Shrink struct lock_class_key; we never store anything in subkeys[], we
only use the addresses.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
/* hash_entry is used to keep track of dynamically allocated keys. */
struct lock_class_key {
- struct hlist_node hash_entry;
- struct lockdep_subclass_key subkeys[MAX_LOCKDEP_SUBCLASSES];
+ union {
+ struct hlist_node hash_entry;
+ struct lockdep_subclass_key subkeys[MAX_LOCKDEP_SUBCLASSES];
+ };
};
extern struct lock_class_key __lockdep_no_validate__;