mirror of
https://github.com/torvalds/linux
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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>
115 lines
2.7 KiB
C
115 lines
2.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _SPARC64_PGALLOC_H
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#define _SPARC64_PGALLOC_H
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/mm.h>
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#include <linux/slab.h>
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#include <asm/spitfire.h>
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#include <asm/cpudata.h>
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#include <asm/cacheflush.h>
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#include <asm/page.h>
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/* Page table allocation/freeing. */
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extern struct kmem_cache *pgtable_cache;
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static inline void __p4d_populate(p4d_t *p4d, pud_t *pud)
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{
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p4d_set(p4d, pud);
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}
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#define p4d_populate(MM, P4D, PUD) __p4d_populate(P4D, PUD)
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static inline pgd_t *pgd_alloc(struct mm_struct *mm)
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{
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return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
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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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kmem_cache_free(pgtable_cache, pgd);
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}
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static inline void __pud_populate(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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#define pud_populate(MM, PUD, PMD) __pud_populate(PUD, PMD)
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static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
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{
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return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
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}
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static inline void pud_free(struct mm_struct *mm, pud_t *pud)
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{
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kmem_cache_free(pgtable_cache, pud);
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}
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static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
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{
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return kmem_cache_alloc(pgtable_cache, GFP_KERNEL);
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}
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static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
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{
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kmem_cache_free(pgtable_cache, pmd);
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}
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pte_t *pte_alloc_one_kernel(struct mm_struct *mm);
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pgtable_t pte_alloc_one(struct mm_struct *mm);
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void pte_free_kernel(struct mm_struct *mm, pte_t *pte);
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void pte_free(struct mm_struct *mm, pgtable_t ptepage);
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#define pmd_populate_kernel(MM, PMD, PTE) pmd_set(MM, PMD, PTE)
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#define pmd_populate(MM, PMD, PTE) pmd_set(MM, PMD, PTE)
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void pgtable_free(void *table, bool is_page);
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#ifdef CONFIG_SMP
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struct mmu_gather;
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void tlb_remove_table(struct mmu_gather *, void *);
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static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page)
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{
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unsigned long pgf = (unsigned long)table;
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if (is_page)
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pgf |= 0x1UL;
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tlb_remove_table(tlb, (void *)pgf);
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}
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static inline void __tlb_remove_table(void *_table)
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{
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void *table = (void *)((unsigned long)_table & ~0x1UL);
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bool is_page = false;
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if ((unsigned long)_table & 0x1UL)
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is_page = true;
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pgtable_free(table, is_page);
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}
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#else /* CONFIG_SMP */
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static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page)
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{
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pgtable_free(table, is_page);
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}
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#endif /* !CONFIG_SMP */
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static inline void __pte_free_tlb(struct mmu_gather *tlb, pte_t *pte,
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unsigned long address)
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{
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pgtable_free_tlb(tlb, pte, true);
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}
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#define __pmd_free_tlb(tlb, pmd, addr) \
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pgtable_free_tlb(tlb, pmd, false)
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#define __pud_free_tlb(tlb, pud, addr) \
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pgtable_free_tlb(tlb, pud, false)
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#endif /* _SPARC64_PGALLOC_H */
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