From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Paul E. McKenney" Subject: [PATCH -rt] apply rcu_process_callbacks() changes from mainline Date: Fri, 1 Aug 2008 14:11:46 -0700 Message-ID: <20080801211146.GG14851@linux.vnet.ibm.com> Reply-To: paulmck@linux.vnet.ibm.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: rostedt@goodmis.org, tglx@linutronix.de, linux-kernel@vger.kernel.org, mingo@elte.hu To: linux-rt-users@vger.kernel.org Return-path: Received: from e34.co.us.ibm.com ([32.97.110.152]:53016 "EHLO e34.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761248AbYHAVLs (ORCPT ); Fri, 1 Aug 2008 17:11:48 -0400 Content-Disposition: inline Sender: linux-rt-users-owner@vger.kernel.org List-ID: On its way to mainline, rcu_process_callbacks() became a static function and the unused function rcu_advance_callbacks() was removed. The attached patch adjusts -rt to better match mainline. Signed-off-by: Paul E. McKenney --- include/linux/rcuclassic.h | 3 --- include/linux/rcupreempt.h | 2 -- kernel/rcuclassic.c | 13 +------------ kernel/rcupreempt.c | 2 +- 4 files changed, 2 insertions(+), 18 deletions(-) diff -urpNa -X dontdiff linux-2.6.26-rt1/include/linux/rcuclassic.h linux-2.6.26-rt1-rhf/include/linux/rcuclassic.h --- linux-2.6.26-rt1/include/linux/rcuclassic.h 2008-07-30 05:42:42.000000000 -0700 +++ linux-2.6.26-rt1-rhf/include/linux/rcuclassic.h 2008-07-30 10:30:31.000000000 -0700 @@ -162,7 +162,4 @@ extern long rcu_batches_completed_bh(voi #define rcu_exit_nohz() do { } while (0) #define rcu_preempt_boost_init() do { } while (0) -struct softirq_action; -extern void rcu_process_callbacks(struct softirq_action *unused); - #endif /* __LINUX_RCUCLASSIC_H */ diff -urpNa -X dontdiff linux-2.6.26-rt1/include/linux/rcupreempt.h linux-2.6.26-rt1-rhf/include/linux/rcupreempt.h --- linux-2.6.26-rt1/include/linux/rcupreempt.h 2008-07-30 05:42:41.000000000 -0700 +++ linux-2.6.26-rt1-rhf/include/linux/rcupreempt.h 2008-07-30 10:31:44.000000000 -0700 @@ -146,6 +146,4 @@ static inline void rcu_exit_nohz(void) #define rcu_exit_nohz() do { } while (0) #endif /* CONFIG_NO_HZ */ -extern void rcu_process_callbacks(struct softirq_action *unused); - #endif /* __LINUX_RCUPREEMPT_H */ diff -urpNa -X dontdiff linux-2.6.26-rt1/kernel/rcuclassic.c linux-2.6.26-rt1-rhf/kernel/rcuclassic.c --- linux-2.6.26-rt1/kernel/rcuclassic.c 2008-07-30 05:42:42.000000000 -0700 +++ linux-2.6.26-rt1-rhf/kernel/rcuclassic.c 2008-07-30 10:54:35.000000000 -0700 @@ -458,7 +458,7 @@ static void __rcu_process_callbacks(stru rcu_do_batch(rdp); } -void rcu_process_callbacks(struct softirq_action *unused) +static void rcu_process_callbacks(struct softirq_action *unused) { __rcu_process_callbacks(&rcu_ctrlblk, &__get_cpu_var(rcu_data)); __rcu_process_callbacks(&rcu_bh_ctrlblk, &__get_cpu_var(rcu_bh_data)); @@ -513,17 +513,6 @@ int rcu_needs_cpu(int cpu) return (!!rdp->curlist || !!rdp_bh->curlist || rcu_pending(cpu)); } -void rcu_advance_callbacks(int cpu, int user) -{ - if (user || - (idle_cpu(cpu) && !in_softirq() && - hardirq_count() <= (1 << HARDIRQ_SHIFT))) { - rcu_qsctr_inc(cpu); - rcu_bh_qsctr_inc(cpu); - } else if (!in_softirq()) - rcu_bh_qsctr_inc(cpu); -}