On Tue, Jan 16, 2018 at 03:28:19PM +0100, Johannes Thumshirn wrote: > Add tracepoints for nvme command submission and completion. The tracepoints > are modeled after SCSI's trace_scsi_dispatch_cmd_start() and > trace_scsi_dispatch_cmd_done() tracepoints and fulfil a similar purpose, > namely a fast way to check which command is going to be queued into the HW or > Fabric driver and which command is completed again.
I like this very much, thanks for doing this. I think you could make the submission trace point tighter for PCI as Hannes was suggesting since an MMIO write can't fail, but doesn't look as doable for FC and RDMA.
