mmap_lock.h

 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/memcontrol.h>
 9#include <linux/tracepoint.h>
10#include <linux/types.h>
11
12struct mm_struct;
13
14DECLARE_EVENT_CLASS(mmap_lock,
15
16	TP_PROTO(struct mm_struct *mm, bool write),
17
18	TP_ARGS(mm, write),
19
20	TP_STRUCT__entry(
21		__field(struct mm_struct *, mm)
22		__field(u64, memcg_id)
23		__field(bool, write)
24	),
25
26	TP_fast_assign(
27		__entry->mm = mm;
28		__entry->memcg_id = cgroup_id_from_mm(mm);
29		__entry->write = write;
30	),
31
32	TP_printk(
33		"mm=%p memcg_id=%llu write=%s",
34		__entry->mm, __entry->memcg_id,
35		__entry->write ? "true" : "false"
36	)
37);
38
39#define DEFINE_MMAP_LOCK_EVENT(name)                                    \
40	DEFINE_EVENT(mmap_lock, name,                                   \
41		TP_PROTO(struct mm_struct *mm, bool write),		\
42		TP_ARGS(mm, write))
43
44DEFINE_MMAP_LOCK_EVENT(mmap_lock_start_locking);
45DEFINE_MMAP_LOCK_EVENT(mmap_lock_released);
46
47TRACE_EVENT(mmap_lock_acquire_returned,
48
49	TP_PROTO(struct mm_struct *mm, bool write, bool success),
50
51	TP_ARGS(mm, write, success),
52
53	TP_STRUCT__entry(
54		__field(struct mm_struct *, mm)
55		__field(u64, memcg_id)
56		__field(bool, write)
57		__field(bool, success)
58	),
59
60	TP_fast_assign(
61		__entry->mm = mm;
62		__entry->memcg_id = cgroup_id_from_mm(mm);
63		__entry->write = write;
64		__entry->success = success;
65	),
66
67	TP_printk(
68		"mm=%p memcg_id=%llu write=%s success=%s",
69		__entry->mm,
70		__entry->memcg_id,
71		__entry->write ? "true" : "false",
72		__entry->success ? "true" : "false"
73	)
74);
75
76#endif /* _TRACE_MMAP_LOCK_H */
77
78/* This part must be outside protection */
79#include <trace/define_trace.h>