From ca1b1eb28e914ddb09e9136132d0ae89dbbd2a1c Mon Sep 17 00:00:00 2001
From: Michael Wang <wangyun@linux.vnet.ibm.com>
Date: Mon, 8 Oct 2012 16:59:17 +0800
Subject: [PATCH] --- yaml --- r: 338829 b: refs/heads/master c:
 29c67764f121a0980eb30d0314821ea631e6cfaf h: refs/heads/master i:   338827:
 e6aa05b26db8849e7057c0b80e1720ed6a419e0a v: v3

---
 [refs]                       |  2 +-
 trunk/kernel/rcutree_trace.c | 11 ++++++++++-
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/[refs] b/[refs]
index 4569ce7b8a62..e3d2e68cb175 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: c25e557f5d49a7cb94fad473f5ced75b6c7ce094
+refs/heads/master: 29c67764f121a0980eb30d0314821ea631e6cfaf
diff --git a/trunk/kernel/rcutree_trace.c b/trunk/kernel/rcutree_trace.c
index 65b6265531ff..cae417de4b94 100644
--- a/trunk/kernel/rcutree_trace.c
+++ b/trunk/kernel/rcutree_trace.c
@@ -241,7 +241,7 @@ static const struct file_operations rcu_node_boost_fops = {
 	.owner = THIS_MODULE,
 	.open = rcu_node_boost_open,
 	.read = seq_read,
-	.llseek = seq_lseek,
+	.llseek = no_llseek,
 	.release = single_release,
 };
 
@@ -459,6 +459,15 @@ static int __init rcutree_trace_init(void)
 					rspdir, rsp, &new_rcubarrier_fops);
 			if (!retval)
 				goto free_out;
+
+#ifdef CONFIG_RCU_BOOST
+			if (rsp == &rcu_preempt_state) {
+				retval = debugfs_create_file("rcuboost", 0444,
+					rspdir, NULL, &rcu_node_boost_fops);
+				if (!retval)
+					goto free_out;
+			}
+#endif
 	}
 
 	retval = debugfs_create_file("rcubarrier", 0444, rcudir,