lkml.org 
[lkml]   [2006]   [May]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: Ingo's realtime_preempt patch causes kernel oops
From
Date
>  Would IRQs stay masked until the thread has finished running?
>
> I would say yes. But the system is basically broken if you have the
> same interrupt line that needs both to be threaded and NODELAY.

It's certainly less than and ideal situation .. If set an interrupt as
SA_NODELAY you'd think that it's suppose to be high priority , but then
you share it with something that's not high high priority which doesn't
make a lot of sense ..

However, the PCI bus doesn't (as far as I know) allow for interrupts to
easily be isolated .. So, with PCI, you may end up with potentially high
priority interrupts shared with some other interrupt .. So it is a
situation that could happen, maybe even often .

Daniel

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-05-24 18:08    [W:0.071 / U:0.872 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site