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 X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3F986C433ED for ; Wed, 14 Apr 2021 17:26:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 16ACE61179 for ; Wed, 14 Apr 2021 17:26:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349010AbhDNR01 (ORCPT ); Wed, 14 Apr 2021 13:26:27 -0400 Received: from mga09.intel.com ([134.134.136.24]:47069 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234215AbhDNR01 (ORCPT ); Wed, 14 Apr 2021 13:26:27 -0400 IronPort-SDR: gGPiRgeYxKTu8ZDXfrkypIS182dZKfqBeTGCvKhvNHUp5H9Q2gsEDvUwTxmeC0URdGxtyJosfY JEZoTv13UOhg== X-IronPort-AV: E=McAfee;i="6200,9189,9954"; a="194799797" X-IronPort-AV: E=Sophos;i="5.82,222,1613462400"; d="scan'208";a="194799797" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Apr 2021 10:26:05 -0700 IronPort-SDR: aCgK6sJ6v3Sd9JwBKp2NvJfbWrjZ03o3vlE6FpkJ3IC5d9jYjwIBCCIuKlRQYoMYNH81qdJ5CV qTbLp4TDfmGg== X-IronPort-AV: E=Sophos;i="5.82,222,1613462400"; d="scan'208";a="522065580" Received: from tassilo.jf.intel.com ([10.54.74.11]) by fmsmga001-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Apr 2021 10:26:03 -0700 Date: Wed, 14 Apr 2021 10:26:02 -0700 From: Andi Kleen To: Waiman Long Cc: Alex Kogan , linux@armlinux.org.uk, Peter Zijlstra , Ingo Molnar , will.deacon@arm.com, arnd@arndb.de, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, tglx@linutronix.de, bp@alien8.de, hpa@zytor.com, x86@kernel.org, guohanjun@huawei.com, jglauber@marvell.com, steven.sistare@oracle.com, daniel.m.jordan@oracle.com, dave.dice@oracle.com Subject: Re: [External] : Re: [PATCH v14 4/6] locking/qspinlock: Introduce starvation avoidance into CNA Message-ID: <20210414172602.GW3762101@tassilo.jf.intel.com> References: <20210401153156.1165900-1-alex.kogan@oracle.com> <20210401153156.1165900-5-alex.kogan@oracle.com> <87mtu2vhzz.fsf@linux.intel.com> <4a9dbfa7-db68-a2dc-9018-a5b74f0f421c@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4a9dbfa7-db68-a2dc-9018-a5b74f0f421c@redhat.com> Precedence: bulk List-ID: X-Mailing-List: linux-arch@vger.kernel.org > The CNA code, if enabled, will be in vmlinux, not in a kernel module. As a > result, I think a module parameter will be no different from a kernel > command line parameter in this regard. You can still change it in /sys at runtime, even if it's in the vmlinux. -Andi