Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S967020AbcCPXfh (ORCPT ); Wed, 16 Mar 2016 19:35:37 -0400 Received: from out2-smtp.messagingengine.com ([66.111.4.26]:56375 "EHLO out2-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934546AbcCPXff (ORCPT ); Wed, 16 Mar 2016 19:35:35 -0400 X-Sasl-enc: yCnfw9IUm1t8ZAT8ibyVpX8PuM0fMOUSsOzavToNPy8B 1458171334 Date: Wed, 16 Mar 2016 16:35:30 -0700 From: Greg Kroah-Hartman To: Joel Fernandes Cc: linux-rt-users@vger.kernel.org, Linux Kernel Mailing List , kernelnewbies , Steven Rostedt , Ingo Molnar , Peter Zijlstra , Thomas Gleixner Subject: Re: RFC on fixing mutex spinning on owner Message-ID: <20160316233530.GA8731@kroah.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 422 Lines: 14 On Wed, Mar 16, 2016 at 04:22:17PM -0700, Joel Fernandes wrote: > Hi, > > On a fairly recent kernel and android userspace, I am seeing that with > i915 driver is in a spin loop waiting for mutex owner to release it > (mutex_spin_on_owner). Why not provide a backtrace to the drm and i915 developers so that they can work on this? The mailing lists you sent this to can't do much about this, sorry... thanks, greg k-h