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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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b73c806341
Keep the dimensions of the page tables in a separate header file in preparation for allowing a three level page table structure. Signed-off-by: Matt Fleming <matt@console-pimps.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
31 lines
696 B
C
31 lines
696 B
C
#ifndef __ASM_SH_PGALLOC_NOPMD_H
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#define __ASM_SH_PGALLOC_NOPMD_H
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#define QUICK_PGD 0 /* We preserve special mappings over free */
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static inline void pgd_ctor(void *x)
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{
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pgd_t *pgd = x;
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memcpy(pgd + USER_PTRS_PER_PGD,
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swapper_pg_dir + USER_PTRS_PER_PGD,
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(PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
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}
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static inline pgd_t *pgd_alloc(struct mm_struct *mm)
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{
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return quicklist_alloc(QUICK_PGD, GFP_KERNEL | __GFP_REPEAT, pgd_ctor);
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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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quicklist_free(QUICK_PGD, NULL, pgd);
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}
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static inline void __check_pgt_cache(void)
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{
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quicklist_trim(QUICK_PGD, NULL, 25, 16);
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}
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#endif /* __ASM_SH_PGALLOC_NOPMD_H */
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