09/10/2021 03:53, eagost...@nvidia.com: > From: Elena Agostini <eagost...@nvidia.com> > > Add a function for the application to ensure the coherency > of the writes executed by another device into the GPU memory. > > Signed-off-by: Elena Agostini <eagost...@nvidia.com> > --- > +/** > + * @warning > + * @b EXPERIMENTAL: this API may change without prior notice. > + * > + * Enforce a GPU memory write barrier. > + * > + * @param dev_id > + * Reference device ID. > + * > + * @return > + * 0 on success, -rte_errno otherwise: > + * - ENODEV if invalid dev_id > + * - ENOTSUP if operation not supported by the driver > + * - EPERM if driver error > + */ > +__rte_experimental > +int rte_gpu_mbw(int16_t dev_id);
I would replace mbw with wmb. Also it may be worth adding few more words about the goal: ensure that previous writes in GPU memory are complete? Does it work for writes done from CPU? from GPU?
