Merge branches 'irq-core-for-linus' and 'core-locking-for-linus' of git://git.kernel...

[pandora-kernel.git] / arch / mips / mm / highmem.c

diff --git a/arch/mips/mm/highmem.c b/arch/mips/mm/highmem.c
index 127d732..3634c7e 100644 (file)
--- a/arch/mips/mm/highmem.c
+++ b/arch/mips/mm/highmem.c
@@ -9,7 +9,7 @@ static pte_t *kmap_pte;
 
 unsigned long highstart_pfn, highend_pfn;
 
-void *__kmap(struct page *page)
+void *kmap(struct page *page)
 {
        void *addr;
 
@@ -21,16 +21,16 @@ void *__kmap(struct page *page)
 
        return addr;
 }
-EXPORT_SYMBOL(__kmap);
+EXPORT_SYMBOL(kmap);
 
-void __kunmap(struct page *page)
+void kunmap(struct page *page)
 {
        BUG_ON(in_interrupt());
        if (!PageHighMem(page))
                return;
        kunmap_high(page);
 }
-EXPORT_SYMBOL(__kunmap);
+EXPORT_SYMBOL(kunmap);
 
 /*
  * kmap_atomic/kunmap_atomic is significantly faster than kmap/kunmap because
@@ -41,17 +41,17 @@ EXPORT_SYMBOL(__kunmap);
  * kmaps are appropriate for short, tight code paths only.
  */
 
-void *__kmap_atomic(struct page *page, enum km_type type)
+void *__kmap_atomic(struct page *page)
 {
-       enum fixed_addresses idx;
        unsigned long vaddr;
+       int idx, type;
 
        /* even !CONFIG_PREEMPT needs this, for in_atomic in do_page_fault */
        pagefault_disable();
        if (!PageHighMem(page))
                return page_address(page);
 
-       debug_kmap_atomic(type);
+       type = kmap_atomic_idx_push();
        idx = type + KM_TYPE_NR*smp_processor_id();
        vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
 #ifdef CONFIG_DEBUG_HIGHMEM
@@ -64,27 +64,32 @@ void *__kmap_atomic(struct page *page, enum km_type type)
 }
 EXPORT_SYMBOL(__kmap_atomic);
 
-void __kunmap_atomic(void *kvaddr, enum km_type type)
+void __kunmap_atomic(void *kvaddr)
 {
-#ifdef CONFIG_DEBUG_HIGHMEM
        unsigned long vaddr = (unsigned long) kvaddr & PAGE_MASK;
-       enum fixed_addresses idx = type + KM_TYPE_NR*smp_processor_id();
+       int type;
 
        if (vaddr < FIXADDR_START) { // FIXME
                pagefault_enable();
                return;
        }
 
-       BUG_ON(vaddr != __fix_to_virt(FIX_KMAP_BEGIN + idx));
+       type = kmap_atomic_idx();
+#ifdef CONFIG_DEBUG_HIGHMEM
+       {
+               int idx = type + KM_TYPE_NR * smp_processor_id();
 
-       /*
-        * force other mappings to Oops if they'll try to access
-        * this pte without first remap it
-        */
-       pte_clear(&init_mm, vaddr, kmap_pte-idx);
-       local_flush_tlb_one(vaddr);
-#endif
+               BUG_ON(vaddr != __fix_to_virt(FIX_KMAP_BEGIN + idx));
 
+               /*
+                * force other mappings to Oops if they'll try to access
+                * this pte without first remap it
+                */
+               pte_clear(&init_mm, vaddr, kmap_pte-idx);
+               local_flush_tlb_one(vaddr);
+       }
+#endif
+       kmap_atomic_idx_pop();
        pagefault_enable();
 }
 EXPORT_SYMBOL(__kunmap_atomic);
@@ -93,14 +98,14 @@ EXPORT_SYMBOL(__kunmap_atomic);
  * This is the same as kmap_atomic() but can map memory that doesn't
  * have a struct page associated with it.
  */
-void *kmap_atomic_pfn(unsigned long pfn, enum km_type type)
+void *kmap_atomic_pfn(unsigned long pfn)
 {
-       enum fixed_addresses idx;
        unsigned long vaddr;
+       int idx, type;
 
        pagefault_disable();
 
-       debug_kmap_atomic(type);
+       type = kmap_atomic_idx_push();
        idx = type + KM_TYPE_NR*smp_processor_id();
        vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
        set_pte(kmap_pte-idx, pfn_pte(pfn, PAGE_KERNEL));
@@ -109,7 +114,7 @@ void *kmap_atomic_pfn(unsigned long pfn, enum km_type type)
        return (void*) vaddr;
 }
 
-struct page *__kmap_atomic_to_page(void *ptr)
+struct page *kmap_atomic_to_page(void *ptr)
 {
        unsigned long idx, vaddr = (unsigned long)ptr;
        pte_t *pte;