From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756831Ab2EEPJu (ORCPT ); Sat, 5 May 2012 11:09:50 -0400 Received: from www.linutronix.de ([62.245.132.108]:33122 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755931Ab2EEPFm (ORCPT ); Sat, 5 May 2012 11:05:42 -0400 Message-Id: <20120505150141.428211694@linutronix.de> User-Agent: quilt/0.48-1 Date: Sat, 05 May 2012 15:05:41 -0000 From: Thomas Gleixner To: LKML Subject: [patch 03/18] fork: Move thread info gfp flags to header References: <20120505150007.543515803@linutronix.de> Content-Disposition: inline; filename=fork-move-thread-info-gfp-flags-to-header.patch X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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. Signed-off-by: Thomas Gleixner --- include/linux/thread_info.h | 6 ++++++ kernel/fork.c | 8 ++------ 2 files changed, 8 insertions(+), 6 deletions(-) Index: tip/include/linux/thread_info.h =================================================================== --- tip.orig/include/linux/thread_info.h +++ tip/include/linux/thread_info.h @@ -54,6 +54,12 @@ extern long do_no_restart_syscall(struct #ifdef __KERNEL__ +#ifdef CONFIG_DEBUG_STACK_USAGE +# define THREADINFO_GFP (GFP_KERNEL | __GFP_NOTRACE | __GFP_ZERO) +#else +# define THREADINFO_GFP (GFP_KERNEL | __GFP_NOTRACE) +#endif + /* * flag set/clear/test wrappers * - pass TIF_xxxx constants to these functions Index: tip/kernel/fork.c =================================================================== --- tip.orig/kernel/fork.c +++ tip/kernel/fork.c @@ -135,12 +135,8 @@ void __weak arch_release_thread_info(str static struct thread_info *alloc_thread_info_node(struct task_struct *tsk, int node) { -#ifdef CONFIG_DEBUG_STACK_USAGE - gfp_t mask = GFP_KERNEL | __GFP_ZERO; -#else - gfp_t mask = GFP_KERNEL; -#endif - struct page *page = alloc_pages_node(node, mask, THREAD_SIZE_ORDER); + struct page *page = alloc_pages_node(node, THREADINFO_GFP, + THREAD_SIZE_ORDER); return page ? page_address(page) : NULL; }