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=-0.8 required=3.0 tests=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 A833EC10F14 for ; Thu, 3 Oct 2019 20:40:53 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 67748207FF for ; Thu, 3 Oct 2019 20:40:53 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 67748207FF Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.ibm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 1C7428E0006; Thu, 3 Oct 2019 16:40:53 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 19C316B000A; Thu, 3 Oct 2019 16:40:53 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 08AC48E0006; Thu, 3 Oct 2019 16:40:53 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0018.hostedemail.com [216.40.44.18]) by kanga.kvack.org (Postfix) with ESMTP id DE70E6B0007 for ; Thu, 3 Oct 2019 16:40:52 -0400 (EDT) Received: from smtpin03.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with SMTP id 84B2082437C9 for ; Thu, 3 Oct 2019 20:40:52 +0000 (UTC) X-FDA: 76003642344.03.wool52_24a7786d5801a X-HE-Tag: wool52_24a7786d5801a X-Filterd-Recvd-Size: 6925 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) by imf29.hostedemail.com (Postfix) with ESMTP for ; Thu, 3 Oct 2019 20:40:51 +0000 (UTC) Received: from pps.filterd (m0098394.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x93Kawvo021258; Thu, 3 Oct 2019 16:40:25 -0400 Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com with ESMTP id 2vdqd29pd0-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 03 Oct 2019 16:40:25 -0400 Received: from m0098394.ppops.net (m0098394.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.27/8.16.0.27) with SMTP id x93KaxC5021544; Thu, 3 Oct 2019 16:40:24 -0400 Received: from ppma02wdc.us.ibm.com (aa.5b.37a9.ip4.static.sl-reverse.com [169.55.91.170]) by mx0a-001b2d01.pphosted.com with ESMTP id 2vdqd29pcb-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 03 Oct 2019 16:40:24 -0400 Received: from pps.filterd (ppma02wdc.us.ibm.com [127.0.0.1]) by ppma02wdc.us.ibm.com (8.16.0.27/8.16.0.27) with SMTP id x93KYnnu029841; Thu, 3 Oct 2019 20:40:23 GMT Received: from b03cxnp08026.gho.boulder.ibm.com (b03cxnp08026.gho.boulder.ibm.com [9.17.130.18]) by ppma02wdc.us.ibm.com with ESMTP id 2v9y58q4mu-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 03 Oct 2019 20:40:23 +0000 Received: from b03ledav005.gho.boulder.ibm.com (b03ledav005.gho.boulder.ibm.com [9.17.130.236]) by b03cxnp08026.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x93KeLcl61341986 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 3 Oct 2019 20:40:21 GMT Received: from b03ledav005.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 377AFBE054; Thu, 3 Oct 2019 20:40:21 +0000 (GMT) Received: from b03ledav005.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 91CACBE04F; Thu, 3 Oct 2019 20:40:12 +0000 (GMT) Received: from leobras.br.ibm.com (unknown [9.18.235.190]) by b03ledav005.gho.boulder.ibm.com (Postfix) with ESMTP; Thu, 3 Oct 2019 20:40:12 +0000 (GMT) Message-ID: <3598584cc4b829e9c290b6dab89fb148528e4f72.camel@linux.ibm.com> Subject: Re: [PATCH v5 10/11] mm/Kconfig: Adds config option to track lockless pagetable walks From: Leonardo Bras To: Peter Zijlstra Cc: Song Liu , Michal Hocko , "Dmitry V. Levin" , Keith Busch , linux-mm@kvack.org, Paul Mackerras , Christoph Lameter , Ira Weiny , Dan Williams , Elena Reshetova , linux-arch@vger.kernel.org, Santosh Sivaraj , Davidlohr Bueso , "Aneesh Kumar K.V" , Bartlomiej Zolnierkiewicz , Mike Rapoport , Jason Gunthorpe , Vlastimil Babka , Mahesh Salgaonkar , Andrey Ryabinin , Alexey Dobriyan , Ingo Molnar , Andrea Arcangeli , Ralph Campbell , Arnd Bergmann , Jann Horn , John Hubbard , Jesper Dangaard Brouer , Nicholas Piggin , =?ISO-8859-1?Q?J=E9r=F4me?= Glisse , Mathieu Desnoyers , kvm-ppc@vger.kernel.org, Thomas Gleixner , Reza Arbab , Allison Randal , Christian Brauner , Greg Kroah-Hartman , linux-kernel@vger.kernel.org, Logan Gunthorpe , Souptick Joarder , Andrew Morton , linuxppc-dev@lists.ozlabs.org, Roman Gushchin , "Kirill A. Shutemov" , Al Viro Date: Thu, 03 Oct 2019 17:40:11 -0300 In-Reply-To: <20191003074432.GO4536@hirez.programming.kicks-ass.net> References: <20191003013325.2614-1-leonardo@linux.ibm.com> <20191003013325.2614-11-leonardo@linux.ibm.com> <20191003074432.GO4536@hirez.programming.kicks-ass.net> Content-Type: multipart/signed; micalg="pgp-sha256"; protocol="application/pgp-signature"; boundary="=-cFtUj1Ho01ANPCDPn5bA" User-Agent: Evolution 3.30.5 (3.30.5-1.fc29) MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-10-03_07:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1908290000 definitions=main-1910030167 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: --=-cFtUj1Ho01ANPCDPn5bA Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Thu, 2019-10-03 at 09:44 +0200, Peter Zijlstra wrote: > This shouldn't be a user visible option at all. Either the arch needs > it and selects it or not. You are right. I will do that on v6. 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