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Date: Tue, 9 Apr 2024 10:47:43 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: Geert Uytterhoeven <geert@...ux-m68k.org>
Cc: Namhyung Kim <namhyung@...nel.org>, Ian Rogers <irogers@...gle.com>,
	Kan Liang <kan.liang@...ux.intel.com>, Jiri Olsa <jolsa@...nel.org>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...nel.org>, LKML <linux-kernel@...r.kernel.org>,
	linux-perf-users@...r.kernel.org
Subject: Re: [PATCHSET 0/9] Sync tools headers with the kernel source

On Tue, Apr 09, 2024 at 09:15:02AM +0200, Geert Uytterhoeven wrote:
> Hi Namhyung, Arnaldo,
> 
> On Mon, Apr 8, 2024 at 8:55 PM Namhyung Kim <namhyung@...nel.org> wrote:
> > I'm gonna carry these changes on the perf tools tree.  I'll update the
> > vhost.h once it lands on the mainline.
> >
> > This is the full explanation from Arnaldo:
> >
> > There used to be no copies, with tools/ code using kernel headers
> > directly. From time to time tools/perf/ broke due to legitimate kernel
> > hacking. At some point Linus complained about such direct usage. Then we
> > adopted the current model.
> 
> Do you have a reference to that?

I would have to do a search on the mailing list to find the exact
exchange, this is from memory and from people asking this repeatedly.

Ingo replied with reasons similar to the ones I use in this canned
explanation when sending the notice of updating the files.

- Arnaldo

> I was gonna reply to [PATCH 8/9] (where I was CCed) with "why can't
> you use the original include file directly?", then read the cover letter.
> 
> Thanks!
> 
> Gr{oetje,eeting}s,
> 
>                         Geert
> 
> 
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org
> 
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
>                                 -- Linus Torvalds

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