Commit eedeeabd authored by Peter Zijlstra's avatar Peter Zijlstra Committed by Ingo Molnar

lockdep: add stack dumps to asserts

Have a better idea about exactly which loc causes a lockdep
limit overflow. Often it's a bug or inefficiency in that
subsystem.
Signed-off-by: default avatarPeter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1237376327.5069.253.camel@laptop>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 7f1e2ca9
......@@ -792,6 +792,7 @@ register_lock_class(struct lockdep_map *lock, unsigned int subclass, int force)
printk("BUG: MAX_LOCKDEP_KEYS too low!\n");
printk("turning off the locking correctness validator.\n");
dump_stack();
return NULL;
}
class = lock_classes + nr_lock_classes++;
......@@ -855,6 +856,7 @@ static struct lock_list *alloc_list_entry(void)
printk("BUG: MAX_LOCKDEP_ENTRIES too low!\n");
printk("turning off the locking correctness validator.\n");
dump_stack();
return NULL;
}
return list_entries + nr_list_entries++;
......@@ -1681,6 +1683,7 @@ static inline int lookup_chain_cache(struct task_struct *curr,
printk("BUG: MAX_LOCKDEP_CHAINS too low!\n");
printk("turning off the locking correctness validator.\n");
dump_stack();
return 0;
}
chain = lock_chains + nr_lock_chains++;
......@@ -2540,6 +2543,7 @@ static int __lock_acquire(struct lockdep_map *lock, unsigned int subclass,
debug_locks_off();
printk("BUG: MAX_LOCKDEP_SUBCLASSES too low!\n");
printk("turning off the locking correctness validator.\n");
dump_stack();
return 0;
}
......@@ -2636,6 +2640,7 @@ static int __lock_acquire(struct lockdep_map *lock, unsigned int subclass,
debug_locks_off();
printk("BUG: MAX_LOCK_DEPTH too low!\n");
printk("turning off the locking correctness validator.\n");
dump_stack();
return 0;
}
......
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