On Tue, Mar 26, 2019 at 09:19:25PM +0800, Yufen Yu wrote: > For now, we just trace plug for single queue device or drivers > provide .commit_rqs, and have not trace plug for multiple queues > device. But, unplug events will be recorded when call > blk_mq_flush_plug_list(). Then, trace events will be asymmetrical, > just have unplug and without plug. > > This patch add trace plug and unplug for multiple queues device in > blk_mq_make_request(). After that, we can accurately trace plug and > unplug for multiple queues. > > Signed-off-by: Yufen Yu <yuyufen@xxxxxxxxxx> Looks good, Reviewed-by: Christoph Hellwig <hch@xxxxxx>
