Add a tracepoint so we can see exactly how this is being called.
Unified · Split
| @@ -14,6 +14,9 @@ · 13 unmodified lines | ||
| 14 | 14 | #include <linux/fsnotify_backend.h> |
| 15 | 15 | #include "fsnotify.h" |
| 16 | 16 | |
| 17 | +#define CREATE_TRACE_POINTS | |
| 18 | +#include <trace/events/fsnotify.h> | |
| 19 | + | |
| 17 | 20 | /* |
| 18 | 21 | * Clear all of the marks on an inode when it is being evicted from core |
| 19 | 22 | */ |
| @@ -504,6 +507,8 @@ int fsnotify(__u32 mask, const void *data, int data_type, struct inode *dir, · 484 unmodified lines | ||
| 504 | 507 | int ret = 0; |
| 505 | 508 | __u32 test_mask, marks_mask = 0; |
| 506 | 509 | |
| 510 | + trace_fsnotify(mask, data, data_type, dir, file_name, inode, cookie); | |
| 511 | + | |
| 507 | 512 | if (path) |
| 508 | 513 | mnt = real_mount(path->mnt); |
| 509 | 514 | |
| @@ -0,0 +1,51 @@ | ||
| 1 | +/* SPDX-License-Identifier: GPL-2.0 */ | |
| 2 | +#undef TRACE_SYSTEM | |
| 3 | +#define TRACE_SYSTEM fsnotify | |
| 4 | + | |
| 5 | +#if !defined(_TRACE_FSNOTIFY_H) || defined(TRACE_HEADER_MULTI_READ) | |
| 6 | +#define _TRACE_FSNOTIFY_H | |
| 7 | + | |
| 8 | +#include <linux/tracepoint.h> | |
| 9 | + | |
| 10 | +#include <trace/misc/fsnotify.h> | |
| 11 | + | |
| 12 | +TRACE_EVENT(fsnotify, | |
| 13 | + TP_PROTO(__u32 mask, const void *data, int data_type, | |
| 14 | + struct inode *dir, const struct qstr *file_name, | |
| 15 | + struct inode *inode, u32 cookie), | |
| 16 | + | |
| 17 | + TP_ARGS(mask, data, data_type, dir, file_name, inode, cookie), | |
| 18 | + | |
| 19 | + TP_STRUCT__entry( | |
| 20 | + __field(__u32, mask) | |
| 21 | + __field(unsigned long, dir_ino) | |
| 22 | + __field(unsigned long, ino) | |
| 23 | + __field(dev_t, s_dev) | |
| 24 | + __field(int, data_type) | |
| 25 | + __field(u32, cookie) | |
| 26 | + __string(file_name, file_name ? (const char *)file_name->name : "") | |
| 27 | + ), | |
| 28 | + | |
| 29 | + TP_fast_assign( | |
| 30 | + __entry->mask = mask; | |
| 31 | + __entry->dir_ino = dir ? dir->i_ino : 0; | |
| 32 | + __entry->ino = inode ? inode->i_ino : 0; | |
| 33 | + __entry->s_dev = dir ? dir->i_sb->s_dev : | |
| 34 | + inode ? inode->i_sb->s_dev : 0; | |
| 35 | + __entry->data_type = data_type; | |
| 36 | + __entry->cookie = cookie; | |
| 37 | + __assign_str(file_name); | |
| 38 | + ), | |
| 39 | + | |
| 40 | + TP_printk("dev=%d:%d dir=%lu ino=%lu data_type=%d cookie=0x%x mask=0x%x %s name=%s", | |
| 41 | + MAJOR(__entry->s_dev), MINOR(__entry->s_dev), | |
| 42 | + __entry->dir_ino, __entry->ino, | |
| 43 | + __entry->data_type, __entry->cookie, | |
| 44 | + __entry->mask, show_fsnotify_mask(__entry->mask), | |
| 45 | + __get_str(file_name)) | |
| 46 | +); | |
| 47 | + | |
| 48 | +#endif /* _TRACE_FSNOTIFY_H */ | |
| 49 | + | |
| 50 | +/* This part must be outside protection */ | |
| 51 | +#include <trace/define_trace.h> | |
| @@ -0,0 +1,35 @@ | ||
| 1 | +/* SPDX-License-Identifier: GPL-2.0 */ | |
| 2 | +/* | |
| 3 | + * Display helpers for fsnotify events | |
| 4 | + */ | |
| 5 | + | |
| 6 | +#include <linux/fsnotify_backend.h> | |
| 7 | + | |
| 8 | +#define show_fsnotify_mask(mask) \ | |
| 9 | + __print_flags(mask, "|", \ | |
| 10 | + { FS_ACCESS, "ACCESS" }, \ | |
| 11 | + { FS_MODIFY, "MODIFY" }, \ | |
| 12 | + { FS_ATTRIB, "ATTRIB" }, \ | |
| 13 | + { FS_CLOSE_WRITE, "CLOSE_WRITE" }, \ | |
| 14 | + { FS_CLOSE_NOWRITE, "CLOSE_NOWRITE" }, \ | |
| 15 | + { FS_OPEN, "OPEN" }, \ | |
| 16 | + { FS_MOVED_FROM, "MOVED_FROM" }, \ | |
| 17 | + { FS_MOVED_TO, "MOVED_TO" }, \ | |
| 18 | + { FS_CREATE, "CREATE" }, \ | |
| 19 | + { FS_DELETE, "DELETE" }, \ | |
| 20 | + { FS_DELETE_SELF, "DELETE_SELF" }, \ | |
| 21 | + { FS_MOVE_SELF, "MOVE_SELF" }, \ | |
| 22 | + { FS_OPEN_EXEC, "OPEN_EXEC" }, \ | |
| 23 | + { FS_UNMOUNT, "UNMOUNT" }, \ | |
| 24 | + { FS_Q_OVERFLOW, "Q_OVERFLOW" }, \ | |
| 25 | + { FS_ERROR, "ERROR" }, \ | |
| 26 | + { FS_OPEN_PERM, "OPEN_PERM" }, \ | |
| 27 | + { FS_ACCESS_PERM, "ACCESS_PERM" }, \ | |
| 28 | + { FS_OPEN_EXEC_PERM, "OPEN_EXEC_PERM" }, \ | |
| 29 | + { FS_PRE_ACCESS, "PRE_ACCESS" }, \ | |
| 30 | + { FS_MNT_ATTACH, "MNT_ATTACH" }, \ | |
| 31 | + { FS_MNT_DETACH, "MNT_DETACH" }, \ | |
| 32 | + { FS_EVENT_ON_CHILD, "EVENT_ON_CHILD" }, \ | |
| 33 | + { FS_RENAME, "RENAME" }, \ | |
| 34 | + { FS_DN_MULTISHOT, "DN_MULTISHOT" }, \ | |
| 35 | + { FS_ISDIR, "ISDIR" }) | |