commit cc668ab30b8a5505c1651b073882c1a67c802a48
author Trond Myklebust <Trond.Myklebust@netapp.com> Wed Aug 14 15:31:28 2013 -0400
committer Trond Myklebust <Trond.Myklebust@netapp.com> Thu Aug 22 08:58:26 2013 -0400
tree 32caf9dab1ba04fcd6ac5ed36215bf7b845c3212
parent b5f875a92591d06c57e786b3c916e21e290ad844

NFSv4: Add tracepoints for debugging reads and writes

Set up tracepoints to track read, write and commit, as well as
pNFS reads and writes and commits to the data server.

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

fs/nfs/pnfs.c

diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index 3a3a79d..d75d938 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -33,6 +33,7 @@
 #include "internal.h"
 #include "pnfs.h"
 #include "iostat.h"
+#include "nfs4trace.h"
 
 #define NFSDBG_FACILITY		NFSDBG_PNFS
 #define PNFS_LAYOUTGET_RETRY_TIMEOUT (120*HZ)
@@ -1526,6 +1527,7 @@
 {
 	struct nfs_pgio_header *hdr = data->header;
 
+	trace_nfs4_pnfs_write(data, hdr->pnfs_error);
 	if (!hdr->pnfs_error) {
 		pnfs_set_layoutcommit(data);
 		hdr->mds_ops->rpc_call_done(&data->task, data);
@@ -1680,6 +1682,7 @@
 {
 	struct nfs_pgio_header *hdr = data->header;
 
+	trace_nfs4_pnfs_read(data, hdr->pnfs_error);
 	if (likely(!hdr->pnfs_error)) {
 		__nfs4_read_done_cb(data);
 		hdr->mds_ops->rpc_call_done(&data->task, data);