diff --git a/arch/blackfin/include/asm/hardirq.h b/arch/blackfin/include/asm/hardirq.h
index 717181a..cbd52f8 100644
--- a/arch/blackfin/include/asm/hardirq.h
+++ b/arch/blackfin/include/asm/hardirq.h
@@ -1,47 +1,11 @@
 #ifndef __BFIN_HARDIRQ_H
 #define __BFIN_HARDIRQ_H
 
-#include <linux/cache.h>
-#include <linux/threads.h>
-#include <asm/irq.h>
-
-typedef struct {
-	unsigned int __softirq_pending;
-	unsigned int __syscall_count;
-	struct task_struct *__ksoftirqd_task;
-} ____cacheline_aligned irq_cpustat_t;
-
-#include <linux/irq_cpustat.h>	/* Standard mappings for irq_cpustat_t above */
-
-/*
- * We put the hardirq and softirq counter into the preemption
- * counter. The bitmask has the following meaning:
- *
- * - bits 0-7 are the preemption count (max preemption depth: 256)
- * - bits 8-15 are the softirq count (max # of softirqs: 256)
- * - bits 16-23 are the hardirq count (max # of hardirqs: 256)
- *
- * - ( bit 26 is the PREEMPT_ACTIVE flag. )
- *
- * PREEMPT_MASK: 0x000000ff
- * HARDIRQ_MASK: 0x0000ff00
- * SOFTIRQ_MASK: 0x00ff0000
- */
-
-#if NR_IRQS > 256
-#define HARDIRQ_BITS	9
-#else
-#define HARDIRQ_BITS	8
-#endif
-
-#ifdef NR_IRQS
-# if (1 << HARDIRQ_BITS) < NR_IRQS
-# error HARDIRQ_BITS is too low!
-# endif
-#endif
-
 #define __ARCH_IRQ_EXIT_IRQS_DISABLED	1
 
 extern void ack_bad_irq(unsigned int irq);
+#define ack_bad_irq ack_bad_irq
+
+#include <asm-generic/hardirq.h>
 
 #endif
diff --git a/arch/blackfin/include/asm/irq.h b/arch/blackfin/include/asm/irq.h
index 400bdd5..9a7f63a 100644
--- a/arch/blackfin/include/asm/irq.h
+++ b/arch/blackfin/include/asm/irq.h
@@ -45,9 +45,6 @@
 		: "d" (bfin_irq_flags) \
 	)
 
-static inline int irq_canonicalize(int irq)
-{
-	return irq;
-}
+#include <asm-generic/irq.h>
 
 #endif				/* _BFIN_IRQ_H_ */
diff --git a/arch/blackfin/include/asm/processor.h b/arch/blackfin/include/asm/processor.h
index 3040415..d0be99b 100644
--- a/arch/blackfin/include/asm/processor.h
+++ b/arch/blackfin/include/asm/processor.h
@@ -7,9 +7,8 @@
  */
 #define current_text_addr() ({ __label__ _l; _l: &&_l;})
 
+#include <asm/ptrace.h>
 #include <asm/blackfin.h>
-#include <asm/segment.h>
-#include <linux/compiler.h>
 
 static inline unsigned long rdusp(void)
 {
@@ -59,36 +58,8 @@
 	PS_S, 0, 0						\
 }
 
-/*
- * Do necessary setup to start up a newly executed thread.
- *
- * pass the data segment into user programs if it exists,
- * it can't hurt anything as far as I can tell
- */
-#ifndef CONFIG_SMP
-#define start_thread(_regs, _pc, _usp)					\
-do {									\
-	set_fs(USER_DS);						\
-	(_regs)->pc = (_pc);						\
-	if (current->mm)						\
-		(_regs)->p5 = current->mm->start_data;			\
-	task_thread_info(current)->l1_task_info.stack_start		\
-		= (void *)current->mm->context.stack_start;		\
-	task_thread_info(current)->l1_task_info.lowest_sp = (void *)(_usp); \
-	memcpy(L1_SCRATCH_TASK_INFO, &task_thread_info(current)->l1_task_info, \
-		sizeof(*L1_SCRATCH_TASK_INFO));				\
-	wrusp(_usp);							\
-} while(0)
-#else
-#define start_thread(_regs, _pc, _usp)					\
-do {									\
-	set_fs(USER_DS);						\
-	(_regs)->pc = (_pc);						\
-	if (current->mm)						\
-		(_regs)->p5 = current->mm->start_data;			\
-	wrusp(_usp);							\
-} while (0)
-#endif
+extern void start_thread(struct pt_regs *regs, unsigned long new_ip,
+					       unsigned long new_sp);
 
 /* Forward declaration, a strange C thing */
 struct task_struct;
diff --git a/arch/blackfin/kernel/process.c b/arch/blackfin/kernel/process.c
index 30d0843..3e1d86e 100644
--- a/arch/blackfin/kernel/process.c
+++ b/arch/blackfin/kernel/process.c
@@ -160,6 +160,29 @@
 }
 EXPORT_SYMBOL(kernel_thread);
 
+/*
+ * Do necessary setup to start up a newly executed thread.
+ *
+ * pass the data segment into user programs if it exists,
+ * it can't hurt anything as far as I can tell
+ */
+void start_thread(struct pt_regs *regs, unsigned long new_ip, unsigned long new_sp)
+{
+	set_fs(USER_DS);
+	regs->pc = new_ip;
+	if (current->mm)
+		regs->p5 = current->mm->start_data;
+#ifdef CONFIG_SMP
+	task_thread_info(current)->l1_task_info.stack_start =
+		(void *)current->mm->context.stack_start;
+	task_thread_info(current)->l1_task_info.lowest_sp = (void *)new_sp;
+	memcpy(L1_SCRATCH_TASK_INFO, &task_thread_info(current)->l1_task_info,
+	       sizeof(*L1_SCRATCH_TASK_INFO));
+#endif
+	wrusp(new_sp);
+}
+EXPORT_SYMBOL_GPL(start_thread);
+
 void flush_thread(void)
 {
 }