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=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 39A13C48BD3 for ; Thu, 27 Jun 2019 00:50:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 01CF02082F for ; Thu, 27 Jun 2019 00:50:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1561596653; bh=tdF87nFJwnoC6wKG5yAiEGQ54gedFNILpUaj46a0uC8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ZOpRsFzw4W4noXNYJRLlkcXS9Z2DSOa5ixT9tyt2olvZxhHEjaGvNsLC4zBsAG1n4 06J13SBUY0Hi4YMb85Q/2CNMBP2+refy7wp4dwsu5yE0vbClJQ5QOKzsDlE6Y/YPF3 iR3GFWpeZVsDLv1H2DAt1coj7G1nGyMco+JDDU/E= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728373AbfF0Auv (ORCPT ); Wed, 26 Jun 2019 20:50:51 -0400 Received: from mail.kernel.org ([198.145.29.99]:39180 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727290AbfF0Aex (ORCPT ); Wed, 26 Jun 2019 20:34:53 -0400 Received: from sasha-vm.mshome.net (unknown [107.242.116.147]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 69097217F4; Thu, 27 Jun 2019 00:34:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1561595692; bh=tdF87nFJwnoC6wKG5yAiEGQ54gedFNILpUaj46a0uC8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gz4reelR8SwowZsO3Bp1nrkEXK+EdIUBCQvdQMYJmtPYmvX76I9jtlV8IknqjCkJm TwBJhvxOFRNT5gZg7aM2CJQlSX5vf+FihPAvzUS48q/tCpHCXiEUAz/tH+utIICnvA aZDiD8hjiITAA9GRpPB43dhb9bHsX0W0dWjaga2o= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Mike Marciniszyn , Dennis Dalessandro , Doug Ledford , Sasha Levin , linux-rdma@vger.kernel.org Subject: [PATCH AUTOSEL 5.1 81/95] IB/hfi1: Handle wakeup of orphaned QPs for pio Date: Wed, 26 Jun 2019 20:30:06 -0400 Message-Id: <20190627003021.19867-81-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190627003021.19867-1-sashal@kernel.org> References: <20190627003021.19867-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Mike Marciniszyn [ 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