On Nov 2, 2009, at 9:40 AM, hank peng wrote:
Kernel version is 2.6.30 and I have enabled fsl DMA engine during configuring kernel. After system booted, I have seen only 38 DMA interrupts, and no increase later when I am doing data transfer through network. So I wonder if mpc8548 had made use of DMA engine when doing memcpy, or maybe if there are other things I haven't noticed?
The dma engine code is not normally used for normal memcpy's in the kernel. There are explicit call sites that have async behavior that should use it (like the networking code).
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