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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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b4ed71f557
The naming of pgtable_page_{ctor,dtor}() seems to have confused a few
people, and until recently arm64 used these erroneously/pointlessly for
other levels of page table.
To make it incredibly clear that these only apply to the PTE level, and to
align with the naming of pgtable_pmd_page_{ctor,dtor}(), let's rename them
to pgtable_pte_page_{ctor,dtor}().
These changes were generated with the following shell script:
----
git grep -lw 'pgtable_page_.tor' | while read FILE; do
sed -i '{s/pgtable_page_ctor/pgtable_pte_page_ctor/}' $FILE;
sed -i '{s/pgtable_page_dtor/pgtable_pte_page_dtor/}' $FILE;
done
----
... with the documentation re-flowed to remain under 80 columns, and
whitespace fixed up in macros to keep backslashes aligned.
There should be no functional change as a result of this patch.
Link: http://lkml.kernel.org/r/20190722141133.3116-1-mark.rutland@arm.com
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Mike Rapoport <rppt@linux.ibm.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> [m68k]
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Yu Zhao <yuzhao@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
78 lines
1.6 KiB
C
78 lines
1.6 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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#include <linux/highmem.h>
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#include <linux/slab.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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#define pmd_pgtable(pmd) pmd_page(pmd)
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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 pgd_free(struct mm_struct *mm, pgd_t *pgd)
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{
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free_page((unsigned long)pgd);
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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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int i;
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ptep = (pte_t *)__get_free_page(GFP_KERNEL);
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if (!ptep)
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return NULL;
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for (i = 0; i < 1024; i++)
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pte_clear(NULL, 0, ptep + i);
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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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pte_t *pte;
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struct page *page;
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pte = pte_alloc_one_kernel(mm);
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if (!pte)
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return NULL;
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page = virt_to_page(pte);
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if (!pgtable_pte_page_ctor(page)) {
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__free_page(page);
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return NULL;
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}
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return page;
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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_page((unsigned long)pte);
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}
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static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
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{
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pgtable_pte_page_dtor(pte);
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__free_page(pte);
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}
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#define pmd_pgtable(pmd) pmd_page(pmd)
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#endif /* _XTENSA_PGALLOC_H */
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