contrib/fsm_checker/LOCK_CHECK/fsm_locking.sm

   1 %start Map1::S0
   2 %class lockclass
   3 %header lockclass.h
   4
   5 %map Map1
   6 %%
   7
   8 S0
   9 {
  10         acquire_lock(lock: void *, lock_add: guint32, hardirqs_off: int,hardirq_context: int, pid: int)
  11                 [irq_check(ctxt, lock, hardirqs_off, hardirq_context)]  S0
  12                 {updatelock(lock, lock_add, pid, hardirqs_off, hardirq_context);warning("potential deadlock", lock);pushlock(lock);}
  13         acquire_lock(lock: void *, lock_add: guint32, hardirqs_off: int,hardirq_context: int, pid: int)
  14                                                                 Locks_acquired
  15                 {updatelock(lock, lock_add, pid, hardirqs_off, hardirq_context);pushlock(lock);}
  16         free_lock(lock: void *)
  17                                                                 S0
  18                 {clearlock(lock);}
  19
  20         Default
  21                                                 S0
  22                                                 {}
  23 }
  24 Locks_acquired
  25 {
  26         acquire_lock(lock: void *, lock_add: guint32,  hardirqs_off: int,hardirq_context: int, pid: int)
  27                 [irq_check(ctxt, lock, hardirqs_off, hardirq_context)]          Locks_acquired
  28                 {updatelock(lock, lock_add, pid, hardirqs_off, hardirq_context);pushlock(lock);warning("potential deadlock", lock);}
  29         acquire_lock(lock: void *, lock_add: guint32,  hardirqs_off: int,hardirq_context: int, pid: int)
  30                                                                         Locks_acquired
  31                 {updatelock(lock, lock_add, pid, hardirqs_off, hardirq_context);pushlock(lock);}
  32         release_lock(lock: void *)
  33                 [empty_stack(ctxt)]                                     S0
  34                 {poplock(lock);}
  35         release_lock(lock: void *)
  36                                                                         Locks_acquired
  37                 {poplock(lock);}
  38         free_lock(lock: void *)
  39                 [lock_held(ctxt, lock)]         Locks_acquired
  40                 {warning("Lockdep attempting to free a held lock", lock);}
  41         free_lock(lock: void *)
  42                                                                         Locks_acquired
  43                 {clearlock(lock);}
  44         schedule_out(pid: guint32)
  45                 [lock_held_on_behalf(ctxt, pid)]                Locks_acquired
  46         //      {warning("process... was scheduled out when a lock is being held on its behalf", NULL);printstack();
  47         //              schedule_err(pid);}
  48                 {test();}
  49         Default
  50                                                 Locks_acquired
  51         {}
  52 }
  53 Potential_Deadlock
  54 {
  55         Default                                 Potential_Deadlock      {}
  56 }
  57 Error{
  58         Default                                 Error   {}
  59 }
  60 %%