Received: by 2002:ac0:a581:0:0:0:0:0 with SMTP id m1-v6csp2712376imm; Sun, 24 Jun 2018 02:51:24 -0700 (PDT) X-Google-Smtp-Source: ADUXVKL5gfVUFgyuqTsuoe3GUo4mDyJzPQtUS6hrsSwxxriANPYu3/RIx1v/YR2sjG+6xLfWYGfs X-Received: by 2002:a17:902:8306:: with SMTP id bd6-v6mr8230668plb.120.1529833884694; Sun, 24 Jun 2018 02:51:24 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1529833884; cv=none; d=google.com; s=arc-20160816; b=gnlwk5oBNe3sE0vuuUPw0lkTFZo7yMWZ9u2VFF5zkoIezssTa9TwkCdcqnzu6jB6ds qcN24IdSwgKXhigGkfCHxWq/HC2MDKsC4s/79G1Lc7p34ZxH5DkF7ZvsI8I6xyVSHrkO GoglsIjbenaBbZ3awGm76+FKZ3vIxf4i8Dm4ei8jVlDXSWix7A2CUavPetx0LilAyJjX gjJY5mEBCNl3YJjbB0+a57AQrqU5qWj4BjDthEZnolZ03zPdyspX3xP7kLSrx9aqqvjm 1xegEtYBPG03Z3BbwVjWOdSP/2sXIb5ZfqeFu7UUT3n7ZBhw8QwcMTR2Heh1zVWMhH9O rjAw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:user-agent:references :message-id:in-reply-to:subject:cc:to:from:date :arc-authentication-results; bh=gS9k7I/BCKMPsBu00By03cDt4lTHLUJzWKARVqVPJW8=; b=EVU3CnkheaNFo3dLiO8O0ahipRM8gb00WTes3Dz+k1CYfy14JB0eRIJ1VltS9nm8lD 4QLGQjJCbHbXfOfUF/tUAMYUlKB120v7+XgZsuzBAz5VT3Xi+UoeoXiHzpa6rer16g8U BUHxSM6YL4H01i1APkONIzI5Bj7OmKBPxbdiJ+rANfhXxAgOSlsj8588xUaOm2mVV3cV t9M/DL2XcTMkSXVAaPNZtzHef4J0Rq3VxIvjgQePkVA0t7V/6kZLUENTdl/ffpJEWWsV xUz+OJVqhIqoAqNVRdmDin6kEYpJlUWWg962HletP+AH1MAxsaJ8m71JLVQSjw5FXOiy Esdw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id 7-v6si11564176plc.179.2018.06.24.02.51.10; Sun, 24 Jun 2018 02:51:24 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752136AbeFXJtP (ORCPT + 99 others); Sun, 24 Jun 2018 05:49:15 -0400 Received: from Galois.linutronix.de ([146.0.238.70]:44794 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751900AbeFXJtO (ORCPT ); Sun, 24 Jun 2018 05:49:14 -0400 Received: from p4fea482e.dip0.t-ipconnect.de ([79.234.72.46] helo=nanos) by Galois.linutronix.de with esmtpsa (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1fX1du-0003KG-Oy; Sun, 24 Jun 2018 11:49:10 +0200 Date: Sun, 24 Jun 2018 11:49:10 +0200 (CEST) From: Thomas Gleixner To: Lukas Wunner cc: Bjorn Helgaas , Mika Westerberg , linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org Subject: Re: [PATCH v2 2/2] genirq: Synchronize only with single thread on free_irq() In-Reply-To: Message-ID: References: <32fc25aa35ecef4b2692f57687bb7fc2a57230e2.1529828292.git.lukas@wunner.de> User-Agent: Alpine 2.21 (DEB 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, 24 Jun 2018, Lukas Wunner wrote: > When pciehp is converted to threaded IRQ handling, removal of unplugged > devices below a PCIe hotplug port happens synchronously in the IRQ > thread. Removal of devices typically entails a call to free_irq() by > their drivers. Is this an actual mainline problem or did you discover that in course of upcoming work? Thanks, tglx