instrumentation/events/lttng-module/lock.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #include <linux/version.h>
   3
   4 #undef TRACE_SYSTEM
   5 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,33))
   6 #define TRACE_SYSTEM lock
   7 #else
   8 #define TRACE_SYSTEM lockdep
   9 #define TRACE_INCLUDE_FILE lock
  10 #if defined(_TRACE_LOCKDEP_H)
  11 #define LTTNG_TRACE_LOCK_H
  12 #endif
  13 #endif
  14
  15 #if !defined(LTTNG_TRACE_LOCK_H) || defined(TRACE_HEADER_MULTI_READ)
  16 #define LTTNG_TRACE_LOCK_H
  17
  18 #include <linux/lockdep.h>
  19 #include <probes/lttng-tracepoint-event.h>
  20
  21 #ifdef CONFIG_LOCKDEP
  22
  23 LTTNG_TRACEPOINT_EVENT(lock_acquire,
  24
  25         TP_PROTO(struct lockdep_map *lock, unsigned int subclass,
  26                 int trylock, int read, int check,
  27                 struct lockdep_map *next_lock, unsigned long ip),
  28
  29         TP_ARGS(lock, subclass, trylock, read, check, next_lock, ip),
  30
  31         TP_FIELDS(
  32                 ctf_integer(unsigned int, flags, (trylock ? 1 : 0) | (read ? 2 : 0))
  33                 ctf_string(name, lock->name)
  34 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,34))
  35                 ctf_integer_hex(void *, lockdep_addr, lock)
  36 #endif
  37         )
  38 )
  39
  40 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35))
  41
  42 LTTNG_TRACEPOINT_EVENT_CLASS(lock,
  43
  44         TP_PROTO(struct lockdep_map *lock, unsigned long ip),
  45
  46         TP_ARGS(lock, ip),
  47
  48         TP_FIELDS(
  49                 ctf_string(name, lock->name)
  50                 ctf_integer_hex(void *, lockdep_addr, lock)
  51         )
  52 )
  53
  54 LTTNG_TRACEPOINT_EVENT_INSTANCE(lock, lock_release,
  55
  56         TP_PROTO(struct lockdep_map *lock, unsigned long ip),
  57
  58         TP_ARGS(lock, ip)
  59 )
  60
  61 #ifdef CONFIG_LOCK_STAT
  62
  63 LTTNG_TRACEPOINT_EVENT_INSTANCE(lock, lock_contended,
  64
  65         TP_PROTO(struct lockdep_map *lock, unsigned long ip),
  66
  67         TP_ARGS(lock, ip)
  68 )
  69
  70 LTTNG_TRACEPOINT_EVENT_INSTANCE(lock, lock_acquired,
  71
  72         TP_PROTO(struct lockdep_map *lock, unsigned long ip),
  73
  74         TP_ARGS(lock, ip)
  75 )
  76
  77 #endif
  78
  79 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) */
  80
  81 LTTNG_TRACEPOINT_EVENT(lock_release,
  82
  83         TP_PROTO(struct lockdep_map *lock, int nested, unsigned long ip),
  84
  85         TP_ARGS(lock, nested, ip),
  86
  87         TP_FIELDS(
  88                 ctf_string(name, lock->name)
  89 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,34))
  90                 ctf_integer_hex(void *, lockdep_addr, lock)
  91 #endif
  92         )
  93 )
  94
  95 #ifdef CONFIG_LOCK_STAT
  96
  97 LTTNG_TRACEPOINT_EVENT(lock_contended,
  98
  99         TP_PROTO(struct lockdep_map *lock, unsigned long ip),
 100
 101         TP_ARGS(lock, ip),
 102
 103         TP_FIELDS(
 104                 ctf_string(name, lock->name)
 105 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,34))
 106                 ctf_integer_hex(void *, lockdep_addr, lock)
 107 #endif
 108         )
 109 )
 110
 111 LTTNG_TRACEPOINT_EVENT(lock_acquired,
 112
 113         TP_PROTO(struct lockdep_map *lock, unsigned long ip, s64 waittime),
 114
 115         TP_ARGS(lock, ip, waittime),
 116
 117         TP_FIELDS(
 118                 ctf_string(name, lock->name)
 119 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,34))
 120                 ctf_integer(s64, wait_nsec, wait_nsec)
 121                 ctf_integer_hex(void *, lockdep_addr, lock)
 122 #else
 123                 ctf_integer(unsigned long, wait_usec, (unsigned long) waittime)
 124                 ctf_integer(unsigned long, wait_nsec_rem, do_div(waittime, NSEC_PER_USEC))
 125 #endif
 126         )
 127 )
 128
 129 #endif
 130
 131 #endif /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) */
 132
 133 #endif
 134
 135 #endif /* LTTNG_TRACE_LOCK_H */
 136
 137 /* This part must be outside protection */
 138 #include <probes/define_trace.h>