if (config->alloc == RING_BUFFER_ALLOC_PER_CPU)
add_timer_on(&buf->switch_timer, buf->backend.cpu);
else
add_timer(&buf->switch_timer);
if (config->alloc == RING_BUFFER_ALLOC_PER_CPU)
add_timer_on(&buf->switch_timer, buf->backend.cpu);
else
add_timer(&buf->switch_timer);