ring_buffer_read_start
ring_buffer_read_start(struct trace_buffer *buffer, int cpu, gfp_t flags);
EXPORT_SYMBOL_GPL(ring_buffer_read_start);
ring_buffer_read_start(iter->array_buffer->buffer,
ring_buffer_read_start(iter->array_buffer->buffer,
ring_buffer_read_start(iter.array_buffer->buffer,
ring_buffer_read_start(iter.array_buffer->buffer,
iter->rb_iter = ring_buffer_read_start(iter->remote->trace_buffer, cpu, GFP_KERNEL);
iter->rb_iters[cpu] = ring_buffer_read_start(iter->remote->trace_buffer, cpu,