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 DECLARE_EVENT_CLASS(mmap_lock,
  14
  15         TP_PROTO(struct mm_struct *mm, const char *memcg_path, bool write),
  16
  17         TP_ARGS(mm, memcg_path, write),
  18
  19         TP_STRUCT__entry(
  20                 __field(struct mm_struct *, mm)
  21                 __string(memcg_path, memcg_path)
  22                 __field(bool, write)
  23         ),
  24
  25         TP_fast_assign(
  26                 __entry->mm = mm;
  27                 __assign_str(memcg_path);
  28                 __entry->write = write;
  29         ),
  30
  31         TP_printk(
  32                 "mm=%p memcg_path=%s write=%s",
  33                 __entry->mm,
  34                 __get_str(memcg_path),
  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, const char *memcg_path,  \
  42                         bool write),                                    \
  43                 TP_ARGS(mm, memcg_path, write))
  44
  45 DEFINE_MMAP_LOCK_EVENT(mmap_lock_start_locking);
  46 DEFINE_MMAP_LOCK_EVENT(mmap_lock_released);
  47
  48 TRACE_EVENT(mmap_lock_acquire_returned,
  49
  50         TP_PROTO(struct mm_struct *mm, const char *memcg_path, bool write,
  51                 bool success),
  52
  53         TP_ARGS(mm, memcg_path, write, success),
  54
  55         TP_STRUCT__entry(
  56                 __field(struct mm_struct *, mm)
  57                 __string(memcg_path, memcg_path)
  58                 __field(bool, write)
  59                 __field(bool, success)
  60         ),
  61
  62         TP_fast_assign(
  63                 __entry->mm = mm;
  64                 __assign_str(memcg_path);
  65                 __entry->write = write;
  66                 __entry->success = success;
  67         ),
  68
  69         TP_printk(
  70                 "mm=%p memcg_path=%s write=%s success=%s",
  71                 __entry->mm,
  72                 __get_str(memcg_path),
  73                 __entry->write ? "true" : "false",
  74                 __entry->success ? "true" : "false"
  75         )
  76 );
  77
  78 #endif /* _TRACE_MMAP_LOCK_H */
  79
  80 /* This part must be outside protection */
  81 #include <trace/define_trace.h>