From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.7 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 868BAC2D0C2 for ; Mon, 30 Dec 2019 18:25:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4E3B620722 for ; Mon, 30 Dec 2019 18:25:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="f6FnKVTT" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727572AbfL3SZd (ORCPT ); Mon, 30 Dec 2019 13:25:33 -0500 Received: from mail-wm1-f50.google.com ([209.85.128.50]:33822 "EHLO mail-wm1-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727403AbfL3SZc (ORCPT ); Mon, 30 Dec 2019 13:25:32 -0500 Received: by mail-wm1-f50.google.com with SMTP id c127so400289wme.1 for ; Mon, 30 Dec 2019 10:25:31 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:subject:date:message-id:mime-version :content-transfer-encoding; bh=Gv6hwKDyZKaL8DEh7J4mSstLxkq4FxBrnaFcTHbe0rk=; b=f6FnKVTTZCIMDIBgEBmirKeWnRcpCpmjapdOnkYCmkBFt32wgb/umpTGfj2FzlVrPt E3QhhPfXha9XLk22bHnaoU25D9F2K47a8dTeGBd6Dx6/K1L96mMXmKL7mdNg289cCj7Y gE0zp0KH+hxLmbH37303TBZv/G46OCFZz5WWMmrh5ksVIDkHEH6/KLhXvVXxj+3yluzx b/XlzvgS4+vZF+/VnkxajJMakx5OLmsbBcs3DvG2FjL5+FTjAxwaeD9Iyroy2YaFuHR2 oZBkYy3zFpSFpHFBWh2Rj8flEWYBl1ffHlSE3aGLVJMF0CeJGU1TaAUQjabMAPTZSI1L sHBw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:mime-version :content-transfer-encoding; bh=Gv6hwKDyZKaL8DEh7J4mSstLxkq4FxBrnaFcTHbe0rk=; b=ubIm04HlngcAgR85bHnpkJxrCQODbuhnt0m9XD+ITa7njfKjBvVKaHStt74edwThKB qQITTXAiZmDPdxfcraOT7w0z69SFKDJXuNmIXaFyg/DTDdZyukmQKQrKc1gOgsBO70fs c9l/5KNKNGhoHI1VDGnhgrhfHcnbeIdsFuIhM84DubLnhhEtlHmzEg4CdewqlOu3mfTt U3eyg174C+lQScnhgziprGNdq8LHypMOGgeOCADQEKhekEqyP56Fgf51S3q1A7tuA1YD 9eWG0/JVNVsLLrn7KxCYrEoiM3vNilqJVxqtUt3Gap35bnk+Vp4MLSZw6j/YUQEY4kj+ vJng== X-Gm-Message-State: APjAAAULySQa4pZxvpT/kfdCwHpfjP5ZBFAjigfXPOsLf+1HyHHsz1o/ FOtShxxeSbRxMFkJIBz5ouERq7y/ X-Google-Smtp-Source: APXvYqwdx5v511AE4DgCIbElWkB7ir9wyiaZ/OTuz1YAJTiCqpg0sPesRQQ23MSclh5wlQXfr80cCg== X-Received: by 2002:a7b:cbc8:: with SMTP id n8mr287568wmi.35.1577730331054; Mon, 30 Dec 2019 10:25:31 -0800 (PST) Received: from localhost.localdomain ([109.126.145.157]) by smtp.gmail.com with ESMTPSA id u24sm231590wml.10.2019.12.30.10.25.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 30 Dec 2019 10:25:30 -0800 (PST) From: Pavel Begunkov To: Jens Axboe , io-uring@vger.kernel.org Subject: [PATCH 0/4] a bunch of changes for submmission path Date: Mon, 30 Dec 2019 21:24:43 +0300 Message-Id: X-Mailer: git-send-email 2.24.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: io-uring-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org This is mostly about batching smp_load_acquire() in io_get_sqring() with other minor changes. Pavel Begunkov (4): io_uring: clamp to_submit in io_submit_sqes() io_uring: optimise head checks in io_get_sqring() io_uring: optimise commit_sqring() for common case io_uring: remove extra io_wq_current_is_worker() fs/io_uring.c | 32 ++++++++++++-------------------- 1 file changed, 12 insertions(+), 20 deletions(-) -- 2.24.0