Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753646AbcCHDL1 (ORCPT ); Mon, 7 Mar 2016 22:11:27 -0500 Received: from mga01.intel.com ([192.55.52.88]:32311 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753435AbcCHDLU (ORCPT ); Mon, 7 Mar 2016 22:11:20 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.22,554,1449561600"; d="scan'208";a="928993225" Date: Mon, 7 Mar 2016 19:11:19 -0800 From: Andi Kleen To: Simon Kirby Cc: linux-kernel@vger.kernel.org Subject: Re: Hung task detector versus NFS (TASK_KILLABLE) Message-ID: <20160308031119.GM23621@tassilo.jf.intel.com> References: <20160307235944.GD15986@hostway.ca> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20160307235944.GD15986@hostway.ca> 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: 400 Lines: 11 > I write this because I would actually find it useful to see the original > backtrace, even if it is interruptible, not just the collateral damage. > Since the "skipping" of NFS is basically incomplete anyway, how big a > deal is this "feature"? Random backtrace spewing is always a misfeature for 99.99+% of the users for whom it is gibberish. If you really need it yourself add a kprobe. -Andi