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Fri, 16 Jul 2021 06:04:12 +0000 Received: from [10.2.84.248] (172.20.187.6) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 16 Jul 2021 06:04:11 +0000 Subject: Re: [PATCH 4/4] Revert "mm/page_alloc: make should_fail_alloc_page() static" From: John Hubbard To: Jesper Dangaard Brouer , Mel Gorman , Andrew Morton , , Jiri Olsa CC: , Desmond Cheong Zhi Xi , Zhang Qiang , Yanfei Xu , Chuck Lever , Matteo Croce , Linux-MM , LKML , bpf References: <20210713152100.10381-1-mgorman@techsingularity.net> <20210713152100.10381-5-mgorman@techsingularity.net> <5db9011e-9b52-b415-70b6-c7ee1b01436b@redhat.com> <90251cd2-7c4c-9d2f-668f-c2168da7ac9c@nvidia.com> Message-ID: <75085fb8-83ae-0f18-af51-df43b5f1a77c@nvidia.com> Date: Thu, 15 Jul 2021 23:04:11 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: <90251cd2-7c4c-9d2f-668f-c2168da7ac9c@nvidia.com> Content-Type: text/plain; charset="utf-8"; 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X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Jul 2021 06:04:12.6207 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 8c828cfd-1f86-43dd-087f-08d9481f88eb X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.112.34];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT038.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB5342 Authentication-Results: imf14.hostedemail.com; dkim=pass header.d=Nvidia.com header.s=selector2 header.b=P9i0q7YG; spf=none (imf14.hostedemail.com: domain of jhubbard@nvidia.com has no SPF policy when checking 40.107.243.42) smtp.mailfrom=jhubbard@nvidia.com; dmarc=pass (policy=quarantine) header.from=nvidia.com X-Stat-Signature: j3f31mtuyhcfc4jatmq9xcnf6dwfgr4w X-Rspamd-Queue-Id: 16F7F6001981 X-Rspamd-Server: rspam01 X-HE-Tag: 1626415453-680692 Content-Transfer-Encoding: quoted-printable 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: On 7/15/21 5:04 PM, John Hubbard wrote: ... >>> ...and un-setting CONFIG_DEBUG_INFO_BTF makes that disappear. Maybe s= omeone >>> who is understands the BTFIDS build step can shed some light on that;= I'm >>> not there yet. :) >> >> I'm just a user/consume of output from the BTFIDS build step, I think = Jiri Olsa own the tool=20 >> resolve_btfids, and ACME pahole.=C2=A0 I've hit a number of issues in = the past that Jiri and ACME help=20 >> resolve quickly. >> The most efficient solution I've found was to upgrade pahole to a newe= r version. >> >> What version of pahole does your build system have? >> >> What is your GCC version? >> >=20 > Just a quick answer first on the versions: this is an up to date Arch L= inux system: >=20 > gcc: 11.1.0 > pahole: 1.21 >=20 > I'll try to get the other step done later this evening. ...and...I've lost the repro completely. The only thing I changed was tha= t I attempted to update pahole. This caused Arch Linux reinstall pahole, clai= ming that 1.21 is already the current version. It acts as if there was something wrong with the pahole installation. Thi= s seems unlikely, given that the system is merely on a routine update sched= ule. However, that's the data I have. If it ever comes up again I'll be able to run resolve_btfids, using your steps here, so thanks for posting those! thanks, --=20 John Hubbard NVIDIA