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[PATCH-v4,4/7] vfs: add lazytime tracepoints for better debugging

Message ID 1416997437-26092-5-git-send-email-tytso@mit.edu (mailing list archive)
State Not Applicable
Headers show

Commit Message

Theodore Ts'o Nov. 26, 2014, 10:23 a.m. UTC 
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
---
 fs/fs-writeback.c | 1 +
 fs/inode.c        | 5 +++++
 2 files changed, 6 insertions(+)
diff mbox

Patch

diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 529480a..3d87174 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -27,6 +27,7 @@ 
 #include <linux/backing-dev.h>
 #include <linux/tracepoint.h>
 #include <linux/device.h>
+#include <trace/events/fs.h>
 #include "internal.h"
 
 /*
diff --git a/fs/inode.c b/fs/inode.c
index 37c0429..b2fea60 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -20,6 +20,9 @@ 
 #include <linux/list_lru.h>
 #include "internal.h"
 
+#define CREATE_TRACE_POINTS
+#include <trace/events/fs.h>
+
 /*
  * Inode locking rules:
  *
@@ -1443,6 +1446,7 @@  retry:
 				inode->i_op->write_time(inode);
 			else if (inode->i_sb->s_op->write_inode)
 				mark_inode_dirty_sync(inode);
+			trace_fs_lazytime_iput(inode);
 			goto retry;
 		}
 		iput_final(inode);
@@ -1561,6 +1565,7 @@  static int update_time(struct inode *inode, struct timespec *time, int flags)
 		inode->i_ts_dirty_day = days_since_boot;
 		spin_unlock(&inode->i_lock);
 		inode_requeue_dirtytime(inode);
+		trace_fs_lazytime_defer(inode);
 		return 0;
 	}
 force_dirty: