diff options
author | Paul Mackerras <paulus@samba.org> | 2005-11-19 20:17:32 +1100 |
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committer | Paul Mackerras <paulus@samba.org> | 2005-11-19 20:17:32 +1100 |
commit | 047ea7846565917c4a666635fa1fa4b5c587cd55 (patch) | |
tree | 409c8f6ddd1f145fb364a8d6f813febd0c94d06b /include/asm-powerpc/pgalloc.h | |
parent | 800fc3eeb0eed3bf98d621c0da24d68cabcf6526 (diff) | |
download | kernel_samsung_smdk4412-047ea7846565917c4a666635fa1fa4b5c587cd55.zip kernel_samsung_smdk4412-047ea7846565917c4a666635fa1fa4b5c587cd55.tar.gz kernel_samsung_smdk4412-047ea7846565917c4a666635fa1fa4b5c587cd55.tar.bz2 |
powerpc: Trivially merge several headers from asm-ppc64 to asm-powerpc
For these, I have just done the lame-o merge where the file ends up
looking like:
#ifndef CONFIG_PPC64
#include <asm-ppc/foo.h>
#else
... contents from asm-ppc64/foo.h
#endif
so nothing has changed, really, except that we reduce include/asm-ppc64
a bit more.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-powerpc/pgalloc.h')
-rw-r--r-- | include/asm-powerpc/pgalloc.h | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/include/asm-powerpc/pgalloc.h b/include/asm-powerpc/pgalloc.h new file mode 100644 index 0000000..bfc2113 --- /dev/null +++ b/include/asm-powerpc/pgalloc.h @@ -0,0 +1,156 @@ +#ifndef _ASM_POWERPC_PGALLOC_H +#define _ASM_POWERPC_PGALLOC_H + +#ifndef CONFIG_PPC64 +#include <asm-ppc/pgalloc.h> +#else + +#include <linux/mm.h> +#include <linux/slab.h> +#include <linux/cpumask.h> +#include <linux/percpu.h> + +extern kmem_cache_t *pgtable_cache[]; + +#ifdef CONFIG_PPC_64K_PAGES +#define PTE_CACHE_NUM 0 +#define PMD_CACHE_NUM 1 +#define PGD_CACHE_NUM 2 +#else +#define PTE_CACHE_NUM 0 +#define PMD_CACHE_NUM 1 +#define PUD_CACHE_NUM 1 +#define PGD_CACHE_NUM 0 +#endif + +/* + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +static inline pgd_t *pgd_alloc(struct mm_struct *mm) +{ + return kmem_cache_alloc(pgtable_cache[PGD_CACHE_NUM], GFP_KERNEL); +} + +static inline void pgd_free(pgd_t *pgd) +{ + kmem_cache_free(pgtable_cache[PGD_CACHE_NUM], pgd); +} + +#ifndef CONFIG_PPC_64K_PAGES + +#define pgd_populate(MM, PGD, PUD) pgd_set(PGD, PUD) + +static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) +{ + return kmem_cache_alloc(pgtable_cache[PUD_CACHE_NUM], + GFP_KERNEL|__GFP_REPEAT); +} + +static inline void pud_free(pud_t *pud) +{ + kmem_cache_free(pgtable_cache[PUD_CACHE_NUM], pud); +} + +static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) +{ + pud_set(pud, (unsigned long)pmd); +} + +#define pmd_populate(mm, pmd, pte_page) \ + pmd_populate_kernel(mm, pmd, page_address(pte_page)) +#define pmd_populate_kernel(mm, pmd, pte) pmd_set(pmd, (unsigned long)(pte)) + + +#else /* CONFIG_PPC_64K_PAGES */ + +#define pud_populate(mm, pud, pmd) pud_set(pud, (unsigned long)pmd) + +static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, + pte_t *pte) +{ + pmd_set(pmd, (unsigned long)pte); +} + +#define pmd_populate(mm, pmd, pte_page) \ + pmd_populate_kernel(mm, pmd, page_address(pte_page)) + +#endif /* CONFIG_PPC_64K_PAGES */ + +static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr) +{ + return kmem_cache_alloc(pgtable_cache[PMD_CACHE_NUM], + GFP_KERNEL|__GFP_REPEAT); +} + +static inline void pmd_free(pmd_t *pmd) +{ + kmem_cache_free(pgtable_cache[PMD_CACHE_NUM], pmd); +} + +static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, + unsigned long address) +{ + return kmem_cache_alloc(pgtable_cache[PTE_CACHE_NUM], + GFP_KERNEL|__GFP_REPEAT); +} + +static inline struct page *pte_alloc_one(struct mm_struct *mm, + unsigned long address) +{ + return virt_to_page(pte_alloc_one_kernel(mm, address)); +} + +static inline void pte_free_kernel(pte_t *pte) +{ + kmem_cache_free(pgtable_cache[PTE_CACHE_NUM], pte); +} + +static inline void pte_free(struct page *ptepage) +{ + pte_free_kernel(page_address(ptepage)); +} + +#define PGF_CACHENUM_MASK 0xf + +typedef struct pgtable_free { + unsigned long val; +} pgtable_free_t; + +static inline pgtable_free_t pgtable_free_cache(void *p, int cachenum, + unsigned long mask) +{ + BUG_ON(cachenum > PGF_CACHENUM_MASK); + + return (pgtable_free_t){.val = ((unsigned long) p & ~mask) | cachenum}; +} + +static inline void pgtable_free(pgtable_free_t pgf) +{ + void *p = (void *)(pgf.val & ~PGF_CACHENUM_MASK); + int cachenum = pgf.val & PGF_CACHENUM_MASK; + + kmem_cache_free(pgtable_cache[cachenum], p); +} + +extern void pgtable_free_tlb(struct mmu_gather *tlb, pgtable_free_t pgf); + +#define __pte_free_tlb(tlb, ptepage) \ + pgtable_free_tlb(tlb, pgtable_free_cache(page_address(ptepage), \ + PTE_CACHE_NUM, PTE_TABLE_SIZE-1)) +#define __pmd_free_tlb(tlb, pmd) \ + pgtable_free_tlb(tlb, pgtable_free_cache(pmd, \ + PMD_CACHE_NUM, PMD_TABLE_SIZE-1)) +#ifndef CONFIG_PPC_64K_PAGES +#define __pud_free_tlb(tlb, pmd) \ + pgtable_free_tlb(tlb, pgtable_free_cache(pud, \ + PUD_CACHE_NUM, PUD_TABLE_SIZE-1)) +#endif /* CONFIG_PPC_64K_PAGES */ + +#define check_pgt_cache() do { } while (0) + +#endif /* CONFIG_PPC64 */ +#endif /* _ASM_POWERPC_PGALLOC_H */ |