drivers/staging/lttng/instrumentation/events/lttng-module/lock.h

   1 #include <linux/version.h>
   2
   3 #undef TRACE_SYSTEM
   4 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,33))
   5 #define TRACE_SYSTEM lock
   6 #else
   7 #define TRACE_SYSTEM lockdep
   8 #define TRACE_INCLUDE_FILE lock
   9 #if defined(_TRACE_LOCKDEP_H)
  10 #define _TRACE_LOCK_H
  11 #endif
  12 #endif
  13
  14 #if !defined(_TRACE_LOCK_H) || defined(TRACE_HEADER_MULTI_READ)
  15 #define _TRACE_LOCK_H
  16
  17 #include <linux/lockdep.h>
  18 #include <linux/tracepoint.h>
  19
  20 #ifdef CONFIG_LOCKDEP
  21
  22 TRACE_EVENT(lock_acquire,
  23
  24         TP_PROTO(struct lockdep_map *lock, unsigned int subclass,
  25                 int trylock, int read, int check,
  26                 struct lockdep_map *next_lock, unsigned long ip),
  27
  28         TP_ARGS(lock, subclass, trylock, read, check, next_lock, ip),
  29
  30         TP_STRUCT__entry(
  31                 __field(unsigned int, flags)
  32                 __string(name, lock->name)
  33 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,34))
  34                 __field(void *, lockdep_addr)
  35 #endif
  36         ),
  37
  38         TP_fast_assign(
  39                 tp_assign(flags, (trylock ? 1 : 0) | (read ? 2 : 0))
  40                 tp_strcpy(name, lock->name)
  41 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,34))
  42                 tp_assign(lockdep_addr, lock)
  43 #endif
  44         ),
  45
  46 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,34))
  47         TP_printk("%p %s%s%s", __entry->lockdep_addr,
  48 #else
  49         TP_printk("%s%s%s",
  50 #endif
  51                   (__entry->flags & 1) ? "try " : "",
  52                   (__entry->flags & 2) ? "read " : "",
  53                   __get_str(name))
  54 )
  55
  56 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35))
  57
  58 DECLARE_EVENT_CLASS(lock,
  59
  60         TP_PROTO(struct lockdep_map *lock, unsigned long ip),
  61
  62         TP_ARGS(lock, ip),
  63
  64         TP_STRUCT__entry(
  65                 __string(       name,   lock->name      )
  66                 __field(        void *, lockdep_addr    )
  67         ),
  68
  69         TP_fast_assign(
  70                 tp_strcpy(name, lock->name)
  71                 tp_assign(lockdep_addr, lock)
  72         ),
  73
  74         TP_printk("%p %s",  __entry->lockdep_addr, __get_str(name))
  75 )
  76
  77 DEFINE_EVENT(lock, lock_release,
  78
  79         TP_PROTO(struct lockdep_map *lock, unsigned long ip),
  80
  81         TP_ARGS(lock, ip)
  82 )
  83
  84 #ifdef CONFIG_LOCK_STAT
  85
  86 DEFINE_EVENT(lock, lock_contended,
  87
  88         TP_PROTO(struct lockdep_map *lock, unsigned long ip),
  89
  90         TP_ARGS(lock, ip)
  91 )
  92
  93 DEFINE_EVENT(lock, lock_acquired,
  94
  95         TP_PROTO(struct lockdep_map *lock, unsigned long ip),
  96
  97         TP_ARGS(lock, ip)
  98 )
  99
 100 #endif
 101
 102 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) */
 103
 104 TRACE_EVENT(lock_release,
 105
 106         TP_PROTO(struct lockdep_map *lock, int nested, unsigned long ip),
 107
 108         TP_ARGS(lock, nested, ip),
 109
 110         TP_STRUCT__entry(
 111                 __string(       name,   lock->name      )
 112 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,34))
 113                 __field(        void *, lockdep_addr    )
 114 #endif
 115         ),
 116
 117         TP_fast_assign(
 118                 tp_strcpy(name, lock->name)
 119 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,34))
 120                 tp_assign(lockdep_addr, lock)
 121 #endif
 122         ),
 123
 124 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,34))
 125         TP_printk("%p %s",  __entry->lockdep_addr, __get_str(name))
 126 #else
 127         TP_printk("%s",  __get_str(name))
 128 #endif
 129 )
 130
 131 #ifdef CONFIG_LOCK_STAT
 132
 133 TRACE_EVENT(lock_contended,
 134
 135         TP_PROTO(struct lockdep_map *lock, unsigned long ip),
 136
 137         TP_ARGS(lock, ip),
 138
 139         TP_STRUCT__entry(
 140                 __string(       name,   lock->name      )
 141 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,34))
 142                 __field(        void *, lockdep_addr    )
 143 #endif
 144         ),
 145
 146         TP_fast_assign(
 147                 tp_strcpy(name, lock->name)
 148 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,34))
 149                 tp_assign(lockdep_addr, lock)
 150 #endif
 151         ),
 152
 153 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,34))
 154         TP_printk("%p %s",  __entry->lockdep_addr, __get_str(name))
 155 #else
 156         TP_printk("%s",  __get_str(name))
 157 #endif
 158 )
 159
 160 TRACE_EVENT(lock_acquired,
 161
 162         TP_PROTO(struct lockdep_map *lock, unsigned long ip, s64 waittime),
 163
 164         TP_ARGS(lock, ip, waittime),
 165
 166         TP_STRUCT__entry(
 167                 __string(       name,   lock->name      )
 168 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,34))
 169                 __field(        s64,    wait_nsec       )
 170                 __field(        void *, lockdep_addr    )
 171 #else
 172                 __field(unsigned long, wait_usec)
 173                 __field(unsigned long, wait_nsec_rem)
 174 #endif
 175         ),
 176
 177         TP_fast_assign(
 178                 tp_strcpy(name, lock->name)
 179 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,34))
 180                 tp_assign(wait_nsec, waittime)
 181                 tp_assign(lockdep_addr, lock)
 182 #else
 183                 tp_assign(wait_usec, (unsigned long)waittime)
 184                 tp_assign(wait_nsec_rem, do_div(waittime, NSEC_PER_USEC))
 185 #endif
 186         ),
 187
 188 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,34))
 189         TP_printk("%p %s (%llu ns)",  __entry->lockdep_addr,
 190                   __get_str(name), __entry->wait_nsec)
 191 #else
 192         TP_printk("%s (%lu.%03lu us)",
 193                   __get_str(name),
 194                   __entry->wait_usec, __entry->wait_nsec_rem)
 195 #endif
 196 )
 197
 198 #endif
 199
 200 #endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) */
 201
 202 #endif
 203
 204 #endif /* _TRACE_LOCK_H */
 205
 206 /* This part must be outside protection */
 207 #include "../../../probes/define_trace.h"