From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751962AbdJDGvH (ORCPT ); Wed, 4 Oct 2017 02:51:07 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:33714 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751234AbdJDGvC (ORCPT ); Wed, 4 Oct 2017 02:51:02 -0400 Subject: Re: [PATCH v3 00/20] Speculative page faults To: Alexei Starovoitov Cc: Paul McKenney , Peter Zijlstra , Andrew Morton , kirill@shutemov.name, Andi Kleen , Michal Hocko , dave@stgolabs.net, Jan Kara , Matthew Wilcox , Benjamin Herrenschmidt , Michael Ellerman , Paul Mackerras , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , Will Deacon , Sergey Senozhatsky , "linux-kernel@vger.kernel.org" , linux-mm , haren@linux.vnet.ibm.com, Anshuman Khandual , npiggin@gmail.com, bsingharora@gmail.com, Tim Chen , linuxppc-dev@lists.ozlabs.org, "x86@kernel.org" References: From: Laurent Dufour Date: Wed, 4 Oct 2017 08:50:49 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.3.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 x-cbid: 17100406-0040-0000-0000-000003DF3A1E X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17100406-0041-0000-0000-000025E0A339 Message-Id: <670c9a22-cf5b-3fab-b2f2-a72fbd4451c8@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-10-04_03:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1707230000 definitions=main-1710040099 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 25/09/2017 18:27, Alexei Starovoitov wrote: > On Mon, Sep 18, 2017 at 12:15 AM, Laurent Dufour > wrote: >> Despite the unprovable lockdep warning raised by Sergey, I didn't get any >> feedback on this series. >> >> Is there a chance to get it moved upstream ? > > what is the status ? > We're eagerly looking forward for this set to land, > since we have several use cases for tracing that > will build on top of this set as discussed at Plumbers. Hi Alexei, Based on Plumber's note [1], it sounds that the use case is tied to the BPF tracing where a call tp find_vma() call will be made on a process's context to fetch user space's symbols. Am I right ? Is the find_vma() call made in the context of the process owning the mm struct ? Thanks, Laurent. [1] https://etherpad.openstack.org/p/LPC2017_Tracing) From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-it0-f70.google.com (mail-it0-f70.google.com [209.85.214.70]) by kanga.kvack.org (Postfix) with ESMTP id BFD116B0038 for ; Wed, 4 Oct 2017 02:51:03 -0400 (EDT) Received: by mail-it0-f70.google.com with SMTP id y138so7468181itc.13 for ; Tue, 03 Oct 2017 23:51:03 -0700 (PDT) Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com. [148.163.156.1]) by mx.google.com with ESMTPS id 32si5803254qtu.211.2017.10.03.23.51.02 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 03 Oct 2017 23:51:03 -0700 (PDT) Received: from pps.filterd (m0098399.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id v946ncmB119868 for ; Wed, 4 Oct 2017 02:51:02 -0400 Received: from e06smtp10.uk.ibm.com (e06smtp10.uk.ibm.com [195.75.94.106]) by mx0a-001b2d01.pphosted.com with ESMTP id 2dctpw03pd-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Wed, 04 Oct 2017 02:51:01 -0400 Received: from localhost by e06smtp10.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 4 Oct 2017 07:50:59 +0100 Subject: Re: [PATCH v3 00/20] Speculative page faults References: From: Laurent Dufour Date: Wed, 4 Oct 2017 08:50:49 +0200 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Message-Id: <670c9a22-cf5b-3fab-b2f2-a72fbd4451c8@linux.vnet.ibm.com> Sender: owner-linux-mm@kvack.org List-ID: To: Alexei Starovoitov Cc: Paul McKenney , Peter Zijlstra , Andrew Morton , kirill@shutemov.name, Andi Kleen , Michal Hocko , dave@stgolabs.net, Jan Kara , Matthew Wilcox , Benjamin Herrenschmidt , Michael Ellerman , Paul Mackerras , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , Will Deacon , Sergey Senozhatsky , "linux-kernel@vger.kernel.org" , linux-mm , haren@linux.vnet.ibm.com, Anshuman Khandual , npiggin@gmail.com, bsingharora@gmail.com, Tim Chen , linuxppc-dev@lists.ozlabs.org, "x86@kernel.org" On 25/09/2017 18:27, Alexei Starovoitov wrote: > On Mon, Sep 18, 2017 at 12:15 AM, Laurent Dufour > wrote: >> Despite the unprovable lockdep warning raised by Sergey, I didn't get any >> feedback on this series. >> >> Is there a chance to get it moved upstream ? > > what is the status ? > We're eagerly looking forward for this set to land, > since we have several use cases for tracing that > will build on top of this set as discussed at Plumbers. Hi Alexei, Based on Plumber's note [1], it sounds that the use case is tied to the BPF tracing where a call tp find_vma() call will be made on a process's context to fetch user space's symbols. Am I right ? Is the find_vma() call made in the context of the process owning the mm struct ? Thanks, Laurent. [1] https://etherpad.openstack.org/p/LPC2017_Tracing) -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org