arch/mips/mm/pgtable.c

Source file repositories/reference/linux-study-clean/arch/mips/mm/pgtable.c

File Facts

System
Linux kernel
Corpus path
arch/mips/mm/pgtable.c
Extension
.c
Size
619 bytes
Lines
26
Domain
Architecture Layer
Bucket
arch/mips
Inferred role
Architecture Layer: exported/initcall integration point
Status
integration 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

#include <linux/export.h>
#include <linux/mm.h>
#include <linux/string.h>
#include <asm/pgalloc.h>

pgd_t *pgd_alloc(struct mm_struct *mm)
{
	pgd_t *init, *ret;

	ret = __pgd_alloc(mm, PGD_TABLE_ORDER);
	if (ret) {
		init = pgd_offset(&init_mm, 0UL);
		pgd_init(ret);
		memcpy(ret + USER_PTRS_PER_PGD, init + USER_PTRS_PER_PGD,
		       (PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
	}

	return ret;
}
EXPORT_SYMBOL_GPL(pgd_alloc);

Annotation

Implementation Notes