From patchwork Thu Jun 23 13:24:43 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pavel Begunkov X-Patchwork-Id: 12892749 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 B80B2CCA47C for ; Thu, 23 Jun 2022 13:25:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231159AbiFWNZ1 (ORCPT ); Thu, 23 Jun 2022 09:25:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36776 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231147AbiFWNZ0 (ORCPT ); Thu, 23 Jun 2022 09:25:26 -0400 Received: from mail-wm1-x333.google.com (mail-wm1-x333.google.com [IPv6:2a00:1450:4864:20::333]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6583449C94 for ; Thu, 23 Jun 2022 06:25:25 -0700 (PDT) Received: by mail-wm1-x333.google.com with SMTP id c130-20020a1c3588000000b0039c6fd897b4so1522733wma.4 for ; Thu, 23 Jun 2022 06:25:25 -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=GFVKuLkgQrpfQUY3Kp2/8Huzegm57YAmtcraHP2vi/Y=; b=mNK6qJ989mBNyo38SuaNqu88+9ks99jxdQHz/xV+zGSvelESvdBy+pHBB1MaxBUFny AjcBVFWCaHyPdj3uiHEtmC/sGmz6CO8jHwQGhAbHhJitJ1LdwHaS5DVlkWzQ+1Kmntd6 Y24+zgv7kV2bhN8xom4D6a6DPDqXx7sghU7AUHclncZ6WAAGHUof2sCr9g2WBzqsxGCn 97C788CPc2KS4bXI1PezWMaMX35suDfgLxZWGx+JmuZpFxL0RYwMz8UxgvERJIAy0NzT 0gRTTvQc7wlRbeLU9Ax9YLEnEl2W/zib44gtVipqsm3npW8smeGZ/XQ4GTss8vd/3vza jbjA== 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=GFVKuLkgQrpfQUY3Kp2/8Huzegm57YAmtcraHP2vi/Y=; b=xTL+Z0Ienr8NgR5dlKFnNaozZJvUqKrRG5IfrG+x61Iuw2qjI0q3TknuWjV6hsR56Q Oz+p4a44Rki/67kMbdPnHIIh6ATgJhFVwtGyXV1mgN16xBvzsDyqC9NW6TVzVAfLzxPY jsKBOTeig1u1Q+79TxUEDny+6hmO34LmqnNJdfuGukqFDfTO/CqImJuo1EI78keonPoT RedlxPupmyapCpn0hXUO9rfCIgWHw52lKSwL0QivL6yvAV3Bm+iO7OK2ZYG9iibup7fu Oh0V0MjcmVnQC7oYOz+TWwNcqT59ux3f0xnVUPE/vsv5ORj77mdt7orrJ0YLrbeogmKN DztQ== X-Gm-Message-State: AJIora8c4BhQGzXDXybGDizYdz1a7gA7kpdw/yu/KCWk5GlBRl68p5Bt rRKGfuOjwPInmVZnENI3X93ulASyWsNADq1K X-Google-Smtp-Source: AGRyM1tvWS/JJVLYv1onpbf6sZBPwb2QdY0AaZg/g+VrZHuLFCiUejbxjm4TgwcNyNjFdIHeTBto/A== X-Received: by 2002:a05:600c:3d16:b0:39e:f07b:77a5 with SMTP id bh22-20020a05600c3d1600b0039ef07b77a5mr4165150wmb.140.1655990723611; Thu, 23 Jun 2022 06:25:23 -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 z14-20020a7bc7ce000000b0039c5a765388sm3160620wmk.28.2022.06.23.06.25.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 23 Jun 2022 06:25:23 -0700 (PDT) From: Pavel Begunkov To: io-uring@vger.kernel.org Cc: Jens Axboe , asml.silence@gmail.com Subject: [PATCH for-next v2 0/6] poll cleanups and optimisations Date: Thu, 23 Jun 2022 14:24:43 +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%. v2: fix inverted EPOLLET check 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(-)