From f4ce1299b329e96bb247c95c4fee8809827d6931 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Mon, 19 Aug 2013 18:59:33 -0400 Subject: 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 --- fs/nfs/file.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'fs/nfs/file.c') 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; } -- cgit v1.2.3