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Commit 38510754 authored by Haavard Skinnemoen's avatar Haavard Skinnemoen
Browse files

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: default avatarHaavard Skinnemoen <haavard.skinnemoen@atmel.com>
parent 5a4d5292

include/asm-avr32/pgalloc.h

+15 −13
Original line number Diff line number Diff line
@@ -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 */

mm/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -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