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=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 B14AAC43460 for ; Tue, 20 Apr 2021 08:30:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7D85461104 for ; Tue, 20 Apr 2021 08:30:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230350AbhDTIaj (ORCPT ); Tue, 20 Apr 2021 04:30:39 -0400 Received: from mx2.suse.de ([195.135.220.15]:57554 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229551AbhDTIaj (ORCPT ); Tue, 20 Apr 2021 04:30:39 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1618907407; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=Gc2OYO7Gop4pXOyn2eMOrNhPvb4JX9AiP/LihACJjrQ=; b=BCNcFuuvbhFnjxTxkMtniV6iWAWam2IqyWerccUoN/HC6fZYKEpWY2rM4gXw/GDh0DIDxX 7LkSj6Fje6422drCh/GTOBK9zvwW19pEVV9/TN8slkM9hK3/2AmLZN+j3iji2Ohk0CsFvB ZDwJHGFz/U5maxLX/pucXx1QLqZm9no= Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id D66A1AE38; Tue, 20 Apr 2021 08:30:06 +0000 (UTC) Date: Tue, 20 Apr 2021 10:30:06 +0200 From: Michal Hocko To: Peter Enderborg Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, Sumit Semwal , Christian =?iso-8859-1?Q?K=F6nig?= , Alexey Dobriyan , Andrew Morton , Muchun Song , Roman Gushchin , Shakeel Butt , NeilBrown , Sami Tolvanen , Mike Rapoport , linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, Matthew Wilcox , Jonathan Corbet , Randy Dunlap , Kees Cook , Mauro Carvalho Chehab , Alexey Gladkov , Feng Tang , linux-doc@vger.kernel.org Subject: Re: [PATCH 0/2 V6]Add dma-buf counter Message-ID: References: <20210420082220.7402-1-peter.enderborg@sony.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210420082220.7402-1-peter.enderborg@sony.com> Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org On Tue 20-04-21 10:22:18, Peter Enderborg wrote: > The dma-buf counter is a metric for mapped memory used by it's clients. > It is a shared buffer that is typically used for interprocess communication > or process to hardware communication. In android we used to have ION,. but > it is now replaced with dma-buf. ION had some overview metrics that was similar. The discussion around the previous version is still not over and as it seems your proposed approach is not really viable. So please do not send new versions until that is sorted out. Thanks! -- Michal Hocko SUSE Labs