I'm planning on using the EDMA at almost 100%. I'm concerned that Linux will required some EDMA cycles to perform operations. With Linux pretty much idle, except for running my application, does Linux require using the EDMA at all? Or is the EDMA only used for copying to SD, Ethernet or other IO process? Anyone have any tools to check EDMA usage? If there are conflicting resources, what would be the best way to handle them?
Basically(without going into detail), I'll be using the EDMA to copy memory around internally, nothing to do with dealing with an external IO device. This application requires the quickest real-time reaction as possible, so if I cannot hog the EDMA, I'm gonna have issues. You'll have to assume that my application will max out the processor cycles as well.
***Focus on the question of EDMA usage due to the Linux Kernel, and not the logistics of my application please. Thank you!