/leds.h>
 #include <asm/processor.h>
-#include <asm/system.h>
 #include <asm/thread_notify.h>
 #include <asm/stacktrace.h>
 #include <asm/mach/time.h>
@@ -61,8 +60,6 @@ extern void setup_mm_for_reboot(void);
 
 static volatile int hlt_counter;
 
-#include <mach/system.h>
-
 void disable_hlt(void)
 {
 	hlt_counter++;
@@ -181,13 +178,17 @@ void cpu_idle_wait(void)
 EXPORT_SYMBOL_GPL(cpu_idle_wait);
 
 /*
- * This is our default idle handler.  We need to disable
- * interrupts here to ensure we don't miss a wakeup call.
+ * This is our default idle handler.
  */
+
+void (*arm_pm_idle)(void);
+
 static void default_idle(void)
 {
-	if (!need_resched())
-		arch_idle();
+	if (arm_pm_idle)
+		arm_pm_idle();
+	else
+		cpu_do_idle();
 	local_irq_enable();
 }
 
@@ -215,6 +216,10 @@ void cpu_idle(void)
 				cpu_die();
 #endif
 
+			/*
+			 * We need to disable interrupts here
+			 * to ensure we don't miss a wakeup call.
+			 */
 			local_irq_disable();
 #ifdef CONFIG_PL310_ERRATA_769419
 			wmb();
@@ -222,26 +227,23 @@ void cpu_idle(void)
 			if (hlt_counter) {
 				local_irq_enable();
 				cpu_relax();
-			} else {
+			} else if (!need_resched()) {
 				stop_critical_timings();
 				if (cpuidle_idle_call())
 					pm_idle();
 				start_critical_timings();
 				/*
-				 * This will eventually be removed - pm_idle
-				 * functions should always return with IRQs
-				 * enabled.
+				 * pm_idle functions must always
+				 * return with IRQs enabled.
 				 */
 				WARN_ON(irqs_disabled());
+			} else
 				local_irq_enable();
-			}
 		}
 		leds_event(led_idle_end);
 		rcu_idle_exit();
 		tick_nohz_idle_exit();
-		preempt_enable_no_resched();
-		schedule();
-		preempt_disable();
+		schedule_preempt_disabled();
 	}
 }
 
@@ -526,22 +528,39 @@ unsigned long arch_randomize_brk(struct mm_struct *mm)
 #ifdef CONFIG_MMU
 /*
  * The vectors page is always readable from user space for the
- * atomic helpers and the signal restart code.  Let's declare a mapping
- * for it so it is visible through ptrace and /proc/<pid>/mem.
+ * atomic helpers and the signal restart code. Insert it into the
+ * gate_vma so that it is visible through ptrace and /proc/<pid>/mem.
  */
+static struct vm_area_struct gate_vma;
+
+static int __init gate_vma_init(void)
+{
+	gate_vma.vm_start	= 0xffff0000;
+	gate_vma.vm_end		= 0xffff0000 + PAGE_SIZE;
+	gate_vma.vm_page_prot	= PAGE_READONLY_EXEC;
+	gate_vma.vm_flags	= VM_READ | VM_EXEC |
+				  VM_MAYREAD | VM_MAYEXEC;
+	return 0;
+}
+arch_initcall(gate_vma_init);
+
+struct vm_area_struct *get_gate_vma(struct mm_struct *mm)
+{
+	return &gate_vma;
+}
+
+int in_gate_area(struct mm_struct *mm, unsigned long addr)
+{
+	return (addr >= gate_vma.vm_start) && (addr < gate_vma.vm_end);
+}
 
-int vectors_user_mapping(void)
+int in_gate_area_no_mm(unsigned long addr)
 {
-	struct mm_struct *mm = current->mm;
-	return install_special_mapping(mm, 0xffff0000, PAGE_SIZE,
-				       VM_READ | VM_EXEC |
-				       VM_MAYREAD | VM_MAYEXEC |
-				       VM_ALWAYSDUMP | VM_RESERVED,
-				       NULL);
+	return in_gate_area(NULL, addr);
 }
 
 const char *arch_vma_name(struct vm_area_struct *vma)
 {
-	return (vma->vm_start == 0xffff0000) ? "[vectors]" : NULL;
+	return (vma == &gate_vma) ? "[vectors]" : NULL;
 }
 #endif
diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c
index ede6443c34d..45956c9d0ef 100644
--- a/arch/arm/kernel/ptrace.c
+++ b/arch/arm/kernel/ptrace.c
@@ -26,7 +26,6 @@
 #include <linux/audit.h>
 
