From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4C3FB130E3B; Tue, 9 Apr 2024 13:47:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712670467; cv=none; b=K98w4w0cjVGsQh3huPpMryCrdGBDs6KukNgHGt0hvTegZ9l9HOW3T7f5si1dCkpoxv82rZBXEgou3ZkGqc14Cb0guJp9V9WrS7zWVahAg9IlLGeStDSjTFb/swedRQY7KX0SUys6QyOCG76VbxhXDXHz6/7fT4MM9/iI4TY8h0o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712670467; c=relaxed/simple; bh=cgXhwNqAUlv7uKKki90yp7H4uGeRWUSAoQWHH9FoDUY=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=Aq46K4YsEh/nooyjwJl4bSr2HJvViqePE55B/cu0LmJ7X38cMyuY3IAhIl8p5ZKwGNi15p2heFiXMIKp9qeC3ax2jcL8lq6b5OppIfp57jnxWguYEDiM97QHReZxTGMCAgeRzeicGvOYm90p/CRw7fgmHk+MPJpOFoBYiuSXN50= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=GqQ3pwPp; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="GqQ3pwPp" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 51B72C433F1; Tue, 9 Apr 2024 13:47:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1712670466; bh=cgXhwNqAUlv7uKKki90yp7H4uGeRWUSAoQWHH9FoDUY=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=GqQ3pwPpoETGT/zEAhvXKp0U2TRxKtJRJtPHXw8CE2X5dDNx3EayRhtuT1IW4MdWC 8pmS2sbX5GoJVyF9sBmiJaHKzHm7FIxNeBKIKZwlQxPi24Rt0zcNKsi90POcZ1P1Q2 OJuGrGahSuNw080QuesKgxOlf08SX+zUzM6S4FiYfOpj+b/YUi/HShEocMAqHXOxMA VIINHZJiKb83JNxNa+2BOO59hZvYSbOMk3xhcYmJ5PFowvtwLGwxgGvOHh3RZkTC1R +Mpc+2P/0EmOuofMuVDxI8gxxaRUZNYwfE7H6q4iV2PdcDmW8VAf510DIExeSXZACY TsJvyd45opZ3A== Date: Tue, 9 Apr 2024 10:47:43 -0300 From: Arnaldo Carvalho de Melo To: Geert Uytterhoeven Cc: Namhyung Kim , Ian Rogers , Kan Liang , Jiri Olsa , Adrian Hunter , Peter Zijlstra , Ingo Molnar , LKML , linux-perf-users@vger.kernel.org Subject: Re: [PATCHSET 0/9] Sync tools headers with the kernel source Message-ID: References: <20240408185520.1550865-1-namhyung@kernel.org> Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: 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 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@linux-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