Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C5E00C05027 for ; Mon, 23 Jan 2023 11:05:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231701AbjAWLFJ (ORCPT ); Mon, 23 Jan 2023 06:05:09 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44762 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230040AbjAWLFF (ORCPT ); Mon, 23 Jan 2023 06:05:05 -0500 Received: from gentwo.de (gentwo.de [161.97.139.209]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0EB8417CC2 for ; Mon, 23 Jan 2023 03:05:02 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gentwo.de; s=default; t=1674471900; bh=UKyfe3d7b7mP4eV4vd8e4mLVQeCRiO9ysqAePajzBcw=; h=Date:From:To:cc:Subject:In-Reply-To:References:From; b=K5yqjDHYDqwVzbVzMoHhvcgNvNnFmmJksI1ph5S9VYV7pBzHu57PTjNVZtV3AK8+m 3TzHKXxYBIf4DluizV1eXrSd6ax9reabe/PprnHs8ez2wppDgAdYI96yYWD7esRX0z kvr9jqSnsY6Oky91dgtS02B9QASQJ04S4qO4RSm0zsA8eBrtJWa/a6LSBb99Jsk9fN nSo6cvNp4pp8HWkbldtlbviYu80jUJIuTYEeP4s0rQkXdpUpbbfpA2rhshztYak6KQ 5bcB/3Zt0hCSaaXIMkDXlav/XspR9u0/ZLn3JjlHeI9Pw1HrxC8lVWTG4ZQX/6xTUH lk+eqL9eRl1jg== Received: by gentwo.de (Postfix, from userid 1001) id E2E79B00229; Mon, 23 Jan 2023 12:05:00 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by gentwo.de (Postfix) with ESMTP id E1544B001A1; Mon, 23 Jan 2023 12:05:00 +0100 (CET) Date: Mon, 23 Jan 2023 12:05:00 +0100 (CET) From: Christoph Lameter To: Hyeonggon Yoo <42.hyeyoo@gmail.com> cc: Vlastimil Babka , Andrew Morton , Pekka Enberg , David Rientjes , Joonsoo Kim , Roman Gushchin , Ingo Molnar , Johannes Weiner , Michal Hocko , Shakeel Butt , Muchun Song , Matthew Wilcox , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Peter Zijlstra , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , Daniel Bristot de Oliveira , Valentin Schneider , Dennis Zhou , Tejun Heo Subject: Re: [PATCH mm-unstable] lib/Kconfig.debug: do not enable DEBUG_PREEMPT by default In-Reply-To: Message-ID: References: <20230121033942.350387-1-42.hyeyoo@gmail.com> <86e68d3b-b029-5e82-5bbc-e0ccc2ae1d36@suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, 21 Jan 2023, Hyeonggon Yoo wrote: > Whew, I still get confused about who to Cc, thanks for adding them. > and I also didn't include the percpu memory allocator maintainers, who may > have opinion. let's add them too. Well looks ok to me. However, I thought most distro kernels disable PREEMPT anyways for performance reasons? So DEBUG_PREEMPT should be off as well. I guess that is why this has not been an issue so far.