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
31 -	You are only permitted to use rcu_dereference on pointer values.
52 	subsequent accesses no longer depend on the rcu_dereference(),
55 	Of course, if "p" is a pointer from rcu_dereference(), and "a"
58 	the rcu_dereference(), thus maintaining proper ordering.
62 	(directly or indirectly) from rcu_dereference(), you may need to
76 		p = rcu_dereference(gp)
88 	rcu_dereference() against non-NULL values.  As Linus Torvalds
91 	obtained from rcu_dereference().  For example::
93 		p = rcu_dereference(gp);
101 		p = rcu_dereference(gp);
107 	rcu_dereference().  This could result in bugs due to misordering.
115 		it is safe to compare pointers from rcu_dereference()
128 		of rcu_dereference().
155 		rcu_dereference().  In this case, both pointers depend
156 		on one rcu_dereference() or another, so you get proper
173 		pointer.  Note that the volatile cast in rcu_dereference()
231 		p = rcu_dereference(gp2);
235 		q = rcu_dereference(gp1);  /* Guaranteed non-NULL. */
288 		p = rcu_dereference(gp2);
293 		q = rcu_dereference(gp1);  /* Guaranteed non-NULL. */
308 If a pointer obtained from rcu_dereference() compares not-equal to some
312 guarantees that RCU depends on.  And the volatile cast in rcu_dereference()
315 But without rcu_dereference(), the compiler knows more than you might
357 In short, rcu_dereference() is -not- optional when you are going to
361 WHICH MEMBER OF THE rcu_dereference() FAMILY SHOULD YOU USE?
368 member of the rcu_dereference() to use in various situations:
371 	section, use rcu_dereference().  With the new consolidated
447 	p = rcu_dereference(q->rcu_protected_pointer);
456 if a pointer not marked with "__rcu" is accessed using rcu_dereference()