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Commit b0c9d7ff authored by Paul E. McKenney's avatar Paul E. McKenney
Browse files

rcu: add DEBUG_OBJECTS_RCU_HEAD check for alignment 



Verify that rcu_head structures are aligned to a four-byte boundary.
This check is enabled by CONFIG_DEBUG_OBJECTS_RCU_HEAD.

Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: default avatarJosh Triplett <josh@joshtriplett.org>
parent fc2ecf7e

include/linux/rcupdate.h

+1 −0
Original line number Diff line number Diff line
@@ -785,6 +785,7 @@ extern struct debug_obj_descr rcuhead_debug_descr; 


static inline void debug_rcu_head_queue(struct rcu_head *head)

{

	WARN_ON_ONCE((unsigned long)head & 0x3);

	debug_object_activate(head, &rcuhead_debug_descr);

	debug_object_active_state(head, &rcuhead_debug_descr,

				  STATE_RCU_HEAD_READY,