probes/lockdep-trace.c

   1 /*
   2  * ltt/probes/lockdep-trace.c
   3  *
   4  * lockdep tracepoint probes.
   5  *
   6  * (C) Copyright 2009 - Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
   7  * Dual LGPL v2.1/GPL v2 license.
   8  */
   9
  10 #include <linux/module.h>
  11 #include <linux/lockdep.h>
  12 #include <trace/lockdep.h>
  13
  14 void probe_lockdep_hardirqs_on(void *data, unsigned long retaddr)
  15 {
  16         trace_mark_tp(lockdep, hardirqs_on, lockdep_hardirqs_on,
  17                 probe_lockdep_hardirqs_on, "retaddr 0x%lX", retaddr);
  18 }
  19
  20 void probe_lockdep_hardirqs_off(void *data, unsigned long retaddr)
  21 {
  22         trace_mark_tp(lockdep, hardirqs_off, lockdep_hardirqs_off,
  23                 probe_lockdep_hardirqs_off, "retaddr 0x%lX", retaddr);
  24 }
  25
  26 void probe_lockdep_softirqs_on(void *data, unsigned long retaddr)
  27 {
  28         trace_mark_tp(lockdep, softirqs_on, lockdep_softirqs_on,
  29                 probe_lockdep_softirqs_on, "retaddr 0x%lX", retaddr);
  30 }
  31
  32 void probe_lockdep_softirqs_off(void *data, unsigned long retaddr)
  33 {
  34         trace_mark_tp(lockdep, softirqs_off, lockdep_softirqs_off,
  35                 probe_lockdep_softirqs_off, "retaddr 0x%lX", retaddr);
  36 }
  37
  38 void probe_lockdep_lock_acquire(void *data, unsigned long retaddr,
  39                 unsigned int subclass, struct lockdep_map *lock, int trylock,
  40                 int read, int hardirqs_off)
  41 {
  42         trace_mark_tp(lockdep, lock_acquire, lockdep_lock_acquire,
  43                 probe_lockdep_lock_acquire,
  44                 "retaddr 0x%lX subclass %u lock %p trylock %d read %d "
  45                 "hardirqs_off %d",
  46                 retaddr, subclass, lock, trylock, read, hardirqs_off);
  47 }
  48
  49 void probe_lockdep_lock_release(void *data, unsigned long retaddr,
  50                 struct lockdep_map *lock, int nested)
  51 {
  52         trace_mark_tp(lockdep, lock_release, lockdep_lock_release,
  53                 probe_lockdep_lock_release,
  54                 "retaddr 0x%lX lock %p nested %d",
  55                 retaddr, lock, nested);
  56 }
  57
  58 MODULE_LICENSE("GPL and additional rights");
  59 MODULE_AUTHOR("Mathieu Desnoyers");
  60 MODULE_DESCRIPTION("lockdep Tracepoint Probes");