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authorMike Rapoport <rppt@linux.ibm.com>2019-09-23 15:35:31 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-09-24 15:54:09 -0700
commit782de70c42930baae55234f3df0dc90774924447 (patch)
tree3381e20d3c3a51631eb0f8fac3d6bfe87a61d894 /arch
parent1b9a9d8564cbc49e1e5529460ca70bf7353aa4d1 (diff)
downloadlinux-782de70c42930baae55234f3df0dc90774924447.tar.gz
mm: consolidate pgtable_cache_init() and pgd_cache_init()
Both pgtable_cache_init() and pgd_cache_init() are used to initialize kmem cache for page table allocations on several architectures that do not use PAGE_SIZE tables for one or more levels of the page table hierarchy. Most architectures do not implement these functions and use __weak default NOP implementation of pgd_cache_init(). Since there is no such default for pgtable_cache_init(), its empty stub is duplicated among most architectures. Rename the definitions of pgd_cache_init() to pgtable_cache_init() and drop empty stubs of pgtable_cache_init(). Link: http://lkml.kernel.org/r/1566457046-22637-1-git-send-email-rppt@linux.ibm.com Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Acked-by: Will Deacon <will@kernel.org> [arm64] Acked-by: Thomas Gleixner <tglx@linutronix.de> [x86] Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/alpha/include/asm/pgtable.h5
-rw-r--r--arch/arc/include/asm/pgtable.h5
-rw-r--r--arch/arm/include/asm/pgtable-nommu.h5
-rw-r--r--arch/arm/include/asm/pgtable.h2
-rw-r--r--arch/arm64/include/asm/pgtable.h2
-rw-r--r--arch/arm64/mm/pgd.c2
-rw-r--r--arch/c6x/include/asm/pgtable.h5
-rw-r--r--arch/csky/include/asm/pgtable.h5
-rw-r--r--arch/h8300/include/asm/pgtable.h6
-rw-r--r--arch/hexagon/include/asm/pgtable.h3
-rw-r--r--arch/hexagon/mm/Makefile2
-rw-r--r--arch/hexagon/mm/pgalloc.c10
-rw-r--r--arch/ia64/include/asm/pgtable.h5
-rw-r--r--arch/m68k/include/asm/pgtable_mm.h5
-rw-r--r--arch/m68k/include/asm/pgtable_no.h5
-rw-r--r--arch/microblaze/include/asm/pgtable.h7
-rw-r--r--arch/mips/include/asm/pgtable.h5
-rw-r--r--arch/nds32/include/asm/pgtable.h2
-rw-r--r--arch/nios2/include/asm/pgtable.h2
-rw-r--r--arch/openrisc/include/asm/pgtable.h5
-rw-r--r--arch/parisc/include/asm/pgtable.h2
-rw-r--r--arch/powerpc/include/asm/pgtable.h1
-rw-r--r--arch/riscv/include/asm/pgtable.h5
-rw-r--r--arch/s390/include/asm/pgtable.h5
-rw-r--r--arch/sh/include/asm/pgtable.h5
-rw-r--r--arch/sh/mm/nommu.c4
-rw-r--r--arch/sparc/include/asm/pgtable_32.h5
-rw-r--r--arch/sparc/include/asm/pgtable_64.h1
-rw-r--r--arch/um/include/asm/pgtable.h2
-rw-r--r--arch/unicore32/include/asm/pgtable.h2
-rw-r--r--arch/x86/include/asm/pgtable_32.h1
-rw-r--r--arch/x86/include/asm/pgtable_64.h2
-rw-r--r--arch/x86/mm/pgtable.c6
-rw-r--r--arch/xtensa/include/asm/pgtable.h1
34 files changed, 3 insertions, 127 deletions
diff --git a/arch/alpha/include/asm/pgtable.h b/arch/alpha/include/asm/pgtable.h
index 89c2032f9960..065b57f408c3 100644
--- a/arch/alpha/include/asm/pgtable.h
+++ b/arch/alpha/include/asm/pgtable.h
@@ -359,11 +359,6 @@ extern void paging_init(void);
#include <asm-generic/pgtable.h>
-/*
- * No page table caches to initialise
- */
-#define pgtable_cache_init() do { } while (0)
-
/* We have our own get_unmapped_area to cope with ADDR_LIMIT_32BIT. */
#define HAVE_ARCH_UNMAPPED_AREA
diff --git a/arch/arc/include/asm/pgtable.h b/arch/arc/include/asm/pgtable.h
index 1d87c18a2976..7addd0301c51 100644
--- a/arch/arc/include/asm/pgtable.h
+++ b/arch/arc/include/asm/pgtable.h
@@ -395,11 +395,6 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long address,
/* to cope with aliasing VIPT cache */
#define HAVE_ARCH_UNMAPPED_AREA
-/*
- * No page table caches to initialise
- */
-#define pgtable_cache_init() do { } while (0)
-
#endif /* __ASSEMBLY__ */
#endif
diff --git a/arch/arm/include/asm/pgtable-nommu.h b/arch/arm/include/asm/pgtable-nommu.h
index d0de24f06724..010fa1a35a68 100644
--- a/arch/arm/include/asm/pgtable-nommu.h
+++ b/arch/arm/include/asm/pgtable-nommu.h
@@ -71,11 +71,6 @@ typedef pte_t *pte_addr_t;
extern unsigned int kobjsize(const void *objp);
/*
- * No page table caches to initialise.
