From patchwork Wed Nov 20 16:42:27 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marc Zyngier X-Patchwork-Id: 11254501 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B64F0186D for ; Wed, 20 Nov 2019 16:51:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 926C92088F for ; Wed, 20 Nov 2019 16:51:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574268706; bh=VD7OF9BdAXcdpzqeT5zGi1g2O1icdGQz/71IQSjNiA0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=TtOZdEpq84CHouSDSWvxTzg7N6Ncd8C2ZgDeVfqkSprklz7jZnqirgQziKf+OWfQz Npm8NoiwRTcqc3Fjkckm166DEkPknnV1Xe8CiTRfCTeEJc+82+Tsyl4nC6z/9HeBwP FFKQP5uLOhYxZIsokF9py8LkgZwgvJ/kgisztD+A= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732786AbfKTQvp (ORCPT ); Wed, 20 Nov 2019 11:51:45 -0500 Received: from inca-roads.misterjones.org ([213.251.177.50]:37414 "EHLO inca-roads.misterjones.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729818AbfKTQvp (ORCPT ); Wed, 20 Nov 2019 11:51:45 -0500 Received: from 78.163-31-62.static.virginmediabusiness.co.uk ([62.31.163.78] helo=why.lan) by cheepnis.misterjones.org with esmtpsa (TLSv1.2:DHE-RSA-AES128-GCM-SHA256:128) (Exim 4.80) (envelope-from ) id 1iXT4K-0007RI-T9; Wed, 20 Nov 2019 17:43:04 +0100 From: Marc Zyngier To: Paolo Bonzini , =?utf-8?b?UmFkaW0gS3LEjW3DocWZ?= Cc: Alexander Graf , Andrew Jones , Christian Borntraeger , Christoffer Dall , Eric Auger , Heinrich Schuchardt , Julien Grall , Mark Rutland , Sebastian Andrzej Siewior , Steven Price , Thomas Gleixner , Will Deacon , Zenghui Yu , James Morse , Julien Thierry , Suzuki K Poulose , linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu Subject: [PATCH 13/22] KVM: arm64: Select TASK_DELAY_ACCT+TASKSTATS rather than SCHEDSTATS Date: Wed, 20 Nov 2019 16:42:27 +0000 Message-Id: <20191120164236.29359-14-maz@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191120164236.29359-1-maz@kernel.org> References: <20191120164236.29359-1-maz@kernel.org> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 62.31.163.78 X-SA-Exim-Rcpt-To: pbonzini@redhat.com, rkrcmar@redhat.com, graf@amazon.com, drjones@redhat.com, borntraeger@de.ibm.com, christoffer.dall@arm.com, eric.auger@redhat.com, xypron.glpk@gmx.de, julien.grall@arm.com, mark.rutland@arm.com, bigeasy@linutronix.de, steven.price@arm.com, tglx@linutronix.de, will@kernel.org, yuzenghui@huawei.com, james.morse@arm.com, julien.thierry.kdev@gmail.com, suzuki.poulose@arm.com, linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on cheepnis.misterjones.org); SAEximRunCond expanded to false Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org From: Steven Price SCHEDSTATS requires DEBUG_KERNEL (and PROC_FS) and therefore isn't a good choice for enabling the scheduling statistics required for stolen time. Instead match the x86 configuration and select TASK_DELAY_ACCT and TASKSTATS. This adds the dependencies of NET && MULTIUSER for arm64 KVM. Suggested-by: Marc Zyngier Fixes: 8564d6372a7d ("KVM: arm64: Support stolen time reporting via shared structure") Signed-off-by: Steven Price Signed-off-by: Marc Zyngier --- arch/arm64/kvm/Kconfig | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/arm64/kvm/Kconfig b/arch/arm64/kvm/Kconfig index d8b88e40d223..a475c68cbfec 100644 --- a/arch/arm64/kvm/Kconfig +++ b/arch/arm64/kvm/Kconfig @@ -21,6 +21,8 @@ if VIRTUALIZATION config KVM bool "Kernel-based Virtual Machine (KVM) support" depends on OF + # for TASKSTATS/TASK_DELAY_ACCT: + depends on NET && MULTIUSER select MMU_NOTIFIER select PREEMPT_NOTIFIERS select HAVE_KVM_CPU_RELAX_INTERCEPT @@ -39,7 +41,8 @@ config KVM select IRQ_BYPASS_MANAGER select HAVE_KVM_IRQ_BYPASS select HAVE_KVM_VCPU_RUN_PID_CHANGE - select SCHEDSTATS + select TASKSTATS + select TASK_DELAY_ACCT ---help--- Support hosting virtualized guest machines. We don't support KVM with 16K page tables yet, due to the multiple