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authorHaavard Skinnemoen <haavard.skinnemoen@atmel.com>2008-01-14 23:35:32 +0100
committerHaavard Skinnemoen <haavard.skinnemoen@atmel.com>2008-07-02 11:01:29 +0200
commit38510754a50192a072210e24fdc4ae65592182f0 (patch)
treef14de78921e4e6a5f56aee93d5ba921c57c2a82f
parent5a4d5292779b6163aa41e594a56307e442fbe73c (diff)
downloadop-kernel-dev-38510754a50192a072210e24fdc4ae65592182f0.zip
op-kernel-dev-38510754a50192a072210e24fdc4ae65592182f0.tar.gz
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>
-rw-r--r--include/asm-avr32/pgalloc.h28
-rw-r--r--mm/Kconfig2
2 files changed, 16 insertions, 14 deletions
diff --git a/include/asm-avr32/pgalloc.h b/include/asm-avr32/pgalloc.h
index a291f59..6408213 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 3aa819d..60b2619 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
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