unsigned long ring_buffer_entries_cpu(struct trace_buffer *buffer, int cpu)
{
	struct ring_buffer_per_cpu *cpu_buffer;

	if (!cpumask_test_cpu(cpu, buffer->cpumask))
		return 0;

	cpu_buffer = buffer->buffers[cpu];

	return rb_num_of_entries(cpu_buffer);
}
unsigned long ring_buffer_entries_cpu(struct trace_buffer *buffer, int cpu)
{
	struct ring_buffer_per_cpu *cpu_buffer;

	if (!cpumask_test_cpu(cpu, buffer->cpumask))
		return 0;

	cpu_buffer = buffer->buffers[cpu];

	return rb_num_of_entries(cpu_buffer);
}