averello/linux-stable-mirror
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2026-06-21 15:43:21 +02:00
Code Issues Packages Projects Releases Wiki Activity

fsnotify: new tracepoint in fsnotify()

Browse Source 
Add a tracepoint so we can see exactly how this is being called.

Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Link: https://patch.msgid.link/20260428-dir-deleg-v3-5-5a0780ba9def@kernel.org
Acked-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Jeff Layton
2026-04-28 08:09:49 +01:00
committed by Christian Brauner
parent 95825fdcc0
commit ad4489dcd0
3 changed files with 91 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
fs/notify/fsnotify.c
+5
View File
@@ -14,6 +14,9 @@
#include <linux/fsnotify_backend.h>
#include "fsnotify.h"
#define CREATE_TRACE_POINTS
#include <trace/events/fsnotify.h>
/*
* Clear all of the marks on an inode when it is being evicted from core
*/
@@ -504,6 +507,8 @@ int fsnotify(__u32 mask, const void *data, int data_type, struct inode *dir,
int ret = 0;
__u32 test_mask, marks_mask = 0;
trace_fsnotify(mask, data, data_type, dir, file_name, inode, cookie);
if (path)
mnt = real_mount(path->mnt);
include/trace/events/fsnotify.h
+51
View File
@@ -0,0 +1,51 @@
/* SPDX-License-Identifier: GPL-2.0 */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM fsnotify
#if !defined(_TRACE_FSNOTIFY_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_FSNOTIFY_H
#include <linux/tracepoint.h>
#include <trace/misc/fsnotify.h>
TRACE_EVENT(fsnotify,
TP_PROTO(__u32 mask, const void *data, int data_type,
struct inode *dir, const struct qstr *file_name,
struct inode *inode, u32 cookie),
TP_ARGS(mask, data, data_type, dir, file_name, inode, cookie),
TP_STRUCT__entry(
__field(__u32, mask)
__field(unsigned long, dir_ino)
__field(unsigned long, ino)
__field(dev_t, s_dev)
__field(int, data_type)
__field(u32, cookie)
__string(file_name, file_name ? (const char *)file_name->name : "")
),
TP_fast_assign(
__entry->mask = mask;
__entry->dir_ino = dir ? dir->i_ino : 0;
__entry->ino = inode ? inode->i_ino : 0;
__entry->s_dev = dir ? dir->i_sb->s_dev :
inode ? inode->i_sb->s_dev : 0;
__entry->data_type = data_type;
__entry->cookie = cookie;
__assign_str(file_name);
),
TP_printk("dev=%d:%d dir=%lu ino=%lu data_type=%d cookie=0x%x mask=0x%x %s name=%s",
MAJOR(__entry->s_dev), MINOR(__entry->s_dev),
__entry->dir_ino, __entry->ino,
__entry->data_type, __entry->cookie,
__entry->mask, show_fsnotify_mask(__entry->mask),
__get_str(file_name))
);
#endif /* _TRACE_FSNOTIFY_H */
/* This part must be outside protection */
#include <trace/define_trace.h>
include/trace/misc/fsnotify.h
+35
View File
@@ -0,0 +1,35 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Display helpers for fsnotify events
*/
#include <linux/fsnotify_backend.h>
#define show_fsnotify_mask(mask) \
__print_flags(mask, "|", \
{ FS_ACCESS, "ACCESS" }, \
{ FS_MODIFY, "MODIFY" }, \
{ FS_ATTRIB, "ATTRIB" }, \
{ FS_CLOSE_WRITE, "CLOSE_WRITE" }, \
{ FS_CLOSE_NOWRITE, "CLOSE_NOWRITE" }, \
{ FS_OPEN, "OPEN" }, \
{ FS_MOVED_FROM, "MOVED_FROM" }, \
{ FS_MOVED_TO, "MOVED_TO" }, \
{ FS_CREATE, "CREATE" }, \
{ FS_DELETE, "DELETE" }, \
{ FS_DELETE_SELF, "DELETE_SELF" }, \
{ FS_MOVE_SELF, "MOVE_SELF" }, \
{ FS_OPEN_EXEC, "OPEN_EXEC" }, \
{ FS_UNMOUNT, "UNMOUNT" }, \
{ FS_Q_OVERFLOW, "Q_OVERFLOW" }, \
{ FS_ERROR, "ERROR" }, \
{ FS_OPEN_PERM, "OPEN_PERM" }, \
{ FS_ACCESS_PERM, "ACCESS_PERM" }, \
{ FS_OPEN_EXEC_PERM, "OPEN_EXEC_PERM" }, \
{ FS_PRE_ACCESS, "PRE_ACCESS" }, \
{ FS_MNT_ATTACH, "MNT_ATTACH" }, \
{ FS_MNT_DETACH, "MNT_DETACH" }, \
{ FS_EVENT_ON_CHILD, "EVENT_ON_CHILD" }, \
{ FS_RENAME, "RENAME" }, \
{ FS_DN_MULTISHOT, "DN_MULTISHOT" }, \
{ FS_ISDIR, "ISDIR" })