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NFSv4: Add tracepoints for debugging the idmapper

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Add tracepoints to help debug uid/gid mappings to username/group.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2013-08-13 11:34:01 -04:00
parent ca8acf8d84
commit 1f2d30b533
2 changed files with 51 additions and 0 deletions
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46
fs/nfs/nfs4trace.h
View file

@ -627,6 +627,52 @@ DEFINE_NFS4_INODE_EVENT(nfs4_set_security_label);
DEFINE_NFS4_INODE_EVENT(nfs4_recall_delegation);
DEFINE_NFS4_INODE_EVENT(nfs4_delegreturn);
DECLARE_EVENT_CLASS(nfs4_idmap_event,
TP_PROTO(
const char *name,
int len,
u32 id,
int error
),
TP_ARGS(name, len, id, error),
TP_STRUCT__entry(
__field(int, error)
__field(u32, id)
__dynamic_array(char, name, len > 0 ? len + 1 : 1)
),
TP_fast_assign(
if (len < 0)
len = 0;
__entry->error = error < 0 ? error : 0;
__entry->id = id;
memcpy(__get_dynamic_array(name), name, len);
((char *)__get_dynamic_array(name))[len] = 0;
),
TP_printk(
"error=%d id=%u name=%s",
__entry->error,
__entry->id,
__get_str(name)
)
);
#define DEFINE_NFS4_IDMAP_EVENT(name) \
DEFINE_EVENT(nfs4_idmap_event, name, \
TP_PROTO( \
const char *name, \
int len, \
u32 id, \
int error \
), \
TP_ARGS(name, len, id, error))
DEFINE_NFS4_IDMAP_EVENT(nfs4_map_name_to_uid);
DEFINE_NFS4_IDMAP_EVENT(nfs4_map_group_to_gid);
DEFINE_NFS4_IDMAP_EVENT(nfs4_map_uid_to_name);
DEFINE_NFS4_IDMAP_EVENT(nfs4_map_gid_to_group);
#endif /* _TRACE_NFS4_H */
#undef TRACE_INCLUDE_PATH