From patchwork Tue Oct 5 15:00:38 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sebastian Andrzej Siewior X-Patchwork-Id: 12537003 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C31A6C433EF for ; Tue, 5 Oct 2021 15:01:25 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8ECAD61244 for ; Tue, 5 Oct 2021 15:01:25 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 8ECAD61244 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linutronix.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D8A486F5EB; Tue, 5 Oct 2021 15:00:58 +0000 (UTC) Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) by gabe.freedesktop.org (Postfix) with ESMTPS id 63F6A6E41D; Tue, 5 Oct 2021 15:00:52 +0000 (UTC) From: Sebastian Andrzej Siewior DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1633446049; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=0URelBZGz8DTUCCDh3NKZZAQQHLT3jT0kolCu2bpf0E=; b=yRJUc6dQ71Ue4e/wQZsJ6G3YQpxMhz20LOa/72EomUAD6Jrv95aDij5FAwVusx9r6LHBby bJh7n4MF9wIgXUEX269hxydV7kvU4vJ13NLbwNcmHfMprixVCbJDQNPnVvhvyZkH0w87xu TAe2RxQpR82Vb/dLUl2cZvEWQO49bI7YthRGJwjSyfBqnzxgBgPz8nQy05Ct5Y+Wxxv45c C4N3qrnCy0aTzGdEQuefEceq9IRYJNM02UGhXn/f74y0tZVSh+IIYS8w4JXDTQLRlmRcAV o+B7A7zuq+i6tA9MIVWwAiTsyo5hXkUctpBFmSOoc0n2tkC7A4j7++cgyoy4hw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1633446049; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=0URelBZGz8DTUCCDh3NKZZAQQHLT3jT0kolCu2bpf0E=; b=Cv6QX/enAZNy96TVVRyh3NGN04wI5Mogg8Wq4TyddOu/4AgTord1Tj5MN1Sx+E2MjFcC07 WiCrx/lOdXmiAbAQ== To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Cc: Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , David Airlie , Daniel Vetter , Thomas Gleixner Subject: [PATCH 0/8] drm/i915: PREEMPT_RT related fixups. Date: Tue, 5 Oct 2021 17:00:38 +0200 Message-Id: <20211005150046.1000285-1-bigeasy@linutronix.de> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Hi, the following patches are from the PREEMPT_RT queue. It is mostly about disabling interrupts/preemption which leads to problems. Unfortunately DRM_I915_LOW_LEVEL_TRACEPOINTS had to be disabled because it acquires locks from within trace points. I tested it on a SandyBridge with built-in i915 by using X, OpenGL and playing videos without noticing any warnings. However, some code paths were not entered. Sebastian