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authorTrond Myklebust <trond.myklebust@hammerspace.com>2022-02-20 03:24:38 +0300
committerTrond Myklebust <trond.myklebust@hammerspace.com>2022-03-02 16:43:39 +0300
commit310e3187450db2ca5699758296d23fc2ce3f37f0 (patch)
treebb3132708a016cdc00164c43834f3ea86828a2c6 /fs/nfs/nfstrace.h
parent0b3cc71b5ab31ef90eb9b8b2d8ca580fbf88c590 (diff)
downloadlinux-310e3187450db2ca5699758296d23fc2ce3f37f0.tar.xz
NFS: Add basic readdir tracing
Add tracing to track how often the client goes to the server for updated readdir information. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Diffstat (limited to 'fs/nfs/nfstrace.h')
-rw-r--r--fs/nfs/nfstrace.h68
1 files changed, 68 insertions, 0 deletions
diff --git a/fs/nfs/nfstrace.h b/fs/nfs/nfstrace.h
index 3672f6703ee7..c2d0543ecb2d 100644
--- a/fs/nfs/nfstrace.h
+++ b/fs/nfs/nfstrace.h
@@ -160,6 +160,8 @@ DEFINE_NFS_INODE_EVENT(nfs_fsync_enter);
DEFINE_NFS_INODE_EVENT_DONE(nfs_fsync_exit);
DEFINE_NFS_INODE_EVENT(nfs_access_enter);
DEFINE_NFS_INODE_EVENT_DONE(nfs_set_cache_invalid);
+DEFINE_NFS_INODE_EVENT_DONE(nfs_readdir_cache_fill_done);
+DEFINE_NFS_INODE_EVENT_DONE(nfs_readdir_uncached_done);
TRACE_EVENT(nfs_access_exit,
TP_PROTO(
@@ -271,6 +273,72 @@ DEFINE_NFS_UPDATE_SIZE_EVENT(wcc);
DEFINE_NFS_UPDATE_SIZE_EVENT(update);
DEFINE_NFS_UPDATE_SIZE_EVENT(grow);
+DECLARE_EVENT_CLASS(nfs_readdir_event,
+ TP_PROTO(
+ const struct file *file,
+ const __be32 *verifier,
+ u64 cookie,
+ pgoff_t page_index,
+ unsigned int dtsize
+ ),
+
+ TP_ARGS(file, verifier, cookie, page_index, dtsize),
+
+ TP_STRUCT__entry(
+ __field(dev_t, dev)
+ __field(u32, fhandle)
+ __field(u64, fileid)
+ __field(u64, version)
+ __array(char, verifier, NFS4_VERIFIER_SIZE)
+ __field(u64, cookie)
+ __field(pgoff_t, index)
+ __field(unsigned int, dtsize)
+ ),
+
+ TP_fast_assign(
+ const struct inode *dir = file_inode(file);
+ const struct nfs_inode *nfsi = NFS_I(dir);
+
+ __entry->dev = dir->i_sb->s_dev;
+ __entry->fileid = nfsi->fileid;
+ __entry->fhandle = nfs_fhandle_hash(&nfsi->fh);
+ __entry->version = inode_peek_iversion_raw(dir);
+ if (cookie != 0)
+ memcpy(__entry->verifier, verifier,
+ NFS4_VERIFIER_SIZE);
+ else
+ memset(__entry->verifier, 0,
+ NFS4_VERIFIER_SIZE);
+ __entry->cookie = cookie;
+ __entry->index = page_index;
+ __entry->dtsize = dtsize;
+ ),
+
+ TP_printk(
+ "fileid=%02x:%02x:%llu fhandle=0x%08x version=%llu "
+ "cookie=%s:0x%llx cache_index=%lu dtsize=%u",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ (unsigned long long)__entry->fileid, __entry->fhandle,
+ __entry->version, show_nfs4_verifier(__entry->verifier),
+ (unsigned long long)__entry->cookie, __entry->index,
+ __entry->dtsize
+ )
+);
+
+#define DEFINE_NFS_READDIR_EVENT(name) \
+ DEFINE_EVENT(nfs_readdir_event, name, \
+ TP_PROTO( \
+ const struct file *file, \
+ const __be32 *verifier, \
+ u64 cookie, \
+ pgoff_t page_index, \
+ unsigned int dtsize \
+ ), \
+ TP_ARGS(file, verifier, cookie, page_index, dtsize))
+
+DEFINE_NFS_READDIR_EVENT(nfs_readdir_cache_fill);
+DEFINE_NFS_READDIR_EVENT(nfs_readdir_uncached);
+
DECLARE_EVENT_CLASS(nfs_lookup_event,
TP_PROTO(
const struct inode *dir,