1 /* SPDX-License-Identifier: GPL-2.0 */
2 #undef TRACE_SYSTEM
3 #define TRACE_SYSTEM mmap_lock
4 
5 #if !defined(_TRACE_MMAP_LOCK_H) || defined(TRACE_HEADER_MULTI_READ)
6 #define _TRACE_MMAP_LOCK_H
7 
8 #include <linux/tracepoint.h>
9 #include <linux/types.h>
10 
11 struct mm_struct;
12 
13 extern int trace_mmap_lock_reg(void);
14 extern void trace_mmap_lock_unreg(void);
15 
16 DECLARE_EVENT_CLASS(mmap_lock,
17 
18 	TP_PROTO(struct mm_struct *mm, const char *memcg_path, bool write),
19 
20 	TP_ARGS(mm, memcg_path, write),
21 
22 	TP_STRUCT__entry(
23 		__field(struct mm_struct *, mm)
24 		__string(memcg_path, memcg_path)
25 		__field(bool, write)
26 	),
27 
28 	TP_fast_assign(
29 		__entry->mm = mm;
30 		__assign_str(memcg_path, memcg_path);
31 		__entry->write = write;
32 	),
33 
34 	TP_printk(
35 		"mm=%p memcg_path=%s write=%s",
36 		__entry->mm,
37 		__get_str(memcg_path),
38 		__entry->write ? "true" : "false"
39 	)
40 );
41 
42 #define DEFINE_MMAP_LOCK_EVENT(name)                                    \
43 	DEFINE_EVENT_FN(mmap_lock, name,                                \
44 		TP_PROTO(struct mm_struct *mm, const char *memcg_path,  \
45 			bool write),                                    \
46 		TP_ARGS(mm, memcg_path, write),                         \
47 		trace_mmap_lock_reg, trace_mmap_lock_unreg)
48 
49 DEFINE_MMAP_LOCK_EVENT(mmap_lock_start_locking);
50 DEFINE_MMAP_LOCK_EVENT(mmap_lock_released);
51 
52 TRACE_EVENT_FN(mmap_lock_acquire_returned,
53 
54 	TP_PROTO(struct mm_struct *mm, const char *memcg_path, bool write,
55 		bool success),
56 
57 	TP_ARGS(mm, memcg_path, write, success),
58 
59 	TP_STRUCT__entry(
60 		__field(struct mm_struct *, mm)
61 		__string(memcg_path, memcg_path)
62 		__field(bool, write)
63 		__field(bool, success)
64 	),
65 
66 	TP_fast_assign(
67 		__entry->mm = mm;
68 		__assign_str(memcg_path, memcg_path);
69 		__entry->write = write;
70 		__entry->success = success;
71 	),
72 
73 	TP_printk(
74 		"mm=%p memcg_path=%s write=%s success=%s",
75 		__entry->mm,
76 		__get_str(memcg_path),
77 		__entry->write ? "true" : "false",
78 		__entry->success ? "true" : "false"
79 	),
80 
81 	trace_mmap_lock_reg, trace_mmap_lock_unreg
82 );
83 
84 #endif /* _TRACE_MMAP_LOCK_H */
85 
86 /* This part must be outside protection */
87 #include <trace/define_trace.h>
88