vserver 1.9.3

[linux-2.6.git] / include / asm-ppc64 / pgalloc.h

diff --git a/include/asm-ppc64/pgalloc.h b/include/asm-ppc64/pgalloc.h
index 251bbd9..dd717c2 100644 (file)
--- a/include/asm-ppc64/pgalloc.h
+++ b/include/asm-ppc64/pgalloc.h
@@ -7,6 +7,7 @@
 #include <linux/percpu.h>
 #include <asm/processor.h>
 #include <asm/tlb.h>
+#include <asm/page.h>
 
 extern kmem_cache_t *zero_cache;
 
@@ -48,28 +49,43 @@ pmd_free(pmd_t *pmd)
        pmd_populate_kernel(mm, pmd, page_address(pte_page))
 
 static inline pte_t *
-pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr)
+pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
 {
-       return kmem_cache_alloc(zero_cache, GFP_KERNEL|__GFP_REPEAT);
+       pte_t *pte;
+       pte = kmem_cache_alloc(zero_cache, GFP_KERNEL|__GFP_REPEAT);
+       if (pte) {
+               struct page *ptepage = virt_to_page(pte);
+               ptepage->mapping = (void *) mm;
+               ptepage->index = address & PMD_MASK;
+       }
+       return pte;
 }
 
 static inline struct page *
 pte_alloc_one(struct mm_struct *mm, unsigned long address)
 {
-       pte_t *pte = pte_alloc_one_kernel(mm, address);
-
-       if (pte)
-               return virt_to_page(pte);
-
+       pte_t *pte;
+       pte = kmem_cache_alloc(zero_cache, GFP_KERNEL|__GFP_REPEAT);
+       if (pte) {
+               struct page *ptepage = virt_to_page(pte);
+               ptepage->mapping = (void *) mm;
+               ptepage->index = address & PMD_MASK;
+               return ptepage;
+       }
        return NULL;
 }
                
 static inline void pte_free_kernel(pte_t *pte)
 {
+       virt_to_page(pte)->mapping = NULL;
        kmem_cache_free(zero_cache, pte);
 }
 
-#define pte_free(pte_page)     pte_free_kernel(page_address(pte_page))
+static inline void pte_free(struct page *ptepage)
+{
+       ptepage->mapping = NULL;
+       kmem_cache_free(zero_cache, page_address(ptepage));
+}
 
 struct pte_freelist_batch
 {
@@ -86,33 +102,7 @@ extern void pte_free_submit(struct pte_freelist_batch *batch);
 
 DECLARE_PER_CPU(struct pte_freelist_batch *, pte_freelist_cur);
 
-static inline void __pte_free_tlb(struct mmu_gather *tlb, struct page *ptepage)
-{
-       /* This is safe as we are holding page_table_lock */
-        cpumask_t local_cpumask = cpumask_of_cpu(smp_processor_id());
-       struct pte_freelist_batch **batchp = &__get_cpu_var(pte_freelist_cur);
-
-       if (atomic_read(&tlb->mm->mm_users) < 2 ||
-           cpus_equal(tlb->mm->cpu_vm_mask, local_cpumask)) {
-               pte_free(ptepage);
-               return;
-       }
-
-       if (*batchp == NULL) {
-               *batchp = (struct pte_freelist_batch *)__get_free_page(GFP_ATOMIC);
-               if (*batchp == NULL) {
-                       pte_free_now(ptepage);
-                       return;
-               }
-               (*batchp)->index = 0;
-       }
-       (*batchp)->pages[(*batchp)->index++] = ptepage;
-       if ((*batchp)->index == PTE_FREELIST_SIZE) {
-               pte_free_submit(*batchp);
-               *batchp = NULL;
-       }
-}
-
+void __pte_free_tlb(struct mmu_gather *tlb, struct page *ptepage);
 #define __pmd_free_tlb(tlb, pmd)       __pte_free_tlb(tlb, virt_to_page(pmd))
 
 #define check_pgt_cache()      do { } while (0)