int test_bit(int nr, const void *addr)
{
	int *a = (int *)addr;
	int mask;
	a += nr >> 5;
	mask = 1 << (nr & 0x1f);
	return ((mask & *a) != 0);
}
struct trace_array_cpu {
	int disabled;
};
struct {
	struct trace_array_cpu *data[1];
} global_trace;
struct {
	unsigned long bits[1];
} tracing_cpumask;
tracing_cpumask_write()
{
	int cpu;
	for (cpu = 0; cpu < 1; cpu++) {
		if (test_bit(cpu, tracing_cpumask.bits))
			atomic_inc(&global_trace.data[cpu]->disabled);
		if (!test_bit(cpu, tracing_cpumask.bits))
			atomic_dec(&global_trace.data[cpu]->disabled);
	}
}