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afs: Add directory reload tracepoint 

Add a tracepoint (afs_reload_dir) to indicate when a directory is being
reloaded.

Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells 2019-04-25 14:26:51 +01:00
parent cdfb26b40d
commit 99987c5600
2 changed files with 18 additions and 0 deletions
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1
fs/afs/dir.c
View File

@ -309,6 +309,7 @@ static struct afs_read *afs_read_dir(struct afs_vnode *dvnode, struct key *key)
goto error;
if (!test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags)) {
trace_afs_reload_dir(dvnode);
ret = afs_fetch_data(dvnode, key, req);
if (ret < 0)
goto error_unlock;

17
include/trace/events/afs.h
View File

@ -947,6 +947,23 @@ TRACE_EVENT(afs_flock_op,
__entry->from, __entry->len, __entry->flags)
);
TRACE_EVENT(afs_reload_dir,
TP_PROTO(struct afs_vnode *vnode),
TP_ARGS(vnode),
TP_STRUCT__entry(
__field_struct(struct afs_fid, fid )
),
TP_fast_assign(
__entry->fid = vnode->fid;
),
TP_printk("%llx:%llx:%x",
__entry->fid.vid, __entry->fid.vnode, __entry->fid.unique)
);
#endif /* _TRACE_AFS_H */
/* This part must be outside protection */