From: Lai Jiangshan <laijs@cn.fujitsu.com>
To: Andrew Morton <akpm@linux-foundation.org>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: [PATCH]rcu classic: update qlen when cpu offline
Date: Thu, 26 Jun 2008 10:06:43 +0800 [thread overview]
Message-ID: <4862F9B3.5030300@cn.fujitsu.com> (raw)
When callbacks are moved from offline cpu to this cpu,
the qlen field of this rdp should be updated.
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
---
diff --git a/kernel/rcuclassic.c b/kernel/rcuclassic.c
index f4ffbd0..42aead6 100644
--- a/kernel/rcuclassic.c
+++ b/kernel/rcuclassic.c
@@ -373,6 +373,10 @@ static void __rcu_offline_cpu(struct rcu_data *this_rdp,
rcu_move_batch(this_rdp, rdp->donelist, rdp->donetail);
rcu_move_batch(this_rdp, rdp->curlist, rdp->curtail);
rcu_move_batch(this_rdp, rdp->nxtlist, rdp->nxttail);
+
+ local_irq_disable();
+ this_rdp->qlen += rdp->qlen;
+ local_irq_enable();
}
static void rcu_offline_cpu(int cpu)
next reply other threads:[~2008-06-26 2:47 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-26 2:06 Lai Jiangshan [this message]
2008-06-26 14:13 ` [PATCH]rcu classic: update qlen when cpu offline Paul E. McKenney
2008-07-13 21:13 ` Ingo Molnar
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