From patchwork Wed Sep 11 20:03:51 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jens Axboe X-Patchwork-Id: 13801020 Received: from mail-io1-f53.google.com (mail-io1-f53.google.com [209.85.166.53]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2D2F21B7917 for ; Wed, 11 Sep 2024 20:07:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.53 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726085236; cv=none; b=apBFzY1dkLxnxNrAAHXvwMOelf0t/FtE2PD/yd9OwNy9/A7tmSx9E4fKVxrACuX2SMopN9FbRYNwsswXzga+fV1ToTOucejQkl/LBaguSyg7o3/OVwFCevhd1r6tp2W4qJiA/pJe3EYHA8VTumsQA0t1SHKIVUEoR/t5f6ZzKWs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726085236; c=relaxed/simple; bh=eRiw7bSewnDCoKgkFsSjxYolaNSU423dH8dhpJ5LM98=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=sYvaEOLQbKWNhRXoE1bBfNsNKAYQ2IS3Vwycvx2qlwG9R9gvW/s/mKNm+G0LzTrOJw8nJ9Lt0BeMHgkORVQLv7CxJVy1U4b0E4iSdJqo4zHodg1QSeO7mKBwHQbqRdZRPMs3l4zdu+FBKaN727YThbdDy3w0wbm2wM9nFthylJ0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.dk; spf=pass smtp.mailfrom=kernel.dk; dkim=pass (2048-bit key) header.d=kernel-dk.20230601.gappssmtp.com header.i=@kernel-dk.20230601.gappssmtp.com header.b=FkmGRPSF; arc=none smtp.client-ip=209.85.166.53 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.dk Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=kernel.dk Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel-dk.20230601.gappssmtp.com header.i=@kernel-dk.20230601.gappssmtp.com header.b="FkmGRPSF" Received: by mail-io1-f53.google.com with SMTP id ca18e2360f4ac-82ceab75c05so9773839f.0 for ; Wed, 11 Sep 2024 13:07:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20230601.gappssmtp.com; s=20230601; t=1726085231; x=1726690031; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:to :from:from:to:cc:subject:date:message-id:reply-to; bh=XCetFP/BgCOp+/QcEsMHLlGtRT8rBm7Ad7CpUiUqmBo=; b=FkmGRPSFB0oQ6IEoWVQD6STlKsVL6WB1vIZeiYPHuy5w+jB+SPcAF6sy5YUe5F+lIA Gu7pY+o9QAVLaWMPXn2wKYLexRb3Z8FZ5gen7GC4CHJyvXCoNhuHlmJGOhNLo9ugCSir NNXYDajNHBnq5q55vU9gQA3IYXwvoUew9dAzKGrqCETJyQdpzeSqOubcFdxF2IOvX+xe lRfTKZAidGR07IQ3LARIZkdU+Axxjc8VcNkvKk/7Ue2vzQ2wxUq5u7LD9ZXQQly5hD/K jrnTbRi47d5f436fwwQ8+qEv+gxwO3fQVJcbme9YQsLv5v07BbSwrckOy5Y3ztjMh6HL jQkA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1726085231; x=1726690031; h=content-transfer-encoding:mime-version:message-id:date:subject:to :from:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=XCetFP/BgCOp+/QcEsMHLlGtRT8rBm7Ad7CpUiUqmBo=; b=VLyKi9KAAY7uBrJvBhh0TvmjYmTRKOlAiX4s9mnd3wW5CfbgJRaQNsED5EZj5LHV5X dlSb3+k6TTzLYhM0hecmFOzgRX0Zw42dlSpya6oCphrgTT0TD6sgxRBMKAgmGQuJQa3s C+5taJA0pnXHM8hVfa+2cFn1qtaZiRZiWgfm8h6aAWbDwvjx9EaMF8l+iW/ZrtggUVB5 QfTGJg/XsOQOkzLRg2O/Chve3bV9klv1qniSQQ+3sFdsNtuiNuVWf20V7LOx5oDA83kB PBKVU57yRzs+zB1SgHk2WWpwUTruU0Q1LIYZ5I6ubLWlBtLb8A/exGa4/WmCVCVrz8Pw z4gg== X-Gm-Message-State: AOJu0YxDlTQYCx1/Xlh6eZlox2okI1MMuCvNxdQZXM5N3XE+NvAs9V8i XfQJHtTPP+FCi1odSMXwJlYdcurk2ErlPJQzElrVrcj0/9fv1IhD1iOKPZoEqtUvE38XOHyqMDi Xvc8= X-Google-Smtp-Source: AGHT+IEtaIELQz0muUPSLJWYumBiVWemz4+5DAmX+JbnhxUqxBQtSgTFxzQFrgqoturw8TXXMGCF+A== X-Received: by 2002:a05:6602:13d0:b0:82a:a454:6306 with SMTP id ca18e2360f4ac-82d1f8c7252mr97286539f.1.1726085230862; Wed, 11 Sep 2024 13:07:10 -0700 (PDT) Received: from localhost.localdomain ([96.43.243.2]) by smtp.gmail.com with ESMTPSA id ca18e2360f4ac-82aa733a1d6sm289860239f.1.2024.09.11.13.07.09 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Sep 2024 13:07:10 -0700 (PDT) From: Jens Axboe To: io-uring@vger.kernel.org Subject: [PATCHSET 0/3] Provide more efficient buffer registration Date: Wed, 11 Sep 2024 14:03:51 -0600 Message-ID: <20240911200705.392343-1-axboe@kernel.dk> X-Mailer: git-send-email 2.45.2 Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Hi, Pretty much what the subject line says, it's about 25k to 40k times faster to provide a way to duplicate an existing rings buffer registration than it is manually map/pin/register the buffers again with a new ring. Patch 1 is just a prep patch, patch 2 adds refs to struct io_mapped_ubuf, and patch 3 finally adds the register opcode to allow a ring to duplicate the registered mappings from one ring to another. This came about from discussing overhead from the varnish cache project for cases with more dynamic ring/thread creation. include/uapi/linux/io_uring.h | 8 ++++ io_uring/register.c | 6 +++ io_uring/rsrc.c | 89 ++++++++++++++++++++++++++++++++++- io_uring/rsrc.h | 2 + 4 files changed, 104 insertions(+), 1 deletion(-)