forked from Minki/linux
powerpc: Move the pte free routines from common header
Acked-by: Paul Mackerras <paulus@samba.org> This patch moves the common code to 32/64 bit headers and also duplicate 4K_PAGES and 64K_PAGES section. We will later change the 64 bit 64K_PAGES version to support smaller PTE fragments. The patch doesn't introduce any functional changes. Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Aneesh Kumar K.V
Benjamin Herrenschmidt
parent
419df06eea
commit
d614bb0412
@ -37,6 +37,17 @@ extern void pgd_free(struct mm_struct *mm, pgd_t *pgd);
|
||||
extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr);
|
||||
extern pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long addr);
|
||||
|
||||
static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
|
||||
{
|
||||
free_page((unsigned long)pte);
|
||||
}
|
||||
|
||||
static inline void pte_free(struct mm_struct *mm, pgtable_t ptepage)
|
||||
{
|
||||
pgtable_page_dtor(ptepage);
|
||||
__free_page(ptepage);
|
||||
}
|
||||
|
||||
static inline void pgtable_free(void *table, unsigned index_size)
|
||||
{
|
||||
BUG_ON(index_size); /* 32-bit doesn't use this */
|
||||
@ -45,4 +56,38 @@ static inline void pgtable_free(void *table, unsigned index_size)
|
||||
|
||||
#define check_pgt_cache() do { } while (0)
|
||||
|
||||
#ifdef CONFIG_SMP
|
||||
static inline void pgtable_free_tlb(struct mmu_gather *tlb,
|
||||
void *table, int shift)
|
||||
{
|
||||
unsigned long pgf = (unsigned long)table;
|
||||
BUG_ON(shift > MAX_PGTABLE_INDEX_SIZE);
|
||||
pgf |= shift;
|
||||
tlb_remove_table(tlb, (void *)pgf);
|
||||
}
|
||||
|
||||
static inline void __tlb_remove_table(void *_table)
|
||||
{
|
||||
void *table = (void *)((unsigned long)_table & ~MAX_PGTABLE_INDEX_SIZE);
|
||||
unsigned shift = (unsigned long)_table & MAX_PGTABLE_INDEX_SIZE;
|
||||
|
||||
pgtable_free(table, shift);
|
||||
}
|
||||
#else
|
||||
static inline void pgtable_free_tlb(struct mmu_gather *tlb,
|
||||
void *table, int shift)
|
||||
{
|
||||
pgtable_free(table, shift);
|
||||
}
|
||||
#endif
|
||||
|
||||
static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t table,
|
||||
unsigned long address)
|
||||
{
|
||||
struct page *page = page_address(table);
|
||||
|
||||
tlb_flush_pgtable(tlb, address);
|
||||
pgtable_page_dtor(page);
|
||||
pgtable_free_tlb(tlb, page, 0);
|
||||
}
|
||||
#endif /* _ASM_POWERPC_PGALLOC_32_H */
|
||||
|
||||
@ -75,8 +75,83 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
|
||||
#define pmd_populate_kernel(mm, pmd, pte) pmd_set(pmd, (unsigned long)(pte))
|
||||
#define pmd_pgtable(pmd) pmd_page(pmd)
|
||||
|
||||
static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
|
||||
unsigned long address)
|
||||
{
|
||||
return (pte_t *)__get_free_page(GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO);
|
||||
}
|
||||
|
||||
#else /* CONFIG_PPC_64K_PAGES */
|
||||
static inline pgtable_t pte_alloc_one(struct mm_struct *mm,
|
||||
unsigned long address)
|
||||
{
|
||||
struct page *page;
|
||||
pte_t *pte;
|
||||
|
||||
pte = pte_alloc_one_kernel(mm, address);
|
||||
if (!pte)
|
||||
return NULL;
|
||||
page = virt_to_page(pte);
|
||||
pgtable_page_ctor(page);
|
||||
return page;
|
||||
}
|
||||
|
||||
static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
|
||||
{
|
||||
free_page((unsigned long)pte);
|
||||
}
|
||||
|
||||
static inline void pte_free(struct mm_struct *mm, pgtable_t ptepage)
|
||||
{
|
||||
pgtable_page_dtor(ptepage);
|
||||
__free_page(ptepage);
|
||||
}
|
||||
|
||||
static inline void pgtable_free(void *table, unsigned index_size)
|
||||
{
|
||||
if (!index_size)
|
||||
free_page((unsigned long)table);
|
||||
else {
|
||||
