From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755071Ab1KUQEn (ORCPT ); Mon, 21 Nov 2011 11:04:43 -0500 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.125]:38870 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751477Ab1KUQEm (ORCPT ); Mon, 21 Nov 2011 11:04:42 -0500 X-Authority-Analysis: v=2.0 cv=KcRQQHkD c=1 sm=0 a=ZycB6UtQUfgMyuk2+PxD7w==:17 a=bzeNwhvjNfUA:10 a=5SG0PmZfjMsA:10 a=IkcTkHD0fZMA:10 a=20KFwNOVAAAA:8 a=EJac59WnUnfD6CuNgT0A:9 a=dGQJBqTFlRx27lGQapMA:7 a=QEXdDO2ut3YA:10 a=Zh68SRI7RUMA:10 a=jEp0ucaQiEUA:10 a=ZycB6UtQUfgMyuk2+PxD7w==:117 X-Cloudmark-Score: 0 X-Originating-IP: 74.67.80.29 Subject: Re: [PATCH 1/3] rcu-more-fallout.patch From: Steven Rostedt To: John Kacur Cc: lkml , rt-users , Thomas Gleixner In-Reply-To: <1321707028-12487-2-git-send-email-jkacur@redhat.com> References: <1321707028-12487-1-git-send-email-jkacur@redhat.com> <1321707028-12487-2-git-send-email-jkacur@redhat.com> Content-Type: text/plain; charset="UTF-8" Date: Mon, 21 Nov 2011 11:04:39 -0500 Message-ID: <1321891479.20742.8.camel@frodo> Mime-Version: 1.0 X-Mailer: Evolution 2.32.3 (2.32.3-1.fc14) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, 2011-11-19 at 13:50 +0100, John Kacur wrote: > From: Thomas Gleixner > > Signed-off-by: Thomas Gleixner > Cherry-picked for v3.0-rt and fixed minor merge conflict > Signed-off-by: John Kacur > --- > kernel/rcutiny.c | 2 ++ Is this really needed? >>From init/Kconfig: config TINY_RCU bool "UP-only small-memory-footprint RCU" depends on !SMP && !PREEMPT_RT_FULL This code isn't even compiled when PREEMPT_RT_FULL is set. -- Steve > 1 files changed, 2 insertions(+), 0 deletions(-) > > diff --git a/kernel/rcutiny.c b/kernel/rcutiny.c > index 7bbac7d..f1e4bee 100644 > --- a/kernel/rcutiny.c > +++ b/kernel/rcutiny.c > @@ -271,6 +271,7 @@ void call_rcu_sched(struct rcu_head *head, void (*func)(struct rcu_head *rcu)) > } > EXPORT_SYMBOL_GPL(call_rcu_sched); > > +#ifndef CONFIG_PREEMPT_RT_FULL > /* > * Post an RCU bottom-half callback to be invoked after any subsequent > * quiescent state. > @@ -280,6 +281,7 @@ void call_rcu_bh(struct rcu_head *head, void (*func)(struct rcu_head *rcu)) > __call_rcu(head, func, &rcu_bh_ctrlblk); > } > EXPORT_SYMBOL_GPL(call_rcu_bh); > +#endif > > void rcu_barrier_bh(void) > {