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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2013-08-21 13:54:44 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2013-08-22 08:58:20 -0400 |
| commit | 1fd1085b49f8cafbd0ce4e4682c209a31f7b287f (patch) | |
| tree | 82bc8631aedfc1e5d633c4357c7a378e93f11505 | |
| parent | 70ded2017072ae16aeaa7fb2a15a879a475161a6 (diff) | |
| download | lwn-1fd1085b49f8cafbd0ce4e4682c209a31f7b287f.tar.gz lwn-1fd1085b49f8cafbd0ce4e4682c209a31f7b287f.zip | |
NFS: Add tracepoints for debugging NFS hard links
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| -rw-r--r-- | fs/nfs/dir.c | 2 | ||||
| -rw-r--r-- | fs/nfs/nfstrace.h | 70 |
2 files changed, 72 insertions, 0 deletions
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index dca7deb1609b..4ce7f7696e11 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -1860,6 +1860,7 @@ nfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry) old_dentry->d_parent->d_name.name, old_dentry->d_name.name, dentry->d_parent->d_name.name, dentry->d_name.name); + trace_nfs_link_enter(inode, dir, dentry); NFS_PROTO(inode)->return_delegation(inode); d_drop(dentry); @@ -1868,6 +1869,7 @@ nfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry) ihold(inode); d_add(dentry, inode); } + trace_nfs_link_exit(inode, dir, dentry, error); return error; } EXPORT_SYMBOL_GPL(nfs_link); diff --git a/fs/nfs/nfstrace.h b/fs/nfs/nfstrace.h index a20f0d147cf2..89fe741e58b1 100644 --- a/fs/nfs/nfstrace.h +++ b/fs/nfs/nfstrace.h @@ -512,6 +512,76 @@ DEFINE_NFS_DIRECTORY_EVENT_DONE(nfs_unlink_exit); DEFINE_NFS_DIRECTORY_EVENT(nfs_symlink_enter); DEFINE_NFS_DIRECTORY_EVENT_DONE(nfs_symlink_exit); +TRACE_EVENT(nfs_link_enter, + TP_PROTO( + const struct inode *inode, + const struct inode *dir, + const struct dentry *dentry + ), + + TP_ARGS(inode, dir, dentry), + + TP_STRUCT__entry( + __field(dev_t, dev) + __field(u64, fileid) + __field(u64, dir) + __string(name, dentry->d_name.name) + ), + + TP_fast_assign( + __entry->dev = inode->i_sb->s_dev; + __entry->fileid = NFS_FILEID(inode); + __entry->dir = NFS_FILEID(dir); + __assign_str(name, dentry->d_name.name); + ), + + TP_printk( + "fileid=%02x:%02x:%llu name=%02x:%02x:%llu/%s", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->fileid, + MAJOR(__entry->dev), MINOR(__entry->dev), + (unsigned long long)__entry->dir, + __get_str(name) + ) +); + +TRACE_EVENT(nfs_link_exit, + TP_PROTO( + const struct inode *inode, + const struct inode *dir, + const struct dentry *dentry, + int error + ), + + TP_ARGS(inode, dir, dentry, error), + + TP_STRUCT__entry( + __field(int, error) + __field(dev_t, dev) + __field(u64, fileid) + __field(u64, dir) + __string(name, dentry->d_name.name) + ), + + TP_fast_assign( + __entry->dev = inode->i_sb->s_dev; + __entry->fileid = NFS_FILEID(inode); + __entry->dir = NFS_FILEID(dir); + __entry->error = error; + __assign_str(name, dentry->d_name.name); + ), + + TP_printk( + "error=%d fileid=%02x:%02x:%llu name=%02x:%02x:%llu/%s", + __entry->error, + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->fileid, + MAJOR(__entry->dev), MINOR(__entry->dev), + (unsigned long long)__entry->dir, + __get_str(name) + ) +); + DECLARE_EVENT_CLASS(nfs_rename_event, TP_PROTO( const struct inode *old_dir, |