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Submission + - Linux kernel 2.4 or 2.6 in embedded systems? 1

Submitted by snikulin
snikulin writes: My 6-year old embedded SW happily runs on kernel v2.4 for XScale CPU. The SW gets a bunch (tens of megabytes) of data from FPGA over PCI-X bus and pushes it out over GigE to data-processing equipment. The tool chain is based on somewhat outdated gcc v2.95.

Now, by certain technical reasons we want to jump from ARM-based custom board to Atom-based COM Express module. This implies that I'll need to re-create new Linux RAM disk from scratch along with the tool chain. The functionality of the SW will be essentially the same.

My question: is it worth to jump to kernel 2.6 or better to stick with old and proven 2.4?
What will I gain and what will I loose (besides modern gcc compiler and the other related dev tools)?
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Linux kernel 2.4 or 2.6 in embedded systems?

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