From mboxrd@z Thu Jan 1 00:00:00 1970 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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id E7375C433F5 for ; Thu, 27 Jan 2022 13:36:51 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id A8A766B0072; Thu, 27 Jan 2022 08:36:50 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 96F256B00A0; Thu, 27 Jan 2022 08:36:50 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 6ACFE6B0073; Thu, 27 Jan 2022 08:36:50 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0160.hostedemail.com [216.40.44.160]) by kanga.kvack.org (Postfix) with ESMTP id 494296B0071 for ; Thu, 27 Jan 2022 08:36:50 -0500 (EST) Received: from smtpin22.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 0CDF58E3E1 for ; Thu, 27 Jan 2022 13:36:50 +0000 (UTC) X-FDA: 79076167380.22.A82ED92 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) by imf18.hostedemail.com (Postfix) with ESMTP id 449091C0010 for ; Thu, 27 Jan 2022 13:36:49 +0000 (UTC) Date: Thu, 27 Jan 2022 14:36:45 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1643290607; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=fjY0dW0yhGN0PJkMP5xju7/MogIUEUa6wSeDiVxCBYQ=; b=TQvEJLjphAdoWfSbcdBCOZX31ZONcIpQB2O0UTEwb1dRhZHwHS7E1WBElY23hM2520+D7W bQ6xksTWXPLUgUZiAr6hz2SNUTuJXERZtK0PMP4r+aMKRjxL+rGAjvYfOVVUycsNtJuYTJ Lpj/p4GT51eAKZgrtjaGga4oqsL/GoVtNn18ikMQn8wfGl+J4YKRa2Ph1De9jgC/Dx23HM xTRAcaNPDEJWp/fnSoDMMCJOd6hgNHvY0OLzQJbIyW8Cy4T+h5MHxhAaMHwZEmv5tKh29x Fr0YHcyesqAc06QqjBakve7Q4rGMIDPv5sz9fne1nxlnI4kgdh1lAGH3Y7Dw9w== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1643290607; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=fjY0dW0yhGN0PJkMP5xju7/MogIUEUa6wSeDiVxCBYQ=; b=Wob4kE+EqwyVSQfI16o+1cEpXLMB/VEr40ymUnoaYeIs8fdFlpi1/jtoFaQuIK2R39k//0 MsGgjs/54gfF1JAg== From: Sebastian Andrzej Siewior To: Michal =?utf-8?Q?Koutn=C3=BD?= Cc: Michal Hocko , cgroups@vger.kernel.org, linux-mm@kvack.org, Andrew Morton , Johannes Weiner , Peter Zijlstra , Thomas Gleixner , Vladimir Davydov , Waiman Long Subject: Re: [PATCH 1/4] mm/memcg: Disable threshold event handlers on PREEMPT_RT Message-ID: References: <20220125164337.2071854-1-bigeasy@linutronix.de> <20220125164337.2071854-2-bigeasy@linutronix.de> <20220126150455.GC2516@blackbody.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable In-Reply-To: <20220126150455.GC2516@blackbody.suse.cz> X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 449091C0010 X-Rspam-User: nil Authentication-Results: imf18.hostedemail.com; dkim=pass header.d=linutronix.de header.s=2020 header.b=TQvEJLjp; dkim=pass header.d=linutronix.de header.s=2020e header.b=Wob4kE+E; dmarc=pass (policy=none) header.from=linutronix.de; spf=pass (imf18.hostedemail.com: domain of bigeasy@linutronix.de designates 193.142.43.55 as permitted sender) smtp.mailfrom=bigeasy@linutronix.de X-Stat-Signature: om3xo8jnzdm9x3c3d4jy9ff3u51noj7j X-HE-Tag: 1643290609-909088 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000871, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 2022-01-26 16:04:55 [+0100], Michal Koutn=C3=BD wrote: > On Wed, Jan 26, 2022 at 03:45:20PM +0100, Sebastian Andrzej Siewior wrote: > > If that is not good, let me think of something else=E2=80=A6 >=20 > I like ifdefing just the static branch enablement. *wink* That would be one way but it is not obvious that the eventfd/ signal part of the code is not invoked. And why keep dead code around? > Michal Sebastian