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Intel Mac OS X 10.15; rv:102.0) Gecko/20100101 Thunderbird/102.2.1 Subject: Re: [PATCH v3 1/1] Create debugfs file with hyper-v balloon usage information To: "Michael Kelley (LINUX)" , Wei Liu Cc: KY Srinivasan , Haiyang Zhang , Stephen Hemminger , Dexuan Cui , "kernel@openvz.org" , "linux-hyperv@vger.kernel.org" , "linux-kernel@vger.kernel.org" References: <20220711181825.52318-1-alexander.atanasov@virtuozzo.com> <20220713151927.e6w5gcb67ffh4zlx@liuwe-devbox-debian-v2> From: Alexander Atanasov In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: VI1PR09CA0084.eurprd09.prod.outlook.com (2603:10a6:802:29::28) To VE1PR08MB4765.eurprd08.prod.outlook.com (2603:10a6:802:a5::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: VE1PR08MB4765:EE_|AM8PR08MB5763:EE_ X-MS-Office365-Filtering-Correlation-Id: a9985f6f-4d3f-4dab-3f09-08da90a920cf X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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I think your > original plan had been for each of the balloon driver to report > useful information in debugfs. But as a result of the discussion, > it looks like virtio-balloon will be putting the information in > /proc/meminfo. If that's the case, it seems like we should > drop these changes to the Hyper-V balloon driver, and have > the Hyper-V balloon driver take the same approach as > virtio-balloon. > > These Hyper-V balloon driver changes have already gone > into 6.0-rc1. If we're going to drop them, we should do > the revert before 6.0 is done. > > Thoughts? There is a lot of information that would not go into /proc/meminfo. vmware have only one file with all, virtio have separate file for features to expose. HV doesn't have other files so i think file is still useful. Only the memory in kB will go into the /proc/meminfo - pages/page sizes would not. But i am not sure how to handle the situation since i guess it will take time for the MM guys to decide - there is currently only one Ack on the series. -- Regards, Alexander Atanasov