summaryrefslogtreecommitdiffstats
path: root/include/asm-avr32/pgalloc.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/asm-avr32/pgalloc.h')
-rw-r--r--include/asm-avr32/pgalloc.h68
1 files changed, 43 insertions, 25 deletions
diff --git a/include/asm-avr32/pgalloc.h b/include/asm-avr32/pgalloc.h
index 51fc1f6..6408213 100644
--- a/include/asm-avr32/pgalloc.h
+++ b/include/asm-avr32/pgalloc.h
@@ -8,65 +8,79 @@
#ifndef __ASM_AVR32_PGALLOC_H
#define __ASM_AVR32_PGALLOC_H
-#include <asm/processor.h>
-#include <linux/threads.h>
-#include <linux/slab.h>
-#include <linux/mm.h>
+#include <linux/quicklist.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
-#define pmd_populate_kernel(mm, pmd, pte) \
- set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte)))
+#define QUICK_PGD 0 /* Preserve kernel mappings over free */
+#define QUICK_PT 1 /* Zero on free */
-static __inline__ void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
+static inline void pmd_populate_kernel(struct mm_struct *mm,
+ pmd_t *pmd, pte_t *pte)
+{
+ set_pmd(pmd, __pmd((unsigned long)pte));
+}
+
+static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
pgtable_t pte)
{
- set_pmd(pmd, __pmd(_PAGE_TABLE + page_to_phys(pte)));
+ set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
}
#define pmd_pgtable(pmd) pmd_page(pmd)
+static inline void pgd_ctor(void *x)
+{
+ pgd_t *pgd = x;
+
+ memcpy(pgd + USER_PTRS_PER_PGD,
+ swapper_pg_dir + USER_PTRS_PER_PGD,
+ (PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
+}
+
/*
* Allocate and free page tables
*/
-static __inline__ pgd_t *pgd_alloc(struct mm_struct *mm)
+static inline pgd_t *pgd_alloc(struct mm_struct *mm)
{
- return kcalloc(USER_PTRS_PER_PGD, sizeof(pgd_t), GFP_KERNEL);
+ return quicklist_alloc(QUICK_PGD, GFP_KERNEL | __GFP_REPEAT, pgd_ctor);
}
static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
- kfree(pgd);
+ quicklist_free(QUICK_PGD, NULL, 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) \
@@ -75,6 +89,10 @@ do { \
tlb_remove_page((tlb), pte); \
} while (0)
-#define check_pgt_cache() do { } while(0)
+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 */
OpenPOWER on IntegriCloud