 #include <asm/pgtable.h>
-#include <asm/system.h>
 #include <asm/traps.h>
 
 #define REG_PC	15
diff --git a/arch/arm/kernel/sched_clock.c b/arch/arm/kernel/sched_clock.c
index 5416c7c1252..27d186abbc0 100644
--- a/arch/arm/kernel/sched_clock.c
+++ b/arch/arm/kernel/sched_clock.c
@@ -10,6 +10,7 @@
 #include <linux/jiffies.h>
 #include <linux/kernel.h>
 #include <linux/sched.h>
+#include <linux/syscore_ops.h>
 #include <linux/timer.h>
 
 #include <asm/sched_clock.h>
@@ -164,3 +165,20 @@ void __init sched_clock_postinit(void)
 
 	sched_clock_poll(sched_clock_timer.data);
 }
+
+static int sched_clock_suspend(void)
+{
+	sched_clock_poll(sched_clock_timer.data);
+	return 0;
+}
+
+static struct syscore_ops sched_clock_ops = {
+	.suspend = sched_clock_suspend,
+};
+
+static int __init sched_clock_syscore_init(void)
+{
+	register_syscore_ops(&sched_clock_ops);
+	return 0;
+}
+device_initcall(sched_clock_syscore_init);
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index a255c39612c..b91411371ae 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -33,6 +33,7 @@
 #include <linux/sort.h>
 
 #include <asm/unified.h>
+#include <asm/cp15.h>
 #include <asm/cpu.h>
 #include <asm/cputype.h>
 #include <asm/elf.h>
@@ -44,12 +45,13 @@
 #include <asm/cacheflush.h>
 #include <asm/cachetype.h>
 #include <asm/tlbflush.h>
-#include <asm/system.h>
 
 #include <asm/prom.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/irq.h>
 #include <asm/mach/time.h>
+#include <asm/system_info.h>
+#include <asm/system_misc.h>
 #include <asm/traps.h>
 #include <asm/unwind.h>
 #include <asm/memblock.h>
@@ -974,7 +976,6 @@ void __init setup_arch(char **cmdline_p)
 	conswitchp = &dummy_con;
 #endif
 #endif
-	early_trap_init();
 
 	if (mdesc->init_early)
 		mdesc->init_early();
diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
index 9e617bd4a14..7cb532fc8aa 100644
--- a/arch/arm/kernel/signal.c
+++ b/arch/arm/kernel/signal.c
@@ -66,12 +66,13 @@ const unsigned long syscall_restart_code[2] = {
  */
 asmlinkage int sys_sigsuspend(int restart, unsigned long oldmask, old_sigset_t mask)
 {
-	mask &= _BLOCKABLE;
-	spin_lock_irq(&current->sighand->siglock);
+	sigset_t blocked;
+
 	current->saved_sigmask = current->blocked;
-	siginitset(&current->blocked, mask);
-	recalc_sigpending();
-	spin_unlock_irq(&current->sighand->siglock);
+
+	mask &= _BLOCKABLE;
+	siginitset(&blocked, mask);
+	set_current_blocked(&blocked);
 
 	current->state = TASK_INTERRUPTIBLE;
 	schedule();
@@ -280,10 +281,7 @@ static int restore_sigframe(struct pt_regs *regs, struct sigframe __user *sf)
 	err = __copy_from_user(&set, &sf->uc.uc_sigmask, sizeof(set));
 	if (err == 0) {
 		sigdelsetmask(&set, ~_BLOCKABLE);
-		spin_lock_irq(&current->sighand->siglock);
-		current->blocked = set;
-		recalc_sigpending();
-		spin_unlock_irq(&current->sighand->siglock);
+		set_current_blocked(&set);
 	}
 
