diff options
| author |   Trond Myklebust <trond.myklebust@hammerspace.com> | 2022-02-19 19:24:38 -0500 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@hammerspace.com> | 2022-03-02 08:43:39 -0500 |
| commit | 310e3187450db2ca5699758296d23fc2ce3f37f0 (patch) | |
| tree | bb3132708a016cdc00164c43834f3ea86828a2c6 /fs/nfs/nfstrace.h | |
| parent | NFS: Don't request readdirplus when revalidation was forced (diff) | |
| download | linux-dev-310e3187450db2ca5699758296d23fc2ce3f37f0.tar.xz linux-dev-310e3187450db2ca5699758296d23fc2ce3f37f0.zip | |
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.h | 68 |
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, |