On 2020-12-08 13:13:19 [+0000], Christoph Hellwig wrote: > On Mon, Dec 07, 2020 at 04:52:57PM -0700, Jens Axboe wrote: > > On 12/4/20 12:13 PM, Sebastian Andrzej Siewior wrote: > > > Controllers with multiple queues have their IRQ-handelers pinned to a > > > CPU. The core shouldn't need to complete the request on a remote CPU. > > > > > > Remove this case and always raise the softirq to complete the request. > > > > I don't like this one at all, it'll add a softirq jump for the fast path > > for eg nvme devices. > > For the real fast path, that is either a polled queue or irq driven > queues that only map to a single CPU we are never reaching this code, > so I'm not too worried. Not that I'd complain about numbers, preferably > in the commit log. Did Daniel provide all the numbers you/Jens were looking for or do we still wait for some? Sebastian
