[PATCH v1 v1 4/7] ntfs3: add directory index tracepoints
From: Baolin Liu <hidden>
Date: 2026-07-17 03:23:49
Also in:
lkml, ntfs3
Subsystem:
filesystems (vfs and infrastructure), ntfs3 filesystem, the rest, tracing · Maintainers:
Alexander Viro, Christian Brauner, Konstantin Komarov, Linus Torvalds, Steven Rostedt, Masami Hiramatsu
From: Baolin Liu <redacted> Add ntfs3 tracepoints for directory index operations. This adds trace events for dir_search_u(), indx_find(), indx_insert_entry(), and indx_delete_entry() to help observe directory index lookup, insert, and delete activity. Signed-off-by: Baolin Liu <redacted> --- fs/ntfs3/dir.c | 3 ++ fs/ntfs3/index.c | 8 ++++ include/trace/events/ntfs3.h | 81 ++++++++++++++++++++++++++++++++++++ 3 files changed, 92 insertions(+)
diff --git a/fs/ntfs3/dir.c b/fs/ntfs3/dir.c
index 873d52233003..eb10e7ff45bc 100644
--- a/fs/ntfs3/dir.c
+++ b/fs/ntfs3/dir.c@@ -14,6 +14,7 @@ #include "debug.h" #include "ntfs.h" #include "ntfs_fs.h" +#include <trace/events/ntfs3.h> /* Convert little endian UTF-16 to NLS string. */ int ntfs_utf16_to_nls(struct ntfs_sb_info *sbi, const __le16 *name, u32 len,
@@ -243,6 +244,8 @@ struct inode *dir_search_u(struct inode *dir, const struct cpu_str *uni, struct inode *inode = NULL; struct ntfs_fnd *fnd_a = NULL; + trace_ntfs3_dir_search_u(dir, uni ? uni->len : 0); + if (!fnd) { fnd_a = fnd_get(); if (!fnd_a) {
diff --git a/fs/ntfs3/index.c b/fs/ntfs3/index.c
index 2b439ac04356..d4ca7b1bb524 100644
--- a/fs/ntfs3/index.c
+++ b/fs/ntfs3/index.c@@ -13,6 +13,7 @@ #include "debug.h" #include "ntfs.h" #include "ntfs_fs.h" +#include <trace/events/ntfs3.h> static const struct INDEX_NAMES { const __le16 *name;
@@ -1179,6 +1180,8 @@ int indx_find(struct ntfs_index *indx, struct ntfs_inode *ni, if (!root) root = indx_get_root(&ni->dir, ni, NULL, NULL); + trace_ntfs3_indx_find(&ni->vfs_inode, indx->type, key_len); + if (!root) { /* Should not happen. */ return -EINVAL;
@@ -2051,6 +2054,9 @@ int indx_insert_entry(struct ntfs_index *indx, struct ntfs_inode *ni, return -EINVAL; } + trace_ntfs3_indx_insert_entry(&ni->vfs_inode, indx->type, + le16_to_cpu(new_de->key_size), undo); + if (fnd_is_empty(fnd)) { /* * Find the spot the tree where we want to
@@ -2409,6 +2415,8 @@ int indx_delete_entry(struct ntfs_index *indx, struct ntfs_inode *ni, return -EINVAL; } + trace_ntfs3_indx_delete_entry(&ni->vfs_inode, indx->type, key_len); + /* Locate the entry to remove. */ err = indx_find(indx, ni, root, key, key_len, ctx, &diff, &e, fnd); if (err)
diff --git a/include/trace/events/ntfs3.h b/include/trace/events/ntfs3.h
index cc9f4fee9ff8..f9d7051cd14b 100644
--- a/include/trace/events/ntfs3.h
+++ b/include/trace/events/ntfs3.h@@ -148,6 +148,87 @@ TRACE_EVENT(ntfs3_create_inode, __entry->name_len) ); +TRACE_EVENT(ntfs3_dir_search_u, + TP_PROTO(struct inode *dir, unsigned int name_len), + TP_ARGS(dir, name_len), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(unsigned long, dir_ino) + __field(unsigned int, name_len) + ), + TP_fast_assign( + __entry->dev = dir->i_sb->s_dev; + __entry->dir_ino = dir->i_ino; + __entry->name_len = name_len; + ), + TP_printk("dev=(%d,%d) dir=%lu name_len=%u", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->dir_ino, __entry->name_len) +); + +TRACE_EVENT(ntfs3_indx_find, + TP_PROTO(struct inode *inode, u8 type, size_t key_len), + TP_ARGS(inode, type, key_len), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(unsigned long, ino) + __field(u8, type) + __field(size_t, key_len) + ), + TP_fast_assign( + __entry->dev = inode->i_sb->s_dev; + __entry->ino = inode->i_ino; + __entry->type = type; + __entry->key_len = key_len; + ), + TP_printk("dev=(%d,%d) ino=%lu type=%u key_len=%zu", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->ino, __entry->type, __entry->key_len) +); + +TRACE_EVENT(ntfs3_indx_insert_entry, + TP_PROTO(struct inode *inode, u8 type, u16 key_len, bool undo), + TP_ARGS(inode, type, key_len, undo), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(unsigned long, ino) + __field(u8, type) + __field(u16, key_len) + __field(bool, undo) + ), + TP_fast_assign( + __entry->dev = inode->i_sb->s_dev; + __entry->ino = inode->i_ino; + __entry->type = type; + __entry->key_len = key_len; + __entry->undo = undo; + ), + TP_printk("dev=(%d,%d) ino=%lu type=%u key_len=%u undo=%d", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->ino, __entry->type, __entry->key_len, + __entry->undo) +); + +TRACE_EVENT(ntfs3_indx_delete_entry, + TP_PROTO(struct inode *inode, u8 type, u32 key_len), + TP_ARGS(inode, type, key_len), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(unsigned long, ino) + __field(u8, type) + __field(u32, key_len) + ), + TP_fast_assign( + __entry->dev = inode->i_sb->s_dev; + __entry->ino = inode->i_ino; + __entry->type = type; + __entry->key_len = key_len; + ), + TP_printk("dev=(%d,%d) ino=%lu type=%u key_len=%u", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->ino, __entry->type, __entry->key_len) +); + #endif /* _TRACE_NTFS3_H */ #include <trace/define_trace.h>
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2.51.0