From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753487Ab3AGRjg (ORCPT ); Mon, 7 Jan 2013 12:39:36 -0500 Received: from e32.co.us.ibm.com ([32.97.110.150]:47161 "EHLO e32.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751214Ab3AGRjf (ORCPT ); Mon, 7 Jan 2013 12:39:35 -0500 Date: Mon, 7 Jan 2013 09:39:06 -0800 From: "Paul E. McKenney" To: Li Zhong Cc: Frederic Weisbecker , LKML , Andrew Morton , "H. Peter Anvin" , Ingo Molnar , Peter Zijlstra , Steven Rostedt , Thomas Gleixner , Gilad.Ben-Yossef.gilad@benyossef.com Subject: Re: [PATCH rcu] Remove unused code originally used for context tracking Message-ID: <20130107173906.GL2525@linux.vnet.ibm.com> Reply-To: paulmck@linux.vnet.ibm.com References: <1354041205-6989-1-git-send-email-fweisbec@gmail.com> <1354179992.2499.35.camel@ThinkPad-T5421.cn.ibm.com> <20121129113627.GS2474@linux.vnet.ibm.com> <1354256362.2552.6.camel@ThinkPad-T5421.cn.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1354256362.2552.6.camel@ThinkPad-T5421.cn.ibm.com> User-Agent: Mutt/1.5.21 (2010-09-15) X-Content-Scanned: Fidelis XPS MAILER x-cbid: 13010717-5406-0000-0000-000003F64888 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Nov 30, 2012 at 02:19:22PM +0800, Li Zhong wrote: > As new context tracking subsystem added, it seems ignore_user_qs and > in_user defined in struct rcu_dynticks are no longer needed, so remove > them. > > Signed-off-by: Li Zhong Hearing no objections from Frederic, I have queued this patch for 3.9 Thanx, Paul > --- > kernel/rcutree.c | 3 --- > kernel/rcutree.h | 4 ---- > 2 files changed, 7 deletions(-) > > diff --git a/kernel/rcutree.c b/kernel/rcutree.c > index e441b77..b8fae5d 100644 > --- a/kernel/rcutree.c > +++ b/kernel/rcutree.c > @@ -2719,9 +2719,6 @@ rcu_boot_init_percpu_data(int cpu, struct rcu_state *rsp) > rdp->dynticks = &per_cpu(rcu_dynticks, cpu); > WARN_ON_ONCE(rdp->dynticks->dynticks_nesting != DYNTICK_TASK_EXIT_IDLE); > WARN_ON_ONCE(atomic_read(&rdp->dynticks->dynticks) != 1); > -#ifdef CONFIG_RCU_USER_QS > - WARN_ON_ONCE(rdp->dynticks->in_user); > -#endif > rdp->cpu = cpu; > rdp->rsp = rsp; > rcu_boot_init_nocb_percpu_data(rdp); > diff --git a/kernel/rcutree.h b/kernel/rcutree.h > index 4b69291..6f21f2e 100644 > --- a/kernel/rcutree.h > +++ b/kernel/rcutree.h > @@ -102,10 +102,6 @@ struct rcu_dynticks { > /* idle-period nonlazy_posted snapshot. */ > int tick_nohz_enabled_snap; /* Previously seen value from sysfs. */ > #endif /* #ifdef CONFIG_RCU_FAST_NO_HZ */ > -#ifdef CONFIG_RCU_USER_QS > - bool ignore_user_qs; /* Treat userspace as extended QS or not */ > - bool in_user; /* Is the CPU in userland from RCU POV? */ > -#endif > }; > > /* RCU's kthread states for tracing. */ > -- > 1.7.11.4 > >