static inline void pmd_populate_kernel()

in include/asm/pgalloc.h [64:88]

• 18 lines of code
• 2 McCabe index (conditional complexity)

static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
				       pte_t *pte)
{
	extern spinlock_t kmap_gen_lock;
	pmd_t *ppmd;
	int pmdindex;

	spin_lock(&kmap_gen_lock);
	kmap_generation++;
	mm->context.generation = kmap_generation;
	current->active_mm->context.generation = kmap_generation;
	spin_unlock(&kmap_gen_lock);

	set_pmd(pmd, __pmd(((unsigned long)__pa(pte)) | HEXAGON_L1_PTE_SIZE));

	/*
	 * Now the "slave" copy of the current thread.
	 * This is pointer arithmetic, not byte addresses!
	 */
	pmdindex = (pgd_t *)pmd - mm->pgd;
	ppmd = (pmd_t *)current->active_mm->pgd + pmdindex;
	set_pmd(ppmd, __pmd(((unsigned long)__pa(pte)) | HEXAGON_L1_PTE_SIZE));
	if (pmdindex > max_kernel_seg)
		max_kernel_seg = pmdindex;
}