Re: napi_busy_poll

[Olivier Langlois <olivier@trillion01.com>]

On Wed, 2022-02-16 at 20:14 +0800, Hao Xu wrote:
> 
> > 
> Hi Olivier,
> I've write something to express my idea, it would be great if you can
> try it.
> It's totally untested and only does polling in sqthread, won't be
> hard
> to expand it to cqring_wait. My original idea is to poll all the napi
> device but seems that may be not efficient. so for a request, just
> do napi polling for one napi.
> There is still one problem: when to delete the polled NAPIs.
> 
I think that I have found an elegant solution to the remaining problem!

Are you ok if I send out a patch to Jens that contains your code if I
put your name as a co-author?
> 
> 
> +       ne = kmalloc(sizeof(*ne), GFP_KERNEL);
> +       if (!ne)
> +               return;
> +
> +       list_add_tail(&ne->list, &ctx->napi_list);
> +}
ne->napi_id is not initialized before returning from the function!