- */
-#define pgtable_cache_init() do { } while (0)
-
-/*
* All 32bit addresses are effectively valid for vmalloc...
* Sort of meaningless for non-VM targets.
*/
diff --git a/arch/arm/include/asm/pgtable.h b/arch/arm/include/asm/pgtable.h
index f2e990dc27e7..3ae120cd1715 100644
--- a/arch/arm/include/asm/pgtable.h
+++ b/arch/arm/include/asm/pgtable.h
@@ -368,8 +368,6 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
#define HAVE_ARCH_UNMAPPED_AREA
#define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN
-#define pgtable_cache_init() do { } while (0)
-
#endif /* !__ASSEMBLY__ */
#endif /* CONFIG_MMU */
diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
index 57427d17580e..7576df00eb50 100644
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -861,8 +861,6 @@ extern int kern_addr_valid(unsigned long addr);
#include <asm-generic/pgtable.h>
-static inline void pgtable_cache_init(void) { }
-
/*
* On AArch64, the cache coherency is handled via the set_pte_at() function.
*/
diff --git a/arch/arm64/mm/pgd.c b/arch/arm64/mm/pgd.c
index 7548f9ca1f11..4a64089e5771 100644
--- a/arch/arm64/mm/pgd.c
+++ b/arch/arm64/mm/pgd.c
@@ -35,7 +35,7 @@ void pgd_free(struct mm_struct *mm, pgd_t *pgd)
kmem_cache_free(pgd_cache, pgd);
}
-void __init pgd_cache_init(void)
+void __init pgtable_cache_init(void)
{
if (PGD_SIZE == PAGE_SIZE)
return;
diff --git a/arch/c6x/include/asm/pgtable.h b/arch/c6x/include/asm/pgtable.h
index 0bd805964ea6..0b6919c00413 100644
--- a/arch/c6x/include/asm/pgtable.h
+++ b/arch/c6x/include/asm/pgtable.h
@@ -60,11 +60,6 @@ extern unsigned long empty_zero_page;
#define swapper_pg_dir ((pgd_t *) 0)
/*
- * No page table caches to initialise
- */
-#define pgtable_cache_init() do { } while (0)
-
-/*
* c6x is !MMU, so define the simpliest implementation
*/
#define pgprot_writecombine pgprot_noncached
diff --git a/arch/csky/include/asm/pgtable.h b/arch/csky/include/asm/pgtable.h
index c429a6f347de..0040b3a05b61 100644
--- a/arch/csky/include/asm/pgtable.h
+++ b/arch/csky/include/asm/pgtable.h
@@ -296,11 +296,6 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long address,
/* Needs to be defined here and not in linux/mm.h, as it is arch dependent */
#define kern_addr_valid(addr) (1)
-/*
- * No page table caches to initialise
- */
-#define pgtable_cache_init() do {} while (0)
-
#define io_remap_pfn_range(vma, vaddr, pfn, size, prot) \
remap_pfn_range(vma, vaddr, pfn, size, prot)
diff --git a/arch/h8300/include/asm/pgtable.h b/arch/h8300/include/asm/pgtable.h
index a99caa49d265..4d00152fab58 100644
--- a/arch/h8300/include/asm/pgtable.h
+++ b/arch/h8300/include/asm/pgtable.h
@@ -4,7 +4,6 @@
#define __ARCH_USE_5LEVEL_HACK
#include <asm-generic/pgtable-nopud.h>
#include <asm-generic/pgtable.h>
-#define pgtable_cache_init() do { } while (0)
extern void paging_init(void);
#define PAGE_NONE __pgprot(0) /* these mean nothing to NO_MM */
#define PAGE_SHARED __pgprot(0) /* these mean nothing to NO_MM */
@@ -35,11 +34,6 @@ extern unsigned int kobjsize(const void *objp);
extern int is_in_rom(unsigned long);
/*
- * No page table caches to initialise
- */
-#define pgtable_cache_init() do { } while (0)
-
-/*
* All 32bit addresses are effectively valid for vmalloc...
