1 /* SPDX-License-Identifier: GPL-2.0 */
3 #define TRACE_SYSTEM mmap_lock
5 #if !defined(_TRACE_MMAP_LOCK_H) || defined(TRACE_HEADER_MULTI_READ)
6 #define _TRACE_MMAP_LOCK_H
8 #include <linux/tracepoint.h>
9 #include <linux/types.h>
13 extern int trace_mmap_lock_reg(void);
14 extern void trace_mmap_lock_unreg(void);
16 DECLARE_EVENT_CLASS(mmap_lock,
18 TP_PROTO(struct mm_struct *mm, const char *memcg_path, bool write),
20 TP_ARGS(mm, memcg_path, write),
23 __field(struct mm_struct *, mm)
24 __string(memcg_path, memcg_path)
30 __assign_str(memcg_path, memcg_path);
31 __entry->write = write;
35 "mm=%p memcg_path=%s write=%s",
37 __get_str(memcg_path),
38 __entry->write ? "true" : "false"
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, \
46 TP_ARGS(mm, memcg_path, write), \
47 trace_mmap_lock_reg, trace_mmap_lock_unreg)
49 DEFINE_MMAP_LOCK_EVENT(mmap_lock_start_locking);
50 DEFINE_MMAP_LOCK_EVENT(mmap_lock_released);
52 TRACE_EVENT_FN(mmap_lock_acquire_returned,
54 TP_PROTO(struct mm_struct *mm, const char *memcg_path, bool write,
57 TP_ARGS(mm, memcg_path, write, success),
60 __field(struct mm_struct *, mm)
61 __string(memcg_path, memcg_path)
63 __field(bool, success)
68 __assign_str(memcg_path, memcg_path);
69 __entry->write = write;
70 __entry->success = success;
74 "mm=%p memcg_path=%s write=%s success=%s",
76 __get_str(memcg_path),
77 __entry->write ? "true" : "false",
78 __entry->success ? "true" : "false"
81 trace_mmap_lock_reg, trace_mmap_lock_unreg
84 #endif /* _TRACE_MMAP_LOCK_H */
86 /* This part must be outside protection */
87 #include <trace/define_trace.h>