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author | David Gibson <david@gibson.dropbear.id.au> | 2005-06-21 17:14:44 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-06-21 18:46:15 -0700 |
commit | 63551ae0feaaa23807ebea60de1901564bbef32e (patch) | |
tree | f6f97f60f83c3e9813bdfcc6039c499997b1ea10 /include | |
parent | 1e7e5a9048b30c57ba1ddaa6cdf59b21b65cde99 (diff) | |
download | kernel_samsung_smdk4412-63551ae0feaaa23807ebea60de1901564bbef32e.zip kernel_samsung_smdk4412-63551ae0feaaa23807ebea60de1901564bbef32e.tar.gz kernel_samsung_smdk4412-63551ae0feaaa23807ebea60de1901564bbef32e.tar.bz2 |
[PATCH] Hugepage consolidation
A lot of the code in arch/*/mm/hugetlbpage.c is quite similar. This patch
attempts to consolidate a lot of the code across the arch's, putting the
combined version in mm/hugetlb.c. There are a couple of uglyish hacks in
order to covert all the hugepage archs, but the result is a very large
reduction in the total amount of code. It also means things like hugepage
lazy allocation could be implemented in one place, instead of six.
Tested, at least a little, on ppc64, i386 and x86_64.
Notes:
- this patch changes the meaning of set_huge_pte() to be more
analagous to set_pte()
- does SH4 need s special huge_ptep_get_and_clear()??
Acked-by: William Lee Irwin <wli@holomorphy.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include')
-rw-r--r-- | include/asm-i386/page.h | 1 | ||||
-rw-r--r-- | include/asm-i386/pgtable.h | 2 | ||||
-rw-r--r-- | include/asm-ia64/pgtable.h | 1 | ||||
-rw-r--r-- | include/asm-sh/page.h | 1 | ||||
-rw-r--r-- | include/asm-sh/pgtable.h | 1 | ||||
-rw-r--r-- | include/asm-sh64/page.h | 1 | ||||
-rw-r--r-- | include/asm-sh64/pgtable.h | 2 | ||||
-rw-r--r-- | include/asm-sparc64/page.h | 2 | ||||
-rw-r--r-- | include/asm-sparc64/pgtable.h | 1 | ||||
-rw-r--r-- | include/asm-x86_64/page.h | 1 | ||||
-rw-r--r-- | include/asm-x86_64/pgtable.h | 3 | ||||
-rw-r--r-- | include/linux/hugetlb.h | 40 |
12 files changed, 48 insertions, 8 deletions
diff --git a/include/asm-i386/page.h b/include/asm-i386/page.h index ed13969..41400d3 100644 --- a/include/asm-i386/page.h +++ b/include/asm-i386/page.h @@ -68,6 +68,7 @@ typedef struct { unsigned long pgprot; } pgprot_t; #define HPAGE_MASK (~(HPAGE_SIZE - 1)) #define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) #define HAVE_ARCH_HUGETLB_UNMAPPED_AREA +#define ARCH_HAS_HUGETLB_CLEAN_STALE_PGTABLE #endif #define pgd_val(x) ((x).pgd) diff --git a/include/asm-i386/pgtable.h b/include/asm-i386/pgtable.h index 8d60c2b..e9efe14 100644 --- a/include/asm-i386/pgtable.h +++ b/include/asm-i386/pgtable.h @@ -236,6 +236,7 @@ static inline pte_t pte_mkexec(pte_t pte) { (pte).pte_low |= _PAGE_USER; return static inline pte_t pte_mkdirty(pte_t pte) { (pte).pte_low |= _PAGE_DIRTY; return pte; } static inline pte_t pte_mkyoung(pte_t pte) { (pte).pte_low |= _PAGE_ACCESSED; return pte; } static inline pte_t pte_mkwrite(pte_t pte) { (pte).pte_low |= _PAGE_RW; return pte; } +static inline pte_t pte_mkhuge(pte_t pte) { (pte).pte_low |= _PAGE_PRESENT | _PAGE_PSE; return pte; } #ifdef CONFIG_X86_PAE # include <asm/pgtable-3level.h> @@ -275,7 +276,6 @@ static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, */ #define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot)) -#define mk_pte_huge(entry) ((entry).pte_low |= _PAGE_PRESENT | _PAGE_PSE) static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) { diff --git a/include/asm-ia64/pgtable.h b/include/asm-ia64/pgtable.h index fcc9c33..48586e0 100644 --- a/include/asm-ia64/pgtable.h +++ b/include/asm-ia64/pgtable.h @@ -283,6 +283,7 @@ ia64_phys_addr_valid (unsigned long addr) #define pte_mkyoung(pte) (__pte(pte_val(pte) | _PAGE_A)) #define pte_mkclean(pte) (__pte(pte_val(pte) & ~_PAGE_D)) #define pte_mkdirty(pte) (__pte(pte_val(pte) | _PAGE_D)) +#define pte_mkhuge(pte) (__pte(pte_val(pte) | _PAGE_P)) /* * Macro to a page protection value as "uncacheable". Note that "protection" is really a diff --git