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=-6.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,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 4C36EC4363A for ; Mon, 26 Oct 2020 20:33:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F3B1820809 for ; Mon, 26 Oct 2020 20:33:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=kernel-dk.20150623.gappssmtp.com header.i=@kernel-dk.20150623.gappssmtp.com header.b="vc/H70RY" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732472AbgJZUdP (ORCPT ); Mon, 26 Oct 2020 16:33:15 -0400 Received: from mail-il1-f177.google.com ([209.85.166.177]:47012 "EHLO mail-il1-f177.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731933AbgJZUcf (ORCPT ); Mon, 26 Oct 2020 16:32:35 -0400 Received: by mail-il1-f177.google.com with SMTP id a20so9877260ilk.13 for ; Mon, 26 Oct 2020 13:32:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=Ej2GMD3juW/HPbjlUpE3qDooC5R+I0d7dBs1GT637cs=; b=vc/H70RYyC5V5F5lu6wLgt7+9bIn1CccBQcJHwMeViRuDSFz1rhLmAjcbeeAq54dWx oX0uBJiR2QvZSRMlLdeJiXZujRIE0xfM4u+PoaTHljw5MEB/kanXgmfE2XRvtcIjKNU5 ZSAwdNgrXvI1c4lN5xFvMO4WgVIoRl49ciHu47462Tcyeg+SXr1SxxofrjylXVRgmI0Q K/LLrlg0SV1PECUo0yLIXdiESvvnXfO0iWiz9OHYopQk9HpSifZkCsOp5SB+L7cBw1Eg tzjbGDjHelpJ72CVaA5mXiMWzoRFBVYInm5Z78csw0eaKn29OxZQ1rLYjVMG5b10+QXJ vacg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=Ej2GMD3juW/HPbjlUpE3qDooC5R+I0d7dBs1GT637cs=; b=DDf6r/UHHldwS8rg8KHeV/+Uhadxjc0gTjdPYZk9NN+n7cz8KkJdJWt52qdn+QPh0W cYnUpQP5xBZeaprwRKOuHLVhBPBHoXIaG6rsck53zhRWR01mtgSzApLEFSHRg/1kv1gs LOhnTbVPlRjOSkymvW330mrWuYVfhJ0aFoxWydL52Hgi+m69pue+UviLZeC3AhMaNBtm P8Gu3qelBrBzdjMBr+0xek4vt9NnkqJMx6wZx9oTw5CyKiIixQOfBjo6Fccda5NRw0B6 RDJWE0e1yszl8l3ScNrNqobD/fH61JT3bhLiJZ6RYwLO6zPpqj0fiR5l6zVj1lSd2DNa xqzQ== X-Gm-Message-State: AOAM531WB4zjg1vB+c1rAhZAgrbH/lfFWHugYFbbdO6O1ysdhielryZD TXyo8rljHGByUerToYvminVEclFDyiXsBg== X-Google-Smtp-Source: ABdhPJwKMl5RhS+cjY9T42TGF/AeVTmX/CoaoNgStOF3T6iQ+IDDnrcU1dRHfbZSsdlfaGFgHUSS5w== X-Received: by 2002:a05:6e02:f0e:: with SMTP id x14mr11787434ilj.307.1603744353856; Mon, 26 Oct 2020 13:32:33 -0700 (PDT) Received: from p1.localdomain ([65.144.74.34]) by smtp.gmail.com with ESMTPSA id e12sm6770373ilq.65.2020.10.26.13.32.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 26 Oct 2020 13:32:33 -0700 (PDT) From: Jens Axboe To: linux-kernel@vger.kernel.org, io-uring@vger.kernel.org Cc: peterz@infradead.org, oleg@redhat.com, tglx@linutronix.de Subject: [PATCHSET v6a 0/4] Add support for TIF_NOTIFY_SIGNAL Date: Mon, 26 Oct 2020 14:32:26 -0600 Message-Id: <20201026203230.386348-1-axboe@kernel.dk> X-Mailer: git-send-email 2.29.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org Hi, The goal is this patch series is to decouple TWA_SIGNAL based task_work from real signals and signal delivery. The motivation is speeding up TWA_SIGNAL based task_work, particularly for threaded setups where ->sighand is shared across threads. See the last patch for numbers. On top of this I have an arch series that wires up TIF_NOTIFY_SIGNAL for all archs, and then procedes to kill off the legacy TWA_SIGNAL path, and the code associated with it. Changes since v6: - Rebase to 5.10-rc1 -- Jens Axboe