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=-5.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_MUTT autolearn=unavailable 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 D4690C31E51 for ; Tue, 18 Jun 2019 06:52:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B797320665 for ; Tue, 18 Jun 2019 06:52:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728841AbfFRGv7 (ORCPT ); Tue, 18 Jun 2019 02:51:59 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:44064 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726248AbfFRGv6 (ORCPT ); Tue, 18 Jun 2019 02:51:58 -0400 Received: from pps.filterd (m0098404.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x5I67JCL109869 for ; Tue, 18 Jun 2019 02:13:11 -0400 Received: from e06smtp02.uk.ibm.com (e06smtp02.uk.ibm.com [195.75.94.98]) by mx0a-001b2d01.pphosted.com with ESMTP id 2t6r0jcq58-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Tue, 18 Jun 2019 02:13:10 -0400 Received: from localhost by e06smtp02.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Tue, 18 Jun 2019 07:13:03 +0100 Received: from d06av23.portsmouth.uk.ibm.com (d06av23.portsmouth.uk.ibm.com [9.149.105.59]) by b06cxnps3075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x5I6D2jD61210840 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 18 Jun 2019 06:13:02 GMT Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 79475A4040; Tue, 18 Jun 2019 06:13:02 +0000 (GMT) Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7A0E8A4051; Tue, 18 Jun 2019 06:13:01 +0000 (GMT) Received: from rapoport-lnx (unknown [9.148.8.53]) by d06av23.portsmouth.uk.ibm.com (Postfix) with ESMTPS; Tue, 18 Jun 2019 06:13:01 +0000 (GMT) Date: Tue, 18 Jun 2019 09:12:59 +0300 From: Mike Rapoport To: Will Deacon Cc: Mark Rutland , Qian Cai , akpm@linux-foundation.org, Roman Gushchin , catalin.marinas@arm.com, linux-kernel@vger.kernel.org, mhocko@kernel.org, linux-mm@kvack.org, vdavydov.dev@gmail.com, hannes@cmpxchg.org, cgroups@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH -next] arm64/mm: fix a bogus GFP flag in pgd_alloc() References: <1559656836-24940-1-git-send-email-cai@lca.pw> <20190604142338.GC24467@lakrids.cambridge.arm.com> <20190610114326.GF15979@fuggles.cambridge.arm.com> <1560187575.6132.70.camel@lca.pw> <20190611100348.GB26409@lakrids.cambridge.arm.com> <20190613121100.GB25164@rapoport-lnx> <20190617151252.GF16810@rapoport-lnx> <20190617163630.GH30800@fuggles.cambridge.arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190617163630.GH30800@fuggles.cambridge.arm.com> User-Agent: Mutt/1.5.24 (2015-08-30) X-TM-AS-GCONF: 00 x-cbid: 19061806-0008-0000-0000-000002F4A996 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19061806-0009-0000-0000-00002261BF41 Message-Id: <20190618061259.GB15497@rapoport-lnx> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-06-18_03:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=27 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=937 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1906180050 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jun 17, 2019 at 05:36:30PM +0100, Will Deacon wrote: > Hi Mike, > > On Mon, Jun 17, 2019 at 06:12:52PM +0300, Mike Rapoport wrote: > > Andrew, can you please add the patch below as an incremental fix? > > > > With this the arm64::pgd_alloc() should be in the right shape. > > > > > > From 1c1ef0bc04c655689c6c527bd03b140251399d87 Mon Sep 17 00:00:00 2001 > > From: Mike Rapoport > > Date: Mon, 17 Jun 2019 17:37:43 +0300 > > Subject: [PATCH] arm64/mm: don't initialize pgd_cache twice > > > > When PGD_SIZE != PAGE_SIZE, arm64 uses kmem_cache