 	__get_user_error(regs->ARM_r0, &sf->uc.uc_mcontext.arm_r0, err);
@@ -636,13 +634,7 @@ handle_signal(unsigned long sig, struct k_sigaction *ka,
 	/*
 	 * Block the signal if we were successful.
 	 */
-	spin_lock_irq(&tsk->sighand->siglock);
-	sigorsets(&tsk->blocked, &tsk->blocked,
-		  &ka->sa.sa_mask);
-	if (!(ka->sa.sa_flags & SA_NODEFER))
-		sigaddset(&tsk->blocked, sig);
-	recalc_sigpending();
-	spin_unlock_irq(&tsk->sighand->siglock);
+	block_sigmask(ka, sig);
 
 	return 0;
 }
diff --git a/arch/arm/kernel/sleep.S b/arch/arm/kernel/sleep.S
index 1f268bda455..987dcf33415 100644
--- a/arch/arm/kernel/sleep.S
+++ b/arch/arm/kernel/sleep.S
@@ -4,7 +4,6 @@
 #include <asm/assembler.h>
 #include <asm/glue-cache.h>
 #include <asm/glue-proc.h>
-#include <asm/system.h>
 	.text
 
 /*
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index cdeb727527d..2cee7d1eb95 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -58,6 +58,8 @@ enum ipi_msg_type {
 	IPI_CPU_STOP,
 };
 
+static DECLARE_COMPLETION(cpu_running);
+
 int __cpuinit __cpu_up(unsigned int cpu)
 {
 	struct cpuinfo_arm *ci = &per_cpu(cpu_data, cpu);
@@ -98,20 +100,12 @@ int __cpuinit __cpu_up(unsigned int cpu)
 	 */
 	ret = boot_secondary(cpu, idle);
 	if (ret == 0) {
-		unsigned long timeout;
-
 		/*
 		 * CPU was successfully started, wait for it
 		 * to come online or time out.
 		 */
-		timeout = jiffies + HZ;
-		while (time_before(jiffies, timeout)) {
-			if (cpu_online(cpu))
-				break;
-
-			udelay(10);
-			barrier();
-		}
+		wait_for_completion_timeout(&cpu_running,
+						 msecs_to_jiffies(1000));
 
 		if (!cpu_online(cpu)) {
 			pr_crit("CPU%u: failed to come online\n", cpu);
@@ -246,6 +240,8 @@ static void __cpuinit smp_store_cpu_info(unsigned int cpuid)
 	store_cpu_topology(cpuid);
 }
 
+static void percpu_timer_setup(void);
+
 /*
  * This is the secondary CPU boot entry.  We're using this CPUs
  * idle thread stack, but a set of temporary page tables.
@@ -286,22 +282,16 @@ asmlinkage void __cpuinit secondary_start_kernel(void)
 	/*
 	 * OK, now it's safe to let the boot CPU continue.  Wait for
 	 * the CPU migration code to notice that the CPU is online
-	 * before we continue.
+	 * before we continue - which happens after __cpu_up returns.
 	 */
 	set_cpu_online(cpu, true);
+	complete(&cpu_running);
 
 	/*
 	 * Setup the percpu timer for this CPU.
 	 */
 	percpu_timer_setup();
 
-	while (!cpu_active(cpu))
-		cpu_relax();
-
-	/*
-	 * cpu_active bit is set, so it's safe to enalbe interrupts
-	 * now.
-	 */
 	local_irq_enable();
 	local_fiq_enable();
 
@@ -459,7 +449,20 @@ static void __cpuinit broadcast_timer_setup(struct clock_event_device *evt)
 	clockevents_register_device(evt);
 }
 
-void __cpuinit percpu_timer_setup(void)
+static struct local_timer_ops *lt_ops;
+
+#ifdef CONFIG_LOCAL_TIMERS
+int local_timer_register(struct local_timer_ops *ops)
+{
+	if (lt_ops)
+		return -EBUSY;
+
+	lt_ops = ops;
+	return 0;
+}
+#endif
+
+static void __cpuinit percpu_timer_setup(void)
 {
 	unsigned int cpu = smp_processor_id();
 	struct clock_event_device *evt = &per_cpu(percpu_clockevent, cpu);
@@ -467,7 +470,7 @@ void __cpuinit percpu_timer_setup(void)
 	evt->cpumask = cpumask_of(cpu);
 	evt->broadcast = smp_timer_broadcast;
 
-	if (local_timer_setup(evt))
+	if (!lt_ops || lt_ops->setup(evt))
 		broadcast_timer_setup(evt);
 }
 
