From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A79551B043C; Tue, 5 Aug 2025 01:28:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.12 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754357297; cv=none; b=HdQoHse9vd/TkpZ9ld4RVezZErKE+OHmYU/ygPOQ37ZspKvtPVh2nVGOcVidDdEl8+JGpwJHqF8iGjQ0VY4cQ+DO2wLNQs5CnWtSK2k42hCCDfBVMi6ionezv+wjVwFCcNRleJkf4/2E3ksmTGDD2I8VYZU+KT2X0oxTmVVdAqI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754357297; c=relaxed/simple; bh=JMS2LYeIWmEtqp+NnkcPw0v2TmLdu2lQE4ttQDJh8EA=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=iIjdK6ZbSaB1vRGDWYUx3rE90oaqJv56F3Y9I6mqJynyQb5w1nvRhueUk5Q9//kyzpAckY2/GRVu8bcZaMqmAYl4mSWL65eNfEzeOzfyOlKoXf1glX55+OtLWpHRtIUf45EHkIQZpdhzYDGw130SNpSm2AnCj3Se+5sVVRPvxmw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=l6sGuweE; arc=none smtp.client-ip=198.175.65.12 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="l6sGuweE" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1754357295; x=1785893295; h=from:date:subject:mime-version:content-transfer-encoding: message-id:references:in-reply-to:to:cc; bh=JMS2LYeIWmEtqp+NnkcPw0v2TmLdu2lQE4ttQDJh8EA=; b=l6sGuweE1Ti3+kIVhfVZEKPO9+1cp0tzrDlJrN+h+7QU9mssz3tA/0DU h+KbwtGYruW76DESVyGWx8bNrTVsUCn45i5KdCvKeS9dC9X1gvdRP+acl Sj6AK+Oa3LKpP9Zt3P7xhxcGCTbGQ6E225RI0fBR5E/h0ibuK7QcbsRWg QvQEFGsU3nyDvpLorlpocOy1Vfx51IXuHateqketI6vt+OjQTAmytM7tE UU+MY8F0J/RGXA4XshxcLHZSXXSzTLZmBPHnhjUlP8z9PSOIanwda3e2x C1xGY4GptVP3pw2CV7NUqjLIIT6igwyCyPqlOnysJgSP/xGtCbWrJF5Nh w==; X-CSE-ConnectionGUID: U1av+XVoROCqbJGOdA+XCw== X-CSE-MsgGUID: m8qyL/41Sv6QGitgAdRlYA== X-IronPort-AV: E=McAfee;i="6800,10657,11512"; a="68085359" X-IronPort-AV: E=Sophos;i="6.17,265,1747724400"; d="scan'208";a="68085359" Received: from orviesa005.jf.intel.com ([10.64.159.145]) by orvoesa104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Aug 2025 18:28:11 -0700 X-CSE-ConnectionGUID: TWmqdfBgRWKkZZ12fTEzlQ== X-CSE-MsgGUID: a/wrVA3WRfmvMZ0ZvsOkfQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.17,265,1747724400"; d="scan'208";a="169699554" Received: from vcostago-mobl3.jf.intel.com (HELO [10.98.32.147]) ([10.98.32.147]) by orviesa005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Aug 2025 18:28:11 -0700 From: Vinicius Costa Gomes Date: Mon, 04 Aug 2025 18:27:56 -0700 Subject: [PATCH 5/9] dmaengine: idxd: Allow DMA clients to empty the pending queue Precedence: bulk X-Mailing-List: dmaengine@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20250804-idxd-fix-flr-on-kernel-queues-v3-v1-5-4e020fbf52c1@intel.com> References: <20250804-idxd-fix-flr-on-kernel-queues-v3-v1-0-4e020fbf52c1@intel.com> In-Reply-To: <20250804-idxd-fix-flr-on-kernel-queues-v3-v1-0-4e020fbf52c1@intel.com> To: Dave Jiang , Vinod Koul , Fenghua Yu , Dan Williams Cc: dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, Vinicius Costa Gomes X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1754357291; l=1213; i=vinicius.gomes@intel.com; s=20230921; h=from:subject:message-id; bh=JMS2LYeIWmEtqp+NnkcPw0v2TmLdu2lQE4ttQDJh8EA=; b=6ZE7bcWpAuRpU+WG0zkCLCzOVH4nmAQUOwkvctGJihtale7M2ep3SLvUeVdRhxHeiPGqwWz8e tSzaGiQl0FiDxxjKR1NPbj9bqFeUhSqpv7NJaOdcdDgdvA8zDtfyeu3 X-Developer-Key: i=vinicius.gomes@intel.com; a=ed25519; pk=aJkrtgqgT6TZ8iIHSG8/rTPsmlYnjMrUjCsMYvCzntk= Send a request to drain all pending commands from the hardware queue when the DMA clients request. Signed-off-by: Vinicius Costa Gomes --- drivers/dma/idxd/dma.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/dma/idxd/dma.c b/drivers/dma/idxd/dma.c index dbecd699237e3ac5a73b49ed2097a897abc9a043..10356a00cbdfc2ddfeea629aa749c40e7eec0a56 100644 --- a/drivers/dma/idxd/dma.c +++ b/drivers/dma/idxd/dma.c @@ -194,6 +194,15 @@ static void idxd_dma_release(struct dma_device *device) kfree(idxd_dma); } +static int idxd_dma_terminate_all(struct dma_chan *c) +{ + struct idxd_wq *wq = to_idxd_wq(c); + + idxd_wq_drain(wq); + + return 0; +} + int idxd_register_dma_device(struct idxd_device *idxd) { struct idxd_dma_dev *idxd_dma; @@ -224,6 +233,7 @@ int idxd_register_dma_device(struct idxd_device *idxd) dma->device_issue_pending = idxd_dma_issue_pending; dma->device_alloc_chan_resources = idxd_dma_alloc_chan_resources; dma->device_free_chan_resources = idxd_dma_free_chan_resources; + dma->device_terminate_all = idxd_dma_terminate_all; rc = dma_async_device_register(dma); if (rc < 0) { -- 2.50.1