include/trace/events/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/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>