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[23.128.96.18]) by mx.google.com with ESMTP id d7si442315pfv.212.2021.05.06.07.42.01; Thu, 06 May 2021 07:42:14 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234879AbhEFOjx (ORCPT + 99 others); Thu, 6 May 2021 10:39:53 -0400 Received: from mail.kernel.org ([198.145.29.99]:37190 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234759AbhEFOjx (ORCPT ); Thu, 6 May 2021 10:39:53 -0400 Received: from disco-boy.misterjones.org (disco-boy.misterjones.org [51.254.78.96]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 26FA0610A0; Thu, 6 May 2021 14:38:55 +0000 (UTC) Received: from 78.163-31-62.static.virginmediabusiness.co.uk ([62.31.163.78] helo=why.misterjones.org) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1lef9Q-00BGEd-UW; Thu, 06 May 2021 15:38:53 +0100 Date: Thu, 06 May 2021 15:38:52 +0100 Message-ID: <87mtt8q64j.wl-maz@kernel.org> From: Marc Zyngier To: Peter Zijlstra Cc: tglx@linutronix.de, mingo@kernel.org, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, bristot@redhat.com, bsingharora@gmail.com, pbonzini@redhat.com, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, riel@surriel.com, hannes@cmpxchg.org Subject: Re: [PATCH 4/6] kvm: Select SCHED_INFO instead of TASK_DELAY_ACCT In-Reply-To: <20210505111525.187225172@infradead.org> References: <20210505105940.190490250@infradead.org> <20210505111525.187225172@infradead.org> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/27.1 (x86_64-pc-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-SA-Exim-Connect-IP: 62.31.163.78 X-SA-Exim-Rcpt-To: peterz@infradead.org, tglx@linutronix.de, mingo@kernel.org, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, bristot@redhat.com, bsingharora@gmail.com, pbonzini@redhat.com, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, riel@surriel.com, hannes@cmpxchg.org X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 05 May 2021 11:59:44 +0100, Peter Zijlstra wrote: > > AFAICT KVM only relies on SCHED_INFO. Nothing uses the p->delays data > that belongs to TASK_DELAY_ACCT. > > Signed-off-by: Peter Zijlstra (Intel) > --- > arch/arm64/kvm/Kconfig | 5 +---- > arch/x86/kvm/Kconfig | 5 +---- > 2 files changed, 2 insertions(+), 8 deletions(-) Acked-by: Marc Zyngier M. -- Without deviation from the norm, progress is not possible.