Honored Contributor
Honored Contributor<div class='quotetop'>QUOTE (jan @ Sep 8 2009, 02:03 PM) <{post_snapback}> (index.php?act=findpost&pid=23780)</div>
--- Quote Start --- I need to make a small patch inside uClinux kernel for NIOS2. I need to enable one specific IRQ to have absolute priority over all atomic processes running in Linux - over threads, over other ISRs, over instruction traps and so on - simply said - over any atomic section in uClinux means.[/b] --- Quote End --- You don't. I suppose you don't want to hear this, but it's not a good idea to do such high priority stuff with the CPU that runs Linux. You should either do this in FPGA hardware, or implement a second processor in the FPGA that independently handles the high-priority stuff. When using a not modifiable hardware things like you describe are unavoidable, but with an FPGA processor, IMHO, this is not appropriate. -Michael
