avr32: Use a quicklist for PTE allocation as well

Using a quicklist to allocate PTEs might be slightly faster than using
the page allocator directly since we might avoid zeroing the page
after each allocation.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>

2 files changed, 16 insertions, 14 deletions

diff --git a/include/asm-avr32/pgalloc.h b/include/asm-avr32/pgalloc.h
index a291f59659cf..640821323943 100644
--- a/include/asm-avr32/pgalloc.h
+++ b/include/asm-avr32/pgalloc.h
@@ -13,6 +13,7 @@
 #include <asm/pgtable.h>
 
 #define QUICK_PGD       0       /* Preserve kernel mappings over free */
+#define QUICK_PT        1       /* Zero on free */
 
 static inline void pmd_populate_kernel(struct mm_struct *mm,
                                        pmd_t *pmd, pte_t *pte)
@@ -52,34 +53,34 @@ static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
 static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
                                           unsigned long address)
 {
-        pte_t *pte;
-
-        pte = (pte_t *)get_zeroed_page(GFP_KERNEL | __GFP_REPEAT);
-
-        return pte;
+        return quicklist_alloc(QUICK_PT, GFP_KERNEL | __GFP_REPEAT, NULL);
 }
 
-static inline struct page *pte_alloc_one(struct mm_struct *mm,
+static inline pgtable_t pte_alloc_one(struct mm_struct *mm,
                                          unsigned long address)
 {
-        struct page *pte;
+        struct page *page;
+        void *pg;
 
-        pte = alloc_page(GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO);
-        if (!pte)
+        pg = quicklist_alloc(QUICK_PT, GFP_KERNEL | __GFP_REPEAT, NULL);
+        if (!pg)
                 return NULL;
-        pgtable_page_ctor(pte);
-        return pte;
+
+        page = virt_to_page(pg);
+        pgtable_page_ctor(page);
+
+        return page;
 }
 
 static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
 {
-        free_page((unsigned long)pte);
+        quicklist_free(QUICK_PT, NULL, pte);
 }
 
 static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
 {
         pgtable_page_dtor(pte);
-        __free_page(pte);
+        quicklist_free_page(QUICK_PT, NULL, pte);
 }
 
 #define __pte_free_tlb(tlb,pte)                         \
@@ -91,6 +92,7 @@ do {							\
 static inline void check_pgt_cache(void)
 {
         quicklist_trim(QUICK_PGD, NULL, 25, 16);
+        quicklist_trim(QUICK_PT, NULL, 25, 16);
 }
 
 #endif /* __ASM_AVR32_PGALLOC_H */
diff --git a/mm/Kconfig b/mm/Kconfig
index 3aa819d628c1..60b261952783 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -199,7 +199,7 @@ config BOUNCE
 config NR_QUICK
         int
         depends on QUICKLIST
-        default "2" if SUPERH
+        default "2" if SUPERH || AVR32
         default "1"
 
 config VIRT_TO_BUS