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=-13.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 B311CC433E0 for ; Wed, 5 Aug 2020 20:25:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9A29F22B42 for ; Wed, 5 Aug 2020 20:25:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727035AbgHEUZc (ORCPT ); Wed, 5 Aug 2020 16:25:32 -0400 Received: from mga04.intel.com ([192.55.52.120]:48326 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726718AbgHEUZL (ORCPT ); Wed, 5 Aug 2020 16:25:11 -0400 IronPort-SDR: WhL7dtPdPEmIOngt+oBRyu3AHu4hEvmtvo/0smyy/hnwDgyhCP0FrQMY8zG7qL18AkRiU+mxCF Z7BGFwb8+mrw== X-IronPort-AV: E=McAfee;i="6000,8403,9704"; a="150111860" X-IronPort-AV: E=Sophos;i="5.75,438,1589266800"; d="scan'208";a="150111860" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Aug 2020 13:25:10 -0700 IronPort-SDR: EWxCIIhUZ+bOzadcqov1HsFFnhe8zEfU+4ogUmVH/U8MLMqmfTxW7YaDmDzb9XE2GhX8TABpIK TWrhb6jy6oVw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,438,1589266800"; d="scan'208";a="332958436" Received: from otc-lr-04.jf.intel.com ([10.54.39.143]) by orsmga007.jf.intel.com with ESMTP; 05 Aug 2020 13:25:10 -0700 From: kan.liang@linux.intel.com To: peterz@infradead.org, mingo@redhat.com, linux-kernel@vger.kernel.org Cc: bhelgaas@google.com, eranian@google.com, ak@linux.intel.com, Kan Liang Subject: [PATCH V2 2/6] perf/x86/intel/uncore: Factor out uncore_pci_find_dev_pmu() Date: Wed, 5 Aug 2020 13:24:07 -0700 Message-Id: <1596659051-95759-3-git-send-email-kan.liang@linux.intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1596659051-95759-1-git-send-email-kan.liang@linux.intel.com> References: <1596659051-95759-1-git-send-email-kan.liang@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Kan Liang When an uncore PCI sub driver gets a remove notification, the corresponding PMU has to be retrieved and unregistered. The codes, which find the corresponding PMU by comparing the pci_device_id table, can be shared. Factor out uncore_pci_find_dev_pmu(), which will be used later. There is no functional change. Signed-off-by: Kan Liang --- arch/x86/events/intel/uncore.c | 48 +++++++++++++++++++++++++++++------------- 1 file changed, 33 insertions(+), 15 deletions(-) diff --git a/arch/x86/events/intel/uncore.c b/arch/x86/events/intel/uncore.c index e14b03f..f6ff1b9 100644 --- a/arch/x86/events/intel/uncore.c +++ b/arch/x86/events/intel/uncore.c @@ -1008,6 +1008,37 @@ static int uncore_pci_get_dev_die_info(struct pci_dev *pdev, return 0; } + +/* + * Find the PMU of a PCI device. + * @pdev: The PCI device. + * @ids: The ID table of the available PCI devices with a PMU. + */ +static struct intel_uncore_pmu * +uncore_pci_find_dev_pmu(struct pci_dev *pdev, const struct pci_device_id *ids) +{ + struct intel_uncore_pmu *pmu = NULL; + struct intel_uncore_type *type; + kernel_ulong_t data; + unsigned int devfn; + + while (ids && ids->vendor) { + if ((ids->vendor == pdev->vendor) && + (ids->device == pdev->device)) { + data = ids->driver_data; + devfn = PCI_DEVFN(UNCORE_PCI_DEV_DEV(data), + UNCORE_PCI_DEV_FUNC(data)); + if (devfn == pdev->devfn) { + type = uncore_pci_uncores[UNCORE_PCI_DEV_TYPE(data)]; + pmu = &type->pmus[UNCORE_PCI_DEV_IDX(data)]; + break; + } + } + ids++; + } + return pmu; +} + /* * add a pci uncore device */ @@ -1039,21 +1070,8 @@ static int uncore_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id */ if (id->driver_data & ~0xffff) { struct pci_driver *pci_drv = pdev->driver; - const struct pci_device_id *ids = pci_drv->id_table; - unsigned int devfn; - - while (ids && ids->vendor) { - if ((ids->vendor == pdev->vendor) && - (ids->device == pdev->device)) { - devfn = PCI_DEVFN(UNCORE_PCI_DEV_DEV(ids->driver_data), - UNCORE_PCI_DEV_FUNC(ids->driver_data)); - if (devfn == pdev->devfn) { - pmu = &type->pmus[UNCORE_PCI_DEV_IDX(ids->driver_data)]; - break; - } - } - ids++; - } + + pmu = uncore_pci_find_dev_pmu(pdev, pci_drv->id_table); if (pmu == NULL) return -ENODEV; } else { -- 2.7.4