Re: [PATCH 33/54] net: ethernet: replace bitmap_weight with bitmap_weight_{eq,gt,ge,lt,le} for mellanox

[Yury Norov]

On Mon, Jan 24, 2022 at 02:48:12PM +0200, Andy Shevchenko wrote:
> On Sun, Jan 23, 2022 at 10:39:04AM -0800, Yury Norov wrote:
> > Mellanox code uses bitmap_weight() to compare the weight of bitmap with
> > a given number. We can do it more efficiently with bitmap_weight_{eq, ...}
> > because conditional bitmap_weight may stop traversing the bitmap earlier,
> > as soon as condition is met.
> 
> > -	if (port <= 0 || port > m)
> > +	if (port <= 0 || bitmap_weight_lt(actv_ports.ports, dev->caps.num_ports, port))
> >  		return -EINVAL;
> 
> Can we eliminate now the port <= 0 check? Or at least make it port == 0?

The port is a parameter of exported function. I'd rather not take this risk.
Even if it makes sense, it should be a separate patch anyways.