* Sort of meaningless for non-VM targets.
*/
diff --git a/arch/hexagon/include/asm/pgtable.h b/arch/hexagon/include/asm/pgtable.h
index a3ff6d24c09e..2fec20ad939e 100644
--- a/arch/hexagon/include/asm/pgtable.h
+++ b/arch/hexagon/include/asm/pgtable.h
@@ -431,9 +431,6 @@ static inline int pte_exec(pte_t pte)
#define __pte_offset(address) (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
-/* I think this is in case we have page table caches; needed by init/main.c */
-#define pgtable_cache_init() do { } while (0)
-
/*
* Swap/file PTE definitions. If _PAGE_PRESENT is zero, the rest of the PTE is
* interpreted as swap information. The remaining free bits are interpreted as
diff --git a/arch/hexagon/mm/Makefile b/arch/hexagon/mm/Makefile
index 1894263ae5bc..893838499591 100644
--- a/arch/hexagon/mm/Makefile
+++ b/arch/hexagon/mm/Makefile
@@ -3,5 +3,5 @@
# Makefile for Hexagon memory management subsystem
#
-obj-y := init.o pgalloc.o ioremap.o uaccess.o vm_fault.o cache.o
+obj-y := init.o ioremap.o uaccess.o vm_fault.o cache.o
obj-y += copy_to_user.o copy_from_user.o strnlen_user.o vm_tlb.o
diff --git a/arch/hexagon/mm/pgalloc.c b/arch/hexagon/mm/pgalloc.c
deleted file mode 100644
index 4d4316140237..000000000000
--- a/arch/hexagon/mm/pgalloc.c
+++ /dev/null
@@ -1,10 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
- */
-
-#include <linux/init.h>
-
-void __init pgtable_cache_init(void)
-{
-}
diff --git a/arch/ia64/include/asm/pgtable.h b/arch/ia64/include/asm/pgtable.h
index b1e7468eb65a..d602e7c622db 100644
--- a/arch/ia64/include/asm/pgtable.h
+++ b/arch/ia64/include/asm/pgtable.h
@@ -566,11 +566,6 @@ extern struct page *zero_page_memmap_ptr;
#define KERNEL_TR_PAGE_SHIFT _PAGE_SIZE_64M
#define KERNEL_TR_PAGE_SIZE (1 << KERNEL_TR_PAGE_SHIFT)
-/*
- * No page table caches to initialise
- */
-#define pgtable_cache_init() do { } while (0)
-
/* These tell get_user_pages() that the first gate page is accessible from user-level. */
#define FIXADDR_USER_START GATE_ADDR
#ifdef HAVE_BUGGY_SEGREL
diff --git a/arch/m68k/include/asm/pgtable_mm.h b/arch/m68k/include/asm/pgtable_mm.h
index cc476c1d72e5..646c174fff99 100644
--- a/arch/m68k/include/asm/pgtable_mm.h
+++ b/arch/m68k/include/asm/pgtable_mm.h
@@ -176,9 +176,4 @@ pgprot_t pgprot_dmacoherent(pgprot_t prot);
#include <asm-generic/pgtable.h>
#endif /* !__ASSEMBLY__ */
-/*
- * No page table caches to initialise
- */
-#define pgtable_cache_init() do { } while (0)
-
#endif /* _M68K_PGTABLE_H */
diff --git a/arch/m68k/include/asm/pgtable_no.h b/arch/m68k/include/asm/pgtable_no.h
index 69e271101223..c18165b0d904 100644
--- a/arch/m68k/include/asm/pgtable_no.h
+++ b/arch/m68k/include/asm/pgtable_no.h
@@ -45,11 +45,6 @@ extern void paging_init(void);
#define ZERO_PAGE(vaddr) (virt_to_page(0))
/*
- * No page table caches to initialise.
