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Adding tracepoint to cached open

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Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Olga Kornievskaia 2015-11-24 13:29:42 -05:00 committed by Trond Myklebust
parent 48c9579a1a
commit 9759b0fb1d
2 changed files with 41 additions and 0 deletions
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2
fs/nfs/nfs4proc.c
View File

@ -1598,6 +1598,7 @@ _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data)
if (!data->rpc_done) {
state = nfs4_try_open_cached(data);
trace_nfs4_cached_open(data->state);
goto out;
}
@ -2015,6 +2016,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
}
return;
unlock_no_action:
trace_nfs4_cached_open(data->state);
rcu_read_unlock();
out_no_action:
task->tk_action = NULL;

39
fs/nfs/nfs4trace.h
View File

@ -473,6 +473,45 @@ DEFINE_NFS4_OPEN_EVENT(nfs4_open_reclaim);
DEFINE_NFS4_OPEN_EVENT(nfs4_open_expired);
DEFINE_NFS4_OPEN_EVENT(nfs4_open_file);
TRACE_EVENT(nfs4_cached_open,
TP_PROTO(
const struct nfs4_state *state
),
TP_ARGS(state),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(u32, fhandle)
__field(u64, fileid)
__field(unsigned int, fmode)
__field(int, stateid_seq)
__field(u32, stateid_hash)
),
TP_fast_assign(
const struct inode *inode = state->inode;
__entry->dev = inode->i_sb->s_dev;
__entry->fileid = NFS_FILEID(inode);
__entry->fhandle = nfs_fhandle_hash(NFS_FH(inode));
__entry->fmode = (__force unsigned int)state->state;
__entry->stateid_seq =
be32_to_cpu(state->stateid.seqid);
__entry->stateid_hash =
nfs_stateid_hash(&state->stateid);
),
TP_printk(
"fmode=%s fileid=%02x:%02x:%llu "
"fhandle=0x%08x stateid=%d:0x%08x",
__entry->fmode ? show_fmode_flags(__entry->fmode) :
"closed",
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->fileid,
__entry->fhandle,
__entry->stateid_seq, __entry->stateid_hash
)
);
TRACE_EVENT(nfs4_close,
TP_PROTO(
const struct nfs4_state *state,