static inline int tlb_get_level()

in include/asm/tlb.h [29:51]

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

static inline int tlb_get_level(struct mmu_gather *tlb)
{
	/* The TTL field is only valid for the leaf entry. */
	if (tlb->freed_tables)
		return 0;

	if (tlb->cleared_ptes && !(tlb->cleared_pmds ||
				   tlb->cleared_puds ||
				   tlb->cleared_p4ds))
		return 3;

	if (tlb->cleared_pmds && !(tlb->cleared_ptes ||
				   tlb->cleared_puds ||
				   tlb->cleared_p4ds))
		return 2;

	if (tlb->cleared_puds && !(tlb->cleared_ptes ||
				   tlb->cleared_pmds ||
				   tlb->cleared_p4ds))
		return 1;

	return 0;
}