lkml.org 
[lkml]   [2012]   [Oct]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] ntp, add debugfs entries for time_status and time_state
Date
Add debugfs entries for ntp time_status and time_state.  These are useful
for debugging ntp issues.

Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Cc: John Stultz <johnstul@us.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
---
kernel/time/ntp.c | 40 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 40 insertions(+)

diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c
index 24174b4..e1ba393 100644
--- a/kernel/time/ntp.c
+++ b/kernel/time/ntp.c
@@ -15,6 +15,7 @@
#include <linux/time.h>
#include <linux/mm.h>
#include <linux/module.h>
+#include <linux/debugfs.h>

#include "tick-internal.h"

@@ -965,3 +966,42 @@ void __init ntp_init(void)
{
ntp_clear();
}
+
+static int time_status_get(void *data, u64 *val)
+{
+ *val = time_status;
+ return 0;
+}
+DEFINE_SIMPLE_ATTRIBUTE(time_status_fops, time_status_get, NULL, "0x%0llx\n");
+
+static int time_state_get(void *data, u64 *val)
+{
+ *val = time_state;
+ return 0;
+}
+DEFINE_SIMPLE_ATTRIBUTE(time_state_fops, time_state_get, NULL, "0x%llx\n");
+
+static int __init ntp_debugfs_init(void)
+{
+ struct dentry *ntp_dentry, *time_status_dentry, *time_state_dentry;
+
+ ntp_dentry = debugfs_create_dir("ntp", NULL);
+ if (!ntp_dentry)
+ return -ENOMEM;
+
+ time_status_dentry = debugfs_create_file("time_status", 0444,
+ ntp_dentry, NULL,
+ &time_status_fops);
+ if (!time_status_dentry)
+ return -ENOMEM;
+
+ time_state_dentry = debugfs_create_file("time_state", 0444,
+ ntp_dentry, NULL,
+ &time_state_fops);
+ if (!time_state_dentry)
+ return -ENOMEM;
+
+ return 0;
+}
+/* debugfs init is core_initcall */
+postcore_initcall(ntp_debugfs_init);
--
1.7.9.3


\
 
 \ /
  Last update: 2012-10-04 16:21    [W:0.081 / U:0.356 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site