[RFC] User space to kernel space copy optimization

From: Sinan Kaya
Date: Mon Nov 16 2015 - 16:53:40 EST

One of the things I'm interested in is to use a memcpy capable DMA
engine HW to optimize user space and kernel space parameter copying.

Of course, this will not be viable for all parameter sizes but I can see
this being useful. The goal is to save power in the cost of little

Before I go and invent my own mechanism, I'd like to have ideas on what
an acceptable solution would look like. Especially, I'm looking for a
generic implementation that could plug into any DMA engine HW.

Sinan Kaya
Qualcomm Technologies, Inc. on behalf of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a
Linux Foundation Collaborative Project
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/