NFSv4: Add tracepoints for debugging file open

Set up basic tracepoints for debugging NFSv4 file open/close

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 5f228edbb876..d609198724ed 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -1442,6 +1442,7 @@ static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state
         int err;
         do {
                 err = _nfs4_do_open_reclaim(ctx, state);
+                trace_nfs4_open_reclaim(ctx, 0, err);
                 if (nfs4_clear_cap_atomic_open_v1(server, err, &exception))
                         continue;
                 if (err != -NFS4ERR_DELAY)
@@ -1897,6 +1898,7 @@ static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state
 
         do {
                 err = _nfs4_open_expired(ctx, state);
+                trace_nfs4_open_expired(ctx, 0, err);
                 if (nfs4_clear_cap_atomic_open_v1(server, err, &exception))
                         continue;
                 switch (err) {
@@ -2199,6 +2201,7 @@ static struct nfs4_state *nfs4_do_open(struct inode *dir,
         do {
                 status = _nfs4_do_open(dir, ctx, flags, sattr, label);
                 res = ctx->state;
+                trace_nfs4_open_file(ctx, flags, status);
                 if (status == 0)
                         break;
                 /* NOTE: BAD_SEQID means the server and client disagree about the
@@ -2389,6 +2392,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
         dprintk("%s: begin!\n", __func__);
         if (!nfs4_sequence_done(task, &calldata->res.seq_res))
                 return;
+        trace_nfs4_close(state, &calldata->arg, &calldata->res, task->tk_status);
         /* hmm. we are done with the inode, and in the process of freeing
          * the state_owner. we keep this around to process errors
          */