include/trace/events/lockdep.h

   1 #if !defined(_TRACE_LOCKDEP_H) || defined(TRACE_HEADER_MULTI_READ)
   2 #define _TRACE_LOCKDEP_H
   3
   4 #include <linux/lockdep.h>
   5 #include <linux/tracepoint.h>
   6
   7 #undef TRACE_SYSTEM
   8 #define TRACE_SYSTEM lockdep
   9
  10 #ifdef CONFIG_LOCKDEP
  11
  12 TRACE_FORMAT(lock_acquire,
  13         TP_PROTO(struct lockdep_map *lock, unsigned int subclass,
  14                 int trylock, int read, int check,
  15                 struct lockdep_map *next_lock, unsigned long ip),
  16         TP_ARGS(lock, subclass, trylock, read, check, next_lock, ip),
  17         TP_FMT("%s%s%s", trylock ? "try " : "",
  18                 read ? "read " : "", lock->name)
  19         );
  20
  21 TRACE_FORMAT(lock_release,
  22         TP_PROTO(struct lockdep_map *lock, int nested, unsigned long ip),
  23         TP_ARGS(lock, nested, ip),
  24         TP_FMT("%s", lock->name)
  25         );
  26
  27 #ifdef CONFIG_LOCK_STAT
  28
  29 TRACE_FORMAT(lock_contended,
  30         TP_PROTO(struct lockdep_map *lock, unsigned long ip),
  31         TP_ARGS(lock, ip),
  32         TP_FMT("%s", lock->name)
  33         );
  34
  35 TRACE_EVENT(lock_acquired,
  36         TP_PROTO(struct lockdep_map *lock, unsigned long ip, s64 waittime),
  37
  38         TP_ARGS(lock, ip, waittime),
  39
  40         TP_STRUCT__entry(
  41                 __field(const char *, name)
  42                 __field(unsigned long, wait_usec)
  43                 __field(unsigned long, wait_nsec_rem)
  44         ),
  45         TP_fast_assign(
  46                 __entry->name = lock->name;
  47                 __entry->wait_nsec_rem = do_div(waittime, NSEC_PER_USEC);
  48                 __entry->wait_usec = (unsigned long) waittime;
  49         ),
  50         TP_printk("%s (%lu.%03lu us)", __entry->name, __entry->wait_usec,
  51                                        __entry->wait_nsec_rem)
  52 );
  53
  54 #endif
  55 #endif
  56
  57 #endif /* _TRACE_LOCKDEP_H */
  58
  59 /* This part must be outside protection */
  60 #include <trace/define_trace.h>