One more thing.
On 25.04.2019 2:47, William Tu wrote:
> +#define unlikely OVS_UNLIKELY
> +#define likely OVS_LIKELY
> +#define barrier() __asm__ __volatile__("": : :"memory")
> +#define smp_rmb() barrier()
> +#define smp_wmb() barrier()
You may probably use something like this:
#include "ovs-atomic.h"
#define barrier() atomic_signal_fence(memory_order_acq_rel)
#define smp_rmb() atomic_thread_fence(memory_order_acq_rel)
#define smp_wmb() atomic_thread_fence(memory_order_acq_rel)
Note:
atomic_thread_fence(memory_order_acq_rel) should be a bit stronger
than smp_{w,r}mb(), but it's a fair replacement and should be equal
to compiler_barrier() on x86 anyway.
Best regards, Ilya Maximets.
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