3 files changed, 13 insertions, 22 deletions

diff --git a/arch/microblaze/mm/fault.c b/arch/microblaze/mm/fault.c
index d9d249a66ff2..7af87f4b2c2c 100644
--- a/arch/microblaze/mm/fault.c
+++ b/arch/microblaze/mm/fault.c
@@ -106,7 +106,7 @@ void do_page_fault(struct pt_regs *regs, unsigned long address,
         regs->esr = error_code;
 
         /* On a kernel SLB miss we can only check for a valid exception entry */
-        if (kernel_mode(regs) && (address >= TASK_SIZE)) {
+        if (unlikely(kernel_mode(regs) && (address >= TASK_SIZE))) {
                 printk(KERN_WARNING "kernel task_size exceed");
                 _exception(SIGSEGV, regs, code, address);
         }
@@ -122,7 +122,7 @@ void do_page_fault(struct pt_regs *regs, unsigned long address,
         }
 #endif /* CONFIG_KGDB */
 
-        if (in_atomic() || !mm) {
+        if (unlikely(in_atomic() || !mm)) {
                 if (kernel_mode(regs))
                         goto bad_area_nosemaphore;
 
@@ -150,7 +150,7 @@ void do_page_fault(struct pt_regs *regs, unsigned long address,
          * source.  If this is invalid we can skip the address space check,
          * thus avoiding the deadlock.
          */
-        if (!down_read_trylock(&mm->mmap_sem)) {
+        if (unlikely(!down_read_trylock(&mm->mmap_sem))) {
                 if (kernel_mode(regs) && !search_exception_tables(regs->pc))
                         goto bad_area_nosemaphore;
 
@@ -158,16 +158,16 @@ void do_page_fault(struct pt_regs *regs, unsigned long address,
         }
 
         vma = find_vma(mm, address);
-        if (!vma)
+        if (unlikely(!vma))
                 goto bad_area;
 
         if (vma->vm_start <= address)
                 goto good_area;
 
-        if (!(vma->vm_flags & VM_GROWSDOWN))
+        if (unlikely(!(vma->vm_flags & VM_GROWSDOWN)))
                 goto bad_area;
 
-        if (!is_write)
+        if (unlikely(!is_write))
                 goto bad_area;
 
         /*
@@ -179,7 +179,7 @@ void do_page_fault(struct pt_regs *regs, unsigned long address,
          * before setting the user r1.  Thus we allow the stack to
          * expand to 1MB without further checks.
          */
-        if (address + 0x100000 < vma->vm_end) {
+        if (unlikely(address + 0x100000 < vma->vm_end)) {
 
                 /* get user regs even if this fault is in kernel mode */
                 struct pt_regs *uregs = current->thread.regs;
@@ -209,15 +209,15 @@ good_area:
         code = SEGV_ACCERR;
 
         /* a write */
-        if (is_write) {
-                if (!(vma->vm_flags & VM_WRITE))
+        if (unlikely(is_write)) {
+                if (unlikely(!(vma->vm_flags & VM_WRITE)))
                         goto bad_area;
         /* a read */
         } else {
                 /* protection fault */
-                if (error_code & 0x08000000)
+                if (unlikely(error_code & 0x08000000))
                         goto bad_area;
-                if (!(vma->vm_flags & (VM_READ | VM_EXEC)))
+                if (unlikely(!(vma->vm_flags & (VM_READ | VM_EXEC))))
                         goto bad_area;
         }
 
@@ -235,7 +235,7 @@ survive:
                         goto do_sigbus;
                 BUG();
         }
-        if (fault & VM_FAULT_MAJOR)
+        if (unlikely(fault & VM_FAULT_MAJOR))
                 current->maj_flt++;
         else
                 current->min_flt++;
diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
index 77c9e3033e71..f42c2dde8b1c 100644
--- a/arch/microblaze/mm/init.c
+++ b/arch/microblaze/mm/init.c
@@ -166,7 +166,6 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end)
         for (addr = begin; addr < end; addr += PAGE_SIZE) {
                 ClearPageReserved(virt_to_page(addr));
                 init_page_count(virt_to_page(addr));
-                memset((void *)addr, 0xcc, PAGE_SIZE);
                 free_page(addr);
                 totalram_pages++;
         }
@@ -209,14 +208,6 @@ void __init mem_init(void)
 }
 
 #ifndef CONFIG_MMU
-/* Check against bounds of physical memory */
-int ___range_ok(unsigned long addr, unsigned long size)
-{
-        return ((addr < memory_start) ||
-                ((addr + size) > memory_end));
-}
-EXPORT_SYMBOL(___range_ok);
-
 int page_is_ram(unsigned long pfn)
 {
         return __range_ok(pfn, 0);
diff --git a/arch/microblaze/mm/pgtable.c b/arch/microblaze/mm/pgtable.c
index 63a6fd07c48f..d31312cde6ea 100644
--- a/arch/microblaze/mm/pgtable.c
+++ b/arch/microblaze/mm/pgtable.c
@@ -154,7 +154,7 @@ int map_page(unsigned long va, phys_addr_t pa, int flags)
                 err = 0;
                 set_pte_at(&init_mm, va, pg, pfn_pte(pa >> PAGE_SHIFT,
                                 __pgprot(flags)));
-                if (mem_init_done)
+                if (unlikely(mem_init_done))
                         flush_HPTE(0, va, pmd_val(*pd));
                         /* flush_HPTE(0, va, pg); */
         }