mirror of https://gitee.com/openkylin/linux.git
9 lines
339 B
Plaintext
9 lines
339 B
Plaintext
|
What: tcp_dma_copybreak sysctl
|
||
|
|
Date: Removed in kernel v3.13
|
||
|
|
Contact: Dan Williams <dan.j.williams@intel.com>
|
||
|
|
Description:
|
||
|
|
Formerly the lower limit, in bytes, of the size of socket reads
|
||
|
|
that will be offloaded to a DMA copy engine. Removed due to
|
||
|
|
coherency issues of the cpu potentially touching the buffers
|
||
|
|
while dma is in flight.
|