locks: change tracepoint for generic_add_lease

Add some more helpful info to make it easier to determine why a lease
wasn't granted.

Signed-off-by: Jeff Layton <jeff.layton@primarydata.com>

1 files changed, 35 insertions, 3 deletions

diff --git a/include/trace/events/filelock.h b/include/trace/events/filelock.h
index a0d008070962..c72f2dc01d0b 100644
--- a/include/trace/events/filelock.h
+++ b/include/trace/events/filelock.h
@@ -81,15 +81,47 @@ DEFINE_EVENT(filelock_lease, break_lease_block, TP_PROTO(struct inode *inode, st
 DEFINE_EVENT(filelock_lease, break_lease_unblock, TP_PROTO(struct inode *inode, struct file_lock *fl),
                 TP_ARGS(inode, fl));
 
-DEFINE_EVENT(filelock_lease, generic_add_lease, TP_PROTO(struct inode *inode, struct file_lock *fl),
-                TP_ARGS(inode, fl));
-
 DEFINE_EVENT(filelock_lease, generic_delete_lease, TP_PROTO(struct inode *inode, struct file_lock *fl),
                 TP_ARGS(inode, fl));
 
 DEFINE_EVENT(filelock_lease, time_out_leases, TP_PROTO(struct inode *inode, struct file_lock *fl),
                 TP_ARGS(inode, fl));
 
+TRACE_EVENT(generic_add_lease,
+        TP_PROTO(struct inode *inode, struct file_lock *fl),
+
+        TP_ARGS(inode, fl),
+
+        TP_STRUCT__entry(
+                __field(unsigned long, i_ino)
+                __field(int, wcount)
+                __field(int, dcount)
+                __field(int, icount)
+                __field(dev_t, s_dev)
+                __field(fl_owner_t, fl_owner)
+                __field(unsigned int, fl_flags)
+                __field(unsigned char, fl_type)
+        ),
+
+        TP_fast_assign(
+                __entry->s_dev = inode->i_sb->s_dev;
+                __entry->i_ino = inode->i_ino;
+                __entry->wcount = atomic_read(&inode->i_writecount);
+                __entry->dcount = d_count(fl->fl_file->f_path.dentry);
+                __entry->icount = atomic_read(&inode->i_count);
+                __entry->fl_owner = fl ? fl->fl_owner : NULL;
+                __entry->fl_flags = fl ? fl->fl_flags : 0;
+                __entry->fl_type = fl ? fl->fl_type : 0;
+        ),
+
+        TP_printk("dev=0x%x:0x%x ino=0x%lx wcount=%d dcount=%d icount=%d fl_owner=0x%p fl_flags=%s fl_type=%s",
+                MAJOR(__entry->s_dev), MINOR(__entry->s_dev),
+                __entry->i_ino, __entry->wcount, __entry->dcount,
+                __entry->icount, __entry->fl_owner,
+                show_fl_flags(__entry->fl_flags),
+                show_fl_type(__entry->fl_type))
+);
+
 #endif /* _TRACE_FILELOCK_H */
 
 /* This part must be outside protection */