__u.__val; \
})
-/**
- * READ_ONCE_CTRL - Read a value heading a control dependency
- * @x: The value to be read, heading the control dependency
- *
- * Control dependencies are tricky. See Documentation/memory-barriers.txt
- * for important information on how to use them. Note that in many cases,
- * use of smp_load_acquire() will be much simpler. Control dependencies
- * should be avoided except on the hottest of hotpaths.
- */
-#define READ_ONCE_CTRL(x) \
-({ \
- typeof(x) __val = READ_ONCE(x); \
- smp_read_barrier_depends(); /* Enforce control dependency. */ \
- __val; \
-})
-
#endif /* __KERNEL__ */
#endif /* __ASSEMBLY__ */