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NFSv4: Add tracepoints for debugging file locking

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Set up basic tracepoints for debugging NFSv4 file lock/unlock

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust
2013-08-12 16:35:20 -04:00
parent 42113a7539
commit d1b748a5e7
2 changed files with 82 additions and 2 deletions
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75
fs/nfs/nfs4trace.h
View File

@@ -336,6 +336,81 @@ TRACE_EVENT(nfs4_close,
)
);
#define show_lock_cmd(type) \
__print_symbolic((int)type, \
{ F_GETLK, "GETLK" }, \
{ F_SETLK, "SETLK" }, \
{ F_SETLKW, "SETLKW" })
#define show_lock_type(type) \
__print_symbolic((int)type, \
{ F_RDLCK, "RDLCK" }, \
{ F_WRLCK, "WRLCK" }, \
{ F_UNLCK, "UNLCK" })
DECLARE_EVENT_CLASS(nfs4_lock_event,
TP_PROTO(
const struct file_lock *request,
const struct nfs4_state *state,
int cmd,
int error
),
TP_ARGS(request, state, cmd, error),
TP_STRUCT__entry(
__field(int, error)
__field(int, cmd)
__field(char, type)
__field(loff_t, start)
__field(loff_t, end)
__field(dev_t, dev)
__field(u32, fhandle)
__field(u64, fileid)
),
TP_fast_assign(
const struct inode *inode = state->inode;
__entry->error = error;
__entry->cmd = cmd;
__entry->type = request->fl_type;
__entry->start = request->fl_start;
__entry->end = request->fl_end;
__entry->dev = inode->i_sb->s_dev;
__entry->fileid = NFS_FILEID(inode);
__entry->fhandle = nfs_fhandle_hash(NFS_FH(inode));
),
TP_printk(
"error=%d (%s) cmd=%s:%s range=%lld:%lld "
"fileid=%02x:%02x:%llu fhandle=0x%08x",
__entry->error,
show_nfsv4_errors(__entry->error),
show_lock_cmd(__entry->cmd),
show_lock_type(__entry->type),
(long long)__entry->start,
(long long)__entry->end,
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->fileid,
__entry->fhandle
)
);
#define DEFINE_NFS4_LOCK_EVENT(name) \
DEFINE_EVENT(nfs4_lock_event, name, \
TP_PROTO( \
const struct file_lock *request, \
const struct nfs4_state *state, \
int cmd, \
int error \
), \
TP_ARGS(request, state, cmd, error))
DEFINE_NFS4_LOCK_EVENT(nfs4_get_lock);
DEFINE_NFS4_LOCK_EVENT(nfs4_set_lock);
DEFINE_NFS4_LOCK_EVENT(nfs4_lock_reclaim);
DEFINE_NFS4_LOCK_EVENT(nfs4_lock_expired);
DEFINE_NFS4_LOCK_EVENT(nfs4_unlock);
#endif /* _TRACE_NFS4_H */
#undef TRACE_INCLUDE_PATH