1 files changed, 42 insertions, 0 deletions

diff --git a/kernel/rcutree_trace.c b/kernel/rcutree_trace.c
index a11522f62c71..e387a642632b 100644
--- a/kernel/rcutree_trace.c
+++ b/kernel/rcutree_trace.c
@@ -267,6 +267,43 @@ static const struct file_operations rcudata_csv_fops = {
         .release = single_release,
 };
 
+static int new_show_rcudata_csv(struct seq_file *m, void *v)
+{
+        struct rcu_data *rdp = (struct rcu_data *)v;
+        if (cpumask_first(cpu_possible_mask) == rdp->cpu) {
+                seq_puts(m, "\"CPU\",\"Online?\",\"c\",\"g\",\"pq\",\"pq\",");
+                seq_puts(m, "\"dt\",\"dt nesting\",\"dt NMI nesting\",\"df\",");
+                seq_puts(m, "\"of\",\"qll\",\"ql\",\"qs\"");
+#ifdef CONFIG_RCU_BOOST
+                seq_puts(m, "\"kt\",\"ktl\"");
+#endif /* #ifdef CONFIG_RCU_BOOST */
+                seq_puts(m, ",\"b\",\"ci\",\"co\",\"ca\"\n");
+        }
+
+        print_one_rcu_data_csv(m, rdp);
+        return 0;
+}
+
+static const struct seq_operations new_rcudate_csv_op = {
+        .start = r_start,
+        .next  = r_next,
+        .stop  = r_stop,
+        .show  = new_show_rcudata_csv,
+};
+
+static int new_rcudata_csv_open(struct inode *inode, struct file *file)
+{
+        return r_open(inode, file, &new_rcudate_csv_op);
+}
+
+static const struct file_operations new_rcudata_csv_fops = {
+        .owner = THIS_MODULE,
+        .open = new_rcudata_csv_open,
+        .read = seq_read,
+        .llseek = no_llseek,
+        .release = seq_release,
+};
+
 #ifdef CONFIG_RCU_BOOST
 
 static void print_one_rcu_node_boost(struct seq_file *m, struct rcu_node *rnp)
@@ -519,6 +556,11 @@ static int __init rcutree_trace_init(void)
                                         rspdir, rsp, &new_rcudata_fops);
                         if (!retval)
                                 goto free_out;
+
+                        retval = debugfs_create_file("rcudata.csv", 0444,
+                                        rspdir, rsp, &new_rcudata_csv_fops);
+                        if (!retval)
+                                goto free_out;
         }
 
         retval = debugfs_create_file("rcubarrier", 0444, rcudir,