diff mbox

[tip/core/rcu,12/14] rcu: split 'rcuhier' to each flavor

Message ID 1351616713-26930-12-git-send-email-paulmck@linux.vnet.ibm.com
State Accepted
Commit a608d84bdb832a86ad3fdb0767df31fcda9fe280
Headers show

Commit Message

Paul E. McKenney Oct. 30, 2012, 5:05 p.m. UTC 
From: Michael Wang <wangyun@linux.vnet.ibm.com>

This patch add new 'rcuhier' to each flavor's folder, now we could use:
	'cat /debugfs/rcu/rsp/rcuhier'
to get the selected rsp info.

Signed-off-by: Michael Wang <wangyun@linux.vnet.ibm.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
---
 kernel/rcutree_trace.c |   24 ++++++++++++++++++++++++
 1 files changed, 24 insertions(+), 0 deletions(-)
diff mbox

Patch

diff --git a/kernel/rcutree_trace.c b/kernel/rcutree_trace.c
index bbfb6e2..db46464 100644
--- a/kernel/rcutree_trace.c
+++ b/kernel/rcutree_trace.c
@@ -313,6 +313,26 @@  static const struct file_operations rcuhier_fops = {
 	.release = single_release,
 };
 
+static int new_show_rcuhier(struct seq_file *m, void *v)
+{
+	struct rcu_state *rsp = (struct rcu_state *)m->private;
+	print_one_rcu_state(m, rsp);
+	return 0;
+}
+
+static int new_rcuhier_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, new_show_rcuhier, inode->i_private);
+}
+
+static const struct file_operations new_rcuhier_fops = {
+	.owner = THIS_MODULE,
+	.open = new_rcuhier_open,
+	.read = seq_read,
+	.llseek = no_llseek,
+	.release = seq_release,
+};
+
 static void show_one_rcugp(struct seq_file *m, struct rcu_state *rsp)
 {
 	unsigned long flags;
@@ -491,6 +511,10 @@  static int __init rcutree_trace_init(void)
 			if (!retval)
 				goto free_out;
 
+			retval = debugfs_create_file("rcuhier", 0444,
+					rspdir, rsp, &new_rcuhier_fops);
+			if (!retval)
+				goto free_out;
 	}
 
 	retval = debugfs_create_file("rcubarrier", 0444, rcudir,