for allocation of PGD > > memory. That cache was initialized twice: first through > > pgtable_cache_init() alias and then as an override for weak > > pgd_cache_init(). > > > > After enabling accounting for the PGD memory, this created a confusion for > > memcg and slub sysfs code which resulted in the following errors: > > > > [ 90.608597] kobject_add_internal failed for pgd_cache(13:init.scope) (error: -2 parent: cgroup) > > [ 90.678007] kobject_add_internal failed for pgd_cache(13:init.scope) (error: -2 parent: cgroup) > > [ 90.713260] kobject_add_internal failed for pgd_cache(21:systemd-tmpfiles-setup.service) (error: -2 parent: cgroup) > > > > Removing the alias from pgtable_cache_init() and keeping the only pgd_cache > > initialization in pgd_cache_init() resolves the problem and allows > > accounting of PGD memory. > > > > Reported-by: Qian Cai > > Signed-off-by: Mike Rapoport > > --- > > arch/arm64/include/asm/pgtable.h | 3 +-- > > arch/arm64/mm/pgd.c | 5 +---- > > 2 files changed, 2 insertions(+), 6 deletions(-) > > Looks like this actually fixes caa841360134 ("x86/mm: Initialize PGD cache > during mm initialization") due to an unlucky naming conflict! > > In which case, I'd actually prefer to take this fix asap via the arm64 > tree. Is that ok? I suppose so, it just won't apply as is. Would you like a patch against the current upstream? > Will -- Sincerely yours, Mike. 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=-5.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_MUTT autolearn=ham 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 D5BFBC31E5E for ; Tue, 18 Jun 2019 06:13:17 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id AE272214AF for ; Tue, 18 Jun 2019 06:13:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="rYiyr6RU" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AE272214AF Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.ibm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Message-Id:In-Reply-To:MIME-Version: References:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=kF+nEANiRuQxERUeFu7JrZqeShqC3Stuc6CtPWERSC4=; b=rYiyr6RUjGitAb sqJ8ZP8d2ICzhHBbhEIXLiz+xctoZ0uqyU7Q9vV+TtoxiQ90k0C4AvEV6Y/tcgm5fo6SHvj1GO6IU LTCSwAGUorw7Z7PZ2p/syaPx/k0bwghK1o4RxT7Ov0L3Ia4oWdLLCsPDK5VW6b9fXABK7u1qtFCle UdKokuwKLV5wBp6Pbv0isi38MfPhbIsxTck8v5wNJsNS4VGpRZ7E0pK4Y2i69ZkOlTkqjQwdZC0fD 1lTHNpCzEngMFqhVyvpWBOZcxwQcPgVH9A0c6IZnMqlwdghjKRMt8CwbUli37HS743gak8jUIJ+Bt Lb6zbV09IsDV2lyVZblg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hd7Mq-0007wh-NO; Tue, 18 Jun 2019 06:13:16 +0000 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5] helo=mx0a-001b2d01.pphosted.com) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hd7Mo-0007wK-98 for linux-arm-kernel@lists.infradead.org; Tue, 18 Jun 2019 06:13:15 +0000 Received: from pps.filterd (m0098420.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x5I67n0P165648 for ; Tue, 18 Jun 2019 02:13:10 -0400 Received: from e06smtp02.uk.ibm.com (e06smtp02.uk.ibm.com [195.75.94.98]) by mx0b-001b2d01.pphosted.com with ESMTP id 2t6nt18ehj-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Tue, 18 Jun 2019 02:13:10 -0400 Received: from localhost by e06smtp02.