On 10/21/19 7:48 AM, Bart Van Assche wrote: > 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? That's where I'm getting confused as well. I'm not against adding BPF functionality to the block layer, but this one seems a bit contrived. -- Jens Axboe