a/include/asm-sh/page.h b/include/asm-sh/page.h index 4c6d129..180467b 100644 --- a/include/asm-sh/page.h +++ b/include/asm-sh/page.h @@ -31,6 +31,7 @@ #define HPAGE_SIZE (1UL << HPAGE_SHIFT) #define HPAGE_MASK (~(HPAGE_SIZE-1)) #define HUGETLB_PAGE_ORDER (HPAGE_SHIFT-PAGE_SHIFT) +#define ARCH_HAS_SETCLEAR_HUGE_PTE #endif #ifdef __KERNEL__ diff --git a/include/asm-sh/pgtable.h b/include/asm-sh/pgtable.h index cd847a4..ecb9095 100644 --- a/include/asm-sh/pgtable.h +++ b/include/asm-sh/pgtable.h @@ -196,6 +196,7 @@ static inline pte_t pte_mkexec(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _ static inline pte_t pte_mkdirty(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _PAGE_DIRTY)); return pte; } static inline pte_t pte_mkyoung(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _PAGE_ACCESSED)); return pte; } static inline pte_t pte_mkwrite(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _PAGE_RW)); return pte; } +static inline pte_t pte_mkhuge(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _PAGE_SZHUGE)); return pte; } /* * Macro and implementation to make a page protection as uncachable. diff --git a/include/asm-sh64/page.h b/include/asm-sh64/page.h index e1f7f5a..d6167f1 100644 --- a/include/asm-sh64/page.h +++ b/include/asm-sh64/page.h @@ -41,6 +41,7 @@ #define HPAGE_SIZE (1UL << HPAGE_SHIFT) #define HPAGE_MASK (~(HPAGE_SIZE-1)) #define HUGETLB_PAGE_ORDER (HPAGE_SHIFT-PAGE_SHIFT) +#define ARCH_HAS_SETCLEAR_HUGE_PTE #endif #ifdef __KERNEL__ diff --git a/include/asm-sh64/pgtable.h b/include/asm-sh64/pgtable.h index 525e152..78ac6be 100644 --- a/include/asm-sh64/pgtable.h +++ b/include/asm-sh64/pgtable.h @@ -430,6 +430,8 @@ extern inline pte_t pte_mkwrite(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | extern inline pte_t pte_mkexec(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _PAGE_EXECUTE)); return pte; } extern inline pte_t pte_mkdirty(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _PAGE_DIRTY)); return pte; } extern inline pte_t pte_mkyoung(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _PAGE_ACCESSED)); return pte; } +extern inline pte_t pte_mkhuge(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _PAGE_SZHUGE)); return pte; } + /* * Conversion functions: convert a page and protection to a page entry. diff --git a/include/asm-sparc64/page.h b/include/asm-sparc64/page.h index 219ea04..b87dbbd 100644 --- a/include/asm-sparc64/page.h +++ b/include/asm-sparc64/page.h @@ -95,6 +95,8 @@ typedef unsigned long pgprot_t; #define HPAGE_SIZE (_AC(1,UL) << HPAGE_SHIFT) #define HPAGE_MASK (~(HPAGE_SIZE - 1UL)) #define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) +#define ARCH_HAS_SETCLEAR_HUGE_PTE +#define ARCH_HAS_HUGETLB_PREFAULT_HOOK #endif #define TASK_UNMAPPED_BASE (test_thread_flag(TIF_32BIT) ? \ diff --git a/include/asm-sparc64/pgtable.h b/include/asm-sparc64/pgtable.h index ae2cd5b..1ae00c5 100644 --- a/include/asm-sparc64/pgtable.h +++ b/include/asm-sparc64/pgtable.h @@ -286,6 +286,7 @@ static inline pte_t pte_modify(pte_t orig_pte, pgprot_t new_prot) #define pte_mkyoung(pte) (__pte(pte_val(pte) | _PAGE_ACCESSED | _PAGE_R)) #define pte_mkwrite(pte) (__pte(pte_val(pte) | _PAGE_WRITE)) #define pte_mkdirty(pte) (__pte(pte_val(pte) | _PAGE_MODIFIED | _PAGE_W)) +#define pte_mkhuge(pte) (__pte(pte_val(pte) | _PAGE_SZHUGE)) /* to find an entry in a page-table-directory. */ #define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1)) diff --git a/include/asm-x86_64/page.h b/include/asm-x86_64/page.h index f430480..9ce338c 100644 --- a/include/asm-x86_64/page.h +++ b/include/asm-x86_64/page.h @@ -28,6 +28,7 @@ #define HPAGE_SIZE ((1UL) << HPAGE_SHIFT) #define HPAGE_MASK (~(HPAGE_SIZE - 1)) #define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) +#define ARCH_HAS_HUGETLB_CLEAN_STALE_PGTABLE #ifdef __KERNEL__ #ifndef __ASSEMBLY__ diff --git a/include/asm-x86_64/pgtable.h b/include/asm-x86_64/pgtable.h index db2a0ef..4eec176 100644 --- a/include/asm-x86_64/pgtable.h +++ b/include/asm-x86_64/pgtable.h @@ -253,6 +253,7 @@ extern inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; extern inline int pte_write(pte_t pte) { return pte_val(pte) & _PAGE_RW; } static inline int pte_file(pte_t pte) { return pte_val(pte) & _PAGE_FILE; } +#define __LARGE_PTE (_PAGE_PSE|_PAGE_PRESENT) extern inline pte_t pte_rdprotect(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_USER)); return pte; } extern inline pte_t pte_exprotect(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_USER)); return pte; } extern inline pte_t pte_mkclean(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_DIRTY)); return pte; } @@ -263,6 +264,7 @@ extern inline pte_t pte_mkexec(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _ extern inline pte_t pte_mkdirty(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _PAGE_DIRTY)); return pte; } extern inline pte_t pte_mkyoung(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _PAGE_ACCESSED)); return pte; } extern inline pte_t pte_mkwrite(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | _PAGE_RW)); return pte; } +extern inline pte_t pte_mkhuge(pte_t pte) { set_pte(&pte, __pte(pte_val(pte) | __LARGE_PTE)); return pte; } struct vm_area_struct; @@ -290,7 +292,6 @@ static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, */ #define pgprot_noncached(prot) (__pgprot(pgprot_val(prot) | _PAGE_PCD | _PAGE_PWT)) -#define __LARGE_PTE (_PAGE_PSE|_PAGE_PRESENT) static inline int pmd_large(pmd_t pte) { return (pmd_val(pte) & __LARGE_PTE) == __LARGE_PTE; } diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h index 6af1ae4..f529d14 100644 --- a/include/linux/hugetlb.h +++ b/include/linux/hugetlb.h @@ -4,6 +4,7 @@ #ifdef CONFIG_HUGETLB_PAGE #include <linux/mempolicy.h> +#include <asm/tlbflush.h> struct ctl_table; @@ -22,12 +23,6 @@ int hugetlb_report_meminfo(char *); int hugetlb_report_node_meminfo(int, char *); int is_hugepage_mem_enough(size_t); unsigned long hugetlb_total_pages(void); -struct page *follow_huge_addr(struct mm_struct *mm, unsigned long address, - int write); -struct page *follow_huge_pmd(struct mm_struct *mm, unsigned long address, - pmd_t *pmd, int write); -int is_aligned_hugepage_range(unsigned long addr, unsigned long len); -int pmd_huge(pmd_t pmd); struct page *alloc_huge_page(void); void free_huge_page(struct page *); @@ -35,6 +30,17 @@ extern unsigned long max_huge_pages; extern const unsigned long hugetlb_zero, hugetlb_infinity; extern int sysctl_hugetlb_shm_group; +/* arch callbacks */ + +pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr); +pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr); +struct page *follow_huge_addr(struct mm_struct *mm, unsigned long address, + int write); +struct page *follow_huge_pmd(struct mm_struct *mm, unsigned long address, + pmd_t *pmd, int write); +int is_aligned_hugepage_range(unsigned long addr, unsigned long len); +int pmd_huge(pmd_t pmd); + #ifndef ARCH_HAS_HUGEPAGE_ONLY_RANGE #define is_hugepage_only_range(mm, addr, len) 0 #define hugetlb_free_pgd_range(tlb, addr, end, floor, ceiling) \ @@ -48,6 +54,28 @@ extern int sysctl_hugetlb_shm_group; int prepare_hugepage_range(unsigned long addr, unsigned long len); #endif +#ifndef ARCH_HAS_SETCLEAR_HUGE_PTE +#define set_huge_pte_at(mm, addr, ptep, pte) set_pte_at(mm, addr, ptep, pte) +#define huge_ptep_get_and_clear(mm, addr, ptep) ptep_get_and_clear(mm, addr, ptep) +#else +void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, + pte_t *ptep, pte_t pte); +pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, + pte_t *ptep); +#endif + +#ifndef ARCH_HAS_HUGETLB_PREFAULT_HOOK +#define hugetlb_prefault_arch_hook(mm) do { } while (0) +#else +void hugetlb_prefault_arch_hook(struct mm_struct *mm); +#endif + +#ifndef ARCH_HAS_HUGETLB_CLEAN_STALE_PGTABLE +#define hugetlb_clean_stale_pgtable(pte) BUG() +#else +void hugetlb_clean_stale_pgtable(pte_t *pte); +#endif + #else /* !CONFIG_HUGETLB_PAGE */ static inline int is_vm_hugetlb_page(struct vm_area_struct *vma) |