From patchwork Tue Jun 2 11:37:20 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tvrtko Ursulin X-Patchwork-Id: 6528391 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 65C92C0020 for ; Tue, 2 Jun 2015 11:37:39 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 89F502052A for ; Tue, 2 Jun 2015 11:37:38 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 70FD52051F for ; Tue, 2 Jun 2015 11:37:37 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E61D06E806; Tue, 2 Jun 2015 04:37:35 -0700 (PDT) X-Original-To: Intel-gfx@lists.freedesktop.org Delivered-To: Intel-gfx@lists.freedesktop.org Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by gabe.freedesktop.org (Postfix) with ESMTP id 1A4DB6E806 for ; Tue, 2 Jun 2015 04:37:34 -0700 (PDT) Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga102.fm.intel.com with ESMTP; 02 Jun 2015 04:37:26 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.13,539,1427785200"; d="scan'208";a="501478176" Received: from tursulin-linux.isw.intel.com ([10.102.226.59]) by FMSMGA003.fm.intel.com with ESMTP; 02 Jun 2015 04:37:24 -0700 From: Tvrtko Ursulin To: Intel-gfx@lists.freedesktop.org Date: Tue, 2 Jun 2015 12:37:20 +0100 Message-Id: <1433245040-19931-1-git-send-email-tvrtko.ursulin@linux.intel.com> X-Mailer: git-send-email 2.4.0 MIME-Version: 1.0 Cc: Alexander Shishkin , x86@kernel.org, "Peter Zijlstra \(Intel\)" , Ingo Molnar Subject: [Intel-gfx] [PATCH] perf/x86/intel/pt: Fix lockdep interaction X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.18 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-Spam-Status: No, score=-3.2 required=5.0 tests=BAYES_00,HK_RANDOM_FROM, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Tvrtko Ursulin Since this drivers creates attributes on the heap, lockdep gets upset and disabled itself. Fix by setting ignore_lockdep flags for problematic attributes. Signed-off-by: Tvrtko Ursulin Cc: Alexander Shishkin Cc: Ingo Molnar Cc: Peter Zijlstra (Intel) Cc: x86@kernel.org Cc: Micha? Winiarski Tested-By: Intel Graphics QA PRTS (Patch Regression Test System Contact: shuang.he@intel.com) --- Not saying this is a right fix but lets say I am trying to force the issue. :) --- arch/x86/kernel/cpu/perf_event_intel_pt.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/arch/x86/kernel/cpu/perf_event_intel_pt.c b/arch/x86/kernel/cpu/perf_event_intel_pt.c index ffe666c..1cff27b 100644 --- a/arch/x86/kernel/cpu/perf_event_intel_pt.c +++ b/arch/x86/kernel/cpu/perf_event_intel_pt.c @@ -153,9 +153,10 @@ static int __init pt_pmu_hw_init(void) sysfs_attr_init(&de_attrs->attr.attr); - de_attr->attr.attr.mode = S_IRUGO; - de_attr->attr.show = pt_cap_show; - de_attr->var = (void *)i; + de_attr->attr.attr.mode = S_IRUGO; + de_attr->attr.show = pt_cap_show; + de_attr->attr.attr.ignore_lockdep = 1; + de_attr->var = (void *)i; attrs[i] = &de_attr->attr.attr; }