arch/sparc/include/asm/hugetlb.h

Source file repositories/reference/linux-study-clean/arch/sparc/include/asm/hugetlb.h

File Facts

System
Linux kernel
Corpus path
arch/sparc/include/asm/hugetlb.h
Extension
.h
Size
1552 bytes
Lines
56
Domain
Architecture Layer
Bucket
arch/sparc
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

struct pud_huge_patch_entry {
	unsigned int addr;
	unsigned int insn;
};
extern struct pud_huge_patch_entry __pud_huge_patch, __pud_huge_patch_end;
#endif

#define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
		     pte_t *ptep, pte_t pte, unsigned long sz);
void __set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
		     pte_t *ptep, pte_t pte);

#define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
			      pte_t *ptep, unsigned long sz);

#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
static inline pte_t huge_ptep_clear_flush(struct vm_area_struct *vma,
					  unsigned long addr, pte_t *ptep)
{
	return *ptep;
}

#define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
					   unsigned long addr, pte_t *ptep)
{
	pte_t old_pte = *ptep;
	__set_huge_pte_at(mm, addr, ptep, pte_wrprotect(old_pte));
}

#define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
					     unsigned long addr, pte_t *ptep,
					     pte_t pte, int dirty)
{
	int changed = !pte_same(*ptep, pte);
	if (changed) {
		__set_huge_pte_at(vma->vm_mm, addr, ptep, pte);
		flush_tlb_page(vma, addr);
	}
	return changed;
}

#include <asm-generic/hugetlb.h>

#endif /* _ASM_SPARC64_HUGETLB_H */

Annotation

Implementation Notes