From patchwork Thu Aug 1 14:17:32 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tvrtko Ursulin X-Patchwork-Id: 11070815 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C5C9B1395 for ; Thu, 1 Aug 2019 14:18:04 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B86EF28438 for ; Thu, 1 Aug 2019 14:18:04 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id ACCA7285DB; Thu, 1 Aug 2019 14:18:04 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00,HK_RANDOM_FROM, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 415B82865F for ; Thu, 1 Aug 2019 14:18:04 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B3E946E658; Thu, 1 Aug 2019 14:18:03 +0000 (UTC) X-Original-To: Intel-gfx@lists.freedesktop.org Delivered-To: Intel-gfx@lists.freedesktop.org Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTPS id 19A8A6E657 for ; Thu, 1 Aug 2019 14:18:02 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga103.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 01 Aug 2019 07:18:01 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,334,1559545200"; d="scan'208";a="172927239" Received: from gadevlin-mobl.ger.corp.intel.com (HELO localhost.localdomain) ([10.251.95.57]) by fmsmga008.fm.intel.com with ESMTP; 01 Aug 2019 07:18:00 -0700 From: Tvrtko Ursulin To: Intel-gfx@lists.freedesktop.org Date: Thu, 1 Aug 2019 15:17:32 +0100 Message-Id: <20190801141732.31335-5-tvrtko.ursulin@linux.intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190801141732.31335-1-tvrtko.ursulin@linux.intel.com> References: <20190801141732.31335-1-tvrtko.ursulin@linux.intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 5/5] drm/i915/pmu: Support multiple GPUs X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP From: Tvrtko Ursulin With discrete graphics system can have both integrated and discrete GPU handled by i915. Currently we use a fixed name ("i915") when registering as the uncore PMU provider which stops working in this case. To fix this we add the PCI device name string to non-integrated devices handled by us. Integrated devices keep the legacy name preserving backward compatibility. v2: * Detect IGP and keep legacy name. (Michal) * Use PCI device name as suffix. (Michal, Chris) Signed-off-by: Tvrtko Ursulin Cc: Chris Wilson Cc: Michal Wajdeczko Reviewed-by: Chris Wilson --- Is our GPU always "0000:00:02.0"? CI will tell me. --- drivers/gpu/drm/i915/i915_pmu.c | 27 +++++++++++++++++++++++++-- drivers/gpu/drm/i915/i915_pmu.h | 4 ++++ 2 files changed, 29 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_pmu.c b/drivers/gpu/drm/i915/i915_pmu.c index e0e0180bca7c..9a404d85c4e9 100644 --- a/drivers/gpu/drm/i915/i915_pmu.c +++ b/drivers/gpu/drm/i915/i915_pmu.c @@ -1053,6 +1053,15 @@ static void i915_pmu_unregister_cpuhp_state(struct i915_pmu *pmu) cpuhp_remove_multi_state(cpuhp_slot); } +static bool is_igp(struct pci_dev *pdev) +{ + /* IGP is 0000:00:02.0 */ + return pdev->bus->parent == NULL && + pdev->bus->number == 0 && + PCI_SLOT(pdev->devfn) == 2 && + PCI_FUNC(pdev->devfn) == 0; +} + void i915_pmu_register(struct drm_i915_private *i915) { struct i915_pmu *pmu = &i915->pmu; @@ -1083,10 +1092,19 @@ void i915_pmu_register(struct drm_i915_private *i915) hrtimer_init(&pmu->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); pmu->timer.function = i915_sample; - ret = perf_pmu_register(&pmu->base, "i915", -1); - if (ret) + if (!is_igp(i915->drm.pdev)) + pmu->name = kasprintf(GFP_KERNEL, + "i915-%s", + dev_name(i915->drm.dev)); + else + pmu->name = "i915"; + if (!pmu->name) goto err; + ret = perf_pmu_register(&pmu->base, pmu->name, -1); + if (ret) + goto err_name; + ret = i915_pmu_register_cpuhp_state(pmu); if (ret) goto err_unreg; @@ -1095,6 +1113,9 @@ void i915_pmu_register(struct drm_i915_private *i915) err_unreg: perf_pmu_unregister(&pmu->base); +err_name: + if (!is_igp(i915->drm.pdev)) + kfree(pmu->name); err: pmu->base.event_init = NULL; free_event_attributes(pmu); @@ -1116,5 +1137,7 @@ void i915_pmu_unregister(struct drm_i915_private *i915) perf_pmu_unregister(&pmu->base); pmu->base.event_init = NULL; + if (!is_igp(i915->drm.pdev)) + kfree(pmu->name); free_event_attributes(pmu); } diff --git a/drivers/gpu/drm/i915/i915_pmu.h b/drivers/gpu/drm/i915/i915_pmu.h index 4fc4f2478301..8d7a388dcdc7 100644 --- a/drivers/gpu/drm/i915/i915_pmu.h +++ b/drivers/gpu/drm/i915/i915_pmu.h @@ -46,6 +46,10 @@ struct i915_pmu { * @base: PMU base. */ struct pmu base; + /** + * @name: Name as registered with perf core. + */ + char *name; /** * @lock: Lock protecting enable mask and ref count handling. */