linux-kernel - [PATCH rcu] use new nesting value for rcu_dyntick trace in rcu_eqs_enter

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Message-ID: <1353995907.14050.60.camel@ThinkPad-T5421.cn.ibm.com>
Date:	Tue, 27 Nov 2012 13:58:27 +0800
From:	Li Zhong <zhong@...ux.vnet.ibm.com>
To:	linux-next list <linux-next@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>
Cc:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	dipankar@...ibm.com
Subject: [PATCH rcu] use new nesting value for rcu_dyntick trace in
 rcu_eqs_enter_common

This patch uses the real new value of dynticks_nesting instead of 0 in
rcu_eqs_enter_common(). 

Signed-off-by: Li Zhong <zhong@...ux.vnet.ibm.com>
---
 kernel/rcutree.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/rcutree.c b/kernel/rcutree.c
index 7733eb5..6b7e314 100644
--- a/kernel/rcutree.c
+++ b/kernel/rcutree.c
@@ -339,7 +339,7 @@ static struct rcu_node *rcu_get_root(struct rcu_state *rsp)
 static void rcu_eqs_enter_common(struct rcu_dynticks *rdtp, long long oldval,
 				bool user)
 {
-	trace_rcu_dyntick("Start", oldval, 0);
+	trace_rcu_dyntick("Start", oldval, rdtp->dynticks_nesting);
 	if (!user && !is_idle_task(current)) {
 		struct task_struct *idle = idle_task(smp_processor_id());
 
-- 
1.7.11.4

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