From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 99CEC27FD61; Tue, 27 May 2025 17:00:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748365202; cv=none; b=irB3h+fcmtqwePzkTIK2Vq7iqLXtkO96kbWOsGmCV+MC48UZdvEbhdH+DyGIMUx3fGYaNyp4PTTbPP7QMpWlWsqMXhHkK5EqLw1FIt7tdWIzbBT9BjMpEjIfxIOiiqj5bWw/RW3qUcj4S66c7wyfOnKVFFHTnmfQBQ6JqMpxUUk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748365202; c=relaxed/simple; bh=YZ2oMVULHYa93hhilrUAyynPEjoYTyfzy2z4lPIc7Tg=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=jn9Vl5qHNn1+1TqkPsiTIvoKKA917To7pQfvb3lWuVOCL0NqUGGxDjcijxlK2aPrvSbNndoaHnqSEj4PjxhnEOrgDaYZocwRL2NwABuuyEgmt8Yqb+rLo/647iH1XFERRbSf1KyznRx+7m2eykG0rWJg5RBnyUSX4gF5ZEwbp5w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=iSArvkHK; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="iSArvkHK" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0F63BC4CEEB; Tue, 27 May 2025 17:00:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1748365202; bh=YZ2oMVULHYa93hhilrUAyynPEjoYTyfzy2z4lPIc7Tg=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=iSArvkHKnbdfsIqUw+stBXLTL/Ke5U83Hr/h23PCKH2twhwaBkubimAvx+taEjhT+ 17GlrF1mNeJ2qOU1eeQFgusqyTP1WRXOw7wtddnqrTKjnZLZXhJ4GxmKoP6fqH3adF 0z2L9LzHN+9Vy5fTKrqM/7c9uzziOcOKJ0MDEdzdO1qPK+X3ASzCKvacfPGOisD9+F WKAGBUN79iYYo5BVjEit65FIDLp3Sp67mhiw4T5Bvx6D2IFu+Tqb3fSiLcz5O4kK1n /YBV1WAXRqBb0V/YcRRV6HLwvAO05G2KHwpnU0EdoV5jkVxUdL9tc1RSwrXhIv1HM4 U6NdPKaAX22tg== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 7228D380AAE2; Tue, 27 May 2025 17:00:37 +0000 (UTC) Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH bpf-next v7 0/5] Replace CONFIG_DMABUF_SYSFS_STATS with BPF From: patchwork-bot+netdevbpf@kernel.org Message-Id: <174836523626.1711047.17059127767778339738.git-patchwork-notify@kernel.org> Date: Tue, 27 May 2025 17:00:36 +0000 References: <20250522230429.941193-1-tjmercier@google.com> In-Reply-To: <20250522230429.941193-1-tjmercier@google.com> To: T.J. Mercier Cc: sumit.semwal@linaro.org, christian.koenig@amd.com, ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, martin.lau@linux.dev, skhan@linuxfoundation.org, alexei.starovoitov@gmail.com, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, bpf@vger.kernel.org, linux-kselftest@vger.kernel.org, android-mm@google.com, simona@ffwll.ch, eddyz87@gmail.com, yonghong.song@linux.dev, john.fastabend@gmail.com, kpsingh@kernel.org, sdf@fomichev.me, jolsa@kernel.org, mykolal@fb.com, shuah@kernel.org, song@kernel.org Hello: This series was applied to bpf/bpf-next.git (master) by Alexei Starovoitov : On Thu, 22 May 2025 23:04:24 +0000 you wrote: > Until CONFIG_DMABUF_SYSFS_STATS was added [1] it was only possible to > perform per-buffer accounting with debugfs which is not suitable for > production environments. Eventually we discovered the overhead with > per-buffer sysfs file creation/removal was significantly impacting > allocation and free times, and exacerbated kernfs lock contention. [2] > dma_buf_stats_setup() is responsible for 39% of single-page buffer > creation duration, or 74% of single-page dma_buf_export() duration when > stressing dmabuf allocations and frees. > > [...] Here is the summary with links: - [bpf-next,v7,1/5] dma-buf: Rename debugfs symbols https://git.kernel.org/bpf/bpf-next/c/89f9dba365e1 - [bpf-next,v7,2/5] bpf: Add dmabuf iterator https://git.kernel.org/bpf/bpf-next/c/76ea95534995 - [bpf-next,v7,3/5] bpf: Add open coded dmabuf iterator https://git.kernel.org/bpf/bpf-next/c/6eab7ac7c5ee - [bpf-next,v7,4/5] selftests/bpf: Add test for dmabuf_iter https://git.kernel.org/bpf/bpf-next/c/ae5d2c59ecd7 - [bpf-next,v7,5/5] selftests/bpf: Add test for open coded dmabuf_iter https://git.kernel.org/bpf/bpf-next/c/7594dcb71ff8 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html