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5339ec29f9
While the GCC and Clang compilers already define __ASSEMBLER__ automatically when compiling assembly code, __ASSEMBLY__ is a macro that only gets defined by the Makefiles in the kernel. This can be very confusing when switching between userspace and kernelspace coding, or when dealing with uapi headers that rather should use __ASSEMBLER__ instead. So let's standardize now on the __ASSEMBLER__ macro that is provided by the compilers. This is a completely mechanical patch (done with a simple "sed -i" statement). Link: https://lore.kernel.org/20260619131830.229804-1-thuth@redhat.com Signed-off-by: Thomas Huth <thuth@redhat.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Axel Rasmussen <axelrasmussen@google.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Kairui Song <kasong@tencent.com> Cc: Liam R. Howlett <liam@infradead.org> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Shakeel Butt <shakeel.butt@linux.dev> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Wei Xu <weixugc@google.com> Cc: Yuanchu Xie <yuanchu@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
74 lines
2.0 KiB
C
74 lines
2.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _PGTABLE_NOPMD_H
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#define _PGTABLE_NOPMD_H
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#ifndef __ASSEMBLER__
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#include <asm-generic/pgtable-nopud.h>
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struct mm_struct;
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#define __PAGETABLE_PMD_FOLDED 1
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/*
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* Having the pmd type consist of a pud gets the size right, and allows
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* us to conceptually access the pud entry that this pmd is folded into
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* without casting.
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*/
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typedef struct { pud_t pud; } pmd_t;
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#define PMD_SHIFT PUD_SHIFT
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#define PTRS_PER_PMD 1
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#define PMD_SIZE (1UL << PMD_SHIFT)
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#define PMD_MASK (~(PMD_SIZE-1))
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/*
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* The "pud_xxx()" functions here are trivial for a folded two-level
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* setup: the pmd is never bad, and a pmd always exists (as it's folded
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* into the pud entry)
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*/
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static inline int pud_none(pud_t pud) { return 0; }
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static inline int pud_bad(pud_t pud) { return 0; }
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static inline int pud_present(pud_t pud) { return 1; }
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static inline int pud_user(pud_t pud) { return 0; }
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static inline int pud_leaf(pud_t pud) { return 0; }
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static inline void pud_clear(pud_t *pud) { }
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#define pmd_ERROR(pmd) (pud_ERROR((pmd).pud))
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#define pud_populate(mm, pmd, pte) do { } while (0)
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/*
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* (pmds are folded into puds so this doesn't get actually called,
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* but the define is needed for a generic inline function.)
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*/
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#define set_pud(pudptr, pudval) set_pmd((pmd_t *)(pudptr), (pmd_t) { pudval })
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static inline pmd_t * pmd_offset(pud_t * pud, unsigned long address)
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{
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return (pmd_t *)pud;
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}
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#define pmd_offset pmd_offset
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#define pmd_val(x) (pud_val((x).pud))
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#define __pmd(x) ((pmd_t) { __pud(x) } )
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#define pud_page(pud) (pmd_page((pmd_t){ pud }))
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#define pud_pgtable(pud) ((pmd_t *)(pmd_page_vaddr((pmd_t){ pud })))
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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 pud, so has no extra memory associated with it.
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*/
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#define pmd_alloc_one(mm, address) NULL
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static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
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{
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}
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#define pmd_free_tlb(tlb, x, a) do { } while (0)
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#undef pmd_addr_end
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#define pmd_addr_end(addr, end) (end)
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#endif /* __ASSEMBLER__ */
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#endif /* _PGTABLE_NOPMD_H */
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