From nobody Sun Sep 14 16:11:31 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 664BDC25B4E for ; Fri, 20 Jan 2023 16:55:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231208AbjATQzI (ORCPT ); Fri, 20 Jan 2023 11:55:08 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38420 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231184AbjATQyv (ORCPT ); Fri, 20 Jan 2023 11:54:51 -0500 Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C41C93E082 for ; Fri, 20 Jan 2023 08:54:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1674233690; x=1705769690; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=xFhoZRe+ga3F++VLKtHLfxXrLB7Vt7EqQlS21a706ZY=; b=MM+zQFT0wXwK31dBhb1kOoNPkuHVtmnf8m1lE2MumxdC1WhBM0lZgiZk RTzRagVxlAQOC7vyJcIUZhmPZEVSaKYE4KNv9foi90wl3OJFyFiaAsdOG q5HAedZuERtqECVnDyIMc7Y6KQI+sIpv3vtNvggFWhb6cQWUysnvA8JPO GSohP3dlqWlC1mllckphBh3Z0A+cF7Ew9dPwuDlRztD3lRSdFEjavcwtx Xjs7fyGb3zs5JTGHQxoFzpRw+IEHnzrnymMT5w4RgAoKE28EM0visZaB7 Uw4EnulJw8g3tJKjxEmPw3GgdyEQzSkolsIUxg6thH8SzeAN9RtDS5glT A==; X-IronPort-AV: E=McAfee;i="6500,9779,10596"; a="324315205" X-IronPort-AV: E=Sophos;i="5.97,232,1669104000"; d="scan'208";a="324315205" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Jan 2023 08:54:48 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10596"; a="638207857" X-IronPort-AV: E=Sophos;i="5.97,232,1669104000"; d="scan'208";a="638207857" Received: from kanliang-dev.jf.intel.com ([10.165.154.102]) by orsmga006.jf.intel.com with ESMTP; 20 Jan 2023 08:54:46 -0800 From: kan.liang@linux.intel.com To: joro@8bytes.org, will@kernel.org, baolu.lu@linux.intel.com, dwmw2@infradead.org, robin.murphy@arm.com, robert.moore@intel.com, rafael.j.wysocki@intel.com, lenb@kernel.org, iommu@lists.linux.dev, linux-kernel@vger.kernel.org Cc: yu-cheng.yu@intel.com, Kan Liang Subject: [PATCH V3 7/7] iommu/vt-d: Enable IOMMU perfmon support Date: Fri, 20 Jan 2023 08:54:08 -0800 Message-Id: <20230120165408.500511-8-kan.liang@linux.intel.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20230120165408.500511-1-kan.liang@linux.intel.com> References: <20230120165408.500511-1-kan.liang@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Kan Liang Register and enable an IOMMU perfmon for each active IOMMU device. The failure of IOMMU perfmon registration doesn't impact other functionalities of an IOMMU device. Signed-off-by: Kan Liang --- drivers/iommu/intel/dmar.c | 3 +++ drivers/iommu/intel/iommu.c | 3 +++ 2 files changed, 6 insertions(+) diff --git a/drivers/iommu/intel/dmar.c b/drivers/iommu/intel/dmar.c index 43db6ebe8b57..6acfe879589c 100644 --- a/drivers/iommu/intel/dmar.c +++ b/drivers/iommu/intel/dmar.c @@ -1144,6 +1144,8 @@ static int alloc_iommu(struct dmar_drhd_unit *drhd) err =3D iommu_device_register(&iommu->iommu, &intel_iommu_ops, NULL); if (err) goto err_sysfs; + + iommu_pmu_register(iommu); } =20 drhd->iommu =3D iommu; @@ -1166,6 +1168,7 @@ static int alloc_iommu(struct dmar_drhd_unit *drhd) static void free_iommu(struct intel_iommu *iommu) { if (intel_iommu_enabled && !iommu->drhd->ignored) { + iommu_pmu_unregister(iommu); iommu_device_unregister(&iommu->iommu); iommu_device_sysfs_remove(&iommu->iommu); } diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index 560a54c3cbda..d39787944cc7 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -30,6 +30,7 @@ #include "../iommu-sva.h" #include "pasid.h" #include "cap_audit.h" +#include "perfmon.h" =20 #define ROOT_SIZE VTD_PAGE_SIZE #define CONTEXT_SIZE VTD_PAGE_SIZE @@ -4013,6 +4014,8 @@ int __init intel_iommu_init(void) intel_iommu_groups, "%s", iommu->name); iommu_device_register(&iommu->iommu, &intel_iommu_ops, NULL); + + iommu_pmu_register(iommu); } up_read(&dmar_global_lock); =20 --=20 2.35.1