@@ -482,7 +485,8 @@ static void percpu_timer_stop(void)
 	unsigned int cpu = smp_processor_id();
 	struct clock_event_device *evt = &per_cpu(percpu_clockevent, cpu);
 
-	local_timer_stop(evt);
+	if (lt_ops)
+		lt_ops->stop(evt);
 }
 #endif
 
diff --git a/arch/arm/kernel/smp_tlb.c b/arch/arm/kernel/smp_tlb.c
index 7dcb35285be..02c5d2ce23b 100644
--- a/arch/arm/kernel/smp_tlb.c
+++ b/arch/arm/kernel/smp_tlb.c
@@ -13,18 +13,6 @@
 #include <asm/smp_plat.h>
 #include <asm/tlbflush.h>
 
-static void on_each_cpu_mask(void (*func)(void *), void *info, int wait,
-	const struct cpumask *mask)
-{
-	preempt_disable();
-
-	smp_call_function_many(mask, func, info, wait);
-	if (cpumask_test_cpu(smp_processor_id(), mask))
-		func(info);
-
-	preempt_enable();
-}
-
 /**********************************************************************/
 
 /*
@@ -87,7 +75,7 @@ void flush_tlb_all(void)
 void flush_tlb_mm(struct mm_struct *mm)
 {
 	if (tlb_ops_need_broadcast())
-		on_each_cpu_mask(ipi_flush_tlb_mm, mm, 1, mm_cpumask(mm));
+		on_each_cpu_mask(mm_cpumask(mm), ipi_flush_tlb_mm, mm, 1);
 	else
 		local_flush_tlb_mm(mm);
 }
@@ -98,7 +86,8 @@ void flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr)
 		struct tlb_args ta;
 		ta.ta_vma = vma;
 		ta.ta_start = uaddr;
-		on_each_cpu_mask(ipi_flush_tlb_page, &ta, 1, mm_cpumask(vma->vm_mm));
+		on_each_cpu_mask(mm_cpumask(vma->vm_mm), ipi_flush_tlb_page,
+					&ta, 1);
 	} else
 		local_flush_tlb_page(vma, uaddr);
 }
@@ -121,7 +110,8 @@ void flush_tlb_range(struct vm_area_struct *vma,
 		ta.ta_vma = vma;
 		ta.ta_start = start;
 		ta.ta_end = end;
-		on_each_cpu_mask(ipi_flush_tlb_range, &ta, 1, mm_cpumask(vma->vm_mm));
+		on_each_cpu_mask(mm_cpumask(vma->vm_mm), ipi_flush_tlb_range,
+					&ta, 1);
 	} else
 		local_flush_tlb_range(vma, start, end);
 }
diff --git a/arch/arm/kernel/smp_twd.c b/arch/arm/kernel/smp_twd.c
index 7a79b24597b..fef42b21cec 100644
--- a/arch/arm/kernel/smp_twd.c
+++ b/arch/arm/kernel/smp_twd.c
@@ -18,20 +18,23 @@
 #include <linux/smp.h>
 #include <linux/jiffies.h>
 #include <linux/clockchips.h>
-#include <linux/irq.h>
+#include <linux/interrupt.h>
 #include <linux/io.h>
+#include <linux/of_irq.h>
+#include <linux/of_address.h>
 
 #include <asm/smp_twd.h>
 #include <asm/localtimer.h>
 #include <asm/hardware/gic.h>
 
 /* set up by the platform code */
-void __iomem *twd_base;
+static void __iomem *twd_base;
 
 static struct clk *twd_clk;
 static unsigned long twd_timer_rate;
 
 static struct clock_event_device __percpu **twd_evt;
+static int twd_ppi;
 
 static void twd_set_mode(enum clock_event_mode mode,
 			struct clock_event_device *clk)
@@ -77,7 +80,7 @@ static int twd_set_next_event(unsigned long evt,
  * If a local timer interrupt has occurred, acknowledge and return 1.
  * Otherwise, return 0.
  */
-int twd_timer_ack(void)
+static int twd_timer_ack(void)
 {
 	if (__raw_readl(twd_base + TWD_TIMER_INTSTAT)) {
 		__raw_writel(1, twd_base + TWD_TIMER_INTSTAT);
@@ -87,7 +90,7 @@ int twd_timer_ack(void)
 	return 0;
 }
 
