diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/atomic.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/atomic.h b/include/linux/atomic.h index 29dafa184aeb..e326469bb9d6 100644 --- a/include/linux/atomic.h +++ b/include/linux/atomic.h @@ -4,6 +4,15 @@ #include <asm/atomic.h> #include <asm/barrier.h> +#ifndef atomic_read_ctrl +static inline int atomic_read_ctrl(const atomic_t *v) +{ + int val = atomic_read(v); + smp_read_barrier_depends(); /* Enforce control dependency. */ + return val; +} +#endif + /* * Relaxed variants of xchg, cmpxchg and some atomic operations. * @@ -455,6 +464,15 @@ static inline int atomic_dec_if_positive(atomic_t *v) #include <asm-generic/atomic64.h> #endif +#ifndef atomic64_read_ctrl +static inline long long atomic64_read_ctrl(const atomic64_t *v) +{ + long long val = atomic64_read(v); + smp_read_barrier_depends(); /* Enforce control dependency. */ + return val; +} +#endif + #ifndef atomic64_andnot static inline void atomic64_andnot(long long i, atomic64_t *v) { |