78639d5456
Performing large memory copies usually takes up a major part of CPU cycles and becomes the hot spot in vhost-user enqueue operation. To offload the large copies from CPU to the DMA devices, asynchronous APIs are introduced, with which the CPU just submits copy jobs to the DMA but without waiting for its copy completion. Thus, there is no CPU intervention during data transfer. We can save precious CPU cycles and improve the overall throughput for vhost-user based applications. This patch introduces registration/un-registration APIs for vhost async data enqueue operation. Together with the registration APIs implementations, data structures and the prototype of the async callback functions required for async enqueue data path are also defined. Signed-off-by: Patrick Fu <patrick.fu@intel.com> Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>
DPDK is a set of libraries and drivers for fast packet processing. It supports many processor architectures and both FreeBSD and Linux. The DPDK uses the Open Source BSD-3-Clause license for the core libraries and drivers. The kernel components are GPL-2.0 licensed. Please check the doc directory for release notes, API documentation, and sample application information. For questions and usage discussions, subscribe to: users@dpdk.org Report bugs and issues to the development mailing list: dev@dpdk.org