- */
-#define pgtable_cache_init() do { } while (0)
-
-/*
* All 32bit addresses are effectively valid for vmalloc...
* Sort of meaningless for non-VM targets.
*/
diff --git a/arch/microblaze/include/asm/pgtable.h b/arch/microblaze/include/asm/pgtable.h
index 142d3f004848..954b69af451f 100644
--- a/arch/microblaze/include/asm/pgtable.h
+++ b/arch/microblaze/include/asm/pgtable.h
@@ -46,8 +46,6 @@ extern int mem_init_done;
#define swapper_pg_dir ((pgd_t *) NULL)
-#define pgtable_cache_init() do {} while (0)
-
#define arch_enter_lazy_cpu_mode() do {} while (0)
#define pgprot_noncached_wc(prot) prot
@@ -526,11 +524,6 @@ extern unsigned long iopa(unsigned long addr);
/* Needs to be defined here and not in linux/mm.h, as it is arch dependent */
#define kern_addr_valid(addr) (1)
-/*
- * No page table caches to initialise
- */
-#define pgtable_cache_init() do { } while (0)
-
void do_page_fault(struct pt_regs *regs, unsigned long address,
unsigned long error_code);
diff --git a/arch/mips/include/asm/pgtable.h b/arch/mips/include/asm/pgtable.h
index 4dca733d5076..f85bd5b15f51 100644
--- a/arch/mips/include/asm/pgtable.h
+++ b/arch/mips/include/asm/pgtable.h
@@ -661,9 +661,4 @@ pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
#define HAVE_ARCH_UNMAPPED_AREA
#define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN
-/*
- * No page table caches to initialise
- */
-#define pgtable_cache_init() do { } while (0)
-
#endif /* _ASM_PGTABLE_H */
diff --git a/arch/nds32/include/asm/pgtable.h b/arch/nds32/include/asm/pgtable.h
index c70cc56bec09..0588ec99725c 100644
--- a/arch/nds32/include/asm/pgtable.h
+++ b/arch/nds32/include/asm/pgtable.h
@@ -403,8 +403,6 @@ extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
* into virtual address `from'
*/
-#define pgtable_cache_init() do { } while (0)
-
#endif /* !__ASSEMBLY__ */
#endif /* _ASMNDS32_PGTABLE_H */
diff --git a/arch/nios2/include/asm/pgtable.h b/arch/nios2/include/asm/pgtable.h
index 95237b7f6fc1..99985d8b7166 100644
--- a/arch/nios2/include/asm/pgtable.h
+++ b/arch/nios2/include/asm/pgtable.h
@@ -291,8 +291,6 @@ static inline void pte_clear(struct mm_struct *mm,
#include <asm-generic/pgtable.h>
-#define pgtable_cache_init() do { } while (0)
-
extern void __init paging_init(void);
extern void __init mmu_init(void);
diff --git a/arch/openrisc/include/asm/pgtable.h b/arch/openrisc/include/asm/pgtable.h
index 2fe9ff5b5d6f..248d22d8faa7 100644
--- a/arch/openrisc/include/asm/pgtable.h
+++ b/arch/openrisc/include/asm/pgtable.h
@@ -443,11 +443,6 @@ static inline void update_mmu_cache(struct vm_area_struct *vma,
#include <asm-generic/pgtable.h>
-/*
- * No page table caches to initialise
- */
-#define pgtable_cache_init() do { } while (0)
-
typedef pte_t *pte_addr_t;
#endif /* __ASSEMBLY__ */
diff --git a/arch/parisc/include/asm/pgtable.h b/arch/parisc/include/asm/pgtable.h
index 6d58c1739b42..4ac374b3a99f 100644
--- a/arch/parisc/include/asm/pgtable.h
+++ b/arch/parisc/include/asm/pgtable.h
@@ -132,8 +132,6 @@ static inline void purge_tlb_entries(struct mm_struct *mm, unsigned long addr)
#define PTRS_PER_PTE (1UL << BITS_PER_PTE)
/* Definitions for 2nd level */
-#define pgtable_cache_init() do { } while (0)
