linux-kernel - Re: [PATCH v1 3/3] kernel/resource: cleanup and optimize iomem_is

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Date:   Thu, 12 Aug 2021 14:15:54 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     David Hildenbrand <david@...hat.com>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Dan Williams <dan.j.williams@...el.com>,
        Hanjun Guo <guohanjun@...wei.com>,
        "virtualization@...ts.linux-foundation.org" 
        <virtualization@...ts.linux-foundation.org>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>
Subject: Re: [PATCH v1 3/3] kernel/resource: cleanup and optimize
 iomem_is_exclusive()

On Thu, Aug 12, 2021 at 09:34:00AM +0200, David Hildenbrand wrote:
> On 12.08.21 09:14, Andy Shevchenko wrote:
> > On Thursday, August 12, 2021, David Hildenbrand <david@...hat.com
> > <mailto:david@...hat.com>> wrote:
> >     On 11.08.21 22:47, Andy Shevchenko wrote:
> >         On Wednesday, August 11, 2021, David Hildenbrand
> >         <david@...hat.com <mailto:david@...hat.com>
> >         <mailto:david@...hat.com <mailto:david@...hat.com>>> wrote:

> > Yes, it’s like micro optimization. If you want your way I suggest then
> > to add a macro
> > 
> > #define for_each_iomem_resource_child() \
> >   for (iomem_resource...)
> 
> I think the only thing that really makes sense would be something like this on top (not compiled yet):

Makes sense to me, thanks, go for it!

-- 
With Best Regards,
Andy Shevchenko