Lines Matching refs:rcu_dereference

3 PROPER CARE AND FEEDING OF RETURN VALUES FROM rcu_dereference()
6 Most of the time, you can use values from rcu_dereference() or one of
14 -	You must use one of the rcu_dereference() family of primitives
18 	Without one of the rcu_dereference() primitives, compilers
20 	different values for a single pointer!  Without rcu_dereference(),
25 	In addition, the volatile cast in rcu_dereference() prevents the
33 	instead of rcu_dereference().  In this case, use of READ_ONCE()
37 -	You are only permitted to use rcu_dereference on pointer values.
58 	subsequent accesses no longer depend on the rcu_dereference(),
61 	Of course, if "p" is a pointer from rcu_dereference(), and "a"
64 	the rcu_dereference(), thus maintaining proper ordering.
68 	(directly or indirectly) from rcu_dereference(), you may need to
82 		p = rcu_dereference(gp)
94 	rcu_dereference() against non-NULL values.  As Linus Torvalds
97 	obtained from rcu_dereference().  For example::
99 		p = rcu_dereference(gp);
107 		p = rcu_dereference(gp);
113 	rcu_dereference().  This could result in bugs due to misordering.
121 		it is safe to compare pointers from rcu_dereference()
134 		of rcu_dereference().
161 		rcu_dereference().  In this case, both pointers depend
162 		on one rcu_dereference() or another, so you get proper
179 		pointer.  Note that the volatile cast in rcu_dereference()
237 		p = rcu_dereference(gp2);
241 		q = rcu_dereference(gp1);  /* Guaranteed non-NULL. */
294 		p = rcu_dereference(gp2);
299 		q = rcu_dereference(gp1);  /* Guaranteed non-NULL. */
314 If a pointer obtained from rcu_dereference() compares not-equal to some
318 guarantees that RCU depends on.  And the volatile cast in rcu_dereference()
321 But without rcu_dereference(), the compiler knows more than you might
363 In short, rcu_dereference() is *not* optional when you are going to
367 WHICH MEMBER OF THE rcu_dereference() FAMILY SHOULD YOU USE?
374 member of the rcu_dereference() to use in various situations:
377 	section, use rcu_dereference().  With the new consolidated
453 	p = rcu_dereference(q->rcu_protected_pointer);
462 if a pointer not marked with "__rcu" is accessed using rcu_dereference()