From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756692Ab2EGNjc (ORCPT ); Mon, 7 May 2012 09:39:32 -0400 Received: from e35.co.us.ibm.com ([32.97.110.153]:42496 "EHLO e35.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756236Ab2EGNj2 (ORCPT ); Mon, 7 May 2012 09:39:28 -0400 Date: Mon, 7 May 2012 06:38:36 -0700 From: "Paul E. McKenney" To: Thomas Gleixner Cc: LKML Subject: Re: [patch 03/18] fork: Move thread info gfp flags to header Message-ID: <20120507133836.GA16166@linux.vnet.ibm.com> Reply-To: paulmck@linux.vnet.ibm.com References: <20120505150007.543515803@linutronix.de> <20120505150141.428211694@linutronix.de> <20120507043401.GA5406@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20120507043401.GA5406@linux.vnet.ibm.com> User-Agent: Mutt/1.5.21 (2010-09-15) X-Content-Scanned: Fidelis XPS MAILER x-cbid: 12050713-6148-0000-0000-000005A0A32C Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, May 06, 2012 at 09:34:01PM -0700, Paul E. McKenney wrote: > On Sat, May 05, 2012 at 03:05:41PM -0000, Thomas Gleixner wrote: > > These flags can be useful for extra allocations outside of the core > > code. > > > > Add __GFP_NOTRACE to them, so the archs which have kmemcheck do > > not have to provide extra allocators just for that reason. > > This breaks powerpc builds due to __GFP_NOTRACE not being defined. > I restarted the test after removing the __GFP_NOTRACE as a testing-only > hack, and will let you know how it goes. Also looking into why this > builds on 32-bit x86 but not on powerpc. And the reason that it built on 32-bit x86 was that I mistakenly built only the RCU files, not the whole kernel. So I am guessing that there is something I need to merge into tip/smp/hotplug. On the other hand, removing the __GFP_NOTRACE allows this patchset to pass modest rcutorture testing on Power. ;-) Thanx, Paul