Commit-ID: 29c67764f121a0980eb30d0314821ea631e6cfaf
Gitweb: http://git.kernel.org/tip/29c67764f121a0980eb30d0314821ea631e6cfaf
Author: Michael Wang <wangyun@xxxxxxxxxxxxxxxxxx>
AuthorDate: Mon, 8 Oct 2012 16:59:17 +0800
Committer: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
CommitDate: Thu, 8 Nov 2012 11:55:42 -0800
rcu: split 'rcuboost' to each flavor
This patch add new 'rcuboost' to each flavor's folder, now we could use:
'cat /debugfs/rcu/rsp/rcuboost'
to get the selected rsp info.
Signed-off-by: Michael Wang <wangyun@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
---
kernel/rcutree_trace.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/kernel/rcutree_trace.c b/kernel/rcutree_trace.c
index 65b6265..cae417d 100644
--- a/kernel/rcutree_trace.c
+++ b/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,
--
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