static void __init fixedrange_init()

in mm/init.c [98:131]

• 25 lines of code
• 3 McCabe index (conditional complexity)

static void __init fixedrange_init(void)
{
	unsigned long vaddr;
	pmd_t *pmd;
#ifdef CONFIG_HIGHMEM
	pte_t *pte;
#endif /* CONFIG_HIGHMEM */

	/*
	 * Fixed mappings:
	 */
	vaddr = __fix_to_virt(__end_of_fixed_addresses - 1);
	pmd = pmd_off_k(vaddr);
	fixmap_pmd_p = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
	if (!fixmap_pmd_p)
		panic("%s: Failed to allocate %lu bytes align=0x%lx\n",
		      __func__, PAGE_SIZE, PAGE_SIZE);
	set_pmd(pmd, __pmd(__pa(fixmap_pmd_p) + _PAGE_KERNEL_TABLE));

#ifdef CONFIG_HIGHMEM
	/*
	 * Permanent kmaps:
	 */
	vaddr = PKMAP_BASE;

	pmd = pmd_off_k(vaddr);
	pte = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
	if (!pte)
		panic("%s: Failed to allocate %lu bytes align=0x%lx\n",
		      __func__, PAGE_SIZE, PAGE_SIZE);
	set_pmd(pmd, __pmd(__pa(pte) + _PAGE_KERNEL_TABLE));
	pkmap_page_table = pte;
#endif /* CONFIG_HIGHMEM */
}