-void twd_timer_stop(struct clock_event_device *clk)
+static void twd_timer_stop(struct clock_event_device *clk)
 {
 	twd_set_mode(CLOCK_EVT_MODE_UNUSED, clk);
 	disable_percpu_irq(clk->irq);
@@ -222,28 +225,10 @@ static struct clk *twd_get_clock(void)
 /*
  * Setup the local clock events for a CPU.
  */
-void __cpuinit twd_timer_setup(struct clock_event_device *clk)
+static int __cpuinit twd_timer_setup(struct clock_event_device *clk)
 {
 	struct clock_event_device **this_cpu_clk;
 
-	if (!twd_evt) {
-		int err;
-
-		twd_evt = alloc_percpu(struct clock_event_device *);
-		if (!twd_evt) {
-			pr_err("twd: can't allocate memory\n");
-			return;
-		}
-
-		err = request_percpu_irq(clk->irq, twd_handler,
-					 "twd", twd_evt);
-		if (err) {
-			pr_err("twd: can't register interrupt %d (%d)\n",
-			       clk->irq, err);
-			return;
-		}
-	}
-
 	if (!twd_clk)
 		twd_clk = twd_get_clock();
 
@@ -260,6 +245,7 @@ void __cpuinit twd_timer_setup(struct clock_event_device *clk)
 	clk->rating = 350;
 	clk->set_mode = twd_set_mode;
 	clk->set_next_event = twd_set_next_event;
+	clk->irq = twd_ppi;
 
 	this_cpu_clk = __this_cpu_ptr(twd_evt);
 	*this_cpu_clk = clk;
@@ -267,4 +253,95 @@ void __cpuinit twd_timer_setup(struct clock_event_device *clk)
 	clockevents_config_and_register(clk, twd_timer_rate,
 					0xf, 0xffffffff);
 	enable_percpu_irq(clk->irq, 0);
+
+	return 0;
+}
+
+static struct local_timer_ops twd_lt_ops __cpuinitdata = {
+	.setup	= twd_timer_setup,
+	.stop	= twd_timer_stop,
+};
+
+static int __init twd_local_timer_common_register(void)
+{
+	int err;
+
+	twd_evt = alloc_percpu(struct clock_event_device *);
+	if (!twd_evt) {
+		err = -ENOMEM;
+		goto out_free;
+	}
+
+	err = request_percpu_irq(twd_ppi, twd_handler, "twd", twd_evt);
+	if (err) {
+		pr_err("twd: can't register interrupt %d (%d)\n", twd_ppi, err);
+		goto out_free;
+	}
+
+	err = local_timer_register(&twd_lt_ops);
+	if (err)
+		goto out_irq;
+
+	return 0;
+
+out_irq:
+	free_percpu_irq(twd_ppi, twd_evt);
+out_free:
+	iounmap(twd_base);
+	twd_base = NULL;
+	free_percpu(twd_evt);
+
+	return err;
 }
+
+int __init twd_local_timer_register(struct twd_local_timer *tlt)
+{
+	if (twd_base || twd_evt)
+		return -EBUSY;
+
+	twd_ppi	= tlt->res[1].start;
+
+	twd_base = ioremap(tlt->res[0].start, resource_size(&tlt->res[0]));
+	if (!twd_base)
+		return -ENOMEM;
+
+	return twd_local_timer_common_register();
+}
+
+#ifdef CONFIG_OF
+const static struct of_device_id twd_of_match[] __initconst = {
+	{ .compatible = "arm,cortex-a9-twd-timer",	},
+	{ .compatible = "arm,cortex-a5-twd-timer",	},
+	{ .compatible = "arm,arm11mp-twd-timer",	},
+	{ },
+};
+
+void __init twd_local_timer_of_register(void)
+{
+	struct device_node *np;
+	int err;
+
+	np = of_find_matching_node(NULL, twd_of_match);
+	if (!np) {
+		err = -ENODEV;
+		goto out;
+	}
+
+	twd_ppi = irq_of_parse_and_map(np, 0);
+	if (!twd_ppi) {
+		err = -EINVAL;
+		goto out;
+	}
+
+	twd_base = of_iomap(np, 0);
+	if (!twd_base) {
+		err = -ENOMEM;
+		goto out;
+	}
+
+	err = twd_local_timer_common_register();
+
+out:
+	WARN(err, "twd_local_timer_of_register failed (%d)\n", err);
+}
+#endif
diff --git a/arch/arm/kernel/tcm.c b/arch/arm/kernel/tcm.c
index 01ec453bb92..30ae6bb4a31 100644
--- a/arch/arm/kernel/tcm.c
+++ b/arch/arm/kernel/tcm.c
@@ -16,6 +16,7 @@
 #include <asm/cputype.h>
 #include <asm/mach/map.h>
 #include <asm/memory.h>
+#include <asm/system_info.h>
 #include "tcm.h"
 
