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authorTrond Myklebust <trond.myklebust@hammerspace.com>2022-02-20 03:09:21 +0300
committerTrond Myklebust <trond.myklebust@hammerspace.com>2022-03-02 16:43:39 +0300
commit11d03d0a1ed8dbdabab1b5ab21861ad5cad4aef2 (patch)
treea24511916a63c257ca71b92cbe7d6bb0c222b182 /fs/nfs/nfstrace.h
parenteace45a18ccb34a746c3060601103aa14ca29923 (diff)
downloadlinux-11d03d0a1ed8dbdabab1b5ab21861ad5cad4aef2.tar.xz
NFS: Trace effects of the readdirplus heuristic
Enable tracking of when the readdirplus heuristic causes a page cache invalidation. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Diffstat (limited to 'fs/nfs/nfstrace.h')
-rw-r--r--fs/nfs/nfstrace.h50
1 files changed, 50 insertions, 0 deletions
diff --git a/fs/nfs/nfstrace.h b/fs/nfs/nfstrace.h
index 7c1102b991d0..ec2645d20abf 100644
--- a/fs/nfs/nfstrace.h
+++ b/fs/nfs/nfstrace.h
@@ -273,6 +273,56 @@ DEFINE_NFS_UPDATE_SIZE_EVENT(wcc);
DEFINE_NFS_UPDATE_SIZE_EVENT(update);
DEFINE_NFS_UPDATE_SIZE_EVENT(grow);
+DECLARE_EVENT_CLASS(nfs_inode_range_event,
+ TP_PROTO(
+ const struct inode *inode,
+ loff_t range_start,
+ loff_t range_end
+ ),
+
+ TP_ARGS(inode, range_start, range_end),
+
+ TP_STRUCT__entry(
+ __field(dev_t, dev)
+ __field(u32, fhandle)
+ __field(u64, fileid)
+ __field(u64, version)
+ __field(loff_t, range_start)
+ __field(loff_t, range_end)
+ ),
+
+ TP_fast_assign(
+ const struct nfs_inode *nfsi = NFS_I(inode);
+
+ __entry->dev = inode->i_sb->s_dev;
+ __entry->fhandle = nfs_fhandle_hash(&nfsi->fh);
+ __entry->fileid = nfsi->fileid;
+ __entry->version = inode_peek_iversion_raw(inode);
+ __entry->range_start = range_start;
+ __entry->range_end = range_end;
+ ),
+
+ TP_printk(
+ "fileid=%02x:%02x:%llu fhandle=0x%08x version=%llu "
+ "range=[%lld, %lld]",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ (unsigned long long)__entry->fileid,
+ __entry->fhandle, __entry->version,
+ __entry->range_start, __entry->range_end
+ )
+);
+
+#define DEFINE_NFS_INODE_RANGE_EVENT(name) \
+ DEFINE_EVENT(nfs_inode_range_event, name, \
+ TP_PROTO( \
+ const struct inode *inode, \
+ loff_t range_start, \
+ loff_t range_end \
+ ), \
+ TP_ARGS(inode, range_start, range_end))
+
+DEFINE_NFS_INODE_RANGE_EVENT(nfs_readdir_invalidate_cache_range);
+
DECLARE_EVENT_CLASS(nfs_readdir_event,
TP_PROTO(
const struct file *file,