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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 4C346C742BA for ; Fri, 12 Jul 2019 12:38:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2592C20645 for ; Fri, 12 Jul 2019 12:38:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1562935110; bh=MQW6gcqWb9Ou1jl2cgKzV6NWp7OyOLckPyJ0EKuQCLo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=drgJPoP42rVSB3KVoZJbWR5NcwJMOpo2VP0+kwwHecPz6jZqEF3RHEG69eSVShlso EAG34H8+9nTQOdiaO4aXkB7uRZo6o9SbrNGOXOotES+s/g5qDkiRKLkgjZPTlPDW1W JZU3DPyqB+GVvnIwTvDDJBOj46QcsSUHiNAPrn0U= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728941AbfGLM3L (ORCPT ); Fri, 12 Jul 2019 08:29:11 -0400 Received: from mail.kernel.org ([198.145.29.99]:43872 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728389AbfGLM3K (ORCPT ); Fri, 12 Jul 2019 08:29:10 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 35DCD208E4; Fri, 12 Jul 2019 12:29:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1562934549; bh=MQW6gcqWb9Ou1jl2cgKzV6NWp7OyOLckPyJ0EKuQCLo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ISva7/9JSrYKq+/prpgavgUYB5GeE/cT+ZFmMdYi/iKx1CJ0iJ+kC0DFYJuQux1cW 0ZacZfrlpvrQfHEVGsc3ddaH4K/rmZpw4JwNV4sJq03qyTYep1ShwfrHNF1ayeuF7I gthRCrraMYQDYTnwtDOtFyJsN0AsV9Cp4T/2mr0s= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Dennis Dalessandro , Mike Marciniszyn , Doug Ledford , Sasha Levin Subject: [PATCH 5.1 075/138] IB/hfi1: Handle wakeup of orphaned QPs for pio Date: Fri, 12 Jul 2019 14:18:59 +0200 Message-Id: <20190712121631.570931948@linuxfoundation.org> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190712121628.731888964@linuxfoundation.org> References: <20190712121628.731888964@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org [ Upstream commit 099a884ba4c00145cef283d36e050726311c2e95 ] Once a send context is taken down due to a link failure, any QPs waiting for pio credits will stay on the waitlist indefinitely. Fix by wakeing up all QPs linked to piowait list. Fixes: 7724105686e7 ("IB/hfi1: add driver files") Reviewed-by: Dennis Dalessandro Signed-off-by: Mike Marciniszyn Signed-off-by: Dennis Dalessandro Signed-off-by: Doug Ledford Signed-off-by: Sasha Levin --- drivers/infiniband/hw/hfi1/pio.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/drivers/infiniband/hw/hfi1/pio.c b/drivers/infiniband/hw/hfi1/pio.c index a1de566fe95e..1ee47838d4de 100644 --- a/drivers/infiniband/hw/hfi1/pio.c +++ b/drivers/infiniband/hw/hfi1/pio.c @@ -952,6 +952,22 @@ void sc_disable(struct send_context *sc) } } spin_unlock(&sc->release_lock); + + write_seqlock(&sc->waitlock); + while (!list_empty(&sc->piowait)) { + struct iowait *wait; + struct rvt_qp *qp; + struct hfi1_qp_priv *priv; + + wait = list_first_entry(&sc->piowait, struct iowait, list); + qp = iowait_to_qp(wait); + priv = qp->priv; + list_del_init(&priv->s_iowait.list); + priv->s_iowait.lock = NULL; + hfi1_qp_wakeup(qp, RVT_S_WAIT_PIO | HFI1_S_WAIT_PIO_DRAIN); + } + write_sequnlock(&sc->waitlock); + spin_unlock_irq(&sc->alloc_lock); } -- 2.20.1