Commit-ID: c25e557f5d49a7cb94fad473f5ced75b6c7ce094
Gitweb: http://git.kernel.org/tip/c25e557f5d49a7cb94fad473f5ced75b6c7ce094
Author: Michael Wang <wangyun@xxxxxxxxxxxxxxxxxx>
AuthorDate: Mon, 8 Oct 2012 16:59:16 +0800
Committer: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
CommitDate: Thu, 8 Nov 2012 11:55:41 -0800
rcu: split 'rcubarrier' to each flavor
This patch add new 'rcubarrier' to each flavor's folder, now we could use:
'cat /debugfs/rcu/rsp/rcubarrier'
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 | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/kernel/rcutree_trace.c b/kernel/rcutree_trace.c
index 3312ed7..65b6265 100644
--- a/kernel/rcutree_trace.c
+++ b/kernel/rcutree_trace.c
@@ -103,6 +103,28 @@ static const struct file_operations rcubarrier_fops = {
.release = single_release,
};
+static int new_show_rcubarrier(struct seq_file *m, void *v)
+{
+ struct rcu_state *rsp = (struct rcu_state *)m->private;
+ seq_printf(m, "bcc: %d nbd: %lu\n",
+ atomic_read(&rsp->barrier_cpu_count),
+ rsp->n_barrier_done);
+ return 0;
+}
+
+static int new_rcubarrier_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, new_show_rcubarrier, inode->i_private);
+}
+
+static const struct file_operations new_rcubarrier_fops = {
+ .owner = THIS_MODULE,
+ .open = new_rcubarrier_open,
+ .read = seq_read,
+ .llseek = no_llseek,
+ .release = seq_release,
+};
+
#ifdef CONFIG_RCU_BOOST
static char convert_kthread_status(unsigned int kthread_status)
@@ -432,6 +454,11 @@ static int __init rcutree_trace_init(void)
rspdir, rsp, &rcu_pending_fops);
if (!retval)
goto free_out;
+
+ retval = debugfs_create_file("rcubarrier", 0444,
+ rspdir, rsp, &new_rcubarrier_fops);
+ if (!retval)
+ goto free_out;
}
retval = debugfs_create_file("rcubarrier", 0444, rcudir,
--
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