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[2620:137:e000::1:18]) by mx.google.com with ESMTPS id ru10-20020a17090b2bca00b001e19ff4fd24si23561957pjb.56.2022.06.07.22.10.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Jun 2022 22:10:47 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) client-ip=2620:137:e000::1:18; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20210112 header.b=oLvveGND; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 469203FE0D4; Tue, 7 Jun 2022 21:41:33 -0700 (PDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345356AbiFGRM1 (ORCPT + 99 others); Tue, 7 Jun 2022 13:12:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45528 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344733AbiFGRMZ (ORCPT ); Tue, 7 Jun 2022 13:12:25 -0400 Received: from mail-pf1-x433.google.com (mail-pf1-x433.google.com [IPv6:2607:f8b0:4864:20::433]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A341E17599; Tue, 7 Jun 2022 10:12:24 -0700 (PDT) Received: by mail-pf1-x433.google.com with SMTP id u2so16079448pfc.2; Tue, 07 Jun 2022 10:12:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=KLGsBB+R+Y7B7KHGHWSxqZCFvRmylkKZbWB3sA14MH0=; b=oLvveGNDVWzqyzP67UJA4WVF9pRh7nH3lgY7otES74HwEqlpsHB2KuZ73+XbuTnCG3 NQ0W4JcSrDbByxyqCSz5HcmIxSIhE+/6k4jTxOnoHZrf5frvi3VWiE5cnv68GWllEDaE /JaT35fAp+rhmFa9SnKCYlXe4HyWRnYlwAoFSrPib4PZQidKpNLVZPjfdQTwbGOjPGyg U/4wWGgbim+Dw47QFdLJHfYaWe2OgndP8vp9NbX00eP+SEdbgFn94eB7wuARP8te7BEE ihq3Cw1VCttarncMGtOKyi9Uw7SONKrvAQegMoFP7XAopWPALVkixmmK2h9s/hzVkgsw AWpA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:sender:date:from:to:cc:subject:message-id :references:mime-version:content-disposition:in-reply-to; bh=KLGsBB+R+Y7B7KHGHWSxqZCFvRmylkKZbWB3sA14MH0=; b=X/j6uRNeToCNB6/NFCDinA8Db9wIx+F9eaGwXzIIvJJ5XheEfRcnweWSnPOB3XuYbB HxV3K3izY1y2wYsywfTsKrZ02fUPMMNbKE3hLfL7wp8s97OL/AT3TQeyE6Lu/AYkxvoo 27116A1v6ds1j6t1de82Ng20ildPHWOKEaxn5RyE8z3lMxH6lkq089ZJ8f26ELDCrVvF qExmQXAhAemJFdg+LzSsovIbJwecIaGZPEpAyoB8L/IiKnM+Hif3Dayr3dSJrSqjxzbI EEE2rdbduO0734FsFeetHnSS26Ers0JmmWnSATcX8ojvPmPfpZEvBZP93wo1NoC90rkY Rklw== X-Gm-Message-State: AOAM533SQ0hT51MkU6IvfXNtTCT7AXT03O9G0qpjZMIHZM3j0igoYjv/ H41VqJclDKw0xgUvECcrG7Y= X-Received: by 2002:a65:6a15:0:b0:3fd:c66:eb3d with SMTP id m21-20020a656a15000000b003fd0c66eb3dmr22512042pgu.111.1654621943998; Tue, 07 Jun 2022 10:12:23 -0700 (PDT) Received: from localhost ([2620:10d:c090:400::4:fa4d]) by smtp.gmail.com with ESMTPSA id x5-20020a170902a38500b001640beeebf1sm12764857pla.268.2022.06.07.10.12.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Jun 2022 10:12:23 -0700 (PDT) Sender: Tejun Heo Date: Tue, 7 Jun 2022 07:12:22 -1000 From: Tejun Heo To: Chen Wandun Cc: lizefan.x@bytedance.com, hannes@cmpxchg.org, surenb@google.com, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] psi: dont alloc memory for psi by default Message-ID: References: <20220526122656.256274-1-chenwandun@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220526122656.256274-1-chenwandun@huawei.com> X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RDNS_NONE,SPF_HELO_NONE, T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, May 26, 2022 at 08:26:56PM +0800, Chen Wandun wrote: > Memory about struct psi_group is allocated by default for > each cgroup even if psi_disabled is true, in this case, these > allocated memory is waste, so alloc memory for struct psi_group > only when psi_disabled is false. > > Signed-off-by: Chen Wandun Applied to cgroup/for-5.20. Thanks. -- tejun