Messages in this thread | | | Date | Sun, 21 Oct 2012 09:44:34 +0200 | From | Richard Cochran <> | Subject | Re: question about context switch on arm Linux |
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On Sun, Oct 21, 2012 at 02:02:42PM +0800, caiyuqing wrote: > hi, all. > I have some questions about context switch on arm Linux (my target is > ARMv7-a). > 1. Does arm linux support FCSE to handle the context switch?
No, mainline Linux does not support FCSE. However, you can use Gilles' unoffical (but working) FCSE branches at
http://git.xenomai.org/?p=ipipe-gch.git;a=summary
> 2. If using FCSE, that means the processes number limit is 128 and the > memory limit is 32MB per process, is that right?
Yes and no.
Gilles' patches offer a "strict mode" and a "best effort" mode. The strict mode does have the limitation, but the best effort mode does not.
HTH, Richard
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