From: Anshuman Khandual <anshuman.khandual@xxxxxxx> Subject: mm/hugetlb: define a generic fallback for is_hugepage_only_range() There are multiple similar definitions for is_hugepage_only_range() on various platforms. Lets just add it's generic fallback definition for platforms that do not override. This help reduce code duplication. Link: http://lkml.kernel.org/r/1588907271-11920-3-git-send-email-anshuman.khandual@xxxxxxx Signed-off-by: Anshuman Khandual <anshuman.khandual@xxxxxxx> Acked-by: Mike Kravetz <mike.kravetz@xxxxxxxxxx> Cc: Russell King <linux@xxxxxxxxxxxxxxx> Cc: Catalin Marinas <catalin.marinas@xxxxxxx> Cc: Will Deacon <will@xxxxxxxxxx> Cc: Tony Luck <tony.luck@xxxxxxxxx> Cc: Fenghua Yu <fenghua.yu@xxxxxxxxx> Cc: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx> Cc: "James E.J. Bottomley" <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx> Cc: Helge Deller <deller@xxxxxx> Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> Cc: Paul Mackerras <paulus@xxxxxxxxx> Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx> Cc: Paul Walmsley <paul.walmsley@xxxxxxxxxx> Cc: Palmer Dabbelt <palmer@xxxxxxxxxxx> Cc: Heiko Carstens <heiko.carstens@xxxxxxxxxx> Cc: Vasily Gorbik <gor@xxxxxxxxxxxxx> Cc: Christian Borntraeger <borntraeger@xxxxxxxxxx> Cc: Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx> Cc: Rich Felker <dalias@xxxxxxxx> Cc: "David S. Miller" <davem@xxxxxxxxxxxxx> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Cc: Ingo Molnar <mingo@xxxxxxxxxx> Cc: Borislav Petkov <bp@xxxxxxxxx> Cc: "H. Peter Anvin" <hpa@xxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- arch/arm/include/asm/hugetlb.h | 6 ------ arch/arm64/include/asm/hugetlb.h | 6 ------ arch/ia64/include/asm/hugetlb.h | 1 + arch/mips/include/asm/hugetlb.h | 7 ------- arch/parisc/include/asm/hugetlb.h | 6 ------ arch/powerpc/include/asm/hugetlb.h | 1 + arch/riscv/include/asm/hugetlb.h | 6 ------ arch/s390/include/asm/hugetlb.h | 7 ------- arch/sh/include/asm/hugetlb.h | 6 ------ arch/sparc/include/asm/hugetlb.h | 6 ------ arch/x86/include/asm/hugetlb.h | 6 ------ include/linux/hugetlb.h | 9 +++++++++ 12 files changed, 11 insertions(+), 56 deletions(-) --- a/arch/arm64/include/asm/hugetlb.h~mm-hugetlb-define-a-generic-fallback-for-is_hugepage_only_range +++ a/arch/arm64/include/asm/hugetlb.h @@ -17,12 +17,6 @@ extern bool arch_hugetlb_migration_supported(struct hstate *h); #endif -static inline int is_hugepage_only_range(struct mm_struct *mm, - unsigned long addr, unsigned long len) -{ - return 0; -} - static inline void arch_clear_hugepage_flags(struct page *page) { clear_bit(PG_dcache_clean, &page->flags); --- a/arch/arm/include/asm/hugetlb.h~mm-hugetlb-define-a-generic-fallback-for-is_hugepage_only_range +++ a/arch/arm/include/asm/hugetlb.h @@ -14,12 +14,6 @@ #include <asm/hugetlb-3level.h> #include <asm-generic/hugetlb.h> -static inline int is_hugepage_only_range(struct mm_struct *mm, - unsigned long addr, unsigned long len) -{ - return 0; -} - static inline void arch_clear_hugepage_flags(struct page *page) { clear_bit(PG_dcache_clean, &page->flags); --- a/arch/ia64/include/asm/hugetlb.h~mm-hugetlb-define-a-generic-fallback-for-is_hugepage_only_range +++ a/arch/ia64/include/asm/hugetlb.h @@ -20,6 +20,7 @@ static inline int is_hugepage_only_range return (REGION_NUMBER(addr) == RGN_HPAGE || REGION_NUMBER((addr)+(len)-1) == RGN_HPAGE); } +#define is_hugepage_only_range is_hugepage_only_range #define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, --- a/arch/mips/include/asm/hugetlb.h~mm-hugetlb-define-a-generic-fallback-for-is_hugepage_only_range +++ a/arch/mips/include/asm/hugetlb.h @@ -11,13 +11,6 @@ #include <asm/page.h> -static inline int is_hugepage_only_range(struct mm_struct *mm, - unsigned long addr, - unsigned long len) -{ - return 0; -} - #define __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE static inline int prepare_hugepage_range(struct file *file, unsigned long addr, --- a/arch/parisc/include/asm/hugetlb.h~mm-hugetlb-define-a-generic-fallback-for-is_hugepage_only_range +++ a/arch/parisc/include/asm/hugetlb.h @@ -12,12 +12,6 @@ void set_huge_pte_at(struct mm_struct *m pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep); -static inline int is_hugepage_only_range(struct mm_struct *mm, - unsigned long addr, - unsigned long len) { - return 0; -} - /* * If the arch doesn't supply something else, assume that hugepage * size aligned regions are ok without further preparation. --- a/arch/powerpc/include/asm/hugetlb.h~mm-hugetlb-define-a-generic-fallback-for-is_hugepage_only_range +++ a/arch/powerpc/include/asm/hugetlb.h @@ -30,6 +30,7 @@ static inline int is_hugepage_only_range return slice_is_hugepage_only_range(mm, addr, len); return 0; } +#define is_hugepage_only_range is_hugepage_only_range #define __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr, --- a/arch/riscv/include/asm/hugetlb.h~mm-hugetlb-define-a-generic-fallback-for-is_hugepage_only_range +++ a/arch/riscv/include/asm/hugetlb.h @@ -5,12 +5,6 @@ #include <asm-generic/hugetlb.h> #include <asm/page.h> -static inline int is_hugepage_only_range(struct mm_struct *mm, - unsigned long addr, - unsigned long len) { - return 0; -} - static inline void arch_clear_hugepage_flags(struct page *page) { } --- a/arch/s390/include/asm/hugetlb.h~mm-hugetlb-define-a-generic-fallback-for-is_hugepage_only_range +++ a/arch/s390/include/asm/hugetlb.h @@ -21,13 +21,6 @@ pte_t huge_ptep_get(pte_t *ptep); pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep); -static inline bool is_hugepage_only_range(struct mm_struct *mm, - unsigned long addr, - unsigned long len) -{ - return false; -} - /* * If the arch doesn't supply something else, assume that hugepage * size aligned regions are ok without further preparation. --- a/arch/sh/include/asm/hugetlb.h~mm-hugetlb-define-a-generic-fallback-for-is_hugepage_only_range +++ a/arch/sh/include/asm/hugetlb.h @@ -5,12 +5,6 @@ #include <asm/cacheflush.h> #include <asm/page.h> -static inline int is_hugepage_only_range(struct mm_struct *mm, - unsigned long addr, - unsigned long len) { - return 0; -} - /* * If the arch doesn't supply something else, assume that hugepage * size aligned regions are ok without further preparation. --- a/arch/sparc/include/asm/hugetlb.h~mm-hugetlb-define-a-generic-fallback-for-is_hugepage_only_range +++ a/arch/sparc/include/asm/hugetlb.h @@ -20,12 +20,6 @@ void set_huge_pte_at(struct mm_struct *m pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep); -static inline int is_hugepage_only_range(struct mm_struct *mm, - unsigned long addr, - unsigned long len) { - return 0; -} - #define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep) --- a/arch/x86/include/asm/hugetlb.h~mm-hugetlb-define-a-generic-fallback-for-is_hugepage_only_range +++ a/arch/x86/include/asm/hugetlb.h @@ -7,12 +7,6 @@ #define hugepages_supported() boot_cpu_has(X86_FEATURE_PSE) -static inline int is_hugepage_only_range(struct mm_struct *mm, - unsigned long addr, - unsigned long len) { - return 0; -} - static inline void arch_clear_hugepage_flags(struct page *page) { } --- a/include/linux/hugetlb.h~mm-hugetlb-define-a-generic-fallback-for-is_hugepage_only_range +++ a/include/linux/hugetlb.h @@ -591,6 +591,15 @@ static inline unsigned int blocks_per_hu #include <asm/hugetlb.h> +#ifndef is_hugepage_only_range +static inline int is_hugepage_only_range(struct mm_struct *mm, + unsigned long addr, unsigned long len) +{ + return 0; +} +#define is_hugepage_only_range is_hugepage_only_range +#endif + #ifndef arch_make_huge_pte static inline pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma, struct page *page, int writable) _
