Adding tracepoint to cached open (9759b0fb) · Commits · 戴 / test

fs/nfs/nfs4proc.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -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 −0

Original line number	Diff line number	Diff line
		@@ -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,