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authorTrond Myklebust <Trond.Myklebust@netapp.com>2013-08-19 18:59:33 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2013-08-22 08:58:17 -0400
commitf4ce1299b329e96bb247c95c4fee8809827d6931 (patch)
treeb4056d4f78b0594f84c8e4b3beda565a05751993 /fs/nfs/file.c
parent1264a2f053a32376696e51184f086d35113e75ff (diff)
downloadlinux-f4ce1299b329e96bb247c95c4fee8809827d6931.tar.bz2
NFS: Add event tracing for generic NFS events
Add tracepoints for inode attribute updates, attribute revalidation, writeback start/end fsync start/end, attribute change start/end, permission check start/end. The intention is to enable performance tracing using 'perf'as well as improving debugging. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/file.c')
-rw-r--r--fs/nfs/file.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index 94e94bd11aae..d6a9db0a8545 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -37,6 +37,8 @@
#include "iostat.h"
#include "fscache.h"
+#include "nfstrace.h"
+
#define NFSDBG_FACILITY NFSDBG_FILE
static const struct vm_operations_struct nfs_file_vm_ops;
@@ -294,6 +296,8 @@ nfs_file_fsync(struct file *file, loff_t start, loff_t end, int datasync)
int ret;
struct inode *inode = file_inode(file);
+ trace_nfs_fsync_enter(inode);
+
do {
ret = filemap_write_and_wait_range(inode->i_mapping, start, end);
if (ret != 0)
@@ -310,6 +314,7 @@ nfs_file_fsync(struct file *file, loff_t start, loff_t end, int datasync)
end = LLONG_MAX;
} while (ret == -EAGAIN);
+ trace_nfs_fsync_exit(inode, ret);
return ret;
}