diff --git a/arch/arc/include/asm/page.h b/arch/arc/include/asm/page.h
index e43fe27ec54d5..02b53ad811fb6 100644
--- a/arch/arc/include/asm/page.h
+++ b/arch/arc/include/asm/page.h
@@ -108,7 +108,7 @@ extern int pfn_valid(unsigned long pfn);
 
 #else /* CONFIG_HIGHMEM */
 
-#define ARCH_PFN_OFFSET		virt_to_pfn(CONFIG_LINUX_RAM_BASE)
+#define ARCH_PFN_OFFSET		virt_to_pfn((void *)CONFIG_LINUX_RAM_BASE)
 
 #endif /* CONFIG_HIGHMEM */
 
diff --git a/arch/csky/abiv2/cacheflush.c b/arch/csky/abiv2/cacheflush.c
index 9923cd24db583..500eb8f693971 100644
--- a/arch/csky/abiv2/cacheflush.c
+++ b/arch/csky/abiv2/cacheflush.c
@@ -27,11 +27,9 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long address,
 
 	addr = (unsigned long) kmap_atomic(page);
 
+	icache_inv_range(address, address + PAGE_SIZE);
 	dcache_wb_range(addr, addr + PAGE_SIZE);
 
-	if (vma->vm_flags & VM_EXEC)
-		icache_inv_range(addr, addr + PAGE_SIZE);
-
 	kunmap_atomic((void *) addr);
 }
 
diff --git a/arch/csky/include/asm/page.h b/arch/csky/include/asm/page.h
index b23e3006a9e06..4a0502e324a60 100644
--- a/arch/csky/include/asm/page.h
+++ b/arch/csky/include/asm/page.h
@@ -34,9 +34,6 @@
 
 #include <linux/pfn.h>
 
-#define virt_to_pfn(kaddr)      (__pa(kaddr) >> PAGE_SHIFT)
-#define pfn_to_virt(pfn)        __va((pfn) << PAGE_SHIFT)
-
 #define virt_addr_valid(kaddr)  ((void *)(kaddr) >= (void *)PAGE_OFFSET && \
 			(void *)(kaddr) < high_memory)
 
@@ -80,6 +77,16 @@ extern unsigned long va_pa_offset;
 
 #define __pa_symbol(x)	__pa(RELOC_HIDE((unsigned long)(x), 0))
 
+static inline unsigned long virt_to_pfn(const void *kaddr)
+{
+	return __pa(kaddr) >> PAGE_SHIFT;
+}
+
+static inline void * pfn_to_virt(unsigned long pfn)
+{
+	return (void *)((unsigned long)__va(pfn) << PAGE_SHIFT);
+}
+
 #define MAP_NR(x)	PFN_DOWN((unsigned long)(x) - PAGE_OFFSET - \
 				 PHYS_OFFSET_OFFSET)
 #define virt_to_page(x)	(mem_map + MAP_NR(x))
diff --git a/arch/csky/include/asm/ptrace.h b/arch/csky/include/asm/ptrace.h
index 4202aab6df426..0634b7895d81d 100644
--- a/arch/csky/include/asm/ptrace.h
+++ b/arch/csky/include/asm/ptrace.h
@@ -96,5 +96,7 @@ static inline unsigned long regs_get_register(struct pt_regs *regs,
 	return *(unsigned long *)((unsigned long)regs + offset);
 }
 
+asmlinkage int syscall_trace_enter(struct pt_regs *regs);
+asmlinkage void syscall_trace_exit(struct pt_regs *regs);
 #endif /* __ASSEMBLY__ */
 #endif /* __ASM_CSKY_PTRACE_H */
diff --git a/arch/csky/include/asm/sections.h b/arch/csky/include/asm/sections.h
index 4192cba8445dc..83e82b7c0f6c4 100644
--- a/arch/csky/include/asm/sections.h
+++ b/arch/csky/include/asm/sections.h
@@ -7,4 +7,6 @@
 
 extern char _start[];
 
+asmlinkage void csky_start(unsigned int unused, void *dtb_start);
+
 #endif /* __ASM_SECTIONS_H */
diff --git a/arch/csky/include/asm/traps.h b/arch/csky/include/asm/traps.h
index 421a4195e2feb..1e7d303b91e98 100644
--- a/arch/csky/include/asm/traps.h
+++ b/arch/csky/include/asm/traps.h
@@ -40,4 +40,19 @@ do { \
 
 void csky_alignment(struct pt_regs *regs);
 
+asmlinkage void do_trap_unknown(struct pt_regs *regs);
+asmlinkage void do_trap_zdiv(struct pt_regs *regs);
+asmlinkage void do_trap_buserr(struct pt_regs *regs);
+asmlinkage void do_trap_misaligned(struct pt_regs *regs);
+asmlinkage void do_trap_bkpt(struct pt_regs *regs);
+asmlinkage void do_trap_illinsn(struct pt_regs *regs);
+asmlinkage void do_trap_fpe(struct pt_regs *regs);
+asmlinkage void do_trap_priv(struct pt_regs *regs);
+asmlinkage void trap_c(struct pt_regs *regs);
+
+asmlinkage void do_notify_resume(struct pt_regs *regs,
+			unsigned long thread_info_flags);
+
+void trap_init(void);
+
 #endif /* __ASM_CSKY_TRAPS_H */
diff --git a/arch/csky/kernel/module.c b/arch/csky/kernel/module.c
index f11b3e5733448..0b56a8cd12a3d 100644
--- a/arch/csky/kernel/module.c
+++ b/arch/csky/kernel/module.c
@@ -40,7 +40,7 @@ static void jsri_2_lrw_jsr(uint32_t *location)
 	}
 }
 #else
-static void inline jsri_2_lrw_jsr(uint32_t *location)
+static inline void jsri_2_lrw_jsr(uint32_t *location)
 {
 	return;
 }
diff --git a/arch/csky/kernel/vdso/vgettimeofday.c b/arch/csky/kernel/vdso/vgettimeofday.c
index da491832c098a..c4831145eed55 100644
--- a/arch/csky/kernel/vdso/vgettimeofday.c
+++ b/arch/csky/kernel/vdso/vgettimeofday.c
@@ -3,24 +3,35 @@
 #include <linux/time.h>
 #include <linux/types.h>
 
+extern
+int __vdso_clock_gettime(clockid_t clock,
+			 struct old_timespec32 *ts);
 int __vdso_clock_gettime(clockid_t clock,
 			 struct old_timespec32 *ts)
 {
 	return __cvdso_clock_gettime32(clock, ts);
 }
 
+int __vdso_clock_gettime64(clockid_t clock,
+			   struct __kernel_timespec *ts);
 int __vdso_clock_gettime64(clockid_t clock,
 			   struct __kernel_timespec *ts)
 {
 	return __cvdso_clock_gettime(clock, ts);
 }
 
+extern
+int __vdso_gettimeofday(struct __kernel_old_timeval *tv,
+			struct timezone *tz);
 int __vdso_gettimeofday(struct __kernel_old_timeval *tv,
 			struct timezone *tz)
 {
 	return __cvdso_gettimeofday(tv, tz);
 }
 
+extern
+int __vdso_clock_getres(clockid_t clock_id,
+			struct old_timespec32 *res);
 int __vdso_clock_getres(clockid_t clock_id,
 			struct old_timespec32 *res)
 {