__lock_pin_lock

Name:__lock_pin_lock

Proto:static struct pin_cookie __lock_pin_lock(struct lockdep_map *lock)

Type:struct pin_cookie

Parameter:

Type	Parameter	Name
struct lockdep_map *	lock

4318

cookie = NIL_COOKIE

4319

curr = current process

4322

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 cookie

4325

When i < lockdep_depth cycle

4326

hlock = held_locks + i

4328

If match_held_lock(hlock, lock) Then

4334

val = 1 + (prandom_u32 - pseudo random number generator* A 32 bit pseudo-random number is generated using a fast* algorithm suitable for simulation. This algorithm is NOT* considered safe for cryptographic use. >> 16)

4335

pin_count += val

4336

Return cookie

4340

WARN(1, "pinning an unheld lock\n")

4341

Return cookie

**Caller**
Name	Describe
lock_pin_lock

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