-
#define PMD_SHIFT (PLD_SHIFT + BITS_PER_PTE)
#define PMD_SIZE (1UL << PMD_SHIFT)
#define PMD_MASK (~(PMD_SIZE-1))
diff --git a/arch/powerpc/include/asm/pgtable.h b/arch/powerpc/include/asm/pgtable.h
index 8b7865a2d576..4053b2ab427c 100644
--- a/arch/powerpc/include/asm/pgtable.h
+++ b/arch/powerpc/include/asm/pgtable.h
@@ -87,7 +87,6 @@ extern unsigned long ioremap_bot;
unsigned long vmalloc_to_phys(void *vmalloc_addr);
void pgtable_cache_add(unsigned int shift);
-void pgtable_cache_init(void);
#if defined(CONFIG_STRICT_KERNEL_RWX) || defined(CONFIG_PPC32)
void mark_initmem_nx(void);
diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h
index 80905b27ee98..c60123f018f5 100644
--- a/arch/riscv/include/asm/pgtable.h
+++ b/arch/riscv/include/asm/pgtable.h
@@ -424,11 +424,6 @@ extern void *dtb_early_va;
extern void setup_bootmem(void);
extern void paging_init(void);
-static inline void pgtable_cache_init(void)
-{
- /* No page table caches to initialize */
-}
-
#define VMALLOC_SIZE (KERN_VIRT_SIZE >> 1)
#define VMALLOC_END (PAGE_OFFSET - 1)
#define VMALLOC_START (PAGE_OFFSET - VMALLOC_SIZE)
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h
index 8f59454ac407..36c578c0ff96 100644
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@ -1682,11 +1682,6 @@ extern void s390_reset_cmma(struct mm_struct *mm);
#define HAVE_ARCH_UNMAPPED_AREA
#define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN
-/*
- * No page table caches to initialise
- */
-static inline void pgtable_cache_init(void) { }
-
#include <asm-generic/pgtable.h>
#endif /* _S390_PAGE_H */
diff --git a/arch/sh/include/asm/pgtable.h b/arch/sh/include/asm/pgtable.h
index 9085d1142fa3..cbd0f3c55a0c 100644
--- a/arch/sh/include/asm/pgtable.h
+++ b/arch/sh/include/asm/pgtable.h
@@ -123,11 +123,6 @@ typedef pte_t *pte_addr_t;
#define pte_pfn(x) ((unsigned long)(((x).pte_low >> PAGE_SHIFT)))
-/*
- * Initialise the page table caches
- */
-extern void pgtable_cache_init(void);
-
struct vm_area_struct;
struct mm_struct;
diff --git a/arch/sh/mm/nommu.c b/arch/sh/mm/nommu.c
index cc779a90d917..dca946f426c6 100644
--- a/arch/sh/mm/nommu.c
+++ b/arch/sh/mm/nommu.c
@@ -97,7 +97,3 @@ void __init page_table_range_init(unsigned long start, unsigned long end,
void __set_fixmap(enum fixed_addresses idx, unsigned long phys, pgprot_t prot)
{
}
-
-void pgtable_cache_init(void)
-{
-}
diff --git a/arch/sparc/include/asm/pgtable_32.h b/arch/sparc/include/asm/pgtable_32.h
index 4eebed6c6781..31da44826645 100644
--- a/arch/sparc/include/asm/pgtable_32.h
+++ b/arch/sparc/include/asm/pgtable_32.h
@@ -445,9 +445,4 @@ static inline int io_remap_pfn_range(struct vm_area_struct *vma,
/* We provide our own get_unmapped_area to cope with VA holes for userland */
#define HAVE_ARCH_UNMAPPED_AREA
-/*
- * No page table caches to initialise
- */
-#define pgtable_cache_init() do { } while (0)
-
#endif /* !(_SPARC_PGTABLE_H) */
diff --git a/arch/sparc/include/asm/pgtable_64.h b/arch/sparc/include/asm/pgtable_64.h
index 1599de730532..b57f9c631eca 100644
--- a/arch/sparc/include/asm/pgtable_64.h
+++ b/arch/sparc/include/asm/pgtable_64.h
@@ -1135,7 +1135,6 @@ unsigned long get_fb_unmapped_area(struct file *filp, unsigned long,
