On Thursday 21 July 2005 00:48, john cooper wrote:
>Ingo,
> Attached is a patch for 51-28 which brings PPC
>up to date for 2.6.12 PREEMPT_RT. My goal was to
>get a more recent vintage of this work building and
>minimally booting for PPC. Yet this has been stable
>even under our internal stress tests. We now have
>this running on 8560 and 8260 PPC targets with a few
>others in the pipe.
>
>Remaining are a few known BUG asserts to address,
>but as we've historically been chasing seemingly
>PPC-specific (or perhaps usage-specific) problems in
>a fairly old code base it seemed high time to move
>forward. I've also applied the same patch to 51-33
>which not being very far from 51-28 did apply clean,
>builds, boots, and appears equally stable as 51-28.
>
>In the process of producing the patch I stumbled
>across a change introduced in 51-15 where in the
>case of PREEMPT_RT it appears hw_irq_controller.end()
>is never being called at the end of do_hardirq().
>This appears to be an oversight in the code and
>the existing PPC openpic code does register a end()
>handler which it expects to be called in order to
>terminate the interrupt. Otherwise interrupts at
>the current level are effectively disabled.
Humm, I wondering out loud if this is the video dma failure in tvtime?
Anyway, it applied cleanly over -33, and is building now, set for
mode=4.
Rebooted, running it now, and no, this wasn't it, tvtime still has a
BSOD with good audio. However, where before I got about 4-6 cx88
interrupts for a short run of tvtime each time I ran it, now I'm
showing only 4 regardless. Even if I leave it runnng, the count is
stuck at 4.
I wonder if those 4 are associated with the initial insmod?
I've rmmod cx8800 cx88-dvb, then modprobe cx88-dvb which then shows
the cx8800 module (unused) in an lsmod, but a cat of /proc/interrupts
now shows 2 of them:
17: 4 IO-APIC-level [........../ 0] cx88[0], cx88[0]
But I'll run this for a bit & see what else falls off on the
curves. :)
--
Cheers, Gene
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
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Copyright 2005 by Maurice Eugene Heskett, all rights reserved.
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