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Tue, 18 Jun 2019 07:13:03 +0100 Received: from d06av23.portsmouth.uk.ibm.com (d06av23.portsmouth.uk.ibm.com [9.149.105.59]) by b06cxnps3075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x5I6D2jD61210840 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 18 Jun 2019 06:13:02 GMT Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 79475A4040; Tue, 18 Jun 2019 06:13:02 +0000 (GMT) Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7A0E8A4051; Tue, 18 Jun 2019 06:13:01 +0000 (GMT) Received: from rapoport-lnx (unknown [9.148.8.53]) by d06av23.portsmouth.uk.ibm.com (Postfix) with ESMTPS; Tue, 18 Jun 2019 06:13:01 +0000 (GMT) Date: Tue, 18 Jun 2019 09:12:59 +0300 From: Mike Rapoport To: Will Deacon Subject: Re: [PATCH -next] arm64/mm: fix a bogus GFP flag in pgd_alloc() References: <1559656836-24940-1-git-send-email-cai@lca.pw> <20190604142338.GC24467@lakrids.cambridge.arm.com> <20190610114326.GF15979@fuggles.cambridge.arm.com> <1560187575.6132.70.camel@lca.pw> <20190611100348.GB26409@lakrids.cambridge.arm.com> <20190613121100.GB25164@rapoport-lnx> <20190617151252.GF16810@rapoport-lnx> <20190617163630.GH30800@fuggles.cambridge.arm.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190617163630.GH30800@fuggles.cambridge.arm.com> User-Agent: Mutt/1.5.24 (2015-08-30) X-TM-AS-GCONF: 00 x-cbid: 19061806-0008-0000-0000-000002F4A996 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19061806-0009-0000-0000-00002261BF41 Message-Id: <20190618061259.GB15497@rapoport-lnx> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-06-18_03:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=27 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=929 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1906180050 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190617_231314_444986_A57BE30E X-CRM114-Status: GOOD ( 28.49 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , catalin.marinas@arm.com, linux-kernel@vger.kernel.org, mhocko@kernel.org, linux-mm@kvack.org, Qian Cai , vdavydov.dev@gmail.com, hannes@cmpxchg.org, cgroups@vger.kernel.org, akpm@linux-foundation.org, Roman Gushchin , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Jun 17, 2019 at 05:36:30PM +0100, Will Deacon wrote: > Hi Mike, > > On Mon, Jun 17, 2019 at 06:12:52PM +0300, Mike Rapoport wrote: > > Andrew, can you please add the patch below as an incremental fix? > > > > With this the arm64::pgd_alloc() should be in the right shape. > > > > > > From 1c1ef0bc04c655689c6c527bd03b140251399d87 Mon Sep 17 00:00:00 2001 > > From: Mike Rapoport > > Date: Mon, 17 Jun 2019 17:37:43 +0300 > > Subject: [PATCH] arm64/mm: don't initialize pgd_cache twice > > > > When PGD_SIZE != PAGE_SIZE, arm64 uses kmem_cache for allocation of PGD > > memory. That cache was initialized twice: first through > > pgtable_cache_init() alias and then as an override for weak > > pgd_cache_init(). > > > > After enabling accounting for the PGD memory, this created a confusion for > > memcg and slub sysfs code which resulted in the following errors: > > > > [ 90.608597] kobject_add_internal failed for pgd_cache(13:init.scope) (error: -2 parent: cgroup) > > [ 90.678007] kobject_add_internal failed for pgd_cache(13:init.scope) (error: -2 parent: cgroup) > > [ 90.713260] kobject_add_internal failed for pgd_cache(21:systemd-tmpfiles-setup.service) (error: -2 parent: cgroup) > > > > Removing the alias from pgtable_cache_init() and keeping the only pgd_cache > > initialization in pgd_cache_init() resolves the problem and allows > > accounting of PGD memory. > > > > Reported-by: Qian Cai > > Signed-off-by: Mike Rapoport > > --- > > arch/arm64/include/asm/pgtable.h | 3 +-- > > arch/arm64/mm/pgd.c | 5 +---- > > 2 files changed, 2 insertions(+), 6 deletions(-) > > Looks like this actually fixes caa841360134 ("x86/mm: Initialize PGD cache > during mm initialization") due to an unlucky naming conflict! > > In which case, I'd actually prefer to take this fix asap via the arm64 > tree. Is that ok? I suppose so, it just won't apply as is. Would you like a patch against the current upstream? > Will -- Sincerely yours, Mike. