change otg to host mode

hc

2024-05-11 04dd17822334871b23ea2862f7798fb0e0007777

 kernel/arch/mips/include/asm/pgalloc.h
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@@ -13,6 +13,11 @@
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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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+#define __HAVE_ARCH_PGD_FREE
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+#include <asm-generic/pgalloc.h>
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+
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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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@@ -50,42 +55,9 @@
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 	free_pages((unsigned long)pgd, PGD_ORDER);
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 }
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-static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
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-	unsigned long address)
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-{
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-	return (pte_t *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, PTE_ORDER);
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-}
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-
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-static inline struct page *pte_alloc_one(struct mm_struct *mm,
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-	unsigned long address)
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-{
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-	struct page *pte;
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-
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-	pte = alloc_pages(GFP_KERNEL, PTE_ORDER);
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-	if (!pte)
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-		return NULL;
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-	clear_highpage(pte);
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-	if (!pgtable_page_ctor(pte)) {
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-		__free_page(pte);
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-		return NULL;
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-	}
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-	return pte;
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-}
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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_pages((unsigned long)pte, PTE_ORDER);
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-}
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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_page_dtor(pte);
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-	__free_pages(pte, PTE_ORDER);
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-}
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-
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 #define __pte_free_tlb(tlb,pte,address)			\
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 do {							\
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-	pgtable_page_dtor(pte);				\
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+	pgtable_pte_page_dtor(pte);			\
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 	tlb_remove_page((tlb), pte);			\
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 } while (0)
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..
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@@ -94,16 +66,20 @@
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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 page *pg;
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-	pmd = (pmd_t *) __get_free_pages(GFP_KERNEL, PMD_ORDER);
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-	if (pmd)
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-		pmd_init((unsigned long)pmd, (unsigned long)invalid_pte_table);
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+	pg = alloc_pages(GFP_KERNEL_ACCOUNT, PMD_ORDER);
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+	if (!pg)
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+		return NULL;
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+
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+	if (!pgtable_pmd_page_ctor(pg)) {
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+		__free_pages(pg, PMD_ORDER);
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+		return NULL;
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+	}
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+
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+	pmd = (pmd_t *)page_address(pg);
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+	pmd_init((unsigned long)pmd, (unsigned long)invalid_pte_table);
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 	return pmd;
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-}
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-
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-static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
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-{
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-	free_pages((unsigned long)pmd, PMD_ORDER);
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 }
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 #define __pmd_free_tlb(tlb, x, addr)	pmd_free((tlb)->mm, x)
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@@ -122,21 +98,14 @@
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 	return pud;
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 }
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-static inline void pud_free(struct mm_struct *mm, pud_t *pud)
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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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-	free_pages((unsigned long)pud, PUD_ORDER);
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-}
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-
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-static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pud_t *pud)
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-{
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-	set_pgd(pgd, __pgd((unsigned long)pud));
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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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-
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-#define check_pgt_cache()	do { } while (0)
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 extern void pagetable_init(void);
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