Received: by 2002:a05:6a10:22f:0:0:0:0 with SMTP id 15csp1400654pxk; Fri, 2 Oct 2020 08:40:58 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzNLgmey1XUTCjVj5Ek9qqRQOA9HFnEB8342bRQBTRLdP8RRK3mdlmLhjRWwR3A7Ho2gdBu X-Received: by 2002:a17:906:5402:: with SMTP id q2mr2853074ejo.316.1601653257982; Fri, 02 Oct 2020 08:40:57 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1601653257; cv=none; d=google.com; s=arc-20160816; b=RVhrYoFstxFeFlHR2IM89bEyCfZY8kPO5w5CM1Lu4kfYgTASWdIBSlGX/VF0dFgZey FPHIE6TYq/Mn+az66oz4U8+J3z8w1FgEd918Oef71B4HggiVywZzzHWYHz43EEYQfUIk SV9+WZrENIbMj8vub4Me8rgFCpgghPal+PDwEP/I9xxmQXlDDO3i2C/S+kv9p3F8R397 gpDlVqeZfPFAizH9MLajBsEXWzJACkQ6SsOrVNHJHT0ILOXiCL0xTy1G8/ck6NKWkevX M9tLoneQtLBD9t1VqWCbdFOrfe4gtR2u0y0oEUDYTKwqz3/mibLfcACQSKs4bhNrVLhy Thsw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:user-agent:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:from:date :dkim-signature; bh=36FCS78Qd5VasTsIOB0fmeKmJgKsqjwU3OSxRwKzeNc=; b=HpQXl2vohvt7FF//YR6vz0xTZ/bWY53BfjUhleC9g6KXQp/guCSaolznYlS43Q9bnL jHh0U1zclejPBsbgKGl56+NnZUtdX/fd14FoYO+7R/cARxPLtLxojBn9no9TMPhaQ6U1 D1/jEWnOsBkgRX1RlYLBx+C3cGevKn6Lzn9EuGYOVe3Gxy4MjRcW90fw/YL+Uk/U5Wel w3ifpTGufJu5NPjwFUV+5jrHTnTJtKJlCRqZS30lpHmPaN+X8KoTfAmfNqRaqf80vgmS OmFpAz2ix2wXLswj5GNY8hXkf6LCmnLprAKWH8XDqopdB2s+//ywAVCknMVumeT38vhM Xx2A== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=NaMPSmHD; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id c3si1250668edm.187.2020.10.02.08.40.33; Fri, 02 Oct 2020 08:40:57 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=NaMPSmHD; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388074AbgJBPi6 (ORCPT + 99 others); Fri, 2 Oct 2020 11:38:58 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:39421 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726176AbgJBPi5 (ORCPT ); Fri, 2 Oct 2020 11:38:57 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1601653136; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=36FCS78Qd5VasTsIOB0fmeKmJgKsqjwU3OSxRwKzeNc=; b=NaMPSmHDGrQJZ1TvzAkeEA/4zZ6iiHbp0tZxixI5Tppw7Ttf2Ug26NY6pJPvn9ZVZecATt FVt13kp1YkYuNKU8hJPrwSmbEwPLq9M2qiO5Lq7NBvmaQg4ebXHz4Fg8t9SQah/zh7Eg7l fp8UJY97SNfkFxnoRWQUzBO/KZs4JPM= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-463-7ZgihHfHOYG4JvHuV0Pt6g-1; Fri, 02 Oct 2020 11:38:54 -0400 X-MC-Unique: 7ZgihHfHOYG4JvHuV0Pt6g-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 233098030CE; Fri, 2 Oct 2020 15:38:53 +0000 (UTC) Received: from dhcp-27-174.brq.redhat.com (unknown [10.40.192.246]) by smtp.corp.redhat.com (Postfix) with SMTP id 9C5E573678; Fri, 2 Oct 2020 15:38:51 +0000 (UTC) Received: by dhcp-27-174.brq.redhat.com (nbSMTP-1.00) for uid 1000 oleg@redhat.com; Fri, 2 Oct 2020 17:38:52 +0200 (CEST) Date: Fri, 2 Oct 2020 17:38:50 +0200 From: Oleg Nesterov To: Thomas Gleixner Cc: Jens Axboe , linux-kernel@vger.kernel.org, io-uring@vger.kernel.org, peterz@infradead.org Subject: Re: [PATCH 3/3] task_work: use TIF_TASKWORK if available Message-ID: <20201002153849.GC29066@redhat.com> References: <20201001194208.1153522-1-axboe@kernel.dk> <20201001194208.1153522-4-axboe@kernel.dk> <20201002151415.GA29066@redhat.com> <871rigejb8.fsf@nanos.tec.linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <871rigejb8.fsf@nanos.tec.linutronix.de> User-Agent: Mutt/1.5.24 (2015-08-30) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10/02, Thomas Gleixner wrote: > > I think it's fundamentaly wrong that we have several places and several > flags which handle task_work_run() instead of having exactly one place > and one flag. Damn yes, agreed. Oleg.