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e3ecf7c7d0
Now, the nine architectures of csky, hexagon, loongarch, m68k, mips,
nios2, openrisc, sh and um do not select CONFIG_MMU_GATHER_RCU_TABLE_FREE,
and just call pagetable_dtor() + tlb_remove_page_ptdesc() (the wrapper of
tlb_remove_page()). This is the same as the implementation of
tlb_remove_{ptdesc|table}() under !CONFIG_MMU_GATHER_TABLE_FREE, so
convert these architectures to use tlb_remove_ptdesc().
The ultimate goal is to make the architecture only use tlb_remove_ptdesc()
or tlb_remove_table() for page table pages.
[zhengqi.arch@bytedance.com: v2]
Link: https://lkml.kernel.org/r/20250303072603.45423-1-zhengqi.arch@bytedance.com
[akpm@linux-foundation.org: remove trailing semi in arch/loongarch/include/asm/pgalloc.h]
Link: https://lkml.kernel.org/r/19db3e8673b67bad2f1df1ab37f1c89d99eacfea.1740454179.git.zhengqi.arch@bytedance.com
Signed-off-by: Qi Zheng <zhengqi.arch@bytedance.com>
Suggested-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kevin Brodsky <kevin.brodsky@arm.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> [m68k]
Cc: Alexandre Ghiti <alexghiti@rivosinc.com>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Hugh Dickens <hughd@google.com>
Cc: Jann Horn <jannh@google.com>
Cc: Matthew Wilcow (Oracle) <willy@infradead.org>
Cc: "Mike Rapoport (IBM)" <rppt@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Cc: Will Deacon <will@kernel.org>
Cc: Yu Zhao <yuzhao@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
108 lines
2.3 KiB
C
108 lines
2.3 KiB
C
/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 1994 - 2001, 2003 by Ralf Baechle
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* Copyright (C) 1999, 2000, 2001 Silicon Graphics, Inc.
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*/
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#ifndef _ASM_PGALLOC_H
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#define _ASM_PGALLOC_H
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#include <linux/highmem.h>
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#include <linux/mm.h>
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#include <linux/sched.h>
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#define __HAVE_ARCH_PMD_ALLOC_ONE
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#define __HAVE_ARCH_PUD_ALLOC_ONE
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#include <asm-generic/pgalloc.h>
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static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
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pte_t *pte)
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{
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set_pmd(pmd, __pmd((unsigned long)pte));
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}
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static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
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pgtable_t pte)
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{
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set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
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}
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/*
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* Initialize a new pmd table with invalid pointers.
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*/
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extern void pmd_init(void *addr);
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#ifndef __PAGETABLE_PMD_FOLDED
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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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set_pud(pud, __pud((unsigned long)pmd));
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}
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#endif
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/*
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* Initialize a new pgd table with invalid pointers.
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*/
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extern void pgd_init(void *addr);
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extern pgd_t *pgd_alloc(struct mm_struct *mm);
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#define __pte_free_tlb(tlb, pte, address) \
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tlb_remove_ptdesc((tlb), page_ptdesc(pte))
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#ifndef __PAGETABLE_PMD_FOLDED
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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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pmd_t *pmd;
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struct ptdesc *ptdesc;
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ptdesc = pagetable_alloc(GFP_KERNEL_ACCOUNT, PMD_TABLE_ORDER);
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if (!ptdesc)
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return NULL;
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if (!pagetable_pmd_ctor(ptdesc)) {
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pagetable_free(ptdesc);
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return NULL;
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}
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pmd = ptdesc_address(ptdesc);
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pmd_init(pmd);
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return pmd;
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}
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#define __pmd_free_tlb(tlb, x, addr) pmd_free((tlb)->mm, x)
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#endif
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#ifndef __PAGETABLE_PUD_FOLDED
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static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long address)
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{
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pud_t *pud;
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struct ptdesc *ptdesc = pagetable_alloc(GFP_KERNEL & ~__GFP_HIGHMEM,
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PUD_TABLE_ORDER);
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if (!ptdesc)
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return NULL;
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pagetable_pud_ctor(ptdesc);
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pud = ptdesc_address(ptdesc);
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pud_init(pud);
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return pud;
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}
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static inline void p4d_populate(struct mm_struct *mm, p4d_t *p4d, pud_t *pud)
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{
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set_p4d(p4d, __p4d((unsigned long)pud));
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}
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#define __pud_free_tlb(tlb, x, addr) pud_free((tlb)->mm, x)
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#endif /* __PAGETABLE_PUD_FOLDED */
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extern void pagetable_init(void);
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#endif /* _ASM_PGALLOC_H */
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