BUG_ON(index_size > MAX_PGTABLE_INDEX_SIZE);
|
||||
kmem_cache_free(PGT_CACHE(index_size), table);
|
||||
}
|
||||
}
|
||||
|
||||
#ifdef CONFIG_SMP
|
||||
static inline void pgtable_free_tlb(struct mmu_gather *tlb,
|
||||
void *table, int shift)
|
||||
{
|
||||
unsigned long pgf = (unsigned long)table;
|
||||
BUG_ON(shift > MAX_PGTABLE_INDEX_SIZE);
|
||||
pgf |= shift;
|
||||
tlb_remove_table(tlb, (void *)pgf);
|
||||
}
|
||||
|
||||
static inline void __tlb_remove_table(void *_table)
|
||||
{
|
||||
void *table = (void *)((unsigned long)_table & ~MAX_PGTABLE_INDEX_SIZE);
|
||||
unsigned shift = (unsigned long)_table & MAX_PGTABLE_INDEX_SIZE;
|
||||
|
||||
pgtable_free(table, shift);
|
||||
}
|
||||
#else /* !CONFIG_SMP */
|
||||
static inline void pgtable_free_tlb(struct mmu_gather *tlb,
|
||||
void *table, int shift)
|
||||
{
|
||||
pgtable_free(table, shift);
|
||||
}
|
||||
#endif /* CONFIG_SMP */
|
||||
|
||||
static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t table,
|
||||
unsigned long address)
|
||||
{
|
||||
struct page *page = page_address(table);
|
||||
|
||||
tlb_flush_pgtable(tlb, address);
|
||||
pgtable_page_dtor(page);
|
||||
pgtable_free_tlb(tlb, page, 0);
|
||||
}
|
||||
|
||||
#else /* if CONFIG_PPC_64K_PAGES */
|
||||
|
||||
#define pud_populate(mm, pud, pmd) pud_set(pud, (unsigned long)pmd)
|
||||
|
||||
@ -86,9 +161,92 @@ static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
|
||||
pmd_set(pmd, (unsigned long)pte);
|
||||
}
|
||||
|
||||
#define pmd_populate(mm, pmd, pte_page) \
|
||||
pmd_populate_kernel(mm, pmd, page_address(pte_page))
|
||||
#define pmd_pgtable(pmd) pmd_page(pmd)
|
||||
static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
|
||||
pgtable_t pte_page)
|
||||
{
|
||||
pmd_populate_kernel(mm, pmd, page_address(pte_page));
|
||||
}
|
||||
|
||||
static inline pgtable_t pmd_pgtable(pmd_t pmd)
|
||||
{
|
||||
return pmd_page(pmd);
|
||||
}
|
||||
|
||||
static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
|
||||
unsigned long address)
|
||||
{
|
||||
return (pte_t *)__get_free_page(GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO);
|
||||
}
|
||||
|
||||
static inline pgtable_t pte_alloc_one(struct mm_struct *mm,
|
||||
unsigned long address)
|
||||
{
|
||||
struct page *page;
|
||||
pte_t *pte;
|
||||
|
||||
pte = pte_alloc_one_kernel(mm, address);
|
||||
if (!pte)
|
||||
return NULL;
|
||||
page = virt_to_page(pte);
|
||||
pgtable_page_ctor(page);
|
||||
return page;
|
||||
}
|
||||
|
||||
static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
|
||||
{
|
||||
free_page((unsigned long)pte);
|
||||
}
|
||||
|
||||
static inline void pte_free(struct mm_struct *mm, pgtable_t ptepage)
|
||||
{
|
||||
pgtable_page_dtor(ptepage);
|
||||
__free_page(ptepage);
|
||||
}
|
||||
|
||||
static inline void pgtable_free(void *table, unsigned index_size)
|
||||
{
|
||||
if (!index_size)
|
||||
free_page((unsigned long)table);
|
||||
else {
|
||||
BUG_ON(index_size > MAX_PGTABLE_INDEX_SIZE);
|
||||
kmem_cache_free(PGT_CACHE(index_size), table);
|
||||
}
|
||||
}
|
||||
|
||||
#ifdef CONFIG_SMP
|
||||
static inline void pgtable_free_tlb(struct mmu_gather *tlb,
|
||||
void *table, int shift)
|
||||
{
|
||||
unsigned long pgf = (unsigned long)table;
|
||||
BUG_ON(shift > MAX_PGTABLE_INDEX_SIZE);
|
||||
pgf |= shift;
|
||||
tlb_remove_table(tlb, (void *)pgf);
|
||||
}
|
||||
|
||||
static inline void __tlb_remove_table(void *_table)
|
||||
{
|
||||
void *table = (void *)((unsigned long)_table & ~MAX_PGTABLE_INDEX_SIZE);
|
||||
unsigned shift = (unsigned long)_table & MAX_PGTABLE_INDEX_SIZE;
|
||||
|
||||
pgtable_free(table, shift);
|
||||
}
|
||||
#else /* !CONFIG_SMP */
|
||||
