From patchwork Wed Sep 11 20:29:38 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jens Axboe X-Patchwork-Id: 13801062 Received: from mail-io1-f48.google.com (mail-io1-f48.google.com [209.85.166.48]) (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 119967DA9C for ; Wed, 11 Sep 2024 20:30:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.48 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726086628; cv=none; b=HGADKVIHvPNa7yovLC0ymWybmEbXV40WNbX4/CclogymkZg2drfqrRi0W5LcFGrE1dmTET2tI+zFiKAxhAwjHwAA7c5AtQSIlbw7Ya7/TZMl6EkP6v2hvJTy7A9g2cpEioEY30v++MkkzTQgf+U/84aJOydUvqYEFc0dBYrNIWo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726086628; c=relaxed/simple; bh=CtxWthPDMzYcn4DwBoVFxBgPnBhGQOvvL7gMXzgJmXk=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=oun1SA1WCP4VDPMUX6EE7x7daKxGyXlSOl9tx2al4rnO0z9C2WOqMDpbspx2k6dplZQ3EW3/NT+J0gBiw4D7+0NV0aK11V17hfVdXvwa/CxhuMD251w6saWwgHayfVKCWsanL6sJGYNNbBZR2dgal5kapzXfVFYeWR1ATzchKyY= 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=f8Z0+qtn; arc=none smtp.client-ip=209.85.166.48 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="f8Z0+qtn" Received: by mail-io1-f48.google.com with SMTP id ca18e2360f4ac-82aa7c3b3dbso10524239f.2 for ; Wed, 11 Sep 2024 13:30:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20230601.gappssmtp.com; s=20230601; t=1726086624; x=1726691424; 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=OkHhFOaTFyrM0yROpilfQezopjU/Aw8IlatgjrNRwCs=; b=f8Z0+qtndc2luBO2hSDweoNWZFm18MhELRysQATEOXgnmvJPeZB60lb4Puq3VtAbYv 3MN8SuUFekCgJO9rzPkx0XNzQEGkO1Z194aZqbZfOXq4M+4m1tySw/C5cXLlNONBxFPZ pklASEeESwB4yj5V2AqWawSQNzBqTBvjOAqMGLwosPYkhe/zg9zdnEYm9AvMA74yhkN2 QaNvMD6Ldqfr1GFiUysDBvp9uu09NpYs6MUJJivThjtgownF+cN7gdWysGKIkfpMFPxU AbjC0kNwl2bFzQwm3qHmtFobUGaamXgP0uF+B6d7McKrh4ws0pLzpZT8AVkk/YXO8CV+ k0lA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1726086624; x=1726691424; 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=OkHhFOaTFyrM0yROpilfQezopjU/Aw8IlatgjrNRwCs=; b=MN78hcUc/EOc9JekZvo+QuDSui9JLkP8kcGHpkTCSOG8/XerzJEgrXNlZujk4EPIfO GJmkAGyvUR0484/YOx82qPak3oCQMRoG9PaFZyUZsGC+RBut53HC+dn3G065WRU0epsk zbtELaCHiJXv7se+qhe7cxxX46pnFYdzej6rb9WFnB0zlG8aPv54IT+U9UHEvlI/HzLH gsLSB8mdgB3KPDZ3Xloa3RDW6+1w+rHp6aQ/xzL2VkaZhrycmBC/HCtFOQIcGrWjyA9o Zuj51yUVbLmzViw48EJWLxeir7ZXwAQ7X9Veqj1Cqy0TvlgiWMwRaontfMq2cSEemhA6 jZLQ== X-Gm-Message-State: AOJu0YzewqWZR/i0DOghVaDenPvs5xfsqxFCg5qo43EAnmL+nHVLHKTx s2V8FfAXkvHfKyHHIc72JZM37pq05GeaP6XY02bLWGI2meIOyFJtFh9wc/HCyOp46W5ElpWhVUo x9eQ= X-Google-Smtp-Source: AGHT+IE6KYDF2OfrvKbRORt7yEl+r6uf+wxg/IbQyOjgBt8ue0Tm43gqHruJyF1KKpwBhiIj6PD5Dg== X-Received: by 2002:a05:6602:601b:b0:82c:edd4:f0a6 with SMTP id ca18e2360f4ac-82d1f984d79mr110346239f.12.1726086624219; Wed, 11 Sep 2024 13:30:24 -0700 (PDT) Received: from localhost.localdomain ([96.43.243.2]) by smtp.gmail.com with ESMTPSA id 8926c6da1cb9f-4d35f433d60sm185173173.26.2024.09.11.13.30.23 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Sep 2024 13:30:23 -0700 (PDT) From: Jens Axboe To: io-uring@vger.kernel.org Subject: [PATCHSET v2 0/3] Provide more efficient buffer registration Date: Wed, 11 Sep 2024 14:29:38 -0600 Message-ID: <20240911203021.416244-1-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. Since v1: - Actually send out the right version... include/uapi/linux/io_uring.h | 8 +++ io_uring/register.c | 6 +++ io_uring/rsrc.c | 95 ++++++++++++++++++++++++++++++++++- io_uring/rsrc.h | 2 + 4 files changed, 110 insertions(+), 1 deletion(-)