unsigned long);
#define HAVE_ARCH_FB_UNMAPPED_AREA
-void pgtable_cache_init(void);
void sun4v_register_fault_status(void);
void sun4v_ktsb_register(void);
void __init cheetah_ecache_flush_init(void);
diff --git a/arch/um/include/asm/pgtable.h b/arch/um/include/asm/pgtable.h
index e4d3ed980d82..36a44d58f373 100644
--- a/arch/um/include/asm/pgtable.h
+++ b/arch/um/include/asm/pgtable.h
@@ -32,8 +32,6 @@ extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
/* zero page used for uninitialized stuff */
extern unsigned long *empty_zero_page;
-#define pgtable_cache_init() do ; while (0)
-
/* Just any arbitrary offset to the start of the vmalloc VM area: the
* current 8MB value just means that there will be a 8MB "hole" after the
* physical memory until the kernel virtual memory starts. That means that
diff --git a/arch/unicore32/include/asm/pgtable.h b/arch/unicore32/include/asm/pgtable.h
index 126e961a8cb0..c8f7ba12f309 100644
--- a/arch/unicore32/include/asm/pgtable.h
+++ b/arch/unicore32/include/asm/pgtable.h
@@ -285,8 +285,6 @@ extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
#include <asm-generic/pgtable.h>
-#define pgtable_cache_init() do { } while (0)
-
#endif /* !__ASSEMBLY__ */
#endif /* __UNICORE_PGTABLE_H__ */
diff --git a/arch/x86/include/asm/pgtable_32.h b/arch/x86/include/asm/pgtable_32.h
index b9b9f8aa963e..0dca7f7aeff2 100644
--- a/arch/x86/include/asm/pgtable_32.h
+++ b/arch/x86/include/asm/pgtable_32.h
@@ -29,7 +29,6 @@ extern pgd_t swapper_pg_dir[1024];
extern pgd_t initial_page_table[1024];
extern pmd_t initial_pg_pmd[];
-static inline void pgtable_cache_init(void) { }
void paging_init(void);
void sync_initial_page_table(void);
diff --git a/arch/x86/include/asm/pgtable_64.h b/arch/x86/include/asm/pgtable_64.h
index a26d2d58b9c9..0b6c4042942a 100644
--- a/arch/x86/include/asm/pgtable_64.h
+++ b/arch/x86/include/asm/pgtable_64.h
@@ -241,8 +241,6 @@ extern void cleanup_highmap(void);
#define HAVE_ARCH_UNMAPPED_AREA
#define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN
-#define pgtable_cache_init() do { } while (0)
-
#define PAGE_AGP PAGE_KERNEL_NOCACHE
#define HAVE_PAGE_AGP 1
diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c
index 44816ff6411f..463940faf52f 100644
--- a/arch/x86/mm/pgtable.c
+++ b/arch/x86/mm/pgtable.c
@@ -357,7 +357,7 @@ static void pgd_prepopulate_user_pmd(struct mm_struct *mm,
static struct kmem_cache *pgd_cache;
-void __init pgd_cache_init(void)
+void __init pgtable_cache_init(void)
{
/*
* When PAE kernel is running as a Xen domain, it does not use
@@ -402,10 +402,6 @@ static inline void _pgd_free(pgd_t *pgd)
}
#else
-void __init pgd_cache_init(void)
-{
-}
-
static inline pgd_t *_pgd_alloc(void)
{
return (pgd_t *)__get_free_pages(GFP_PGTABLE_USER,
diff --git a/arch/xtensa/include/asm/pgtable.h b/arch/xtensa/include/asm/pgtable.h
index ce3ff5e591b9..3f7fe5a8c286 100644
--- a/arch/xtensa/include/asm/pgtable.h
+++ b/arch/xtensa/include/asm/pgtable.h
@@ -238,7 +238,6 @@ extern void paging_init(void);
# define swapper_pg_dir NULL
static inline void paging_init(void) { }
#endif
-static inline void pgtable_cache_init(void) { }
/*
* The pmd contains the kernel virtual address of the pte page.