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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>
68 lines
1.4 KiB
C
68 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* include/asm-xtensa/pgalloc.h
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*
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* Copyright (C) 2001-2007 Tensilica Inc.
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*/
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#ifndef _XTENSA_PGALLOC_H
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#define _XTENSA_PGALLOC_H
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#ifdef CONFIG_MMU
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#include <linux/highmem.h>
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#include <linux/slab.h>
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#define __HAVE_ARCH_PTE_ALLOC_ONE_KERNEL
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#define __HAVE_ARCH_PTE_ALLOC_ONE
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#include <asm-generic/pgalloc.h>
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/*
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* Allocating and freeing a pmd is trivial: the 1-entry pmd is
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* inside the pgd, so has no extra memory associated with it.
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*/
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#define pmd_populate_kernel(mm, pmdp, ptep) \
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(pmd_val(*(pmdp)) = ((unsigned long)ptep))
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#define pmd_populate(mm, pmdp, page) \
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(pmd_val(*(pmdp)) = ((unsigned long)page_to_virt(page)))
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static inline pgd_t*
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pgd_alloc(struct mm_struct *mm)
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{
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return (pgd_t*) __get_free_pages(GFP_KERNEL | __GFP_ZERO, PGD_ORDER);
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}
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static inline void ptes_clear(pte_t *ptep)
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{
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int i;
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for (i = 0; i < PTRS_PER_PTE; i++)
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pte_clear(NULL, 0, ptep + i);
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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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pte_t *ptep;
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ptep = (pte_t *)__pte_alloc_one_kernel(mm);
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if (!ptep)
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return NULL;
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ptes_clear(ptep);
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return ptep;
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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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struct page *page;
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page = __pte_alloc_one(mm, GFP_PGTABLE_USER);
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if (!page)
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return NULL;
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ptes_clear(page_address(page));
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return page;
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}
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#endif /* CONFIG_MMU */
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#endif /* _XTENSA_PGALLOC_H */
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