On 10/21/19 6:42 AM, Hou Tao wrote: > Your suggestion is much simpler, so there will be no need for adding a new > program type, and all things need to be done are adding a raw tracepoint, > moving bpf_ccpu into struct request, and letting a BPF program to modify it. blk-mq already supports processing completions on the CPU that submitted a request so it's not clear to me why any changes in the block layer are being proposed for redirecting I/O completions? Thanks, Bart.