| Kyle Swenson | 8d8f654 | 2021-03-15 11:02:55 -0600 | [diff] [blame^] | 1 | What: tcp_dma_copybreak sysctl |
| 2 | Date: Removed in kernel v3.13 | ||||
| 3 | Contact: Dan Williams <dan.j.williams@intel.com> | ||||
| 4 | Description: | ||||
| 5 | Formerly the lower limit, in bytes, of the size of socket reads | ||||
| 6 | that will be offloaded to a DMA copy engine. Removed due to | ||||
| 7 | coherency issues of the cpu potentially touching the buffers | ||||
| 8 | while dma is in flight. | ||||