static inline void pgtable_free_tlb(struct mmu_gather *tlb,
|
||||
void *table, int shift)
|
||||
{
|
||||
pgtable_free(table, shift);
|
||||
}
|
||||
#endif /* CONFIG_SMP */
|
||||
|
||||
static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t table,
|
||||
unsigned long address)
|
||||
{
|
||||
struct page *page = page_address(table);
|
||||
|
||||
tlb_flush_pgtable(tlb, address);
|
||||
pgtable_page_dtor(page);
|
||||
pgtable_free_tlb(tlb, page, 0);
|
||||
}
|
||||
|
||||
#endif /* CONFIG_PPC_64K_PAGES */
|
||||
|
||||
@ -103,35 +261,6 @@ static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
|
||||
kmem_cache_free(PGT_CACHE(PMD_INDEX_SIZE), pmd);
|
||||
}
|
||||
|
||||
static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
|
||||
unsigned long address)
|
||||
{
|
||||
return (pte_t *)__get_free_page(GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO);
|
||||
}
|
||||
|
||||
static inline pgtable_t pte_alloc_one(struct mm_struct *mm,
|
||||
unsigned long address)
|
||||
{
|
||||
struct page *page;
|
||||
pte_t *pte;
|
||||
|
||||
pte = pte_alloc_one_kernel(mm, address);
|
||||
if (!pte)
|
||||
return NULL;
|
||||
page = virt_to_page(pte);
|
||||
pgtable_page_ctor(page);
|
||||
return page;
|
||||
}
|
||||
|
||||
static inline void pgtable_free(void *table, unsigned index_size)
|
||||
{
|
||||
if (!index_size)
|
||||
free_page((unsigned long)table);
|
||||
else {
|
||||
BUG_ON(index_size > MAX_PGTABLE_INDEX_SIZE);
|
||||
kmem_cache_free(PGT_CACHE(index_size), table);
|
||||
}
|
||||
}
|
||||
|
||||
#define __pmd_free_tlb(tlb, pmd, addr) \
|
||||
pgtable_free_tlb(tlb, pmd, PMD_INDEX_SIZE)
|
||||
|
||||
@ -3,6 +3,7 @@
|
||||
#ifdef __KERNEL__
|
||||
|
||||
#include <linux/mm.h>
|
||||
#include <asm-generic/tlb.h>
|
||||
|
||||
#ifdef CONFIG_PPC_BOOK3E
|
||||
extern void tlb_flush_pgtable(struct mmu_gather *tlb, unsigned long address);
|
||||
@ -13,56 +14,11 @@ static inline void tlb_flush_pgtable(struct mmu_gather *tlb,
|
||||
}
|
||||
#endif /* !CONFIG_PPC_BOOK3E */
|
||||
|
||||
static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
|
||||
{
|
||||
free_page((unsigned long)pte);
|
||||
}
|
||||
|
||||
static inline void pte_free(struct mm_struct *mm, pgtable_t ptepage)
|
||||
{
|
||||
pgtable_page_dtor(ptepage);
|
||||
__free_page(ptepage);
|
||||
}
|
||||
|
||||
#ifdef CONFIG_PPC64
|
||||
#include <asm/pgalloc-64.h>
|
||||
#else
|
||||
#include <asm/pgalloc-32.h>
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_SMP
|
||||
struct mmu_gather;
|
||||
extern void tlb_remove_table(struct mmu_gather *, void *);
|
||||
|
||||
static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, int shift)
|
||||
{
|
||||
unsigned long pgf = (unsigned long)table;
|
||||
BUG_ON(shift > MAX_PGTABLE_INDEX_SIZE);
|
||||
pgf |= shift;
|
||||
tlb_remove_table(tlb, (void *)pgf);
|
||||
}
|
||||
|
||||
static inline void __tlb_remove_table(void *_table)
|
||||
{
|
||||
void *table = (void *)((unsigned long)_table & ~MAX_PGTABLE_INDEX_SIZE);
|
||||
unsigned shift = (unsigned long)_table & MAX_PGTABLE_INDEX_SIZE;
|
||||
|
||||
pgtable_free(table, shift);
|
||||
}
|
||||
#else /* CONFIG_SMP */
|
||||
static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, unsigned shift)
|
||||
{
|
||||
pgtable_free(table, shift);
|
||||
}
|
||||
#endif /* !CONFIG_SMP */
|
||||
|
||||
static inline void __pte_free_tlb(struct mmu_gather *tlb, struct page *ptepage,
|
||||
unsigned long address)
|
||||
{
|
||||
tlb_flush_pgtable(tlb, address);
|
||||
pgtable_page_dtor(ptepage);
|
||||
pgtable_free_tlb(tlb, page_address(ptepage), 0);
|
||||
}
|
||||
|
||||
#endif /* __KERNEL__ */
|
||||
#endif /* _ASM_POWERPC_PGALLOC_H */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user