1c2f7d14d8
Currently most platforms define pmd_pgtable() as pmd_page() duplicating the same code all over. Instead just define a default value i.e pmd_page() for pmd_pgtable() and let platforms override when required via <asm/pgtable.h>. All the existing platform that override pmd_pgtable() have been moved into their respective <asm/pgtable.h> header in order to precede before the new generic definition. This makes it much cleaner with reduced code. Link: https://lkml.kernel.org/r/1623646133-20306-1-git-send-email-anshuman.khandual@arm.com Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Mike Rapoport <rppt@linux.ibm.com> Cc: Nick Hu <nickhu@andestech.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will@kernel.org> Cc: Guo Ren <guoren@kernel.org> Cc: Brian Cain <bcain@codeaurora.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Michal Simek <monstr@monstr.eu> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Ley Foon Tan <ley.foon.tan@intel.com> Cc: Jonas Bonn <jonas@southpole.se> Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> Cc: Stafford Horne <shorne@gmail.com> Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jeff Dike <jdike@addtoit.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Chris Zankel <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
97 lines
2.1 KiB
C
97 lines
2.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _MOTOROLA_PGALLOC_H
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#define _MOTOROLA_PGALLOC_H
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#include <asm/tlb.h>
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#include <asm/tlbflush.h>
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extern void mmu_page_ctor(void *page);
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extern void mmu_page_dtor(void *page);
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enum m68k_table_types {
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TABLE_PGD = 0,
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TABLE_PMD = 0, /* same size as PGD */
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TABLE_PTE = 1,
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};
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extern void init_pointer_table(void *table, int type);
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extern void *get_pointer_table(int type);
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extern int free_pointer_table(void *table, int type);
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/*
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* Allocate and free page tables. The xxx_kernel() versions are
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* used to allocate a kernel page table - this turns on ASN bits
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* if any.
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*/
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static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm)
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{
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return get_pointer_table(TABLE_PTE);
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}
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static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
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{
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free_pointer_table(pte, TABLE_PTE);
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}
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static inline pgtable_t pte_alloc_one(struct mm_struct *mm)
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{
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return get_pointer_table(TABLE_PTE);
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}
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static inline void pte_free(struct mm_struct *mm, pgtable_t pgtable)
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{
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free_pointer_table(pgtable, TABLE_PTE);
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}
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static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pgtable,
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unsigned long address)
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{
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free_pointer_table(pgtable, TABLE_PTE);
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}
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static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
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{
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return get_pointer_table(TABLE_PMD);
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}
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static inline int pmd_free(struct mm_struct *mm, pmd_t *pmd)
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{
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return free_pointer_table(pmd, TABLE_PMD);
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}
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static inline int __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd,
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unsigned long address)
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{
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return free_pointer_table(pmd, TABLE_PMD);
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}
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static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
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{
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free_pointer_table(pgd, TABLE_PGD);
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}
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static inline pgd_t *pgd_alloc(struct mm_struct *mm)
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{
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return get_pointer_table(TABLE_PGD);
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}
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static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
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{
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pmd_set(pmd, pte);
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}
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static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t page)
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{
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pmd_set(pmd, page);
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}
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static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
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{
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pud_set(pud, pmd);
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}
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#endif /* _MOTOROLA_PGALLOC_H */
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