From mboxrd@z Thu Jan 1 00:00:00 1970 From: Johannes Weiner Subject: Re: [PATCH v3 08/10] sched/psi: consolidate cgroup_psi() Date: Wed, 24 Aug 2022 06:19:46 -0400 Message-ID: References: <20220824081829.33748-1-zhouchengming@bytedance.com> <20220824081829.33748-9-zhouchengming@bytedance.com> Mime-Version: 1.0 Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cmpxchg-org.20210112.gappssmtp.com; s=20210112; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc; bh=s0j2FSbwvmjKdvN+169nQdScgb7ALVuRcy3EIVLP7So=; b=DNYaMoJZfqTl1zDi6NfKZZNWYwlrnOiVUiJmcwR/S17jsY9fY/Ngvx8ghbhYAQYLBZ iosJQQDlAc2g+gT/jZ08h5QB8fcv4B7NVl0dzILk2YtT5fwGcE742npl8exZOAzm+0nu Gwl5Vid27xtbN7GAblRedWuh/ys90QXaZZvu+xQG6IAGfMTgGMhEc560XEWHesJI/Rn7 crl2l5Bcu1/NXTW+J9mMKFiWXjfZGppPM3A0EvsLASxxnw3/XvZ1IZs2+glf+3Xczq1v 7O/VRL7UEObRyKjXpOjb8Zi01VJ7UFfV02Bc6L/TKGpYLA8hihsJUgMZTgRx340ziDDD 2Apg== Content-Disposition: inline In-Reply-To: <20220824081829.33748-9-zhouchengming@bytedance.com> List-ID: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Chengming Zhou Cc: tj@kernel.org, mkoutny@suse.com, surenb@google.com, gregkh@linuxfoundation.org, corbet@lwn.net, mingo@redhat.com, peterz@infradead.org, songmuchun@bytedance.com, cgroups@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org On Wed, Aug 24, 2022 at 04:18:27PM +0800, Chengming Zhou wrote: > cgroup_psi() can't return psi_group for root cgroup, so we have many > open code "psi = cgroup_ino(cgrp) == 1 ? &psi_system : cgrp->psi". > > This patch move cgroup_psi() definition to , in which > we can return psi_system for root cgroup, so can handle all cgroups. > > Signed-off-by: Chengming Zhou Acked-by: Johannes Weiner