lockdep_init_map

Name:Initialize a lock instance's lock-class mapping info:

Proto:void lockdep_init_map(struct lockdep_map *lock, const char *name, struct lock_class_key *key, int subclass)

Type:void

Parameter:

Type	Parameter	Name
struct lockdep_map *	lock
const char *	name
struct lock_class_key *	key
int	subclass

3714

When i < NR_LOCKDEP_CACHING_CLASSES cycle class_cache[i] = NULL

3724

If DEBUG_LOCKS_WARN_ON(!name) Then

3725

name = "NULL"

3726

Return

3729

3734

If DEBUG_LOCKS_WARN_ON(!key) Then Return

3740

If Not Is this the address of a static object: && Not Check whether a key has been registered as a dynamic key. Then

3741

If We want to turn all lock-debugging facilities on/off at once,* via a global flag. The reason is that once a single bug has been* detected and reported, there might be cascade of followup bugs* that would just muddy the log. So we report the first one and Then printk(r conditions "BUG: key %px has not been registered!\n", key)

3743

DEBUG_LOCKS_WARN_ON(1)

3744

Return

3746

key = key

3748

If Value for the false possibility is greater at compile time(!We want to turn all lock-debugging facilities on/off at once,* via a global flag. The reason is that once a single bug has been* detected and reported, there might be cascade of followup bugs* that would just muddy the log. So we report the first one and) Then Return

3751

If subclass Then

3754

If DEBUG_LOCKS_WARN_ON(lockdep_recursion) Then Return

3757

raw_local_irq_save(flags)

3758

lockdep_recursion = 1

3759

Register a lock's class in the hash-table, if the class is not present* yet. Otherwise we look it up. We cache the result in the lock object* itself, so actual lookup of the hash should be once per lock object.

3760

lockdep_recursion = 0

3761

raw_local_irq_restore(flags)

**Caller**
Name	Describe
bucket_table_alloc
__alloc_bucket_spinlocks	Allocate an array of spinlocks to be accessed by a hash. Two arguments* indicate the number of elements to allocate in the array. max_size* gives the maximum number of elements to allocate. cpu_mult gives* the number of locks per CPU to allocate
__init_rwsem	Initialize an rwsem:
debug_mutex_init

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