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Rapoport Subject: Re: [PATCH -next] arm64/mm: fix a bogus GFP flag in pgd_alloc() Date: Tue, 18 Jun 2019 09:12:59 +0300 Message-ID: <20190618061259.GB15497@rapoport-lnx> References: <1559656836-24940-1-git-send-email-cai@lca.pw> <20190604142338.GC24467@lakrids.cambridge.arm.com> <20190610114326.GF15979@fuggles.cambridge.arm.com> <1560187575.6132.70.camel@lca.pw> <20190611100348.GB26409@lakrids.cambridge.arm.com> <20190613121100.GB25164@rapoport-lnx> <20190617151252.GF16810@rapoport-lnx> <20190617163630.GH30800@fuggles.cambridge.arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Message-Id:In-Reply-To:MIME-Version: References:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=kF+nEANiRuQxERUeFu7JrZqeShqC3Stuc6CtPWERSC4=; b=rYiyr6RUjGitAb sqJ8ZP8d2ICzhHBbhEIXLiz+xctoZ0uqyU7Q9vV+TtoxiQ90k0C4AvEV6Y/tcgm5fo6SHvj1GO6IU LTCSwAGUorw7Z7PZ2p/syaPx/k0bwghK1o4RxT7Ov0L3Ia4oWdLLCsPDK5VW6b9fXABK7u1qtFCle UdKokuwKLV5wBp6Pbv0isi38MfPhbIsxTck8v5wNJsNS4VGpRZ7E0pK4Y2i69ZkOlTkqjQwdZC0fD 1lTHNpCzEngMFqhVyvpWBOZcxwQcPgVH9A0c6IZnMqlwdghjKRMt8CwbUli37HS743gak8jUIJ+Bt Lb6zbV09IsDV2lyVZblg==; Content-Disposition: inline In-Reply-To: <20190617163630.GH30800@fuggles.cambridge.arm.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Will Deacon Cc: Mark Rutland , catalin.marinas@arm.com, linux-kernel@vger.kernel.org, mhocko@kernel.org, linux-mm@kvack.org, Qian Cai , vdavydov.dev@gmail.com, hannes@cmpxchg.org, cgroups@vger.kernel.org, akpm@linux-foundation.org, Roman Gushchin , linux-arm-kernel@lists.infradead.org On Mon, Jun 17, 2019 at 05:36:30PM +0100, Will Deacon wrote: > Hi Mike, > > On Mon, Jun 17, 2019 at 06:12:52PM +0300, Mike Rapoport wrote: > > Andrew, can you please add the patch below as an incremental fix? > > > > With this the arm64::pgd_alloc() should be in the right shape. > > > > > > From 1c1ef0bc04c655689c6c527bd03b140251399d87 Mon Sep 17 00:00:00 2001 > > From: Mike Rapoport > > Date: Mon, 17 Jun 2019 17:37:43 +0300 > > Subject: [PATCH] arm64/mm: don't initialize pgd_cache twice > > > > When PGD_SIZE != PAGE_SIZE, arm64 uses kmem_cache for allocation of PGD > > memory. That cache was initialized twice: first through > > pgtable_cache_init() alias and then as an override for weak > > pgd_cache_init(). > > > > After enabling accounting for the PGD memory, this created a confusion for > > memcg and slub sysfs code which resulted in the following errors: > > > > [ 90.608597] kobject_add_internal failed for pgd_cache(13:init.scope) (error: -2 parent: cgroup) > > [ 90.678007] kobject_add_internal failed for pgd_cache(13:init.scope) (error: -2 parent: cgroup) > > [ 90.713260] kobject_add_internal failed for pgd_cache(21:systemd-tmpfiles-setup.service) (error: -2 parent: cgroup) > > > > Removing the alias from pgtable_cache_init() and keeping the only pgd_cache > > initialization in pgd_cache_init() resolves the problem and allows > > accounting of PGD memory. > > > > Reported-by: Qian Cai > > Signed-off-by: Mike Rapoport > > --- > > arch/arm64/include/asm/pgtable.h | 3 +-- > > arch/arm64/mm/pgd.c | 5 +---- > > 2 files changed, 2 insertions(+), 6 deletions(-) > > Looks like this actually fixes caa841360134 ("x86/mm: Initialize PGD cache > during mm initialization") due to an unlucky naming conflict! > > In which case, I'd actually prefer to take this fix asap via the arm64 > tree. Is that ok? I suppose so, it just won't apply as is. Would you like a patch against the current upstream? > Will -- Sincerely yours, Mike.