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mm/hugetlb: define a generic fallback for is_hugepage_only_range()

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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.

Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Rich Felker <dalias@libc.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Link: http://lkml.kernel.org/r/1588907271-11920-3-git-send-email-anshuman.khandual@arm.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Anshuman Khandual 2020-06-03 16:01:01 -07:00 committed by Linus Torvalds
parent be51e3fde5
commit b0eae98c66
12 changed files with 11 additions and 56 deletions
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6
arch/arm/include/asm/hugetlb.h
View File

@ -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);

6
arch/arm64/include/asm/hugetlb.h
View File

@ -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);

1
arch/ia64/include/asm/hugetlb.h
View File

@ -20,6 +20,7 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
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,

7
arch/mips/include/asm/hugetlb.h
View File

@ -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,

6
arch/parisc/include/asm/hugetlb.h
View File

@ -12,12 +12,6 @@ void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
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.

1
arch/powerpc/include/asm/hugetlb.h
View File

@ -30,6 +30,7 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
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,

6
arch/riscv/include/asm/hugetlb.h
View File

@ -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)
{
}

7
arch/s390/include/asm/hugetlb.h
View File

@ -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.

6
arch/sh/include/asm/hugetlb.h
View File

@ -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.

6
arch/sparc/include/asm/hugetlb.h
View File

@ -20,12 +20,6 @@ void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
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)

6
arch/x86/include/asm/hugetlb.h
View File

@ -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)
{
}

9
include/linux/hugetlb.h
View File

@ -591,6 +591,15 @@ static inline unsigned int blocks_per_huge_page(struct hstate *h)
#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)