linux-kernel - Re: [RFC PATCH v2 3/4] percpu: Repurpose __percpu tag as a named address space qualifier

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Message-ID: <CAFULd4aG+9Sg==PyWcAgi_2ERWzs-arCv+67tuuA2ZMBkN1FMQ@mail.gmail.com>
Date: Mon, 12 Aug 2024 22:01:11 +0200
From: Uros Bizjak <ubizjak@...il.com>
To: Nadav Amit <nadav.amit@...il.com>
Cc: "open list:MEMORY MANAGEMENT" <linux-mm@...ck.org>, 
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Dennis Zhou <dennis@...nel.org>, 
	Tejun Heo <tj@...nel.org>, Christoph Lameter <cl@...ux.com>, Andy Lutomirski <luto@...nel.org>, 
	Ingo Molnar <mingo@...nel.org>, Brian Gerst <brgerst@...il.com>, 
	Denys Vlasenko <dvlasenk@...hat.com>, "H. Peter Anvin" <hpa@...or.com>, 
	Linus Torvalds <torvalds@...ux-foundation.org>, Peter Zijlstra <peterz@...radead.org>, 
	Thomas Gleixner <tglx@...utronix.de>, Borislav Petkov <bp@...en8.de>, 
	Luc Van Oostenryck <luc.vanoostenryck@...il.com>
Subject: Re: [RFC PATCH v2 3/4] percpu: Repurpose __percpu tag as a named
 address space qualifier

On Mon, Aug 12, 2024 at 9:12 PM Nadav Amit <nadav.amit@...il.com> wrote:
>
>
>
> > On 12 Aug 2024, at 14:57, Uros Bizjak <ubizjak@...il.com> wrote:
> >
> > +#define per_cpu_qual /* nothing */
>
> I wouldn't do that (the “/* nothing */“ part). It might cause a mess
> unnecessarily is used with a comment.

I took this /* nothing */ idea from the definition of BTF_TYPE_TAG in
compiler_types.h. But yes, it doesn't bring anything here so let's
remove it.

Thanks,
Uros.