static void smp_flush_tlb_range()

in kernel/smp.c [271:299]

• 23 lines of code
• 5 McCabe index (conditional complexity)

static void smp_flush_tlb_range(const struct cpumask *cmask, unsigned long start,
				unsigned long end)
{
	unsigned int cpuid;

	if (cpumask_empty(cmask))
		return;

	cpuid = get_cpu();

	if (cpumask_any_but(cmask, cpuid) >= nr_cpu_ids) {
		/* local cpu is the only cpu present in cpumask */
		if ((end - start) <= PAGE_SIZE)
			local_flush_tlb_page(NULL, start);
		else
			local_flush_tlb_range(NULL, start, end);
	} else {
		struct flush_tlb_data fd;

		fd.addr1 = start;
		fd.addr2 = end;

		if ((end - start) <= PAGE_SIZE)
			on_each_cpu_mask(cmask, ipi_flush_tlb_page, &fd, 1);
		else
			on_each_cpu_mask(cmask, ipi_flush_tlb_range, &fd, 1);
	}
	put_cpu();
}