int test_bit(int nr, const void *addr)
{
	int *a;
	int mask;
	int nr_5;
	int nr_1f;
	a = (int *)addr;
	nr_5 = nr >> 5;
	a += nr_5;
	nr_1f = nr & 0x1f;
	mask = 1 << nr_1f;
	if (mask & *a)
		return 1;
	else
		return 0;
}

struct {
	struct { int disabled; } *data[1];
} global_trace;

struct {
	unsigned long bits[1];
} tracing_cpumask;

foo()
{
	int cpu;
	for (cpu = 0; cpu < 1; cpu++) {
		if (test_bit(cpu, tracing_cpumask.bits))
			inc(&global_trace.data[cpu]->disabled);
		if (!test_bit(cpu, tracing_cpumask.bits))
			dec(&global_trace.data[cpu]->disabled);
	}
}