 static struct gen_pool *tcm_pool;
diff --git a/arch/arm/kernel/thumbee.c b/arch/arm/kernel/thumbee.c
index 9cb7aaca159..aab89976405 100644
--- a/arch/arm/kernel/thumbee.c
+++ b/arch/arm/kernel/thumbee.c
@@ -20,6 +20,7 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 
+#include <asm/system_info.h>
 #include <asm/thread_notify.h>
 
 /*
diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c
index 8c57dd3680e..fe31b22f18f 100644
--- a/arch/arm/kernel/time.c
+++ b/arch/arm/kernel/time.c
@@ -25,8 +25,6 @@
 #include <linux/timer.h>
 #include <linux/irq.h>
 
-#include <linux/mc146818rtc.h>
-
 #include <asm/leds.h>
 #include <asm/thread_info.h>
 #include <asm/sched_clock.h>
@@ -149,8 +147,6 @@ void __init time_init(void)
 {
 	system_timer = machine_desc->timer;
 	system_timer->init();
-#ifdef CONFIG_HAVE_SCHED_CLOCK
 	sched_clock_postinit();
-#endif
 }
 
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index f84dfe67724..778454750a6 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -29,11 +29,11 @@
 #include <linux/atomic.h>
 #include <asm/cacheflush.h>
 #include <asm/exception.h>
-#include <asm/system.h>
 #include <asm/unistd.h>
 #include <asm/traps.h>
 #include <asm/unwind.h>
 #include <asm/tls.h>
+#include <asm/system_misc.h>
 
 #include "signal.h"
 
@@ -227,6 +227,11 @@ void show_stack(struct task_struct *tsk, unsigned long *sp)
 #else
 #define S_SMP ""
 #endif
+#ifdef CONFIG_THUMB2_KERNEL
+#define S_ISA " THUMB2"
+#else
+#define S_ISA " ARM"
+#endif
 
 static int __die(const char *str, int err, struct thread_info *thread, struct pt_regs *regs)
 {
@@ -234,8 +239,8 @@ static int __die(const char *str, int err, struct thread_info *thread, struct pt
 	static int die_counter;
 	int ret;
 
-	printk(KERN_EMERG "Internal error: %s: %x [#%d]" S_PREEMPT S_SMP "\n",
-	       str, err, ++die_counter);
+	printk(KERN_EMERG "Internal error: %s: %x [#%d]" S_PREEMPT S_SMP
+	       S_ISA "\n", str, err, ++die_counter);
 
 	/* trap and error numbers are mostly meaningless on ARM */
 	ret = notify_die(DIE_OOPS, str, regs, err, tsk->thread.trap_no, SIGSEGV);
@@ -784,18 +789,16 @@ static void __init kuser_get_tls_init(unsigned long vectors)
 		memcpy((void *)vectors + 0xfe0, (void *)vectors + 0xfe8, 4);
 }
 
-void __init early_trap_init(void)
+void __init early_trap_init(void *vectors_base)
 {
-#if defined(CONFIG_CPU_USE_DOMAINS)
-	unsigned long vectors = CONFIG_VECTORS_BASE;
-#else
-	unsigned long vectors = (unsigned long)vectors_page;
-#endif
+	unsigned long vectors = (unsigned long)vectors_base;
 	extern char __stubs_start[], __stubs_end[];
 	extern char __vectors_start[], __vectors_end[];
 	extern char __kuser_helper_start[], __kuser_helper_end[];
 	int kuser_sz = __kuser_helper_end - __kuser_helper_start;
 
+	vectors_page = vectors_base;
+
 	/*
 	 * Copy the vectors, stubs and kuser helpers (in entry-armv.S)
 	 * into the vector page, mapped at 0xffff0000, and ensure these