From patchwork Thu Jun 23 09:34:29 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pavel Begunkov X-Patchwork-Id: 12891989 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 19374C43334 for ; Thu, 23 Jun 2022 09:35:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230113AbiFWJfI (ORCPT ); Thu, 23 Jun 2022 05:35:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38710 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229490AbiFWJfH (ORCPT ); Thu, 23 Jun 2022 05:35:07 -0400 Received: from mail-wr1-x435.google.com (mail-wr1-x435.google.com [IPv6:2a00:1450:4864:20::435]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 54B8649257 for ; Thu, 23 Jun 2022 02:35:06 -0700 (PDT) Received: by mail-wr1-x435.google.com with SMTP id n1so26823414wrg.12 for ; Thu, 23 Jun 2022 02:35:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=0Nk4JmctkP/uGyVG90r+4nFY81ew+kSHsMPO3rfOe6A=; b=q5Vi189c8UtdTr2pMzI7/W2zxBUvuJHys0Ay/+GPTEZQKy+btrXDRHD5f0lDpuIiuv TusCUAtV/mKOkrTz1qp19r+yGjsOE+Q3qFdkip1Tuz+tpR282J3EQ40jLzZIfqCWeOy2 Mt5TLRQEnDkIE2O6nJ816D16xyVy51tS9DmDxK//ty1BfB1X+FsqGb5pXOj+Roy3diSo cyp74snBBpVhWqLeFAzvrgpeX9er1q/5DfpD49uzcpXEPAPv+XaGmUu+WOPz+eOpr+5J VHPQrJUP6tBldUdg1AlCHBegaZ7unSGRdOFLcrFVSW2mmVP2xoAxcFrpch1okrulK0x0 sjLw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=0Nk4JmctkP/uGyVG90r+4nFY81ew+kSHsMPO3rfOe6A=; b=CVyFIataZRYM6GOd7/2eFnCGK9mr0tElC6i4yzNhBBEacsb33lhBt9nJRNA74qduF4 5YEaDpAr7AwGUy9wYiJf9SfnXTjya7XnbAMXJE235HRdDT+YtV4/f0Vl3b8sisCDFbiG p8eVh7CqwgqdNE+oSd/JMlxVN2Xf5lZpKTO0V6EyLr8yp3atbqV2/V6AFIXrvbrDvNjq J4Vd0y1VzoFmNc58WBbNc+z/USsFw5rM9TiSaHV3nn+VJA0wW+aa2uGiVFBfxWGoM3qb f9eCp6n4eRfC6tyezrJfXFHA6OKzFr0q2nnTr6QWyyogpmxiCpzgqSsejet5iAId5RkX 4Ayw== X-Gm-Message-State: AJIora97st2ZrMYt+3pKjKB6wbRaNNX/ZYMarKVuWD3s+s/S3r5xosyZ PhE8cbQ6DJwDLxsi23pp9w9NNiiP+mAsY8ts X-Google-Smtp-Source: AGRyM1tRAwrrIisqHzeXqPATYfGGx6kv8J2aNtzYcuoRRvMqPrsBgkXkCh5kgmUKFBcf0wI6XBbuLw== X-Received: by 2002:a5d:598e:0:b0:218:531a:eb5 with SMTP id n14-20020a5d598e000000b00218531a0eb5mr7201400wri.334.1655976904584; Thu, 23 Jun 2022 02:35:04 -0700 (PDT) Received: from 127.0.0.1localhost (188.28.125.106.threembb.co.uk. [188.28.125.106]) by smtp.gmail.com with ESMTPSA id r21-20020a05600c35d500b003a02f957245sm2431202wmq.26.2022.06.23.02.35.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 23 Jun 2022 02:35:04 -0700 (PDT) From: Pavel Begunkov To: io-uring@vger.kernel.org Cc: Jens Axboe , asml.silence@gmail.com Subject: [PATCH for-next 0/6] poll cleanups and optimisations Date: Thu, 23 Jun 2022 10:34:29 +0100 Message-Id: X-Mailer: git-send-email 2.36.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org 1-5 are clean ups, can be considered separately. 6 optimises the final atomic_dec() in __io_arm_poll_handler(). Jens measured almost the same patch imrpoving some of the tests (netbench?) by ~1-1.5%. Pavel Begunkov (6): io_uring: clean poll ->private flagging io_uring: remove events caching atavisms io_uring: add a helper for apoll alloc io_uring: change arm poll return values io_uring: refactor poll arm error handling io_uring: optimise submission side poll_refs io_uring/poll.c | 213 ++++++++++++++++++++++++++++++++---------------- 1 file changed, 142 insertions(+), 71 deletions(-)