Re: [PATCH v3 1/3] resource: Add @flags to region_intersects()

From: Linus Torvalds
Date: Tue Dec 01 2015 - 12:19:12 EST


On Tue, Dec 1, 2015 at 9:13 AM, Borislav Petkov <bp@xxxxxxxxx> wrote:
>
> Oh sure, I didn't mean you. I was simply questioning that whole
> identify-resource-by-its-name approach. And that came with:
>
> 67cf13ceed89 ("x86: optimize resource lookups for ioremap")
>
> I just think it is silly and that we should be identifying resource
> things in a more robust way.

I could easily imagine just adding a IORESOURCE_RAM flag (or SYSMEM or
whatever). That sounds sane. I agree that comparing the string is
ugly.

> Btw, the ->name thing in struct resource has been there since a *long*
> time

It's pretty much always been there. It is indeed meant for things
like /proc/iomem etc, and as a debug aid when printing conflicts,
yadda yadda. Just showing the numbers is usually useless for figuring
out exactly *what* something conflicts with.

Linus
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